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source: main/waeup.kofa/trunk/src/waeup/kofa/students/utils.py @ 15823

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1	## $Id: utils.py 15823 2019-11-18 20:45:32Z 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 cgi import escape
23	from time import time
24	from cStringIO import StringIO
25	from reportlab.lib import colors
26	from reportlab.lib.units import cm
27	from reportlab.lib.pagesizes import A4
28	from reportlab.lib.styles import getSampleStyleSheet
29	from reportlab.platypus import Paragraph, Image, Table, Spacer
30	from reportlab.platypus.doctemplate import LayoutError
31	from zope.event import notify
32	from zope.schema.interfaces import ConstraintNotSatisfied
33	from zope.component import getUtility, createObject
34	from zope.formlib.form import setUpEditWidgets
35	from zope.i18n import translate
36	from waeup.kofa.interfaces import (
37	IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED,
38	academic_sessions_vocab, IFileStoreNameChooser)
39	from waeup.kofa.interfaces import MessageFactory as _
40	from waeup.kofa.students.interfaces import IStudentsUtils
41	from waeup.kofa.students.workflow import ADMITTED
42	from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
43	from waeup.kofa.browser.pdf import (
44	ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
45	get_signature_tables, get_qrcode)
46	from waeup.kofa.browser.interfaces import IPDFCreator
47	from waeup.kofa.utils.helpers import to_timezone
48
49	SLIP_STYLE = [
50	('VALIGN',(0,0),(-1,-1),'TOP'),
51	#('FONT', (0,0), (-1,-1), 'Helvetica', 11),
52	]
53
54	CONTENT_STYLE = [
55	('VALIGN',(0,0),(-1,-1),'TOP'),
56	#('FONT', (0,0), (-1,-1), 'Helvetica', 8),
57	#('TEXTCOLOR',(0,0),(-1,0),colors.white),
58	#('BACKGROUND',(0,0),(-1,0),colors.black),
59	('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
60	('BOX', (0,0), (-1,-1), 1, colors.black),
61	]
62
63	FONT_SIZE = 10
64	FONT_COLOR = 'black'
65
66	def trans(text, lang):
67	# shortcut
68	return translate(text, 'waeup.kofa', target_language=lang)
69
70	def formatted_text(text, color=FONT_COLOR, lang='en'):
71	"""Turn `text`, `color` and `size` into an HTML snippet.
72
73	The snippet is suitable for use with reportlab and generating PDFs.
74	Wraps the `text` into a ``<font>`` tag with passed attributes.
75
76	Also non-strings are converted. Raw strings are expected to be
77	utf-8 encoded (usually the case for widgets etc.).
78
79	Finally, a br tag is added if widgets contain div tags
80	which are not supported by reportlab.
81
82	The returned snippet is unicode type.
83	"""
84	if not isinstance(text, unicode):
85	if isinstance(text, basestring):
86	text = text.decode('utf-8')
87	else:
88	text = unicode(text)
89	if text == 'None':
90	text = ''
91	# Very long matriculation numbers need to be wrapped
92	if text.find(' ') == -1 and len(text.split('/')) > 6:
93	text = '/'.join(text.split('/')[:5]) + \
94	'/ ' + '/'.join(text.split('/')[5:])
95	# Mainly for boolean values we need our customized
96	# localisation of the zope domain
97	text = translate(text, 'zope', target_language=lang)
98	text = text.replace('</div>', '<br /></div>')
99	tag1 = u'<font color="%s">' % (color)
100	return tag1 + u'%s</font>' % text
101
102	def generate_student_id():
103	students = grok.getSite()['students']
104	new_id = students.unique_student_id
105	return new_id
106
107	def set_up_widgets(view, ignore_request=False):
108	view.adapters = {}
109	view.widgets = setUpEditWidgets(
110	view.form_fields, view.prefix, view.context, view.request,
111	adapters=view.adapters, for_display=True,
112	ignore_request=ignore_request
113	)
114
115	def render_student_data(studentview, context, omit_fields=(),
116	lang='en', slipname=None, no_passport=False):
117	"""Render student table for an existing frame.
