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source: main/waeup.kofa/trunk/src/waeup/kofa/students/utils.py @ 16609

Last change on this file since 16609 was 16609, checked in by Henrik Bettermann, 3 years ago
Enable students and officers to upload scanned signature in the same way as passport pictures are handled. Some tabs and titles had to be renamed. The placeholder file, which is still the portrait placeholder, are no longer shown on base pages.
Property svn:keywords set to `Id`
File size: 53.8 KB

Line
1	## $Id: utils.py 16609 2021-09-08 07:15:07Z henrik $
2	##
3	## Copyright (C) 2011 Uli Fouquet & Henrik Bettermann
4	## This program is free software; you can redistribute it and/or modify
5	## it under the terms of the GNU General Public License as published by
6	## the Free Software Foundation; either version 2 of the License, or
7	## (at your option) any later version.
8	##
9	## This program is distributed in the hope that it will be useful,
10	## but WITHOUT ANY WARRANTY; without even the implied warranty of
11	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	## GNU General Public License for more details.
13	##
14	## You should have received a copy of the GNU General Public License
15	## along with this program; if not, write to the Free Software
16	## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17	##
18	"""General helper functions and utilities for the students section.
19	"""
20	import grok
21	import textwrap
22	from copy import deepcopy
23	from cgi import escape
24	from time import time
25	from cStringIO import StringIO
26	from PyPDF2 import PdfFileMerger, PdfFileReader, PdfFileWriter
27	from reportlab.lib import colors
28	from reportlab.lib.units import cm
29	from reportlab.lib.pagesizes import A4
30	from reportlab.lib.styles import getSampleStyleSheet
31	from reportlab.platypus import Paragraph, Image, Table, Spacer
32	from reportlab.platypus.doctemplate import LayoutError
33	from reportlab.platypus.flowables import PageBreak
34	from zope.event import notify
35	from zope.schema.interfaces import ConstraintNotSatisfied
36	from zope.component import getUtility, createObject, queryUtility
37	from zope.catalog.interfaces import ICatalog
38	from zope.formlib.form import setUpEditWidgets
39	from zope.i18n import translate
40	from waeup.kofa.interfaces import (
41	IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED, GRADUATED,
42	academic_sessions_vocab, IFileStoreNameChooser)
43	from waeup.kofa.interfaces import MessageFactory as _
44	from waeup.kofa.students.interfaces import IStudentsUtils
45	from waeup.kofa.students.workflow import ADMITTED
46	from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
47	from waeup.kofa.browser.pdf import (
48	ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
49	get_signature_tables, get_qrcode)
50	from waeup.kofa.browser.interfaces import IPDFCreator
51	from waeup.kofa.utils.helpers import to_timezone
52
53	SLIP_STYLE = [
54	('VALIGN',(0,0),(-1,-1),'TOP'),
55	#('FONT', (0,0), (-1,-1), 'Helvetica', 11),
56	]
57
58	CONTENT_STYLE = [
59	('VALIGN',(0,0),(-1,-1),'TOP'),
60	#('FONT', (0,0), (-1,-1), 'Helvetica', 8),
61	#('TEXTCOLOR',(0,0),(-1,0),colors.white),
62	#('BACKGROUND',(0,0),(-1,0),colors.black),
63	('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
64	('BOX', (0,0), (-1,-1), 1, colors.black),
65	]
66
67	FONT_SIZE = 10
68	FONT_COLOR = 'black'
69
70	def trans(text, lang):
71	# shortcut
72	return translate(text, 'waeup.kofa', target_language=lang)
73
74	def formatted_text(text, color=FONT_COLOR, lang='en'):
75	"""Turn `text`, `color` and `size` into an HTML snippet.
76
77	The snippet is suitable for use with reportlab and generating PDFs.
78	Wraps the `text` into a ``<font>`` tag with passed attributes.
79
80	Also non-strings are converted. Raw strings are expected to be
81	utf-8 encoded (usually the case for widgets etc.).
82
83	Finally, a br tag is added if widgets contain div tags
84	which are not supported by reportlab.
85
86	The returned snippet is unicode type.
87	"""
88	if not isinstance(text, unicode):
89	if isinstance(text, basestring):
90	text = text.decode('utf-8')
91	else:
92	text = unicode(text)
93	if text == 'None':
94	text = ''
95	# Very long matriculation numbers need to be wrapped
96	if text.find(' ') == -1 and len(text.split('/')) > 6:
97	text = '/'.join(text.split('/')[:5]) + \
98	'/ ' + '/'.join(text.split('/')[5:])
99	# Mainly for boolean values we need our customized
100	# localisation of the zope domain
101	text = translate(text, 'zope', target_language=lang)
102	text = text.replace('</div>', '<br /></div>')
103	tag1 = u'<font color="%s">' % (color)
104	return tag1 + u'%s</font>' % text
105
106	def generate_student_id():
107	students = grok.getSite()['students']
108	new_id = students.unique_student_id
109	return new_id
110
111	def set_up_widgets(view, ignore_request=False):
112	view.adapters = {}
113	view.widgets = setUpEditWidgets(
114	view.form_fields, view.prefix, view.context, view.request,
115	adapters=view.adapters, for_display=True,
116	ignore_request=ignore_request
117	)
118
119	def render_student_data(studentview, context, omit_fields=(),
120	lang='en', slipname=None, no_passport=False):
121	"""Render student table for an existing frame.
122	"""
123	width, height = A4
124	set_up_widgets(studentview, ignore_request=True)
125	data_left = []
126	data_middle = []
127	style = getSampleStyleSheet()
128	img = getUtility(IExtFileStore).getFileByContext(
129	studentview.context, attr='passport.jpg')
130	if img is None:
131	from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
132	img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
133	doc_img = Image(img.name, width=4cm, height=4cm, kind='bound')
134	data_left.append([doc_img])
135	# Uniben wants a second picture. We add this picture here.
