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source: main/waeup.kofa/branches/uli-py3/src/waeup/kofa/students/utils.py @ 17403

Last change on this file since 17403 was 16034, checked in by Henrik Bettermann, 5 years ago
trimmedpayments is a student data exporter.
Property svn:keywords set to `Id`
File size: 51.6 KB

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1	## $Id: utils.py 16034 2020-03-10 21:39:00Z 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 reportlab.platypus.flowables import PageBreak
32	from zope.event import notify
33	from zope.schema.interfaces import ConstraintNotSatisfied
34	from zope.component import getUtility, createObject, queryUtility
35	from zope.catalog.interfaces import ICatalog
36	from zope.formlib.form import setUpEditWidgets
37	from zope.i18n import translate
38	from waeup.kofa.interfaces import (
39	IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED, GRADUATED,
40	academic_sessions_vocab, IFileStoreNameChooser)
41	from waeup.kofa.interfaces import MessageFactory as _
42	from waeup.kofa.students.interfaces import IStudentsUtils
43	from waeup.kofa.students.workflow import ADMITTED
44	from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
45	from waeup.kofa.browser.pdf import (
46	ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
47	get_signature_tables, get_qrcode)
48	from waeup.kofa.browser.interfaces import IPDFCreator
49	from waeup.kofa.utils.helpers import to_timezone
50
51	SLIP_STYLE = [
52	('VALIGN',(0,0),(-1,-1),'TOP'),
53	#('FONT', (0,0), (-1,-1), 'Helvetica', 11),
54	]
55
56	CONTENT_STYLE = [
57	('VALIGN',(0,0),(-1,-1),'TOP'),
58	#('FONT', (0,0), (-1,-1), 'Helvetica', 8),
59	#('TEXTCOLOR',(0,0),(-1,0),colors.white),
60	#('BACKGROUND',(0,0),(-1,0),colors.black),
61	('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
62	('BOX', (0,0), (-1,-1), 1, colors.black),
63	]
64
65	FONT_SIZE = 10
66	FONT_COLOR = 'black'
67
68	def trans(text, lang):
69	# shortcut
70	return translate(text, 'waeup.kofa', target_language=lang)
71
72	def formatted_text(text, color=FONT_COLOR, lang='en'):
73	"""Turn `text`, `color` and `size` into an HTML snippet.
74
75	The snippet is suitable for use with reportlab and generating PDFs.
76	Wraps the `text` into a ``<font>`` tag with passed attributes.
77
78	Also non-strings are converted. Raw strings are expected to be
79	utf-8 encoded (usually the case for widgets etc.).
80
81	Finally, a br tag is added if widgets contain div tags
82	which are not supported by reportlab.
83
84	The returned snippet is unicode type.
85	"""
86	if not isinstance(text, unicode):
87	if isinstance(text, basestring):
88	text = text.decode('utf-8')
89	else:
90	text = unicode(text)
91	if text == 'None':
92	text = ''
93	# Very long matriculation numbers need to be wrapped
94	if text.find(' ') == -1 and len(text.split('/')) > 6:
95	text = '/'.join(text.split('/')[:5]) + \
96	'/ ' + '/'.join(text.split('/')[5:])
97	# Mainly for boolean values we need our customized
98	# localisation of the zope domain
99	text = translate(text, 'zope', target_language=lang)
100	text = text.replace('</div>', '<br /></div>')
101	tag1 = u'<font color="%s">' % (color)
102	return tag1 + u'%s</font>' % text
103
104	def generate_student_id():
105	students = grok.getSite()['students']
106	new_id = students.unique_student_id
107	return new_id
108
109	def set_up_widgets(view, ignore_request=False):
110	view.adapters = {}
111	view.widgets = setUpEditWidgets(
112	view.form_fields, view.prefix, view.context, view.request,
113	adapters=view.adapters, for_display=True,
114	ignore_request=ignore_request
115	)
116
117	def render_student_data(studentview, context, omit_fields=(),
118	lang='en', slipname=None, no_passport=False):
119	"""Render student table for an existing frame.
120	"""
121	width, height = A4
122	set_up_widgets(studentview, ignore_request=True)
123	data_left = []
124	data_middle = []
125	style = getSampleStyleSheet()
126	img = getUtility(IExtFileStore).getFileByContext(
127	studentview.context, attr='passport.jpg')
128	if img is None:
129	from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
130	img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
131	doc_img = Image(img.name, width=4cm, height=4cm, kind='bound')
132	data_left.append([doc_img])
133	#data.append([Spacer(1, 12)])
134
135	f_label = trans(_('Name:'), lang)
136	f_label = Paragraph(f_label, ENTRY1_STYLE)
137	f_text = formatted_text(studentview.context.display_fullname)
138	f_text = Paragraph(f_text, ENTRY1_STYLE)
139	data_middle.append([f_label,f_text])
140
141	for widget in studentview.widgets:
142	if 'name' in widget.name:
143	continue
144	f_label = translate(
145	widget.label.strip(), 'waeup.kofa',
146	target_language=lang)
147	f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
148	f_text = formatted_text(widget(), lang=lang)
149	f_text = Paragraph(f_text, ENTRY1_STYLE)
150	data_middle.append([f_label,f_text])
151
152	if getattr(studentview.context, 'certcode', None):
153	if not 'certificate' in omit_fields:
154	f_label = trans(_('Study Course:'), lang)
155	f_label = Paragraph(f_label, ENTRY1_STYLE)
156	f_text = formatted_text(
157	studentview.context['studycourse'].certificate.longtitle)
158	f_text = Paragraph(f_text, ENTRY1_STYLE)
159	data_middle.append([f_label,f_text])
160	if not 'department' in omit_fields:
161	f_label = trans(_('Department:'), lang)
162	f_label = Paragraph(f_label, ENTRY1_STYLE)
163	f_text = formatted_text(
164	studentview.context[
165	'studycourse'].certificate.__parent__.__parent__.longtitle,
166	)
167	f_text = Paragraph(f_text, ENTRY1_STYLE)
