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source: main/waeup.kofa/trunk/src/waeup/kofa/students/utils.py @ 15185

Last change on this file since 15185 was 15163, checked in by Henrik Bettermann, 6 years ago
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1	## $Id: utils.py 15163 2018-09-23 05:05:04Z 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	from time import time
22	from cStringIO import StringIO
23	from reportlab.lib import colors
24	from reportlab.lib.units import cm
25	from reportlab.lib.pagesizes import A4
26	from reportlab.lib.styles import getSampleStyleSheet
27	from reportlab.platypus import Paragraph, Image, Table, Spacer
28	from reportlab.platypus.doctemplate import LayoutError
29	from zope.event import notify
30	from zope.schema.interfaces import ConstraintNotSatisfied
31	from zope.component import getUtility, createObject
32	from zope.formlib.form import setUpEditWidgets
33	from zope.i18n import translate
34	from waeup.kofa.interfaces import (
35	IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED,
36	academic_sessions_vocab, IFileStoreNameChooser)
37	from waeup.kofa.interfaces import MessageFactory as _
38	from waeup.kofa.students.interfaces import IStudentsUtils
39	from waeup.kofa.students.workflow import ADMITTED
40	from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
41	from waeup.kofa.browser.pdf import (
42	ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
43	get_signature_tables, get_qrcode)
44	from waeup.kofa.browser.interfaces import IPDFCreator
45	from waeup.kofa.utils.helpers import to_timezone
46
47	SLIP_STYLE = [
48	('VALIGN',(0,0),(-1,-1),'TOP'),
49	#('FONT', (0,0), (-1,-1), 'Helvetica', 11),
50	]
51
52	CONTENT_STYLE = [
53	('VALIGN',(0,0),(-1,-1),'TOP'),
54	#('FONT', (0,0), (-1,-1), 'Helvetica', 8),
55	#('TEXTCOLOR',(0,0),(-1,0),colors.white),
56	#('BACKGROUND',(0,0),(-1,0),colors.black),
57	('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
58	('BOX', (0,0), (-1,-1), 1, colors.black),
59	]
60
61	FONT_SIZE = 10
62	FONT_COLOR = 'black'
63
64	def trans(text, lang):
65	# shortcut
66	return translate(text, 'waeup.kofa', target_language=lang)
67
68	def formatted_text(text, color=FONT_COLOR, lang='en'):
69	"""Turn `text`, `color` and `size` into an HTML snippet.
70
71	The snippet is suitable for use with reportlab and generating PDFs.
72	Wraps the `text` into a ``<font>`` tag with passed attributes.
73
74	Also non-strings are converted. Raw strings are expected to be
75	utf-8 encoded (usually the case for widgets etc.).
76
77	Finally, a br tag is added if widgets contain div tags
78	which are not supported by reportlab.
79
80	The returned snippet is unicode type.
81	"""
82	if not isinstance(text, unicode):
83	if isinstance(text, basestring):
84	text = text.decode('utf-8')
85	else:
86	text = unicode(text)
87	if text == 'None':
88	text = ''
89	# Very long matriculation numbers need to be wrapped
90	if text.find(' ') == -1 and len(text.split('/')) > 6:
91	text = '/'.join(text.split('/')[:5]) + \
92	'/ ' + '/'.join(text.split('/')[5:])
93	# Mainly for boolean values we need our customized
94	# localisation of the zope domain
95	text = translate(text, 'zope', target_language=lang)
96	text = text.replace('</div>', '<br /></div>')
97	tag1 = u'<font color="%s">' % (color)
98	return tag1 + u'%s</font>' % text
99
100	def generate_student_id():
101	students = grok.getSite()['students']
102	new_id = students.unique_student_id
103	return new_id
104
105	def set_up_widgets(view, ignore_request=False):
106	view.adapters = {}
107	view.widgets = setUpEditWidgets(
108	view.form_fields, view.prefix, view.context, view.request,
109	adapters=view.adapters, for_display=True,
110	ignore_request=ignore_request
111	)
112
113	def render_student_data(studentview, context, omit_fields=(),
114	lang='en', slipname=None, no_passport=False):
115	"""Render student table for an existing frame.