118	"""
119	width, height = A4
120	set_up_widgets(studentview, ignore_request=True)
121	data_left = []
122	data_middle = []
123	style = getSampleStyleSheet()
124	img = getUtility(IExtFileStore).getFileByContext(
125	studentview.context, attr='passport.jpg')
126	if img is None:
127	from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
128	img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
129	doc_img = Image(img.name, width=4cm, height=4cm, kind='bound')
130	data_left.append([doc_img])
131	#data.append([Spacer(1, 12)])
132
133	f_label = trans(_('Name:'), lang)
134	f_label = Paragraph(f_label, ENTRY1_STYLE)
135	f_text = formatted_text(studentview.context.display_fullname)
136	f_text = Paragraph(f_text, ENTRY1_STYLE)
137	data_middle.append([f_label,f_text])
138
139	for widget in studentview.widgets:
140	if 'name' in widget.name:
141	continue
142	f_label = translate(
143	widget.label.strip(), 'waeup.kofa',
144	target_language=lang)
145	f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
146	f_text = formatted_text(widget(), lang=lang)
147	f_text = Paragraph(f_text, ENTRY1_STYLE)
148	data_middle.append([f_label,f_text])
149
150	if getattr(studentview.context, 'certcode', None):
151	if not 'certificate' in omit_fields:
152	f_label = trans(_('Study Course:'), lang)
153	f_label = Paragraph(f_label, ENTRY1_STYLE)
154	f_text = formatted_text(
155	studentview.context['studycourse'].certificate.longtitle)
156	f_text = Paragraph(f_text, ENTRY1_STYLE)
157	data_middle.append([f_label,f_text])
158	if not 'department' in omit_fields:
159	f_label = trans(_('Department:'), lang)
160	f_label = Paragraph(f_label, ENTRY1_STYLE)
161	f_text = formatted_text(
162	studentview.context[
163	'studycourse'].certificate.__parent__.__parent__.longtitle,
164	)
165	f_text = Paragraph(f_text, ENTRY1_STYLE)
166	data_middle.append([f_label,f_text])
167	if not 'faculty' in omit_fields:
168	f_label = trans(_('Faculty:'), lang)
169	f_label = Paragraph(f_label, ENTRY1_STYLE)
170	f_text = formatted_text(
171	studentview.context[
172	'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
173	)
174	f_text = Paragraph(f_text, ENTRY1_STYLE)
175	data_middle.append([f_label,f_text])
176	if not 'current_mode' in omit_fields:
177	studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
178	sm = studymodes_dict[studentview.context.current_mode]
179	f_label = trans(_('Study Mode:'), lang)
180	f_label = Paragraph(f_label, ENTRY1_STYLE)
181	f_text = formatted_text(sm)
182	f_text = Paragraph(f_text, ENTRY1_STYLE)
183	data_middle.append([f_label,f_text])
184	if not 'entry_session' in omit_fields:
185	f_label = trans(_('Entry Session:'), lang)
186	f_label = Paragraph(f_label, ENTRY1_STYLE)
187	entry_session = studentview.context.entry_session
188	try:
189	entry_session = academic_sessions_vocab.getTerm(
190	entry_session).title
191	except LookupError:
192	entry_session = _('void')
193	f_text = formatted_text(entry_session)
194	f_text = Paragraph(f_text, ENTRY1_STYLE)
195	data_middle.append([f_label,f_text])
196	# Requested by Uniben, does not really make sense
197	if not 'current_level' in omit_fields:
198	f_label = trans(_('Current Level:'), lang)
199	f_label = Paragraph(f_label, ENTRY1_STYLE)
200	current_level = studentview.context['studycourse'].current_level
201	studylevelsource = StudyLevelSource().factory
202	current_level = studylevelsource.getTitle(
203	studentview.context, current_level)
204	f_text = formatted_text(current_level)
205	f_text = Paragraph(f_text, ENTRY1_STYLE)
206	data_middle.append([f_label,f_text])
207	if not 'date_of_birth' in omit_fields:
208	f_label = trans(_('Date of Birth:'), lang)
209	f_label = Paragraph(f_label, ENTRY1_STYLE)
210	date_of_birth = studentview.context.date_of_birth
211	tz = getUtility(IKofaUtils).tzinfo
212	date_of_birth = to_timezone(date_of_birth, tz)
213	if date_of_birth is not None:
214	date_of_birth = date_of_birth.strftime("%d/%m/%Y")
215	f_text = formatted_text(date_of_birth)
216	f_text = Paragraph(f_text, ENTRY1_STYLE)
217	data_middle.append([f_label,f_text])
218
219	if no_passport:
220	table = Table(data_middle,style=SLIP_STYLE)
221	table.hAlign = 'LEFT'
222	return table
223
224	# append QR code to the right
225	if slipname:
226	url = studentview.url(context, slipname)
227	data_right = [[get_qrcode(url, width=70.0)]]
228	table_right = Table(data_right,style=SLIP_STYLE)
229	else:
230	table_right = None
231
232	table_left = Table(data_left,style=SLIP_STYLE)
233	table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5cm, 5cm])
234	table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
235	return table
236
237	def render_table_data(tableheader, tabledata, lang='en'):
238	"""Render children table for an existing frame.
239	"""
240	data = []
241	#data.append([Spacer(1, 12)])
242	line = []
243	style = getSampleStyleSheet()
244	for element in tableheader:
245	field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
246	field = Paragraph(field, style["Normal"])
247	line.append(field)
248	data.append(line)
249	for ticket in tabledata:
250	line = []
251	for element in tableheader:
252	field = formatted_text(getattr(ticket,element[1],u' '))
253	field = Paragraph(field, style["Normal"])
254	line.append(field)
255	data.append(line)
256	table = Table(data,colWidths=[
257	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
258	return table
259
260	def render_transcript_data(view, tableheader, levels_data, lang='en'):
261	"""Render children table for an existing frame.
262	"""
263	data = []
264	style = getSampleStyleSheet()
265	format_float = getUtility(IKofaUtils).format_float
266	for level in levels_data:
267	level_obj = level['level']
268	tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
269	headerline = []
270	tabledata = []
271	if 'evel' in view.level_dict.get('ticket.level', str(level_obj.level)):
272	subheader = '%s %s, %s' % (
273	trans(_('Session'), lang),
274	view.session_dict[level_obj.level_session],
275	view.level_dict.get('ticket.level', str(level_obj.level)))
276	else:
277	subheader = '%s %s, %s %s' % (
278	trans(_('Session'), lang),
279	view.session_dict[level_obj.level_session],
280	trans(_('Level'), lang),
281	view.level_dict.get(level_obj.level, str(level_obj.level)))
282	data.append(Paragraph(subheader, HEADING_STYLE))
283	for element in tableheader:
284	field = '<strong>%s</strong>' % formatted_text(element[0])
285	field = Paragraph(field, style["Normal"])
286	headerline.append(field)
287	tabledata.append(headerline)
288	for ticket in tickets:
289	ticketline = []
290	for element in tableheader:
291	field = formatted_text(getattr(ticket,element[1],u' '))
292	field = Paragraph(field, style["Normal"])
293	ticketline.append(field)
294	tabledata.append(ticketline)
295	table = Table(tabledata,colWidths=[
296	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
297	data.append(table)
298	sgpa = format_float(level['sgpa'], 2)
299	sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), sgpa)
300	#sgpa = '%s: %.2f' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
301	data.append(Paragraph(sgpa, style["Normal"]))
302	if getattr(level_obj, 'transcript_remark', None):
303	remark = '%s: %s' % (
304	trans('Transcript Remark', lang),
305	getattr(level_obj, 'transcript_remark'))
306	data.append(Paragraph(remark, style["Normal"]))
307	return data
308
309	def docs_as_flowables(view, lang='en'):
310	"""Create reportlab flowables out of scanned docs.