168	data_middle.append([f_label,f_text])
169	if not 'faculty' in omit_fields:
170	f_label = trans(_('Faculty:'), lang)
171	f_label = Paragraph(f_label, ENTRY1_STYLE)
172	f_text = formatted_text(
173	studentview.context[
174	'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
175	)
176	f_text = Paragraph(f_text, ENTRY1_STYLE)
177	data_middle.append([f_label,f_text])
178	if not 'current_mode' in omit_fields:
179	studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
180	sm = studymodes_dict[studentview.context.current_mode]
181	f_label = trans(_('Study Mode:'), lang)
182	f_label = Paragraph(f_label, ENTRY1_STYLE)
183	f_text = formatted_text(sm)
184	f_text = Paragraph(f_text, ENTRY1_STYLE)
185	data_middle.append([f_label,f_text])
186	if not 'entry_session' in omit_fields:
187	f_label = trans(_('Entry Session:'), lang)
188	f_label = Paragraph(f_label, ENTRY1_STYLE)
189	entry_session = studentview.context.entry_session
190	try:
191	entry_session = academic_sessions_vocab.getTerm(
192	entry_session).title
193	except LookupError:
194	entry_session = _('void')
195	f_text = formatted_text(entry_session)
196	f_text = Paragraph(f_text, ENTRY1_STYLE)
197	data_middle.append([f_label,f_text])
198	# Requested by Uniben, does not really make sense
199	if not 'current_level' in omit_fields:
200	f_label = trans(_('Current Level:'), lang)
201	f_label = Paragraph(f_label, ENTRY1_STYLE)
202	current_level = studentview.context['studycourse'].current_level
203	studylevelsource = StudyLevelSource().factory
204	current_level = studylevelsource.getTitle(
205	studentview.context, current_level)
206	f_text = formatted_text(current_level)
207	f_text = Paragraph(f_text, ENTRY1_STYLE)
208	data_middle.append([f_label,f_text])
209	if not 'date_of_birth' in omit_fields:
210	f_label = trans(_('Date of Birth:'), lang)
211	f_label = Paragraph(f_label, ENTRY1_STYLE)
212	date_of_birth = studentview.context.date_of_birth
213	tz = getUtility(IKofaUtils).tzinfo
214	date_of_birth = to_timezone(date_of_birth, tz)
215	if date_of_birth is not None:
216	date_of_birth = date_of_birth.strftime("%d/%m/%Y")
217	f_text = formatted_text(date_of_birth)
218	f_text = Paragraph(f_text, ENTRY1_STYLE)
219	data_middle.append([f_label,f_text])
220
221	if no_passport:
222	table = Table(data_middle,style=SLIP_STYLE)
223	table.hAlign = 'LEFT'
224	return table
225
226	# append QR code to the right
227	if slipname:
228	url = studentview.url(context, slipname)
229	data_right = [[get_qrcode(url, width=70.0)]]
230	table_right = Table(data_right,style=SLIP_STYLE)
231	else:
232	table_right = None
233
234	table_left = Table(data_left,style=SLIP_STYLE)
235	table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5cm, 5cm])
236	table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
237	return table
238
239	def render_table_data(tableheader, tabledata, lang='en'):
240	"""Render children table for an existing frame.
241	"""
242	data = []
243	#data.append([Spacer(1, 12)])
244	line = []
245	style = getSampleStyleSheet()
246	for element in tableheader:
247	field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
248	field = Paragraph(field, style["Normal"])
249	line.append(field)
250	data.append(line)
251	for ticket in tabledata:
252	line = []
253	for element in tableheader:
254	field = formatted_text(getattr(ticket,element[1],u' '))
255	field = Paragraph(field, style["Normal"])
256	line.append(field)
257	data.append(line)
258	table = Table(data,colWidths=[
259	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
260	return table
261
262	def render_transcript_data(view, tableheader, levels_data, lang='en'):
263	"""Render children table for an existing frame.
264	"""
265	data = []
266	style = getSampleStyleSheet()
267	format_float = getUtility(IKofaUtils).format_float
268	for level in levels_data:
269	level_obj = level['level']
270	tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
271	headerline = []
272	tabledata = []
273	if 'evel' in view.level_dict.get('ticket.level', str(level_obj.level)):
274	subheader = '%s %s, %s' % (
275	trans(_('Session'), lang),
276	view.session_dict[level_obj.level_session],
277	view.level_dict.get('ticket.level', str(level_obj.level)))
278	else:
279	subheader = '%s %s, %s %s' % (
280	trans(_('Session'), lang),
281	view.session_dict[level_obj.level_session],
282	trans(_('Level'), lang),
283	view.level_dict.get(level_obj.level, str(level_obj.level)))
284	data.append(Paragraph(subheader, HEADING_STYLE))
285	for element in tableheader:
286	field = '<strong>%s</strong>' % formatted_text(element[0])
287	field = Paragraph(field, style["Normal"])
288	headerline.append(field)
289	tabledata.append(headerline)
290	for ticket in tickets:
291	ticketline = []
292	for element in tableheader:
293	field = formatted_text(getattr(ticket,element[1],u' '))
294	field = Paragraph(field, style["Normal"])
295	ticketline.append(field)
296	tabledata.append(ticketline)
297	table = Table(tabledata,colWidths=[
298	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
299	data.append(table)
300	sgpa = format_float(level['sgpa'], 2)
301	sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), sgpa)
302	#sgpa = '%s: %.2f' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
303	data.append(Paragraph(sgpa, style["Normal"]))
304	if getattr(level_obj, 'transcript_remark', None):
305	remark = '%s: %s' % (
306	trans('Transcript Remark', lang),
307	getattr(level_obj, 'transcript_remark'))
308	data.append(Paragraph(remark, style["Normal"]))
309	return data
310
311	def docs_as_flowables(view, lang='en'):
312	"""Create reportlab flowables out of scanned docs.