136	img2 = getUtility(IExtFileStore).getFileByContext(
137	studentview.context, attr='passport2.jpg')
138	if img2 is not None:
139	doc_img2 = Image(img2.name, width=4cm, height=4cm, kind='bound')
140	data_left.append([doc_img2])
141	#data.append([Spacer(1, 12)])
142
143	f_label = trans(_('Name:'), lang)
144	f_label = Paragraph(f_label, ENTRY1_STYLE)
145	f_text = formatted_text(studentview.context.display_fullname)
146	f_text = Paragraph(f_text, ENTRY1_STYLE)
147	data_middle.append([f_label,f_text])
148
149	for widget in studentview.widgets:
150	if 'name' in widget.name:
151	continue
152	f_label = translate(
153	widget.label.strip(), 'waeup.kofa',
154	target_language=lang)
155	f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
156	f_text = formatted_text(widget(), lang=lang)
157	f_text = Paragraph(f_text, ENTRY1_STYLE)
158	data_middle.append([f_label,f_text])
159	if not 'date_of_birth' in omit_fields:
160	f_label = trans(_('Date of Birth:'), lang)
161	f_label = Paragraph(f_label, ENTRY1_STYLE)
162	date_of_birth = studentview.context.date_of_birth
163	tz = getUtility(IKofaUtils).tzinfo
164	date_of_birth = to_timezone(date_of_birth, tz)
165	if date_of_birth is not None:
166	date_of_birth = date_of_birth.strftime("%d/%m/%Y")
167	f_text = formatted_text(date_of_birth)
168	f_text = Paragraph(f_text, ENTRY1_STYLE)
169	data_middle.append([f_label,f_text])
170	if getattr(studentview.context, 'certcode', None):
171	if not 'certificate' in omit_fields:
172	f_label = trans(_('Study Course:'), lang)
173	f_label = Paragraph(f_label, ENTRY1_STYLE)
174	f_text = formatted_text(
175	studentview.context['studycourse'].certificate.longtitle)
176	f_text = Paragraph(f_text, ENTRY1_STYLE)
177	data_middle.append([f_label,f_text])
178	if not 'department' in omit_fields:
179	f_label = trans(_('Department:'), lang)
180	f_label = Paragraph(f_label, ENTRY1_STYLE)
181	f_text = formatted_text(
182	studentview.context[
183	'studycourse'].certificate.__parent__.__parent__.longtitle,
184	)
185	f_text = Paragraph(f_text, ENTRY1_STYLE)
186	data_middle.append([f_label,f_text])
187	if not 'faculty' in omit_fields:
188	f_label = trans(_('Faculty:'), lang)
189	f_label = Paragraph(f_label, ENTRY1_STYLE)
190	f_text = formatted_text(
191	studentview.context[
192	'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
193	)
194	f_text = Paragraph(f_text, ENTRY1_STYLE)
195	data_middle.append([f_label,f_text])
196	if not 'current_mode' in omit_fields:
197	studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
198	sm = studymodes_dict[studentview.context.current_mode]
199	f_label = trans(_('Study Mode:'), lang)
200	f_label = Paragraph(f_label, ENTRY1_STYLE)
201	f_text = formatted_text(sm)
202	f_text = Paragraph(f_text, ENTRY1_STYLE)
203	data_middle.append([f_label,f_text])
204	if not 'entry_session' in omit_fields:
205	f_label = trans(_('Entry Session:'), lang)
206	f_label = Paragraph(f_label, ENTRY1_STYLE)
207	entry_session = studentview.context.entry_session
208	try:
209	entry_session = academic_sessions_vocab.getTerm(
210	entry_session).title
211	except LookupError:
212	entry_session = _('void')
213	f_text = formatted_text(entry_session)
214	f_text = Paragraph(f_text, ENTRY1_STYLE)
215	data_middle.append([f_label,f_text])
216	# Requested by Uniben, does not really make sense
217	if not 'current_level' in omit_fields:
218	f_label = trans(_('Current Level:'), lang)
219	f_label = Paragraph(f_label, ENTRY1_STYLE)
220	current_level = studentview.context['studycourse'].current_level
221	studylevelsource = StudyLevelSource().factory
222	current_level = studylevelsource.getTitle(
223	studentview.context, current_level)
224	f_text = formatted_text(current_level)
225	f_text = Paragraph(f_text, ENTRY1_STYLE)
226	data_middle.append([f_label,f_text])
227
228	if no_passport:
229	table = Table(data_middle,style=SLIP_STYLE)
230	table.hAlign = 'LEFT'
231	return table
232
233	# append QR code to the right
234	if slipname:
235	url = studentview.url(context, slipname)
236	data_right = [[get_qrcode(url, width=70.0)]]
237	table_right = Table(data_right,style=SLIP_STYLE)
238	else:
239	table_right = None
240
241	table_left = Table(data_left,style=SLIP_STYLE)
242	table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5cm, 5cm])
243	table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
244	return table
245
246	def render_table_data(tableheader, tabledata, lang='en'):
247	"""Render children table for an existing frame.
248	"""
249	data = []
250	#data.append([Spacer(1, 12)])
251	line = []
252	style = getSampleStyleSheet()
253	for element in tableheader:
254	field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
255	field = Paragraph(field, style["Normal"])
256	line.append(field)
257	data.append(line)
258	for ticket in tabledata:
259	line = []
260	for element in tableheader:
261	field = formatted_text(getattr(ticket,element[1],u' '))
262	field = Paragraph(field, style["Normal"])
263	line.append(field)
264	data.append(line)
265	table = Table(data,colWidths=[
266	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
267	return table
268
269	def render_transcript_data(view, tableheader, levels_data, lang='en'):
270	"""Render children table for an existing frame.
271	"""
272	data = []
273	style = getSampleStyleSheet()
274	format_float = getUtility(IKofaUtils).format_float
275	for level in levels_data:
276	level_obj = level['level']
277	tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
278	headerline = []
279	tabledata = []
280	if 'evel' in view.level_dict.get('ticket.level', str(level_obj.level)):
281	subheader = '%s %s, %s' % (
282	trans(_('Session'), lang),
283	view.session_dict[level_obj.level_session],
284	view.level_dict.get('ticket.level', str(level_obj.level)))
285	else:
286	subheader = '%s %s, %s %s' % (
287	trans(_('Session'), lang),
288	view.session_dict[level_obj.level_session],
289	trans(_('Level'), lang),
290	view.level_dict.get(level_obj.level, str(level_obj.level)))
291	data.append(Paragraph(subheader, HEADING_STYLE))
292	for element in tableheader:
293	field = '<strong>%s</strong>' % formatted_text(element[0])
294	field = Paragraph(field, style["Normal"])
295	headerline.append(field)
296	tabledata.append(headerline)
297	for ticket in tickets:
298	ticketline = []
299	for element in tableheader:
300	field = formatted_text(getattr(ticket,element[1],u' '))
301	field = Paragraph(field, style["Normal"])
302	ticketline.append(field)
303	tabledata.append(ticketline)
304	table = Table(tabledata,colWidths=[
305	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
306	data.append(table)
307	sgpa = format_float(level['sgpa'], 2)
308	sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), sgpa)
309	#sgpa = '%s: %.2f' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
310	data.append(Paragraph(sgpa, style["Normal"]))
311	if getattr(level_obj, 'transcript_remark', None):
312	remark = '%s: %s' % (
313	trans('Transcript Remark', lang),
314	getattr(level_obj, 'transcript_remark'))
315	data.append(Paragraph(remark, style["Normal"]))
316	return data
317
318	def docs_as_flowables(view, lang='en'):
319	"""Create reportlab flowables out of scanned docs.