311	"""
312	# XXX: fix circular import problem
313	from waeup.kofa.browser.fileviewlets import FileManager
314	from waeup.kofa.browser import DEFAULT_IMAGE_PATH
315	style = getSampleStyleSheet()
316	data = []
317
318	# Collect viewlets
319	fm = FileManager(view.context, view.request, view)
320	fm.update()
321	if fm.viewlets:
322	sc_translation = trans(_('Scanned Documents'), lang)
323	data.append(Paragraph(sc_translation, HEADING_STYLE))
324	# Insert list of scanned documents
325	table_data = []
326	for viewlet in fm.viewlets:
327	if viewlet.file_exists:
328	# Show viewlet only if file exists
329	f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
330	img_path = getattr(getUtility(IExtFileStore).getFileByContext(
331	view.context, attr=viewlet.download_name), 'name', None)
332	#f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
333	if img_path is None:
334	pass
335	elif not img_path[-4:] in ('.jpg', '.JPG'):
336	# reportlab requires jpg images, I think.
337	f_text = Paragraph('%s (not displayable)' % (
338	viewlet.title,), ENTRY1_STYLE)
339	else:
340	f_text = Image(img_path, width=2cm, height=1cm, kind='bound')
341	table_data.append([f_label, f_text])
342	if table_data:
343	# safety belt; empty tables lead to problems.
344	data.append(Table(table_data, style=SLIP_STYLE))
345	return data
346
347	class StudentsUtils(grok.GlobalUtility):
348	"""A collection of methods subject to customization.
349	"""
350	grok.implements(IStudentsUtils)
351
352	def getReturningData(self, student):
353	""" Define what happens after school fee payment
354	depending on the student's senate verdict.
355	In the base configuration current level is always increased
356	by 100 no matter which verdict has been assigned.
357	"""
358	new_level = student['studycourse'].current_level + 100
359	new_session = student['studycourse'].current_session + 1
360	return new_session, new_level
361
362	def setReturningData(self, student):
363	""" Define what happens after school fee payment
364	depending on the student's senate verdict.
365	This method folllows the same algorithm as `getReturningData` but
366	it also sets the new values.
367	"""
368	new_session, new_level = self.getReturningData(student)
369	try:
370	student['studycourse'].current_level = new_level
371	except ConstraintNotSatisfied:
372	# Do not change level if level exceeds the
373	# certificate's end_level.
374	pass
375	student['studycourse'].current_session = new_session
376	verdict = student['studycourse'].current_verdict
377	student['studycourse'].current_verdict = '0'
378	student['studycourse'].previous_verdict = verdict
379	return
380
381	def _getSessionConfiguration(self, session):
382	try:
383	return grok.getSite()['configuration'][str(session)]
384	except KeyError:
385	return None
386
387	def _isPaymentDisabled(self, p_session, category, student):
388	academic_session = self._getSessionConfiguration(p_session)
389	if category == 'schoolfee' and \
390	'sf_all' in academic_session.payment_disabled:
391	return True
392	return False
393
394	def samePaymentMade(self, student, category, p_item, p_session):
395	for key in student['payments'].keys():
396	ticket = student['payments'][key]
397	if ticket.p_state == 'paid' and\
398	ticket.p_category == category and \
399	ticket.p_item == p_item and \
400	ticket.p_session == p_session:
401	return True
402	return False
403
404	def setPaymentDetails(self, category, student,
405	previous_session, previous_level, combi=[]):
406	"""Create a payment ticket and set the payment data of a
407	student for the payment category specified.
408	"""
409	p_item = u''
410	amount = 0.0
411	if previous_session:
412	if previous_session < student['studycourse'].entry_session:
413	return _('The previous session must not fall below '
414	'your entry session.'), None
415	if category == 'schoolfee':
416	# School fee is always paid for the following session
417	if previous_session > student['studycourse'].current_session:
418	return _('This is not a previous session.'), None
419	else:
420	if previous_session > student['studycourse'].current_session - 1:
421	return _('This is not a previous session.'), None
422	p_session = previous_session
423	p_level = previous_level
424	p_current = False
425	else:
426	p_session = student['studycourse'].current_session
427	p_level = student['studycourse'].current_level
428	p_current = True
429	academic_session = self._getSessionConfiguration(p_session)
430	if academic_session == None:
431	return _(u'Session configuration object is not available.'), None
432	# Determine fee.
433	if category == 'schoolfee':
434	try:
435	certificate = student['studycourse'].certificate
436	p_item = certificate.code
437	except (AttributeError, TypeError):
438	return _('Study course data are incomplete.'), None
439	if previous_session:
440	# Students can pay for previous sessions in all
441	# workflow states. Fresh students are excluded by the
442	# update method of the PreviousPaymentAddFormPage.
443	if previous_level == 100:
444	amount = getattr(certificate, 'school_fee_1', 0.0)
445	else:
446	amount = getattr(certificate, 'school_fee_2', 0.0)
447	else:
448	if student.state == CLEARED:
449	amount = getattr(certificate, 'school_fee_1', 0.0)
450	elif student.state == RETURNING:
451	# In case of returning school fee payment the
452	# payment session and level contain the values of
453	# the session the student has paid for. Payment
454	# session is always next session.