313	"""
314	# XXX: fix circular import problem
315	from waeup.kofa.browser.fileviewlets import FileManager
316	from waeup.kofa.browser import DEFAULT_IMAGE_PATH
317	style = getSampleStyleSheet()
318	data = []
319
320	# Collect viewlets
321	fm = FileManager(view.context, view.request, view)
322	fm.update()
323	if fm.viewlets:
324	sc_translation = trans(_('Scanned Documents'), lang)
325	data.append(Paragraph(sc_translation, HEADING_STYLE))
326	# Insert list of scanned documents
327	table_data = []
328	for viewlet in fm.viewlets:
329	if viewlet.file_exists:
330	# Show viewlet only if file exists
331	f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
332	img_path = getattr(getUtility(IExtFileStore).getFileByContext(
333	view.context, attr=viewlet.download_name), 'name', None)
334	#f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
335	if img_path is None:
336	pass
337	elif not img_path[-4:] in ('.jpg', '.JPG'):
338	# reportlab requires jpg images, I think.
339	f_text = Paragraph('%s (not displayable)' % (
340	viewlet.title,), ENTRY1_STYLE)
341	else:
342	f_text = Image(img_path, width=2cm, height=1cm, kind='bound')
343	table_data.append([f_label, f_text])
344	if table_data:
345	# safety belt; empty tables lead to problems.
346	data.append(Table(table_data, style=SLIP_STYLE))
347	return data
348
349	class StudentsUtils(grok.GlobalUtility):
350	"""A collection of methods subject to customization.
351	"""
352	grok.implements(IStudentsUtils)
353
354	def getReturningData(self, student):
355	""" Define what happens after school fee payment
356	depending on the student's senate verdict.
357	In the base configuration current level is always increased
358	by 100 no matter which verdict has been assigned.
359	"""
360	new_level = student['studycourse'].current_level + 100
361	new_session = student['studycourse'].current_session + 1
362	return new_session, new_level
363
364	def setReturningData(self, student):
365	""" Define what happens after school fee payment
366	depending on the student's senate verdict.
367	This method folllows the same algorithm as `getReturningData` but
368	it also sets the new values.
369	"""
370	new_session, new_level = self.getReturningData(student)
371	try:
372	student['studycourse'].current_level = new_level
373	except ConstraintNotSatisfied:
374	# Do not change level if level exceeds the
375	# certificate's end_level.
376	pass
377	student['studycourse'].current_session = new_session
378	verdict = student['studycourse'].current_verdict
379	student['studycourse'].current_verdict = '0'
380	student['studycourse'].previous_verdict = verdict
381	return
382
383	def _getSessionConfiguration(self, session):
384	try:
385	return grok.getSite()['configuration'][str(session)]
386	except KeyError:
387	return None
388
389	def _isPaymentDisabled(self, p_session, category, student):
390	academic_session = self._getSessionConfiguration(p_session)
391	if category == 'schoolfee' and \
392	'sf_all' in academic_session.payment_disabled:
393	return True
394	return False
395
396	def samePaymentMade(self, student, category, p_item, p_session):
397	for key in student['payments'].keys():
398	ticket = student['payments'][key]
399	if ticket.p_state == 'paid' and\
400	ticket.p_category == category and \
401	ticket.p_item == p_item and \
402	ticket.p_session == p_session:
403	return True
404	return False
405
406	def setPaymentDetails(self, category, student,
407	previous_session, previous_level, combi=[]):
408	"""Create a payment ticket and set the payment data of a
409	student for the payment category specified.
410	"""
411	p_item = u''
412	amount = 0.0
413	if previous_session:
414	if previous_session < student['studycourse'].entry_session:
415	return _('The previous session must not fall below '
416	'your entry session.'), None
417	if category == 'schoolfee':
418	# School fee is always paid for the following session
419	if previous_session > student['studycourse'].current_session:
420	return _('This is not a previous session.'), None
421	else:
422	if previous_session > student['studycourse'].current_session - 1:
423	return _('This is not a previous session.'), None
424	p_session = previous_session
425	p_level = previous_level
426	p_current = False
427	else:
428	p_session = student['studycourse'].current_session
429	p_level = student['studycourse'].current_level
430	p_current = True
431	academic_session = self._getSessionConfiguration(p_session)
432	if academic_session == None:
433	return _(u'Session configuration object is not available.'), None
434	# Determine fee.
435	if category == 'schoolfee':
436	try:
437	certificate = student['studycourse'].certificate
438	p_item = certificate.code
439	except (AttributeError, TypeError):
440	return _('Study course data are incomplete.'), None
441	if previous_session:
442	# Students can pay for previous sessions in all
443	# workflow states. Fresh students are excluded by the
444	# update method of the PreviousPaymentAddFormPage.
445	if previous_level == 100:
446	amount = getattr(certificate, 'school_fee_1', 0.0)
447	else:
448	amount = getattr(certificate, 'school_fee_2', 0.0)
449	else:
450	if student.state == CLEARED:
451	amount = getattr(certificate, 'school_fee_1', 0.0)
452	elif student.state == RETURNING:
453	# In case of returning school fee payment the
454	# payment session and level contain the values of
455	# the session the student has paid for. Payment
456	# session is always next session.
457	p_session, p_level = self.getReturningData(student)
458	academic_session = self._getSessionConfiguration(p_session)
459	if academic_session == None:
460	return _(
461	u'Session configuration object is not available.'
462	), None
463	amount = getattr(certificate, 'school_fee_2', 0.0)
464	elif student.is_postgrad and student.state == PAID:
465	# Returning postgraduate students also pay for the
466	# next session but their level always remains the
467	# same.
468	p_session += 1
469	academic_session = self._getSessionConfiguration(p_session)
470	if academic_session == None:
471	return _(
472	u'Session configuration object is not available.'