320	"""
321	# XXX: fix circular import problem
322	from waeup.kofa.browser.fileviewlets import FileManager
323	from waeup.kofa.browser import DEFAULT_IMAGE_PATH
324	style = getSampleStyleSheet()
325	data = []
326
327	# Collect viewlets
328	fm = FileManager(view.context, view.request, view)
329	fm.update()
330	if fm.viewlets:
331	sc_translation = trans(_('Scanned Documents'), lang)
332	data.append(Paragraph(sc_translation, HEADING_STYLE))
333	# Insert list of scanned documents
334	table_data = []
335	for viewlet in fm.viewlets:
336	if viewlet.file_exists:
337	# Show viewlet only if file exists
338	f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
339	img_path = getattr(getUtility(IExtFileStore).getFileByContext(
340	view.context, attr=viewlet.download_name), 'name', None)
341	#f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
342	if img_path is None:
343	pass
344	elif not img_path[-4:] in ('.jpg', '.JPG'):
345	# reportlab requires jpg images, I think.
346	f_text = Paragraph('%s (not displayable)' % (
347	viewlet.title,), ENTRY1_STYLE)
348	else:
349	f_text = Image(img_path, width=2cm, height=1cm, kind='bound')
350	table_data.append([f_label, f_text])
351	if table_data:
352	# safety belt; empty tables lead to problems.
353	data.append(Table(table_data, style=SLIP_STYLE))
354	return data
355
356	class StudentsUtils(grok.GlobalUtility):
357	"""A collection of methods subject to customization.
358	"""
359	grok.implements(IStudentsUtils)
360
361	def getReturningData(self, student):
362	""" Define what happens after school fee payment
363	depending on the student's senate verdict.
364	In the base configuration current level is always increased
365	by 100 no matter which verdict has been assigned.
366	"""
367	new_level = student['studycourse'].current_level + 100
368	new_session = student['studycourse'].current_session + 1
369	return new_session, new_level
370
371	def setReturningData(self, student):
372	""" Define what happens after school fee payment
373	depending on the student's senate verdict.
374	This method folllows the same algorithm as `getReturningData` but
375	it also sets the new values.
376	"""
377	new_session, new_level = self.getReturningData(student)
378	try:
379	student['studycourse'].current_level = new_level
380	except ConstraintNotSatisfied:
381	# Do not change level if level exceeds the
382	# certificate's end_level.
383	pass
384	student['studycourse'].current_session = new_session
385	verdict = student['studycourse'].current_verdict
386	student['studycourse'].current_verdict = '0'
387	student['studycourse'].previous_verdict = verdict
388	return
389
390	def _getSessionConfiguration(self, session):
391	try:
392	return grok.getSite()['configuration'][str(session)]
393	except KeyError:
394	return None
395
396	def _isPaymentDisabled(self, p_session, category, student):
397	academic_session = self._getSessionConfiguration(p_session)
398	if category == 'schoolfee' and \
399	'sf_all' in academic_session.payment_disabled:
400	return True
401	return False
402
403	def samePaymentMade(self, student, category, p_item, p_session):
404	for key in student['payments'].keys():
405	ticket = student['payments'][key]
406	if ticket.p_state == 'paid' and\
407	ticket.p_category == category and \
408	ticket.p_item != 'Balance' and \
409	ticket.p_item == p_item and \
410	ticket.p_session == p_session:
411	return True
412	return False
413
414	def setPaymentDetails(self, category, student,
415	previous_session=None, previous_level=None, combi=[]):
416	"""Create a payment ticket and set the payment data of a
417	student for the payment category specified.
418	"""
419	p_item = u''
420	amount = 0.0
421	if previous_session:
422	if previous_session < student['studycourse'].entry_session:
423	return _('The previous session must not fall below '
424	'your entry session.'), None
425	if category == 'schoolfee':
426	# School fee is always paid for the following session
427	if previous_session > student['studycourse'].current_session:
428	return _('This is not a previous session.'), None
429	else:
430	if previous_session > student['studycourse'].current_session - 1:
431	return _('This is not a previous session.'), None
432	p_session = previous_session
433	p_level = previous_level
434	p_current = False
435	else:
436	p_session = student['studycourse'].current_session
437	p_level = student['studycourse'].current_level
438	p_current = True
439	academic_session = self._getSessionConfiguration(p_session)
440	if academic_session == None:
441	return _(u'Session configuration object is not available.'), None
442	# Determine fee.
443	if category == 'schoolfee':
444	try:
445	certificate = student['studycourse'].certificate
446	p_item = certificate.code
447	except (AttributeError, TypeError):
448	return _('Study course data are incomplete.'), None
449	if previous_session:
450	# Students can pay for previous sessions in all
451	# workflow states. Fresh students are excluded by the
452	# update method of the PreviousPaymentAddFormPage.
453	if previous_level == 100:
454	amount = getattr(certificate, 'school_fee_1', 0.0)
455	else:
456	amount = getattr(certificate, 'school_fee_2', 0.0)
457	else:
458	if student.state == CLEARED:
459	amount = getattr(certificate, 'school_fee_1', 0.0)
460	elif student.state == RETURNING:
461	# In case of returning school fee payment the
462	# payment session and level contain the values of
463	# the session the student has paid for. Payment
464	# session is always next session.
465	p_session, p_level = self.getReturningData(student)
466	academic_session = self._getSessionConfiguration(p_session)
467	if academic_session == None:
468	return _(
469	u'Session configuration object is not available.'