455	p_session, p_level = self.getReturningData(student)
456	academic_session = self._getSessionConfiguration(p_session)
457	if academic_session == None:
458	return _(
459	u'Session configuration object is not available.'
460	), None
461	amount = getattr(certificate, 'school_fee_2', 0.0)
462	elif student.is_postgrad and student.state == PAID:
463	# Returning postgraduate students also pay for the
464	# next session but their level always remains the
465	# same.
466	p_session += 1
467	academic_session = self._getSessionConfiguration(p_session)
468	if academic_session == None:
469	return _(
470	u'Session configuration object is not available.'
471	), None
472	amount = getattr(certificate, 'school_fee_2', 0.0)
473	elif category == 'clearance':
474	try:
475	p_item = student['studycourse'].certificate.code
476	except (AttributeError, TypeError):
477	return _('Study course data are incomplete.'), None
478	amount = academic_session.clearance_fee
479	elif category == 'bed_allocation':
480	p_item = self.getAccommodationDetails(student)['bt']
481	amount = academic_session.booking_fee
482	elif category == 'hostel_maintenance':
483	amount = 0.0
484	bedticket = student['accommodation'].get(
485	str(student.current_session), None)
486	if bedticket is not None and bedticket.bed is not None:
487	p_item = bedticket.bed_coordinates
488	if bedticket.bed.__parent__.maint_fee > 0:
489	amount = bedticket.bed.__parent__.maint_fee
490	else:
491	# fallback
492	amount = academic_session.maint_fee
493	else:
494	return _(u'No bed allocated.'), None
495	elif category == 'combi' and combi:
496	categories = getUtility(IKofaUtils).COMBI_PAYMENT_CATEGORIES
497	for cat in combi:
498	fee_name = cat + '_fee'
499	cat_amount = getattr(academic_session, fee_name, 0.0)
500	if not cat_amount:
501	return _('%s undefined.' % categories[cat]), None
502	amount += cat_amount
503	p_item += u'%s + ' % categories[cat]
504	p_item = p_item.strip(' + ')
505	else:
506	fee_name = category + '_fee'
507	amount = getattr(academic_session, fee_name, 0.0)
508	if amount in (0.0, None):
509	return _('Amount could not be determined.'), None
510	if self.samePaymentMade(student, category, p_item, p_session):
511	return _('This type of payment has already been made.'), None
512	if self._isPaymentDisabled(p_session, category, student):
513	return _('This category of payments has been disabled.'), None
514	payment = createObject(u'waeup.StudentOnlinePayment')
515	timestamp = ("%d" % int(time()*10000))[1:]
516	payment.p_id = "p%s" % timestamp
517	payment.p_category = category
518	payment.p_item = p_item
519	payment.p_session = p_session
520	payment.p_level = p_level
521	payment.p_current = p_current
522	payment.amount_auth = amount
523	payment.p_combi = combi
524	return None, payment
525
526	def setBalanceDetails(self, category, student,
527	balance_session, balance_level, balance_amount):
528	"""Create a balance payment ticket and set the payment data
529	as selected by the student.
530	"""
531	p_item = u'Balance'
532	p_session = balance_session
533	p_level = balance_level
534	p_current = False
535	amount = balance_amount
536	academic_session = self._getSessionConfiguration(p_session)
537	if academic_session == None:
538	return _(u'Session configuration object is not available.'), None
539	if amount in (0.0, None) or amount < 0:
540	return _('Amount must be greater than 0.'), None
541	payment = createObject(u'waeup.StudentOnlinePayment')
542	timestamp = ("%d" % int(time()*10000))[1:]
543	payment.p_id = "p%s" % timestamp
544	payment.p_category = category
545	payment.p_item = p_item
546	payment.p_session = p_session
547	payment.p_level = p_level
548	payment.p_current = p_current
549	payment.amount_auth = amount
550	return None, payment
551
552	def increaseMatricInteger(self, student):
553	"""Increase counter for matric numbers.
554	This counter can be a centrally stored attribute or an attribute of
555	faculties, departments or certificates. In the base package the counter
556	is as an attribute of the site configuration container.
557	"""
558	grok.getSite()['configuration'].next_matric_integer += 1
559	return
560
561	def constructMatricNumber(self, student):
562	"""Fetch the matric number counter which fits the student and
563	construct the new matric number of the student.
564	In the base package the counter is returned which is as an attribute
565	of the site configuration container.
566	"""
567	next_integer = grok.getSite()['configuration'].next_matric_integer
568	if next_integer == 0:
569	return _('Matriculation number cannot be set.'), None
570	return None, unicode(next_integer)
571
572	def setMatricNumber(self, student):
573	"""Set matriculation number of student. If the student's matric number
574	is unset a new matric number is
575	constructed according to the matriculation number construction rules
576	defined in the `constructMatricNumber` method. The new matric number is
577	set, the students catalog updated. The corresponding matric number
578	counter is increased by one.
579
580	This method is tested but not used in the base package. It can
581	be used in custom packages by adding respective views
582	and by customizing `increaseMatricInteger` and `constructMatricNumber`
583	according to the university's matriculation number construction rules.
584
585	The method can be disabled by setting the counter to zero.
586	"""
587	if student.matric_number is not None:
588	return _('Matriculation number already set.'), None
589	if student.certcode is None:
590	return _('No certificate assigned.'), None
591	error, matric_number = self.constructMatricNumber(student)
592	if error:
593	return error, None
594	try:
595	student.matric_number = matric_number
596	except MatNumNotInSource:
597	return _('Matriculation number %s exists.' % matric_number), None
598	notify(grok.ObjectModifiedEvent(student))
599	self.increaseMatricInteger(student)
600	return None, matric_number
601
602	def getAccommodationDetails(self, student):
603	"""Determine the accommodation data of a student.