473	), None
474	amount = getattr(certificate, 'school_fee_2', 0.0)
475	elif category == 'clearance':
476	try:
477	p_item = student['studycourse'].certificate.code
478	except (AttributeError, TypeError):
479	return _('Study course data are incomplete.'), None
480	amount = academic_session.clearance_fee
481	elif category == 'bed_allocation':
482	p_item = self.getAccommodationDetails(student)['bt']
483	amount = academic_session.booking_fee
484	elif category == 'hostel_maintenance':
485	amount = 0.0
486	bedticket = student['accommodation'].get(
487	str(student.current_session), None)
488	if bedticket is not None and bedticket.bed is not None:
489	p_item = bedticket.bed_coordinates
490	if bedticket.bed.__parent__.maint_fee > 0:
491	amount = bedticket.bed.__parent__.maint_fee
492	else:
493	# fallback
494	amount = academic_session.maint_fee
495	else:
496	return _(u'No bed allocated.'), None
497	elif category == 'combi' and combi:
498	categories = getUtility(IKofaUtils).COMBI_PAYMENT_CATEGORIES
499	for cat in combi:
500	fee_name = cat + '_fee'
501	cat_amount = getattr(academic_session, fee_name, 0.0)
502	if not cat_amount:
503	return _('%s undefined.' % categories[cat]), None
504	amount += cat_amount
505	p_item += u'%s + ' % categories[cat]
506	p_item = p_item.strip(' + ')
507	else:
508	fee_name = category + '_fee'
509	amount = getattr(academic_session, fee_name, 0.0)
510	if amount in (0.0, None):
511	return _('Amount could not be determined.'), None
512	if self.samePaymentMade(student, category, p_item, p_session):
513	return _('This type of payment has already been made.'), None
514	if self._isPaymentDisabled(p_session, category, student):
515	return _('This category of payments has been disabled.'), None
516	payment = createObject(u'waeup.StudentOnlinePayment')
517	timestamp = ("%d" % int(time()*10000))[1:]
518	payment.p_id = "p%s" % timestamp
519	payment.p_category = category
520	payment.p_item = p_item
521	payment.p_session = p_session
522	payment.p_level = p_level
523	payment.p_current = p_current
524	payment.amount_auth = amount
525	payment.p_combi = combi
526	return None, payment
527
528	def setBalanceDetails(self, category, student,
529	balance_session, balance_level, balance_amount):
530	"""Create a balance payment ticket and set the payment data
531	as selected by the student.
532	"""
533	p_item = u'Balance'
534	p_session = balance_session
535	p_level = balance_level
536	p_current = False
537	amount = balance_amount
538	academic_session = self._getSessionConfiguration(p_session)
539	if academic_session == None:
540	return _(u'Session configuration object is not available.'), None
541	if amount in (0.0, None) or amount < 0:
542	return _('Amount must be greater than 0.'), None
543	payment = createObject(u'waeup.StudentOnlinePayment')
544	timestamp = ("%d" % int(time()*10000))[1:]
545	payment.p_id = "p%s" % timestamp
546	payment.p_category = category
547	payment.p_item = p_item
548	payment.p_session = p_session
549	payment.p_level = p_level
550	payment.p_current = p_current
551	payment.amount_auth = amount
552	return None, payment
553
554	def increaseMatricInteger(self, student):
555	"""Increase counter for matric numbers.
556	This counter can be a centrally stored attribute or an attribute of
557	faculties, departments or certificates. In the base package the counter
558	is as an attribute of the site configuration container.
559	"""
560	grok.getSite()['configuration'].next_matric_integer += 1
561	return
562
563	def constructMatricNumber(self, student):
564	"""Fetch the matric number counter which fits the student and
565	construct the new matric number of the student.
566	In the base package the counter is returned which is as an attribute
567	of the site configuration container.
568	"""
569	next_integer = grok.getSite()['configuration'].next_matric_integer
570	if next_integer == 0:
571	return _('Matriculation number cannot be set.'), None
572	return None, unicode(next_integer)
573
574	def setMatricNumber(self, student):
575	"""Set matriculation number of student. If the student's matric number
576	is unset a new matric number is
577	constructed according to the matriculation number construction rules
578	defined in the `constructMatricNumber` method. The new matric number is
579	set, the students catalog updated. The corresponding matric number
580	counter is increased by one.
581
582	This method is tested but not used in the base package. It can
583	be used in custom packages by adding respective views
584	and by customizing `increaseMatricInteger` and `constructMatricNumber`
585	according to the university's matriculation number construction rules.
586
587	The method can be disabled by setting the counter to zero.
588	"""
589	if student.matric_number is not None:
590	return _('Matriculation number already set.'), None
591	if student.certcode is None:
592	return _('No certificate assigned.'), None
593	error, matric_number = self.constructMatricNumber(student)
594	if error:
595	return error, None
596	try:
597	student.matric_number = matric_number
598	except MatNumNotInSource:
599	return _('Matriculation number %s exists.' % matric_number), None
600	notify(grok.ObjectModifiedEvent(student))
601	self.increaseMatricInteger(student)
602	return None, matric_number
603
604	def getAccommodationDetails(self, student):
605	"""Determine the accommodation data of a student.
606	"""
607	d = {}
608	d['error'] = u''
609	hostels = grok.getSite()['hostels']
610	d['booking_session'] = hostels.accommodation_session
611	d['allowed_states'] = hostels.accommodation_states
612	d['startdate'] = hostels.startdate
613	d['enddate'] = hostels.enddate
614	d['expired'] = hostels.expired
615	# Determine bed type
616	studycourse = student['studycourse']
617	certificate = getattr(studycourse,'certificate',None)
618	entry_session = studycourse.entry_session
619	current_level = studycourse.current_level
620	if None in (entry_session, current_level, certificate):
621	return d
622	end_level = certificate.end_level
623	if current_level == 10:
624	bt = 'pr'
625	elif entry_session == grok.getSite()['hostels'].accommodation_session:
626	bt = 'fr'
627	elif current_level >= end_level:
628	bt = 'fi'
629	else:
630	bt = 're'
631	if student.sex == 'f':
632	sex = 'female'
633	else:
634	sex = 'male'
635	special_handling = 'regular'
636	d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
637	return d
638
639	def checkAccommodationRequirements(self, student, acc_details):
640	if acc_details.get('expired', False):
641	startdate = acc_details.get('startdate')
642	enddate = acc_details.get('enddate')
643	if startdate and enddate:
644	tz = getUtility(IKofaUtils).tzinfo
645	startdate = to_timezone(
646	startdate, tz).strftime("%d/%m/%Y %H:%M:%S")
647	enddate = to_timezone(
648	enddate, tz).strftime("%d/%m/%Y %H:%M:%S")
649	return _("Outside booking period: ${a} - ${b}",
650	mapping = {'a': startdate, 'b': enddate})
651	else:
652	return _("Outside booking period.")