470	), None
471	amount = getattr(certificate, 'school_fee_2', 0.0)
472	elif student.is_postgrad and student.state == PAID:
473	# Returning postgraduate students also pay for the
474	# next session but their level always remains the
475	# same.
476	p_session += 1
477	academic_session = self._getSessionConfiguration(p_session)
478	if academic_session == None:
479	return _(
480	u'Session configuration object is not available.'
481	), None
482	amount = getattr(certificate, 'school_fee_2', 0.0)
483	elif category == 'clearance':
484	try:
485	p_item = student['studycourse'].certificate.code
486	except (AttributeError, TypeError):
487	return _('Study course data are incomplete.'), None
488	amount = academic_session.clearance_fee
489	elif category == 'bed_allocation':
490	p_item = self.getAccommodationDetails(student)['bt']
491	amount = academic_session.booking_fee
492	elif category == 'hostel_maintenance':
493	amount = 0.0
494	bedticket = student['accommodation'].get(
495	str(student.current_session), None)
496	if bedticket is not None and bedticket.bed is not None:
497	p_item = bedticket.bed_coordinates
498	if bedticket.bed.__parent__.maint_fee > 0:
499	amount = bedticket.bed.__parent__.maint_fee
500	else:
501	# fallback
502	amount = academic_session.maint_fee
503	else:
504	return _(u'No bed allocated.'), None
505	elif category == 'combi' and combi:
506	categories = getUtility(IKofaUtils).COMBI_PAYMENT_CATEGORIES
507	for cat in combi:
508	fee_name = cat + '_fee'
509	cat_amount = getattr(academic_session, fee_name, 0.0)
510	if not cat_amount:
511	return _('%s undefined.' % categories[cat]), None
512	amount += cat_amount
513	p_item += u'%s + ' % categories[cat]
514	p_item = p_item.strip(' + ')
515	else:
516	fee_name = category + '_fee'
517	amount = getattr(academic_session, fee_name, 0.0)
518	if amount in (0.0, None):
519	return _('Amount could not be determined.'), None
520	if self.samePaymentMade(student, category, p_item, p_session):
521	return _('This type of payment has already been made.'), None
522	if self._isPaymentDisabled(p_session, category, student):
523	return _('This category of payments has been disabled.'), None
524	payment = createObject(u'waeup.StudentOnlinePayment')
525	timestamp = ("%d" % int(time()*10000))[1:]
526	payment.p_id = "p%s" % timestamp
527	payment.p_category = category
528	payment.p_item = p_item
529	payment.p_session = p_session
530	payment.p_level = p_level
531	payment.p_current = p_current
532	payment.amount_auth = amount
533	payment.p_combi = combi
534	return None, payment
535
536	def setBalanceDetails(self, category, student,
537	balance_session, balance_level, balance_amount):
538	"""Create a balance payment ticket and set the payment data
539	as selected by the student.
540	"""
541	p_item = u'Balance'
542	p_session = balance_session
543	p_level = balance_level
544	p_current = False
545	amount = balance_amount
546	academic_session = self._getSessionConfiguration(p_session)
547	if academic_session == None:
548	return _(u'Session configuration object is not available.'), None
549	if amount in (0.0, None) or amount < 0:
550	return _('Amount must be greater than 0.'), None
551	payment = createObject(u'waeup.StudentOnlinePayment')
552	timestamp = ("%d" % int(time()*10000))[1:]
553	payment.p_id = "p%s" % timestamp
554	payment.p_category = category
555	payment.p_item = p_item
556	payment.p_session = p_session
557	payment.p_level = p_level
558	payment.p_current = p_current
559	payment.amount_auth = amount
560	return None, payment
561
562	def increaseMatricInteger(self, student):
563	"""Increase counter for matric numbers.
564	This counter can be a centrally stored attribute or an attribute of
565	faculties, departments or certificates. In the base package the counter
566	is as an attribute of the site configuration container.
567	"""
568	grok.getSite()['configuration'].next_matric_integer += 1
569	return
570
571	def constructMatricNumber(self, student):
572	"""Fetch the matric number counter which fits the student and
573	construct the new matric number of the student.
574	In the base package the counter is returned which is as an attribute
575	of the site configuration container.
576	"""
577	next_integer = grok.getSite()['configuration'].next_matric_integer
578	if next_integer == 0:
579	return _('Matriculation number cannot be set.'), None
580	return None, unicode(next_integer)
581
582	def setMatricNumber(self, student):
583	"""Set matriculation number of student. If the student's matric number
584	is unset a new matric number is
585	constructed according to the matriculation number construction rules
586	defined in the `constructMatricNumber` method. The new matric number is
587	set, the students catalog updated. The corresponding matric number
588	counter is increased by one.
589
590	This method is tested but not used in the base package. It can
591	be used in custom packages by adding respective views
592	and by customizing `increaseMatricInteger` and `constructMatricNumber`
593	according to the university's matriculation number construction rules.
594
595	The method can be disabled by setting the counter to zero.
596	"""
597	if student.matric_number is not None:
598	return _('Matriculation number already set.'), None
599	if student.certcode is None:
600	return _('No certificate assigned.'), None
601	error, matric_number = self.constructMatricNumber(student)
602	if error:
603	return error, None
604	try:
605	student.matric_number = matric_number
606	except MatNumNotInSource:
607	return _('Matriculation number %s exists.' % matric_number), None
608	notify(grok.ObjectModifiedEvent(student))
609	self.increaseMatricInteger(student)
610	return None, matric_number
611
612	def getAccommodationDetails(self, student):
613	"""Determine the accommodation data of a student.
614	"""
615	d = {}
616	d['error'] = u''
617	hostels = grok.getSite()['hostels']
618	d['booking_session'] = hostels.accommodation_session
619	d['allowed_states'] = hostels.accommodation_states
620	d['startdate'] = hostels.startdate
621	d['enddate'] = hostels.enddate
622	d['expired'] = hostels.expired
623	# Determine bed type
624	studycourse = student['studycourse']
625	certificate = getattr(studycourse,'certificate',None)
626	entry_session = studycourse.entry_session
627	current_level = studycourse.current_level
628	if None in (entry_session, current_level, certificate):
629	return d
630	end_level = certificate.end_level
631	if current_level == 10:
632	bt = 'pr'
633	elif entry_session == grok.getSite()['hostels'].accommodation_session:
634	bt = 'fr'
635	elif current_level >= end_level:
636	bt = 'fi'
637	else:
638	bt = 're'
639	if student.sex == 'f':
640	sex = 'female'
641	else:
642	sex = 'male'
643	special_handling = 'regular'
644	d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
645	return d
646
647	def checkAccommodationRequirements(self, student, acc_details):
648	if acc_details.get('expired', False):
649	startdate = acc_details.get('startdate')
650	enddate = acc_details.get('enddate')
651	if startdate and enddate:
652	tz = getUtility(IKofaUtils).tzinfo
653	startdate = to_timezone(
654	startdate, tz).strftime("%d/%m/%Y %H:%M:%S")
655	enddate = to_timezone(
656	enddate, tz).strftime("%d/%m/%Y %H:%M:%S")
657	return _("Outside booking period: ${a} - ${b}",
658	mapping = {'a': startdate, 'b': enddate})
659	else:
660	return _("Outside booking period.")