604	"""
605	d = {}
606	d['error'] = u''
607	hostels = grok.getSite()['hostels']
608	d['booking_session'] = hostels.accommodation_session
609	d['allowed_states'] = hostels.accommodation_states
610	d['startdate'] = hostels.startdate
611	d['enddate'] = hostels.enddate
612	d['expired'] = hostels.expired
613	# Determine bed type
614	studycourse = student['studycourse']
615	certificate = getattr(studycourse,'certificate',None)
616	entry_session = studycourse.entry_session
617	current_level = studycourse.current_level
618	if None in (entry_session, current_level, certificate):
619	return d
620	end_level = certificate.end_level
621	if current_level == 10:
622	bt = 'pr'
623	elif entry_session == grok.getSite()['hostels'].accommodation_session:
624	bt = 'fr'
625	elif current_level >= end_level:
626	bt = 'fi'
627	else:
628	bt = 're'
629	if student.sex == 'f':
630	sex = 'female'
631	else:
632	sex = 'male'
633	special_handling = 'regular'
634	d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
635	return d
636
637	def checkAccommodationRequirements(self, student, acc_details):
638	if acc_details.get('expired', False):
639	startdate = acc_details.get('startdate')
640	enddate = acc_details.get('enddate')
641	if startdate and enddate:
642	tz = getUtility(IKofaUtils).tzinfo
643	startdate = to_timezone(
644	startdate, tz).strftime("%d/%m/%Y %H:%M:%S")
645	enddate = to_timezone(
646	enddate, tz).strftime("%d/%m/%Y %H:%M:%S")
647	return _("Outside booking period: ${a} - ${b}",
648	mapping = {'a': startdate, 'b': enddate})
649	else:
650	return _("Outside booking period.")
651	if not acc_details.get('bt'):
652	return _("Your data are incomplete.")
653	if not student.state in acc_details['allowed_states']:
654	return _("You are in the wrong registration state.")
655	if student['studycourse'].current_session != acc_details[
656	'booking_session']:
657	return _('Your current session does not '
658	'match accommodation session.')
659	bsession = str(acc_details['booking_session'])
660	if bsession in student['accommodation'].keys() \
661	and not 'booking expired' in \
662	student['accommodation'][bsession].bed_coordinates:
663	return _('You already booked a bed space in '
664	'current accommodation session.')
665	return
666
667	def selectBed(self, available_beds):
668	"""Select a bed from a filtered list of available beds.
669	In the base configuration beds are sorted by the sort id
670	of the hostel and the bed number. The first bed found in
671	this sorted list is taken.
672	"""
673	sorted_beds = sorted(available_beds,
674	key=lambda bed: 1000 * bed.__parent__.sort_id + bed.bed_number)
675	return sorted_beds[0]
676
677	def _admissionText(self, student, portal_language):
678	inst_name = grok.getSite()['configuration'].name
679	text = trans(_(
680	'This is to inform you that you have been provisionally'
681	' admitted into ${a} as follows:', mapping = {'a': inst_name}),
682	portal_language)
683	return text
684
685	def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
686	pre_text=None, post_text=None,):
687	"""Render pdf admission letter.
688	"""
689	if student is None:
690	return
691	style = getSampleStyleSheet()
692	creator = self.getPDFCreator(student)
693	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
694	data = []
695	doc_title = view.label
696	author = '%s (%s)' % (view.request.principal.title,
697	view.request.principal.id)
698	footer_text = view.label.split('\n')
699	if len(footer_text) > 1:
700	# We can add a department in first line
701	footer_text = footer_text[1]
702	else:
703	# Only the first line is used for the footer
704	footer_text = footer_text[0]
705	if getattr(student, 'student_id', None) is not None:
706	footer_text = "%s - %s - " % (student.student_id, footer_text)
707
708	# Text before student data
709	if pre_text is None:
710	html = format_html(self._admissionText(student, portal_language))
711	else:
712	html = format_html(pre_text)
713	if html:
714	data.append(Paragraph(html, NOTE_STYLE))
715	data.append(Spacer(1, 20))
716
717	# Student data
718	data.append(render_student_data(view, student,
719	omit_fields, lang=portal_language,
720	slipname='admission_slip.pdf'))
721
722	# Text after student data
723	data.append(Spacer(1, 20))
724	if post_text is None:
725	datelist = student.history.messages[0].split()[0].split('-')
726	creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
727	post_text = trans(_(
728	'Your Kofa student record was created on ${a}.',
729	mapping = {'a': creation_date}),
730	portal_language)
731	#html = format_html(post_text)
732	#data.append(Paragraph(html, NOTE_STYLE))
733
734	# Create pdf stream
735	view.response.setHeader(
736	'Content-Type', 'application/pdf')
737	pdf_stream = creator.create_pdf(
738	data, None, doc_title, author=author, footer=footer_text,
739	note=post_text)
740	return pdf_stream
741
742	def getPDFCreator(self, context):
743	"""Get a pdf creator suitable for `context`.
744	The default implementation always returns the default creator.
745	"""
746	return getUtility(IPDFCreator)
747
748	def renderPDF(self, view, filename='slip.pdf', student=None,
749	studentview=None,
750	tableheader=[], tabledata=[],
751	note=None, signatures=None, sigs_in_footer=(),
752	show_scans=True, topMargin=1.5,
753	omit_fields=()):
754	"""Render pdf slips for various pages (also some pages
755	in the applicants module).