653	if not acc_details.get('bt'):
654	return _("Your data are incomplete.")
655	if not student.state in acc_details['allowed_states']:
656	return _("You are in the wrong registration state.")
657	if student['studycourse'].current_session != acc_details[
658	'booking_session']:
659	return _('Your current session does not '
660	'match accommodation session.')
661	bsession = str(acc_details['booking_session'])
662	if bsession in student['accommodation'].keys() \
663	and not 'booking expired' in \
664	student['accommodation'][bsession].bed_coordinates:
665	return _('You already booked a bed space in '
666	'current accommodation session.')
667	return
668
669	def selectBed(self, available_beds):
670	"""Select a bed from a filtered list of available beds.
671	In the base configuration beds are sorted by the sort id
672	of the hostel and the bed number. The first bed found in
673	this sorted list is taken.
674	"""
675	sorted_beds = sorted(available_beds,
676	key=lambda bed: 1000 * bed.__parent__.sort_id + bed.bed_number)
677	return sorted_beds[0]
678
679	def GPABoundaries(self, faccode=None, depcode=None, certcode=None):
680	return ((1, 'Fail'),
681	(1.5, 'Pass'),
682	(2.4, '3rd Class'),
683	(3.5, '2nd Class Lower'),
684	(4.5, '2nd Class Upper'),
685	(5, '1st Class'))
686
687	def getClassFromCGPA(self, gpa, student):
688	"""Determine the class of degree. In some custom packages
689	this class depends on e.g. the entry session of the student. In the
690	base package, it does not.
691	"""
692	if gpa < self.GPABoundaries()[0][0]:
693	return 0, self.GPABoundaries()[0][1]
694	if gpa < self.GPABoundaries()[1][0]:
695	return 1, self.GPABoundaries()[1][1]
696	if gpa < self.GPABoundaries()[2][0]:
697	return 2, self.GPABoundaries()[2][1]
698	if gpa < self.GPABoundaries()[3][0]:
699	return 3, self.GPABoundaries()[3][1]
700	if gpa < self.GPABoundaries()[4][0]:
701	return 4, self.GPABoundaries()[4][1]
702	if gpa <= self.GPABoundaries()[5][0]:
703	return 5, self.GPABoundaries()[5][1]
704	return
705
706	def getDegreeClassNumber(self, level_obj):
707	"""Get degree class number (used for SessionResultsPresentation
708	reports).
709	"""
710	if level_obj.gpa_params[1] == 0:
711	# No credits weighted
712	return 6
713	return self.getClassFromCGPA(
714	level_obj.cumulative_params[0], level_obj.student)[0]
715
716	def _saveTranscriptPDF(self, student, transcript):
717	"""Create a transcript PDF file and store it in student folder.
718	"""
719	file_store = getUtility(IExtFileStore)
720	file_id = IFileStoreNameChooser(student).chooseName(
721	attr="final_transcript.pdf")
722	file_store.createFile(file_id, StringIO(transcript))
723	return
724
725	def warnCreditsOOR(self, studylevel, course=None):
726	"""Return message if credits are out of range. In the base
727	package only maximum credits is set.
728	"""
729	if course and studylevel.total_credits + course.credits > 50:
730	return _('Maximum credits exceeded.')
731	elif studylevel.total_credits > 50:
732	return _('Maximum credits exceeded.')
733	return
734
735	def warnCourseAlreadyPassed(self, studylevel, course):
736	"""Return message if course has already been passed at
737	previous levels.
738	"""
739	for slevel in studylevel.__parent__.values():
740	for cticket in slevel.values():
741	if cticket.code == course.code \
742	and cticket.total_score >= cticket.passmark:
743	return _('Course has already been passed at previous level.')
744	return False
745
746	def getBedCoordinates(self, bedticket):
747	"""Return descriptive bed coordinates.
748	This method can be used to customize the `display_coordinates`
749	property method in order to display a
750	customary description of the bed space.
751	"""
752	return bedticket.bed_coordinates
753
754	def clearance_disabled_message(self, student):
755	"""Render message if clearance is disabled.
756	"""
757	try:
758	session_config = grok.getSite()[
759	'configuration'][str(student.current_session)]
760	except KeyError:
761	return _('Session configuration object is not available.')
762	if not session_config.clearance_enabled:
763	return _('Clearance is disabled for this session.')
764	return None
765
766	def getPDFCreator(self, context):
767	"""Get a pdf creator suitable for `context`.
768	The default implementation always returns the default creator.
769	"""
770	return getUtility(IPDFCreator)
771
772	def renderPDF(self, view, filename='slip.pdf', student=None,
773	studentview=None,
774	tableheader=[], tabledata=[],
775	note=None, signatures=None, sigs_in_footer=(),
776	show_scans=True, topMargin=1.5,
777	omit_fields=()):
778	"""Render pdf slips for various pages (also some pages
779	in the applicants module).