661	if not acc_details.get('bt'):
662	return _("Your data are incomplete.")
663	if not student.state in acc_details['allowed_states']:
664	return _("You are in the wrong registration state.")
665	if student['studycourse'].current_session != acc_details[
666	'booking_session']:
667	return _('Your current session does not '
668	'match accommodation session.')
669	bsession = str(acc_details['booking_session'])
670	if bsession in student['accommodation'].keys() \
671	and not 'booking expired' in \
672	student['accommodation'][bsession].bed_coordinates:
673	return _('You already booked a bed space in '
674	'current accommodation session.')
675	return
676
677	def selectBed(self, available_beds):
678	"""Select a bed from a filtered list of available beds.
679	In the base configuration beds are sorted by the sort id
680	of the hostel and the bed number. The first bed found in
681	this sorted list is taken.
682	"""
683	sorted_beds = sorted(available_beds,
684	key=lambda bed: 1000 * bed.__parent__.sort_id + bed.bed_number)
685	return sorted_beds[0]
686
687	def GPABoundaries(self, faccode=None, depcode=None, certcode=None):
688	return ((1, 'Fail'),
689	(1.5, 'Pass'),
690	(2.4, '3rd Class'),
691	(3.5, '2nd Class Lower'),
692	(4.5, '2nd Class Upper'),
693	(5, '1st Class'))
694
695	def getClassFromCGPA(self, gpa, student):
696	"""Determine the class of degree. In some custom packages
697	this class depends on e.g. the entry session of the student. In the
698	base package, it does not.
699	"""
700	if gpa < self.GPABoundaries()[0][0]:
701	return 0, self.GPABoundaries()[0][1]
702	if gpa < self.GPABoundaries()[1][0]:
703	return 1, self.GPABoundaries()[1][1]
704	if gpa < self.GPABoundaries()[2][0]:
705	return 2, self.GPABoundaries()[2][1]
706	if gpa < self.GPABoundaries()[3][0]:
707	return 3, self.GPABoundaries()[3][1]
708	if gpa < self.GPABoundaries()[4][0]:
709	return 4, self.GPABoundaries()[4][1]
710	if gpa <= self.GPABoundaries()[5][0]:
711	return 5, self.GPABoundaries()[5][1]
712	return
713
714	def getDegreeClassNumber(self, level_obj):
715	"""Get degree class number (used for SessionResultsPresentation
716	reports).
717	"""
718	if level_obj.gpa_params[1] == 0:
719	# No credits weighted
720	return 6
721	return self.getClassFromCGPA(
722	level_obj.cumulative_params[0], level_obj.student)[0]
723
724	def _saveTranscriptPDF(self, student, transcript):
725	"""Create a transcript PDF file and store it in student folder.
726	"""
727	file_store = getUtility(IExtFileStore)
728	file_id = IFileStoreNameChooser(student).chooseName(
729	attr="final_transcript.pdf")
730	file_store.createFile(file_id, StringIO(transcript))
731	return
732
733	def warnCreditsOOR(self, studylevel, course=None):
734	"""Return message if credits are out of range. In the base
735	package only maximum credits is set.
736	"""
737	if course and studylevel.total_credits + course.credits > 50:
738	return _('Maximum credits exceeded.')
739	elif studylevel.total_credits > 50:
740	return _('Maximum credits exceeded.')
741	return
742
743	def warnCourseAlreadyPassed(self, studylevel, course):
744	"""Return message if course has already been passed at
745	previous levels.
746	"""
747	for slevel in studylevel.__parent__.values():
748	for cticket in slevel.values():
749	if cticket.code == course.code \
750	and cticket.total_score >= cticket.passmark:
751	return _('Course has already been passed at previous level.')
752	return False
753
754	def getBedCoordinates(self, bedticket):
755	"""Return descriptive bed coordinates.
756	This method can be used to customize the `display_coordinates`
757	property method in order to display a
758	customary description of the bed space.
759	"""
760	return bedticket.bed_coordinates
761
762	def clearance_disabled_message(self, student):
763	"""Render message if clearance is disabled.
764	"""
765	try:
766	session_config = grok.getSite()[
767	'configuration'][str(student.current_session)]
768	except KeyError:
769	return _('Session configuration object is not available.')
770	if not session_config.clearance_enabled:
771	return _('Clearance is disabled for this session.')
772	return None
773
774	def getPDFCreator(self, context):
775	"""Get a pdf creator suitable for `context`.
776	The default implementation always returns the default creator.
777	"""
778	return getUtility(IPDFCreator)
779
780	def _mergeFiles(self, mergefiles, watermark, pdf_stream):
781	merger = PdfFileMerger()
782	merger.append(StringIO(pdf_stream))
783	for file in mergefiles:
784	if watermark:
785	# Pass through all pages of each file
786	# and merge with watermark page. Paint
787	# watermark first to make it transparent.
788	marked_file = PdfFileWriter()
789	orig_file = PdfFileReader(file)
790	num_pages = orig_file.getNumPages()
791	for num in range(num_pages):
792	watermark_file = PdfFileReader(watermark)
793	page = watermark_file.getPage(0)
794	page.mergePage(orig_file.getPage(num))
795	marked_file.addPage(page)
796	# Save into a file-like object
797	tmp1 = StringIO()
798	marked_file.write(tmp1)
799	# Append the file-like object
800	merger.append(tmp1)
801	else:
802	# Just append the file object
803	merger.append(file)
804	# Save into a file-like object
805	tmp2 = StringIO()
806	merger.write(tmp2)
807	return tmp2.getvalue()
808
809	def renderPDF(self, view, filename='slip.pdf', student=None,
810	studentview=None,
811	tableheader=[], tabledata=[],
812	note=None, signatures=None, sigs_in_footer=(),
813	show_scans=True, topMargin=1.5,
814	omit_fields=(),
815	mergefiles=None, watermark=None,
816	pagebreak=False):
817	"""Render pdf slips for various pages (also some pages
818	in the applicants module).