756	"""
757	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
758	# XXX: tell what the different parameters mean
759	style = getSampleStyleSheet()
760	creator = self.getPDFCreator(student)
761	data = []
762	doc_title = view.label
763	author = '%s (%s)' % (view.request.principal.title,
764	view.request.principal.id)
765	footer_text = view.label.split('\n')
766	if len(footer_text) > 1:
767	# We can add a department in first line, second line is used
768	footer_text = footer_text[1]
769	else:
770	# Only the first line is used for the footer
771	footer_text = footer_text[0]
772	if getattr(student, 'student_id', None) is not None:
773	footer_text = "%s - %s - " % (student.student_id, footer_text)
774
775	# Insert student data table
776	if student is not None:
777	bd_translation = trans(_('Base Data'), portal_language)
778	data.append(Paragraph(bd_translation, HEADING_STYLE))
779	data.append(render_student_data(
780	studentview, view.context, omit_fields, lang=portal_language,
781	slipname=filename))
782
783	# Insert widgets
784	if view.form_fields:
785	data.append(Paragraph(view.title, HEADING_STYLE))
786	separators = getattr(self, 'SEPARATORS_DICT', {})
787	table = creator.getWidgetsTable(
788	view.form_fields, view.context, None, lang=portal_language,
789	separators=separators)
790	data.append(table)
791
792	# Insert scanned docs
793	if show_scans:
794	data.extend(docs_as_flowables(view, portal_language))
795
796	# Insert history
797	if filename == 'clearance_slip.pdf':
798	hist_translation = trans(_('Workflow History'), portal_language)
799	data.append(Paragraph(hist_translation, HEADING_STYLE))
800	data.extend(creator.fromStringList(student.history.messages))
801
802	# Insert content tables (optionally on second page)
803	if hasattr(view, 'tabletitle'):
804	for i in range(len(view.tabletitle)):
805	if tabledata[i] and tableheader[i]:
806	#data.append(PageBreak())
807	#data.append(Spacer(1, 20))
808	data.append(Paragraph(view.tabletitle[i], HEADING_STYLE))
809	data.append(Spacer(1, 8))
810	contenttable = render_table_data(tableheader[i],tabledata[i])
811	data.append(contenttable)
812
813	# Insert signatures
814	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
815	# do not have a test for the following lines.
816	if signatures and not sigs_in_footer:
817	data.append(Spacer(1, 20))
818	# Render one signature table per signature to
819	# get date and signature in line.
820	for signature in signatures:
821	signaturetables = get_signature_tables(signature)
822	data.append(signaturetables[0])
823
824	view.response.setHeader(
825	'Content-Type', 'application/pdf')
826	try:
827	pdf_stream = creator.create_pdf(
828	data, None, doc_title, author=author, footer=footer_text,
829	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
830	except IOError:
831	view.flash('Error in image file.')
832	return view.redirect(view.url(view.context))
833	except LayoutError, err:
834	view.flash(
835	'PDF file could not be created. Reportlab error message: %s'
836	% escape(err.message),
837	type="danger")
838	return view.redirect(view.url(view.context))
839	return pdf_stream
840
841	def GPABoundaries(self, faccode=None, depcode=None, certcode=None):
842	return ((1, 'Fail'),
843	(1.5, 'Pass'),
844	(2.4, '3rd Class'),
845	(3.5, '2nd Class Lower'),
846	(4.5, '2nd Class Upper'),
847	(5, '1st Class'))
848
849	def getClassFromCGPA(self, gpa, student):
850	"""Determine the class of degree. In some custom packages
851	this class depends on e.g. the entry session of the student. In the
852	base package, it does not.
853	"""
854	if gpa < self.GPABoundaries()[0][0]:
855	return 0, self.GPABoundaries()[0][1]
856	if gpa < self.GPABoundaries()[1][0]:
857	return 1, self.GPABoundaries()[1][1]
858	if gpa < self.GPABoundaries()[2][0]:
859	return 2, self.GPABoundaries()[2][1]
860	if gpa < self.GPABoundaries()[3][0]:
861	return 3, self.GPABoundaries()[3][1]
862	if gpa < self.GPABoundaries()[4][0]:
863	return 4, self.GPABoundaries()[4][1]
864	if gpa <= self.GPABoundaries()[5][0]:
865	return 5, self.GPABoundaries()[5][1]
866	return
867
868	def getDegreeClassNumber(self, level_obj):
869	"""Get degree class number (used for SessionResultsPresentation
870	reports).
871	"""
872	if level_obj.gpa_params[1] == 0:
873	# No credits weighted
874	return 6
875	return self.getClassFromCGPA(
876	level_obj.cumulative_params[0], level_obj.student)[0]
877
878	def _saveTranscriptPDF(self, student, transcript):
879	"""Create a transcript PDF file and store it in student folder.
880	"""
881	file_store = getUtility(IExtFileStore)
882	file_id = IFileStoreNameChooser(student).chooseName(
883	attr="final_transcript.pdf")
884	file_store.createFile(file_id, StringIO(transcript))
885	return
886
887	def renderPDFTranscript(self, view, filename='transcript.pdf',
888	student=None,
889	studentview=None,
890	note=None,
891	signatures=(),
892	sigs_in_footer=(),
893	digital_sigs=(),
894	show_scans=True, topMargin=1.5,
895	omit_fields=(),
896	tableheader=None,
897	no_passport=False,
898	save_file=False):
899	"""Render pdf slip of a transcripts.