780	"""
781	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
782	# XXX: tell what the different parameters mean
783	style = getSampleStyleSheet()
784	creator = self.getPDFCreator(student)
785	data = []
786	doc_title = view.label
787	author = '%s (%s)' % (view.request.principal.title,
788	view.request.principal.id)
789	footer_text = view.label.split('\n')
790	if len(footer_text) > 1:
791	# We can add a department in first line, second line is used
792	footer_text = footer_text[1]
793	else:
794	# Only the first line is used for the footer
795	footer_text = footer_text[0]
796	if getattr(student, 'student_id', None) is not None:
797	footer_text = "%s - %s - " % (student.student_id, footer_text)
798
799	# Insert student data table
800	if student is not None:
801	if view.form_fields:
802	bd_translation = trans(_('Base Data'), portal_language)
803	data.append(Paragraph(bd_translation, HEADING_STYLE))
804	data.append(render_student_data(
805	studentview, view.context, omit_fields, lang=portal_language,
806	slipname=filename))
807
808	# Insert widgets
809	if view.form_fields:
810	data.append(Paragraph(view.title, HEADING_STYLE))
811	separators = getattr(self, 'SEPARATORS_DICT', {})
812	table = creator.getWidgetsTable(
813	view.form_fields, view.context, None, lang=portal_language,
814	separators=separators)
815	data.append(table)
816
817	# Insert scanned docs
818	if show_scans:
819	data.extend(docs_as_flowables(view, portal_language))
820
821	# Insert history
822	if filename == 'clearance_slip.pdf':
823	hist_translation = trans(_('Workflow History'), portal_language)
824	data.append(Paragraph(hist_translation, HEADING_STYLE))
825	data.extend(creator.fromStringList(student.history.messages))
826
827	# Insert content tables (optionally on second page)
828	if hasattr(view, 'tabletitle'):
829	for i in range(len(view.tabletitle)):
830	if tabledata[i] and tableheader[i]:
831	tabletitle = view.tabletitle[i]
832	if tabletitle.startswith('_PB_'):
833	data.append(PageBreak())
834	tabletitle = view.tabletitle[i].strip('_PB_')
835	#data.append(Spacer(1, 20))
836	data.append(Paragraph(tabletitle, HEADING_STYLE))
837	data.append(Spacer(1, 8))
838	contenttable = render_table_data(tableheader[i],tabledata[i])
839	data.append(contenttable)
840
841	# Insert signatures
842	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
843	# do not have a test for the following lines.
844	if signatures and not sigs_in_footer:
845	data.append(Spacer(1, 20))
846	# Render one signature table per signature to
847	# get date and signature in line.
848	for signature in signatures:
849	signaturetables = get_signature_tables(signature)
850	data.append(signaturetables[0])
851
852	view.response.setHeader(
853	'Content-Type', 'application/pdf')
854	try:
855	pdf_stream = creator.create_pdf(
856	data, None, doc_title, author=author, footer=footer_text,
857	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
858	except IOError:
859	view.flash('Error in image file.')
860	return view.redirect(view.url(view.context))
861	except LayoutError, err:
862	view.flash(
863	'PDF file could not be created. Reportlab error message: %s'
864	% escape(err.message),
865	type="danger")
866	return view.redirect(view.url(view.context))
867	return pdf_stream
868
869	def _admissionText(self, student, portal_language):
870	inst_name = grok.getSite()['configuration'].name
871	text = trans(_(
872	'This is to inform you that you have been provisionally'
873	' admitted into ${a} as follows:', mapping = {'a': inst_name}),
874	portal_language)
875	return text
876
877	def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
878	pre_text=None, post_text=None,
879	topMargin = 1.5,
880	letterhead_path=None):
881	"""Render pdf admission letter.
882	"""
883	if student is None:
884	return
885	style = getSampleStyleSheet()
886	if letterhead_path:
887	creator = getUtility(IPDFCreator, name='letter')
888	else:
889	creator = self.getPDFCreator(student)
890	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
891	data = []
892	doc_title = view.label
893	author = '%s (%s)' % (view.request.principal.title,
894	view.request.principal.id)
895	footer_text = view.label.split('\n')
896	if len(footer_text) > 1:
897	# We can add a department in first line
898	footer_text = footer_text[1]
899	else:
900	# Only the first line is used for the footer
901	footer_text = footer_text[0]
902	if getattr(student, 'student_id', None) is not None:
903	footer_text = "%s - %s - " % (student.student_id, footer_text)
904
905	# Text before student data
906	if pre_text is None:
907	html = format_html(self._admissionText(student, portal_language))
908	else:
909	html = format_html(pre_text)
910	if html:
911	data.append(Paragraph(html, NOTE_STYLE))
912	data.append(Spacer(1, 20))
913
914	# Student data
915	data.append(render_student_data(view, student,
916	omit_fields, lang=portal_language,
917	slipname='admission_slip.pdf'))
918
919	# Text after student data
920	data.append(Spacer(1, 20))
921	if post_text is None:
922	datelist = student.history.messages[0].split()[0].split('-')
923	creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
924	post_text = trans(_(
925	'Your Kofa student record was created on ${a}.',
926	mapping = {'a': creation_date}),
927	portal_language)
928	#html = format_html(post_text)
929	#data.append(Paragraph(html, NOTE_STYLE))
930
931	# Create pdf stream
932	view.response.setHeader(
933	'Content-Type', 'application/pdf')
934	pdf_stream = creator.create_pdf(
935	data, None, doc_title, author=author, footer=footer_text,
936	note=post_text, topMargin=topMargin,
937	letterhead_path=letterhead_path)
938	return pdf_stream
939
940	def renderPDFTranscript(self, view, filename='transcript.pdf',
941	student=None,
942	studentview=None,
943	note=None,
944	signatures=(),
945	sigs_in_footer=(),
946	digital_sigs=(),
947	show_scans=True, topMargin=1.5,
948	omit_fields=(),
949	tableheader=None,
950	no_passport=False,
951	save_file=False):
952	"""Render pdf slip of a transcripts.