819	"""
820	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
821	# XXX: tell what the different parameters mean
822	style = getSampleStyleSheet()
823	creator = self.getPDFCreator(student)
824	data = []
825	doc_title = view.label
826	author = '%s (%s)' % (view.request.principal.title,
827	view.request.principal.id)
828	footer_text = view.label.split('\n')
829	if len(footer_text) > 2:
830	# We can add a department in first line, second line is used
831	footer_text = footer_text[1]
832	else:
833	# Only the first line is used for the footer
834	footer_text = footer_text[0]
835	if getattr(student, 'student_id', None) is not None:
836	footer_text = "%s - %s - " % (student.student_id, footer_text)
837
838	# Insert student data table
839	if student is not None:
840	if view.form_fields:
841	bd_translation = trans(_('Base Data'), portal_language)
842	data.append(Paragraph(bd_translation, HEADING_STYLE))
843	data.append(render_student_data(
844	studentview, view.context, omit_fields, lang=portal_language,
845	slipname=filename))
846
847	# Insert widgets
848	if view.form_fields:
849	data.append(Paragraph(view.title, HEADING_STYLE))
850	separators = getattr(self, 'SEPARATORS_DICT', {})
851	table = creator.getWidgetsTable(
852	view.form_fields, view.context, None, lang=portal_language,
853	separators=separators)
854	data.append(table)
855
856	# Insert scanned docs
857	if show_scans:
858	data.extend(docs_as_flowables(view, portal_language))
859
860	# Insert history
861	if filename == 'clearance_slip.pdf':
862	hist_translation = trans(_('Workflow History'), portal_language)
863	data.append(Paragraph(hist_translation, HEADING_STYLE))
864	data.extend(creator.fromStringList(student.history.messages))
865
866	# Insert content tables (optionally on second page)
867	if hasattr(view, 'tabletitle'):
868	for i in range(len(view.tabletitle)):
869	if tabledata[i] and tableheader[i]:
870	tabletitle = view.tabletitle[i]
871	if tabletitle.startswith('_PB_'):
872	data.append(PageBreak())
873	tabletitle = view.tabletitle[i].strip('_PB_')
874	#data.append(Spacer(1, 20))
875	data.append(Paragraph(tabletitle, HEADING_STYLE))
876	data.append(Spacer(1, 8))
877	contenttable = render_table_data(tableheader[i],tabledata[i])
878	data.append(contenttable)
879
880	# Insert signatures
881	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
882	# do not have a test for the following lines.
883	if signatures and not sigs_in_footer:
884	# Insert page break if necessary, else some space
885	if pagebreak:
886	data.append(PageBreak())
887	else:
888	data.append(Spacer(1, 20))
889	# Render one signature table per signature to
890	# get date and signature in line.
891	for signature in signatures:
892	signaturetables = get_signature_tables(signature)
893	data.append(signaturetables[0])
894
895	view.response.setHeader(
896	'Content-Type', 'application/pdf')
897	try:
898	pdf_stream = creator.create_pdf(
899	data, None, doc_title, author=author, footer=footer_text,
900	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
901	except IOError:
902	view.flash('Error in image file.')
903	return view.redirect(view.url(view.context))
904	except LayoutError, err:
905	view.flash(
906	'PDF file could not be created. Reportlab error message: %s'
907	% escape(err.message),
908	type="danger")
909	return view.redirect(view.url(view.context))
910	if mergefiles:
911	return self._mergeFiles(mergefiles, watermark, pdf_stream)
912	return pdf_stream
913
914	def _admissionText(self, student, portal_language):
915	inst_name = grok.getSite()['configuration'].name
916	text = trans(_(
917	'This is to inform you that you have been provisionally'
918	' admitted into ${a} as follows:', mapping = {'a': inst_name}),
919	portal_language)
920	return text
921
922	def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
923	pre_text=None, post_text=None,
924	topMargin = 1.5,
925	letterhead_path=None,
926	mergefiles=None, watermark=None):
927	"""Render pdf admission letter.
928	"""
929	if student is None:
930	return
931	style = getSampleStyleSheet()
932	if letterhead_path:
933	creator = getUtility(IPDFCreator, name='letter')
934	else:
935	creator = self.getPDFCreator(student)
936	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
937	data = []
938	doc_title = view.label
939	author = '%s (%s)' % (view.request.principal.title,
940	view.request.principal.id)
941	footer_text = view.label.split('\n')
942	if len(footer_text) > 2:
943	# We can add a department in first line
944	footer_text = footer_text[1]
945	else:
946	# Only the first line is used for the footer
947	footer_text = footer_text[0]
948	if getattr(student, 'student_id', None) is not None:
949	footer_text = "%s - %s - " % (student.student_id, footer_text)
950
951	# Text before student data
952	if pre_text is None:
953	html = format_html(self._admissionText(student, portal_language))
954	else:
955	html = format_html(pre_text)
956	if html:
957	data.append(Paragraph(html, NOTE_STYLE))
958	data.append(Spacer(1, 20))
959
960	# Student data
961	data.append(render_student_data(view, student,
962	omit_fields, lang=portal_language,
963	slipname='admission_slip.pdf'))
964
965	# Text after student data
966	data.append(Spacer(1, 20))
967	if post_text is None:
968	datelist = student.history.messages[0].split()[0].split('-')
969	creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
970	post_text = trans(_(
971	'Your Kofa student record was created on ${a}.',
972	mapping = {'a': creation_date}),
973	portal_language)
974	#html = format_html(post_text)
975	#data.append(Paragraph(html, NOTE_STYLE))
976
977	# Create pdf stream
978	view.response.setHeader(
979	'Content-Type', 'application/pdf')
980	pdf_stream = creator.create_pdf(
981	data, None, doc_title, author=author, footer=footer_text,
982	note=post_text, topMargin=topMargin,
983	letterhead_path=letterhead_path)
984	if mergefiles:
985	return self._mergeFiles(mergefiles, watermark, pdf_stream)
986	return pdf_stream
987
988	def renderPDFTranscript(self, view, filename='transcript.pdf',
989	student=None,
990	studentview=None,
991	note=None,
992	signatures=(),
993	sigs_in_footer=(),
994	digital_sigs=(),
995	show_scans=True, topMargin=1.5,
996	omit_fields=(),
997	tableheader=None,
998	no_passport=False,
999	save_file=False):
1000	"""Render pdf slip of a transcripts.