900	"""
901	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
902	# XXX: tell what the different parameters mean
903	style = getSampleStyleSheet()
904	creator = self.getPDFCreator(student)
905	data = []
906	doc_title = view.label
907	author = '%s (%s)' % (view.request.principal.title,
908	view.request.principal.id)
909	footer_text = view.label.split('\n')
910	if len(footer_text) > 2:
911	# We can add a department in first line
912	footer_text = footer_text[1]
913	else:
914	# Only the first line is used for the footer
915	footer_text = footer_text[0]
916	if getattr(student, 'student_id', None) is not None:
917	footer_text = "%s - %s - " % (student.student_id, footer_text)
918
919	# Insert student data table
920	if student is not None:
921	#bd_translation = trans(_('Base Data'), portal_language)
922	#data.append(Paragraph(bd_translation, HEADING_STYLE))
923	data.append(render_student_data(
924	studentview, view.context,
925	omit_fields, lang=portal_language,
926	slipname=filename,
927	no_passport=no_passport))
928
929	transcript_data = view.context.getTranscriptData()
930	levels_data = transcript_data[0]
931
932	contextdata = []
933	f_label = trans(_('Course of Study:'), portal_language)
934	f_label = Paragraph(f_label, ENTRY1_STYLE)
935	f_text = formatted_text(view.context.certificate.longtitle)
936	f_text = Paragraph(f_text, ENTRY1_STYLE)
937	contextdata.append([f_label,f_text])
938
939	f_label = trans(_('Faculty:'), portal_language)
940	f_label = Paragraph(f_label, ENTRY1_STYLE)
941	f_text = formatted_text(
942	view.context.certificate.__parent__.__parent__.__parent__.longtitle)
943	f_text = Paragraph(f_text, ENTRY1_STYLE)
944	contextdata.append([f_label,f_text])
945
946	f_label = trans(_('Department:'), portal_language)
947	f_label = Paragraph(f_label, ENTRY1_STYLE)
948	f_text = formatted_text(
949	view.context.certificate.__parent__.__parent__.longtitle)
950	f_text = Paragraph(f_text, ENTRY1_STYLE)
951	contextdata.append([f_label,f_text])
952
953	f_label = trans(_('Entry Session:'), portal_language)
954	f_label = Paragraph(f_label, ENTRY1_STYLE)
955	f_text = formatted_text(
956	view.session_dict.get(view.context.entry_session))
957	f_text = Paragraph(f_text, ENTRY1_STYLE)
958	contextdata.append([f_label,f_text])
959
960	f_label = trans(_('Entry Mode:'), portal_language)
961	f_label = Paragraph(f_label, ENTRY1_STYLE)
962	f_text = formatted_text(view.studymode_dict.get(
963	view.context.entry_mode))
964	f_text = Paragraph(f_text, ENTRY1_STYLE)
965	contextdata.append([f_label,f_text])
966
967	f_label = trans(_('Cumulative GPA:'), portal_language)
968	f_label = Paragraph(f_label, ENTRY1_STYLE)
969	format_float = getUtility(IKofaUtils).format_float
970	cgpa = format_float(transcript_data[1], 3)
971	f_text = formatted_text('%s (%s)' % (
972	cgpa, self.getClassFromCGPA(transcript_data[1], student)[1]))
973	f_text = Paragraph(f_text, ENTRY1_STYLE)
974	contextdata.append([f_label,f_text])
975
976	contexttable = Table(contextdata,style=SLIP_STYLE)
977	data.append(contexttable)
978
979	transcripttables = render_transcript_data(
980	view, tableheader, levels_data, lang=portal_language)
981	data.extend(transcripttables)
982
983	# Insert signatures
984	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
985	# do not have a test for the following lines.
986	if signatures and not sigs_in_footer:
987	data.append(Spacer(1, 20))
988	# Render one signature table per signature to
989	# get date and signature in line.
990	for signature in signatures:
991	signaturetables = get_signature_tables(signature)
992	data.append(signaturetables[0])
993
994	# Insert digital signatures
995	if digital_sigs:
996	data.append(Spacer(1, 20))
997	sigs = digital_sigs.split('\n')
998	for sig in sigs:
999	data.append(Paragraph(sig, NOTE_STYLE))
1000
1001	view.response.setHeader(
1002	'Content-Type', 'application/pdf')
1003	try:
1004	pdf_stream = creator.create_pdf(
1005	data, None, doc_title, author=author, footer=footer_text,
1006	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
1007	except IOError:
1008	view.flash(_('Error in image file.'))
1009	return view.redirect(view.url(view.context))
1010	if save_file:
1011	self._saveTranscriptPDF(student, pdf_stream)
1012	return
1013	return pdf_stream
1014
1015	def renderPDFCourseticketsOverview(
1016	self, view, name, session, data, lecturers, orientation,
1017	title_length, note):
1018	"""Render pdf slip of course tickets for a lecturer.
1019	"""
1020	filename = '%s_%s_%s_%s.pdf' % (
1021	name, view.context.code, session, view.request.principal.id)
1022	try:
1023	session = academic_sessions_vocab.getTerm(session).title
1024	except LookupError:
1025	session = _('void')
1026	creator = getUtility(IPDFCreator, name=orientation)
1027	style = getSampleStyleSheet()
1028	pdf_data = []
1029	pdf_data += [Paragraph(
1030	translate(_('<b>Lecturer(s): ${a}</b>',
1031	mapping = {'a':lecturers})), style["Normal"]),]
1032	pdf_data += [Paragraph(
1033	translate(_('<b>Credits: ${a}</b>',
1034	mapping = {'a':view.context.credits})), style["Normal"]),]
1035	# Not used in base package.