953	"""
954	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
955	# XXX: tell what the different parameters mean
956	style = getSampleStyleSheet()
957	creator = self.getPDFCreator(student)
958	data = []
959	doc_title = view.label
960	author = '%s (%s)' % (view.request.principal.title,
961	view.request.principal.id)
962	footer_text = view.label.split('\n')
963	if len(footer_text) > 2:
964	# We can add a department in first line
965	footer_text = footer_text[1]
966	else:
967	# Only the first line is used for the footer
968	footer_text = footer_text[0]
969	if getattr(student, 'student_id', None) is not None:
970	footer_text = "%s - %s - " % (student.student_id, footer_text)
971
972	# Insert student data table
973	if student is not None:
974	#bd_translation = trans(_('Base Data'), portal_language)
975	#data.append(Paragraph(bd_translation, HEADING_STYLE))
976	data.append(render_student_data(
977	studentview, view.context,
978	omit_fields, lang=portal_language,
979	slipname=filename,
980	no_passport=no_passport))
981
982	transcript_data = view.context.getTranscriptData()
983	levels_data = transcript_data[0]
984
985	contextdata = []
986	f_label = trans(_('Course of Study:'), portal_language)
987	f_label = Paragraph(f_label, ENTRY1_STYLE)
988	f_text = formatted_text(view.context.certificate.longtitle)
989	f_text = Paragraph(f_text, ENTRY1_STYLE)
990	contextdata.append([f_label,f_text])
991
992	f_label = trans(_('Faculty:'), portal_language)
993	f_label = Paragraph(f_label, ENTRY1_STYLE)
994	f_text = formatted_text(
995	view.context.certificate.__parent__.__parent__.__parent__.longtitle)
996	f_text = Paragraph(f_text, ENTRY1_STYLE)
997	contextdata.append([f_label,f_text])
998
999	f_label = trans(_('Department:'), portal_language)
1000	f_label = Paragraph(f_label, ENTRY1_STYLE)
1001	f_text = formatted_text(
1002	view.context.certificate.__parent__.__parent__.longtitle)
1003	f_text = Paragraph(f_text, ENTRY1_STYLE)
1004	contextdata.append([f_label,f_text])
1005
1006	f_label = trans(_('Entry Session:'), portal_language)
1007	f_label = Paragraph(f_label, ENTRY1_STYLE)
1008	f_text = formatted_text(
1009	view.session_dict.get(view.context.entry_session))
1010	f_text = Paragraph(f_text, ENTRY1_STYLE)
1011	contextdata.append([f_label,f_text])
1012
1013	f_label = trans(_('Entry Mode:'), portal_language)
1014	f_label = Paragraph(f_label, ENTRY1_STYLE)
1015	f_text = formatted_text(view.studymode_dict.get(
1016	view.context.entry_mode))
1017	f_text = Paragraph(f_text, ENTRY1_STYLE)
1018	contextdata.append([f_label,f_text])
1019
1020	f_label = trans(_('Cumulative GPA:'), portal_language)
1021	f_label = Paragraph(f_label, ENTRY1_STYLE)
1022	format_float = getUtility(IKofaUtils).format_float
1023	cgpa = format_float(transcript_data[1], 3)
1024	if student.state == GRADUATED:
1025	f_text = formatted_text('%s (%s)' % (
1026	cgpa, self.getClassFromCGPA(transcript_data[1], student)[1]))
1027	else:
1028	f_text = formatted_text('%s' % cgpa)
1029	f_text = Paragraph(f_text, ENTRY1_STYLE)
1030	contextdata.append([f_label,f_text])
1031
1032	contexttable = Table(contextdata,style=SLIP_STYLE)
1033	data.append(contexttable)
1034
1035	transcripttables = render_transcript_data(
1036	view, tableheader, levels_data, lang=portal_language)
1037	data.extend(transcripttables)
1038
1039	# Insert signatures
1040	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
1041	# do not have a test for the following lines.
1042	if signatures and not sigs_in_footer:
1043	data.append(Spacer(1, 20))
1044	# Render one signature table per signature to
1045	# get date and signature in line.
1046	for signature in signatures:
1047	signaturetables = get_signature_tables(signature)
1048	data.append(signaturetables[0])
1049
1050	# Insert digital signatures
1051	if digital_sigs:
1052	data.append(Spacer(1, 20))
1053	sigs = digital_sigs.split('\n')
1054	for sig in sigs:
1055	data.append(Paragraph(sig, NOTE_STYLE))
1056
1057	view.response.setHeader(
1058	'Content-Type', 'application/pdf')
1059	try:
1060	pdf_stream = creator.create_pdf(
1061	data, None, doc_title, author=author, footer=footer_text,
1062	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
1063	except IOError:
1064	view.flash(_('Error in image file.'))
1065	return view.redirect(view.url(view.context))
1066	if save_file:
1067	self._saveTranscriptPDF(student, pdf_stream)
1068	return
1069	return pdf_stream
1070
1071	def renderPDFCourseticketsOverview(
1072	self, view, name, session, data, lecturers, orientation,
1073	title_length, note):
1074	"""Render pdf slip of course tickets for a lecturer.
1075	"""
1076	filename = '%s_%s_%s_%s.pdf' % (
1077	name, view.context.code, session, view.request.principal.id)
1078	try:
1079	session = academic_sessions_vocab.getTerm(session).title
1080	except LookupError:
1081	session = _('void')
1082	creator = getUtility(IPDFCreator, name=orientation)
1083	style = getSampleStyleSheet()
1084	pdf_data = []
1085	pdf_data += [Paragraph(
1086	translate(_('<b>Lecturer(s): ${a}</b>',
1087	mapping = {'a':lecturers})), style["Normal"]),]
1088	pdf_data += [Paragraph(
1089	translate(_('<b>Credits: ${a}</b>',
1090	mapping = {'a':view.context.credits})), style["Normal"]),]
1091	# Not used in base package.