1001	"""
1002	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
1003	# XXX: tell what the different parameters mean
1004	style = getSampleStyleSheet()
1005	creator = self.getPDFCreator(student)
1006	data = []
1007	doc_title = view.label
1008	author = '%s (%s)' % (view.request.principal.title,
1009	view.request.principal.id)
1010	footer_text = view.label.split('\n')
1011	if len(footer_text) > 2:
1012	# We can add a department in first line
1013	footer_text = footer_text[1]
1014	else:
1015	# Only the first line is used for the footer
1016	footer_text = footer_text[0]
1017	if getattr(student, 'student_id', None) is not None:
1018	footer_text = "%s - %s - " % (student.student_id, footer_text)
1019
1020	# Insert student data table
1021	if student is not None:
1022	#bd_translation = trans(_('Base Data'), portal_language)
1023	#data.append(Paragraph(bd_translation, HEADING_STYLE))
1024	data.append(render_student_data(
1025	studentview, view.context,
1026	omit_fields, lang=portal_language,
1027	slipname=filename,
1028	no_passport=no_passport))
1029
1030	transcript_data = view.context.getTranscriptData()
1031	levels_data = transcript_data[0]
1032
1033	contextdata = []
1034	f_label = trans(_('Course of Study:'), portal_language)
1035	f_label = Paragraph(f_label, ENTRY1_STYLE)
1036	f_text = formatted_text(view.context.certificate.longtitle)
1037	f_text = Paragraph(f_text, ENTRY1_STYLE)
1038	contextdata.append([f_label,f_text])
1039
1040	f_label = trans(_('Faculty:'), portal_language)
1041	f_label = Paragraph(f_label, ENTRY1_STYLE)
1042	f_text = formatted_text(
1043	view.context.certificate.__parent__.__parent__.__parent__.longtitle)
1044	f_text = Paragraph(f_text, ENTRY1_STYLE)
1045	contextdata.append([f_label,f_text])
1046
1047	f_label = trans(_('Department:'), portal_language)
1048	f_label = Paragraph(f_label, ENTRY1_STYLE)
1049	f_text = formatted_text(
1050	view.context.certificate.__parent__.__parent__.longtitle)
1051	f_text = Paragraph(f_text, ENTRY1_STYLE)
1052	contextdata.append([f_label,f_text])
1053
1054	f_label = trans(_('Entry Session:'), portal_language)
1055	f_label = Paragraph(f_label, ENTRY1_STYLE)
1056	f_text = formatted_text(
1057	view.session_dict.get(view.context.entry_session))
1058	f_text = Paragraph(f_text, ENTRY1_STYLE)
1059	contextdata.append([f_label,f_text])
1060
1061	f_label = trans(_('Entry Mode:'), portal_language)
1062	f_label = Paragraph(f_label, ENTRY1_STYLE)
1063	f_text = formatted_text(view.studymode_dict.get(
1064	view.context.entry_mode))
1065	f_text = Paragraph(f_text, ENTRY1_STYLE)
1066	contextdata.append([f_label,f_text])
1067
1068	f_label = trans(_('Cumulative GPA:'), portal_language)
1069	f_label = Paragraph(f_label, ENTRY1_STYLE)
1070	format_float = getUtility(IKofaUtils).format_float
1071	cgpa = format_float(transcript_data[1], 3)
1072	if student.state == GRADUATED:
1073	f_text = formatted_text('%s (%s)' % (
1074	cgpa, self.getClassFromCGPA(transcript_data[1], student)[1]))
1075	else:
1076	f_text = formatted_text('%s' % cgpa)
1077	f_text = Paragraph(f_text, ENTRY1_STYLE)
1078	contextdata.append([f_label,f_text])
1079
1080	contexttable = Table(contextdata,style=SLIP_STYLE)
1081	data.append(contexttable)
1082
1083	transcripttables = render_transcript_data(
1084	view, tableheader, levels_data, lang=portal_language)
1085	data.extend(transcripttables)
1086
1087	# Insert signatures
1088	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
1089	# do not have a test for the following lines.
1090	if signatures and not sigs_in_footer:
1091	data.append(Spacer(1, 20))
1092	# Render one signature table per signature to
1093	# get date and signature in line.
1094	for signature in signatures:
1095	signaturetables = get_signature_tables(signature)
1096	data.append(signaturetables[0])
1097
1098	# Insert digital signatures
1099	if digital_sigs:
1100	data.append(Spacer(1, 20))
1101	sigs = digital_sigs.split('\n')
1102	for sig in sigs:
1103	data.append(Paragraph(sig, NOTE_STYLE))
1104
1105	view.response.setHeader(
1106	'Content-Type', 'application/pdf')
1107	try:
1108	pdf_stream = creator.create_pdf(
1109	data, None, doc_title, author=author, footer=footer_text,
1110	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
1111	except IOError:
1112	view.flash(_('Error in image file.'))
1113	return view.redirect(view.url(view.context))
1114	if save_file:
1115	self._saveTranscriptPDF(student, pdf_stream)
1116	return
1117	return pdf_stream
1118
1119	def renderPDFCourseticketsOverview(
1120	self, view, name, session, data, lecturers, orientation,
1121	title_length, note):
1122	"""Render pdf slip of course tickets for a lecturer.
1123	"""
1124	filename = '%s_%s_%s_%s.pdf' % (
1125	name, view.context.code, session, view.request.principal.id)
1126	try:
1127	session = academic_sessions_vocab.getTerm(session).title
1128	except LookupError:
1129	session = _('void')
1130	creator = getUtility(IPDFCreator, name=orientation)
1131	style = getSampleStyleSheet()
1132	pdf_data = []
1133	pdf_data += [Paragraph(
1134	translate(_('<b>Lecturer(s): ${a}</b>',
1135	mapping = {'a':lecturers})), style["Normal"]),]
1136	pdf_data += [Paragraph(
1137	translate(_('<b>Credits: ${a}</b>',
1138	mapping = {'a':view.context.credits})), style["Normal"]),]
1139	# Not used in base package.