1036	if data[1]:
1037	pdf_data += [Paragraph(
1038	translate(_('<b>${a}</b>',
1039	mapping = {'a':data[1][0]})), style["Normal"]),]
1040	pdf_data += [Paragraph(
1041	translate(_('<b>${a}</b>',
1042	mapping = {'a':data[1][1]})), style["Normal"]),]
1043	pdf_data += [Paragraph(
1044	translate(_('<b>Total Students: ${a}</b>',
1045	mapping = {'a':data[1][2]})), style["Normal"]),]
1046	pdf_data += [Paragraph(
1047	translate(_('<b>Total Pass: ${a} (${b}%)</b>',
1048	mapping = {'a':data[1][3],'b':data[1][4]})), style["Normal"]),]
1049	pdf_data += [Paragraph(
1050	translate(_('<b>Total Fail: ${a} (${b}%)</b>',
1051	mapping = {'a':data[1][5],'b':data[1][6]})), style["Normal"]),]
1052	grade_stats = []
1053	for item in sorted(data[1][7].items()):
1054	grade_stats.append(('%s=%s' % (item[0], item[1])))
1055	grade_stats_string = ', '.join(grade_stats)
1056	pdf_data += [Paragraph(
1057	translate(_('<b>${a}</b>',
1058	mapping = {'a':grade_stats_string})), style["Normal"]),]
1059	pdf_data.append(Spacer(1, 20))
1060	colWidths = [None] * len(data[0][0])
1061	pdf_data += [Table(data[0], colWidths=colWidths, style=CONTENT_STYLE,
1062	repeatRows=1)]
1063	# Process title if too long
1064	title = " ".join(view.context.title.split())
1065	ct = textwrap.fill(title, title_length)
1066	ft = "" # title
1067	#if len(textwrap.wrap(title, title_length)) > 1:
1068	# ft = textwrap.wrap(title, title_length)[0] + ' ...'
1069	doc_title = translate(_('${a} (${b})\nAcademic Session ${d}',
1070	mapping = {'a':ct,
1071	'b':view.context.code,
1072	'd':session}))
1073	if name == 'attendance':
1074	doc_title += '\n' + translate(_('Attendance Sheet'))
1075	if name == 'coursetickets':
1076	doc_title += '\n' + translate(_('Course Tickets Overview'))
1077	#footer_title = translate(_('${a} (${b}) - ${d}',
1078	# mapping = {'a':ft,
1079	# 'b':view.context.code,
1080	# 'd':session}))
1081	footer_title = translate(_('${b} - ${d}',
1082	mapping = {'b':view.context.code,
1083	'd':session}))
1084	author = '%s (%s)' % (view.request.principal.title,
1085	view.request.principal.id)
1086	view.response.setHeader(
1087	'Content-Type', 'application/pdf')
1088	view.response.setHeader(
1089	'Content-Disposition:', 'attachment; filename="%s' % filename)
1090	pdf_stream = creator.create_pdf(
1091	pdf_data, None, doc_title, author, footer_title + ' -', note
1092	)
1093	return pdf_stream
1094
1095	def warnCreditsOOR(self, studylevel, course=None):
1096	"""Return message if credits are out of range. In the base
1097	package only maximum credits is set.
1098	"""
1099	if course and studylevel.total_credits + course.credits > 50:
1100	return _('Maximum credits exceeded.')
1101	elif studylevel.total_credits > 50:
1102	return _('Maximum credits exceeded.')
1103	return
1104
1105	def getBedCoordinates(self, bedticket):
1106	"""Return descriptive bed coordinates.
1107	This method can be used to customize the `display_coordinates`
1108	property method in order to display a
1109	customary description of the bed space.
1110	"""
1111	return bedticket.bed_coordinates
1112
1113	def clearance_disabled_message(self, student):
1114	"""Render message if clearance is disabled.
1115	"""
1116	try:
1117	session_config = grok.getSite()[
1118	'configuration'][str(student.current_session)]
1119	except KeyError:
1120	return _('Session configuration object is not available.')
1121	if not session_config.clearance_enabled:
1122	return _('Clearance is disabled for this session.')
1123	return None
1124
1125	#: A dictionary which maps widget names to headlines. The headline
1126	#: is rendered in forms and on pdf slips above the respective
1127	#: display or input widget. There are no separating headlines
1128	#: in the base package.
1129	SEPARATORS_DICT = {}
1130
1131	#: A tuple containing names of file upload viewlets which are not shown
1132	#: on the `StudentClearanceManageFormPage`. Nothing is being skipped
1133	#: in the base package. This attribute makes only sense, if intermediate
1134	#: custom packages are being used, like we do for all Nigerian portals.
1135	SKIP_UPLOAD_VIEWLETS = ()
1136
1137	#: A tuple containing the names of registration states in which changing of
1138	#: passport pictures is allowed.
1139	PORTRAIT_CHANGE_STATES = (ADMITTED,)
1140
1141	#: A tuple containing all exporter names referring to students or
1142	#: subobjects thereof.
1143	STUDENT_EXPORTER_NAMES = ('students', 'studentstudycourses',
1144	'studentstudylevels', 'coursetickets',
1145	'studentpayments', 'studentunpaidpayments',
1146	'bedtickets', 'sfpaymentsoverview', 'sessionpaymentsoverview',
1147	'studylevelsoverview', 'combocard', 'bursary',
1148	'accommodationpayments')
1149
1150	#: A tuple containing all exporter names needed for backing
1151	#: up student data
1152	STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
1153	'studentstudylevels', 'coursetickets',
1154	'studentpayments', 'bedtickets')
1155
1156	# Maximum size of upload files in kB
1157	MAX_KB = 250
1158
1159	#: A prefix used when generating new student ids. Each student id will
1160	#: start with this string. The default is 'K' for Kofa.
1161	STUDENT_ID_PREFIX = u'K'

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