1092	if data[1]:
1093	pdf_data += [Paragraph(
1094	translate(_('<b>${a}</b>',
1095	mapping = {'a':data[1][0]})), style["Normal"]),]
1096	pdf_data += [Paragraph(
1097	translate(_('<b>${a}</b>',
1098	mapping = {'a':data[1][1]})), style["Normal"]),]
1099	pdf_data += [Paragraph(
1100	translate(_('<b>Total Students: ${a}</b>',
1101	mapping = {'a':data[1][2]})), style["Normal"]),]
1102	pdf_data += [Paragraph(
1103	translate(_('<b>Total Pass: ${a} (${b}%)</b>',
1104	mapping = {'a':data[1][3],'b':data[1][4]})), style["Normal"]),]
1105	pdf_data += [Paragraph(
1106	translate(_('<b>Total Fail: ${a} (${b}%)</b>',
1107	mapping = {'a':data[1][5],'b':data[1][6]})), style["Normal"]),]
1108	grade_stats = []
1109	for item in sorted(data[1][7].items()):
1110	grade_stats.append(('%s=%s' % (item[0], item[1])))
1111	grade_stats_string = ', '.join(grade_stats)
1112	pdf_data += [Paragraph(
1113	translate(_('<b>${a}</b>',
1114	mapping = {'a':grade_stats_string})), style["Normal"]),]
1115	pdf_data.append(Spacer(1, 20))
1116	colWidths = [None] * len(data[0][0])
1117	pdf_data += [Table(data[0], colWidths=colWidths, style=CONTENT_STYLE,
1118	repeatRows=1)]
1119	# Process title if too long
1120	title = " ".join(view.context.title.split())
1121	ct = textwrap.fill(title, title_length)
1122	ft = "" # title
1123	#if len(textwrap.wrap(title, title_length)) > 1:
1124	# ft = textwrap.wrap(title, title_length)[0] + ' ...'
1125	doc_title = translate(_('${a} (${b})\nAcademic Session ${d}',
1126	mapping = {'a':ct,
1127	'b':view.context.code,
1128	'd':session}))
1129	if name == 'attendance':
1130	doc_title += '\n' + translate(_('Attendance Sheet'))
1131	if name == 'coursetickets':
1132	doc_title += '\n' + translate(_('Course Tickets Overview'))
1133	#footer_title = translate(_('${a} (${b}) - ${d}',
1134	# mapping = {'a':ft,
1135	# 'b':view.context.code,
1136	# 'd':session}))
1137	footer_title = translate(_('${b} - ${d}',
1138	mapping = {'b':view.context.code,
1139	'd':session}))
1140	author = '%s (%s)' % (view.request.principal.title,
1141	view.request.principal.id)
1142	view.response.setHeader(
1143	'Content-Type', 'application/pdf')
1144	view.response.setHeader(
1145	'Content-Disposition:', 'attachment; filename="%s' % filename)
1146	pdf_stream = creator.create_pdf(
1147	pdf_data, None, doc_title, author, footer_title + ' -', note
1148	)
1149	return pdf_stream
1150
1151	def updateCourseTickets(self, course):
1152	"""Udate course tickets if course attributes were changed.
1153	"""
1154	current_academic_session = grok.getSite()[
1155	'configuration'].current_academic_session
1156	if not current_academic_session:
1157	return
1158	cat = queryUtility(ICatalog, name='coursetickets_catalog')
1159	coursetickets = cat.searchResults(
1160	code=(course.code, course.code),
1161	session=(current_academic_session,current_academic_session))
1162	number = 0
1163	ob_class = self.__implemented__.__name__.replace('waeup.kofa.', '')
1164	for ticket in coursetickets:
1165	if ticket.credits == course.credits:
1166	continue
1167	if ticket.student.current_session != current_academic_session:
1168	continue
1169	if ticket.student.state not in (PAID,):
1170	continue
1171	number += 1
1172	ticket.student.__parent__.logger.info(
1173	'%s - %s %s/%s credits updated (%s->%s)' % (
1174	ob_class, ticket.student.student_id,
1175	ticket.level, ticket.code, course.credits,
1176	ticket.credits))
1177	ticket.credits = course.credits
1178	return number
1179
1180	#: A dictionary which maps widget names to headlines. The headline
1181	#: is rendered in forms and on pdf slips above the respective
1182	#: display or input widget. There are no separating headlines
1183	#: in the base package.
1184	SEPARATORS_DICT = {}
1185
1186	#: A tuple containing names of file upload viewlets which are not shown
1187	#: on the `StudentClearanceManageFormPage`. Nothing is being skipped
1188	#: in the base package. This attribute makes only sense, if intermediate
1189	#: custom packages are being used, like we do for all Nigerian portals.
1190	SKIP_UPLOAD_VIEWLETS = ()
1191
1192	#: A tuple containing the names of registration states in which changing of
1193	#: passport pictures is allowed.
1194	PORTRAIT_CHANGE_STATES = (ADMITTED,)
1195
1196	#: A tuple containing all exporter names referring to students or
1197	#: subobjects thereof.
1198	STUDENT_EXPORTER_NAMES = (
1199	'students',
1200	'studentstudycourses',
1201	'studentstudylevels',
1202	'coursetickets',
1203	'studentpayments',
1204	'bedtickets',
1205	'trimmed',
1206	'outstandingcourses',
1207	'unpaidpayments',
1208	'sfpaymentsoverview',
1209	'sessionpaymentsoverview',
1210	'studylevelsoverview',
1211	'combocard',
1212	'bursary',
1213	'accommodationpayments',
1214	'transcriptdata',
1215	'trimmedpayments',
1216	)
1217
1218	#: A tuple containing all exporter names needed for backing
1219	#: up student data
1220	STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
1221	'studentstudylevels', 'coursetickets',
1222	'studentpayments', 'bedtickets')
1223
1224	# Maximum size of upload files in kB
1225	MAX_KB = 250
1226
1227	#: A prefix used when generating new student ids. Each student id will
1228	#: start with this string. The default is 'K' for Kofa.
1229	STUDENT_ID_PREFIX = u'K'

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