1140	if data[1]:
1141	pdf_data += [Paragraph(
1142	translate(_('<b>${a}</b>',
1143	mapping = {'a':data[1][0]})), style["Normal"]),]
1144	pdf_data += [Paragraph(
1145	translate(_('<b>${a}</b>',
1146	mapping = {'a':data[1][1]})), style["Normal"]),]
1147	pdf_data += [Paragraph(
1148	translate(_('<b>Total Students: ${a}</b>',
1149	mapping = {'a':data[1][2]})), style["Normal"]),]
1150	pdf_data += [Paragraph(
1151	translate(_('<b>Total Pass: ${a} (${b}%)</b>',
1152	mapping = {'a':data[1][3],'b':data[1][4]})), style["Normal"]),]
1153	pdf_data += [Paragraph(
1154	translate(_('<b>Total Fail: ${a} (${b}%)</b>',
1155	mapping = {'a':data[1][5],'b':data[1][6]})), style["Normal"]),]
1156	grade_stats = []
1157	for item in sorted(data[1][7].items()):
1158	grade_stats.append(('%s=%s' % (item[0], item[1])))
1159	grade_stats_string = ', '.join(grade_stats)
1160	pdf_data += [Paragraph(
1161	translate(_('<b>${a}</b>',
1162	mapping = {'a':grade_stats_string})), style["Normal"]),]
1163	pdf_data.append(Spacer(1, 20))
1164	colWidths = [None] * len(data[0][0])
1165	pdf_data += [Table(data[0], colWidths=colWidths, style=CONTENT_STYLE,
1166	repeatRows=1)]
1167	# Process title if too long
1168	title = " ".join(view.context.title.split())
1169	ct = textwrap.fill(title, title_length)
1170	ft = "" # title
1171	#if len(textwrap.wrap(title, title_length)) > 1:
1172	# ft = textwrap.wrap(title, title_length)[0] + ' ...'
1173	doc_title = translate(_('${a} (${b})\nAcademic Session ${d}',
1174	mapping = {'a':ct,
1175	'b':view.context.code,
1176	'd':session}))
1177	if name == 'attendance':
1178	doc_title += '\n' + translate(_('Attendance Sheet'))
1179	if name == 'coursetickets':
1180	doc_title += '\n' + translate(_('Course Tickets Overview'))
1181	#footer_title = translate(_('${a} (${b}) - ${d}',
1182	# mapping = {'a':ft,
1183	# 'b':view.context.code,
1184	# 'd':session}))
1185	footer_title = translate(_('${b} - ${d}',
1186	mapping = {'b':view.context.code,
1187	'd':session}))
1188	author = '%s (%s)' % (view.request.principal.title,
1189	view.request.principal.id)
1190	view.response.setHeader(
1191	'Content-Type', 'application/pdf')
1192	view.response.setHeader(
1193	'Content-Disposition:', 'attachment; filename="%s' % filename)
1194	pdf_stream = creator.create_pdf(
1195	pdf_data, None, doc_title, author, footer_title + ' -', note
1196	)
1197	return pdf_stream
1198
1199	def updateCourseTickets(self, course):
1200	"""Udate course tickets if course attributes were changed.
1201	"""
1202	current_academic_session = grok.getSite()[
1203	'configuration'].current_academic_session
1204	if not current_academic_session:
1205	return
1206	cat = queryUtility(ICatalog, name='coursetickets_catalog')
1207	coursetickets = cat.searchResults(
1208	code=(course.code, course.code),
1209	session=(current_academic_session,current_academic_session))
1210	number = 0
1211	ob_class = self.__implemented__.__name__.replace('waeup.kofa.', '')
1212	for ticket in coursetickets:
1213	if ticket.credits == course.credits:
1214	continue
1215	if ticket.student.current_session != current_academic_session:
1216	continue
1217	if ticket.student.state not in (PAID,):
1218	continue
1219	number += 1
1220	ticket.student.__parent__.logger.info(
1221	'%s - %s %s/%s credits updated (%s->%s)' % (
1222	ob_class, ticket.student.student_id,
1223	ticket.level, ticket.code, course.credits,
1224	ticket.credits))
1225	ticket.credits = course.credits
1226	return number
1227
1228	#: A dictionary which maps widget names to headlines. The headline
1229	#: is rendered in forms and on pdf slips above the respective
1230	#: display or input widget. There are no separating headlines
1231	#: in the base package.
1232	SEPARATORS_DICT = {}
1233
1234	#: A tuple containing names of file upload viewlets which are not shown
1235	#: on the `StudentClearanceManageFormPage`. Nothing is being skipped
1236	#: in the base package. This attribute makes only sense, if intermediate
1237	#: custom packages are being used, like we do for all Nigerian portals.
1238	SKIP_UPLOAD_VIEWLETS = ()
1239
1240	#: A tuple containing the names of registration states in which changing of
1241	#: passport pictures is allowed.
1242	PORTRAIT_CHANGE_STATES = (ADMITTED,)
1243
1244	#: A tuple containing the names of registration states in which changing of
1245	#: scanned signatures is allowed.
1246	SIGNATURE_CHANGE_STATES = ()
1247
1248	#: A tuple containing all exporter names referring to students or
1249	#: subobjects thereof.
1250	STUDENT_EXPORTER_NAMES = (
1251	'students',
1252	'studentstudycourses',
1253	'studentstudylevels',
1254	'coursetickets',
1255	'studentpayments',
1256	'bedtickets',
1257	'trimmed',
1258	'outstandingcourses',
1259	'unpaidpayments',
1260	'sfpaymentsoverview',
1261	'sessionpaymentsoverview',
1262	'studylevelsoverview',
1263	'combocard',
1264	'bursary',
1265	'accommodationpayments',
1266	'transcriptdata',
1267	'trimmedpayments',
1268	)
1269
1270	#: A tuple containing all exporter names needed for backing
1271	#: up student data
1272	STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
1273	'studentstudylevels', 'coursetickets',
1274	'studentpayments', 'bedtickets')
1275
1276	# Maximum size of upload files in kB
1277	MAX_KB = 250
1278
1279	#: A prefix used when generating new student ids. Each student id will
1280	#: start with this string. The default is 'K' for Kofa.
1281	STUDENT_ID_PREFIX = u'K'

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