116	"""
117	width, height = A4
118	set_up_widgets(studentview, ignore_request=True)
119	data_left = []
120	data_middle = []
121	style = getSampleStyleSheet()
122	img = getUtility(IExtFileStore).getFileByContext(
123	studentview.context, attr='passport.jpg')
124	if img is None:
125	from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
126	img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
127	doc_img = Image(img.name, width=4cm, height=4cm, kind='bound')
128	data_left.append([doc_img])
129	#data.append([Spacer(1, 12)])
130
131	f_label = trans(_('Name:'), lang)
132	f_label = Paragraph(f_label, ENTRY1_STYLE)
133	f_text = formatted_text(studentview.context.display_fullname)
134	f_text = Paragraph(f_text, ENTRY1_STYLE)
135	data_middle.append([f_label,f_text])
136
137	for widget in studentview.widgets:
138	if 'name' in widget.name:
139	continue
140	f_label = translate(
141	widget.label.strip(), 'waeup.kofa',
142	target_language=lang)
143	f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
144	f_text = formatted_text(widget(), lang=lang)
145	f_text = Paragraph(f_text, ENTRY1_STYLE)
146	data_middle.append([f_label,f_text])
147
148	if getattr(studentview.context, 'certcode', None):
149	if not 'certificate' in omit_fields:
150	f_label = trans(_('Study Course:'), lang)
151	f_label = Paragraph(f_label, ENTRY1_STYLE)
152	f_text = formatted_text(
153	studentview.context['studycourse'].certificate.longtitle)
154	f_text = Paragraph(f_text, ENTRY1_STYLE)
155	data_middle.append([f_label,f_text])
156	if not 'department' in omit_fields:
157	f_label = trans(_('Department:'), lang)
158	f_label = Paragraph(f_label, ENTRY1_STYLE)
159	f_text = formatted_text(
160	studentview.context[
161	'studycourse'].certificate.__parent__.__parent__.longtitle,
162	)
163	f_text = Paragraph(f_text, ENTRY1_STYLE)
164	data_middle.append([f_label,f_text])
165	if not 'faculty' in omit_fields:
166	f_label = trans(_('Faculty:'), lang)
167	f_label = Paragraph(f_label, ENTRY1_STYLE)
168	f_text = formatted_text(
169	studentview.context[
170	'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
171	)
172	f_text = Paragraph(f_text, ENTRY1_STYLE)
173	data_middle.append([f_label,f_text])
174	if not 'current_mode' in omit_fields:
175	studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
176	sm = studymodes_dict[studentview.context.current_mode]
177	f_label = trans(_('Study Mode:'), lang)
178	f_label = Paragraph(f_label, ENTRY1_STYLE)
179	f_text = formatted_text(sm)
180	f_text = Paragraph(f_text, ENTRY1_STYLE)
181	data_middle.append([f_label,f_text])
182	if not 'entry_session' in omit_fields:
183	f_label = trans(_('Entry Session:'), lang)
184	f_label = Paragraph(f_label, ENTRY1_STYLE)
185	entry_session = studentview.context.entry_session
186	entry_session = academic_sessions_vocab.getTerm(entry_session).title
187	f_text = formatted_text(entry_session)
188	f_text = Paragraph(f_text, ENTRY1_STYLE)
189	data_middle.append([f_label,f_text])
190	# Requested by Uniben, does not really make sense
191	if not 'current_level' in omit_fields:
192	f_label = trans(_('Current Level:'), lang)
193	f_label = Paragraph(f_label, ENTRY1_STYLE)
194	current_level = studentview.context['studycourse'].current_level
195	studylevelsource = StudyLevelSource().factory
196	current_level = studylevelsource.getTitle(
197	studentview.context, current_level)
198	f_text = formatted_text(current_level)
199	f_text = Paragraph(f_text, ENTRY1_STYLE)
200	data_middle.append([f_label,f_text])
201	if not 'date_of_birth' in omit_fields:
202	f_label = trans(_('Date of Birth:'), lang)
203	f_label = Paragraph(f_label, ENTRY1_STYLE)
204	date_of_birth = studentview.context.date_of_birth
205	tz = getUtility(IKofaUtils).tzinfo
206	date_of_birth = to_timezone(date_of_birth, tz)
207	if date_of_birth is not None:
208	date_of_birth = date_of_birth.strftime("%d/%m/%Y")
209	f_text = formatted_text(date_of_birth)
210	f_text = Paragraph(f_text, ENTRY1_STYLE)
211	data_middle.append([f_label,f_text])
212
213	if no_passport:
214	table = Table(data_middle,style=SLIP_STYLE)
215	table.hAlign = 'LEFT'
216	return table
217
218	# append QR code to the right
219	if slipname:
220	url = studentview.url(context, slipname)
221	data_right = [[get_qrcode(url, width=70.0)]]
222	table_right = Table(data_right,style=SLIP_STYLE)
223	else:
224	table_right = None
225
226	table_left = Table(data_left,style=SLIP_STYLE)
227	table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5cm, 5cm])
228	table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
229	return table
230
231	def render_table_data(tableheader, tabledata, lang='en'):
232	"""Render children table for an existing frame.
233	"""
234	data = []
235	#data.append([Spacer(1, 12)])
236	line = []
237	style = getSampleStyleSheet()
238	for element in tableheader:
239	field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
240	field = Paragraph(field, style["Normal"])
241	line.append(field)
242	data.append(line)
243	for ticket in tabledata:
244	line = []
245	for element in tableheader:
246	field = formatted_text(getattr(ticket,element[1],u' '))
247	field = Paragraph(field, style["Normal"])
248	line.append(field)
249	data.append(line)
250	table = Table(data,colWidths=[
251	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
252	return table
253
254	def render_transcript_data(view, tableheader, levels_data, lang='en'):
255	"""Render children table for an existing frame.
256	"""
257	data = []
258	style = getSampleStyleSheet()
259	format_float = getUtility(IKofaUtils).format_float
260	for level in levels_data:
261	level_obj = level['level']
262	tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
263	headerline = []
264	tabledata = []
265	subheader = '%s %s, %s %s' % (
266	trans(_('Session'), lang),
267	view.session_dict[level_obj.level_session],
268	trans(_('Level'), lang),
269	view.level_dict[level_obj.level])
270	data.append(Paragraph(subheader, HEADING_STYLE))
271	for element in tableheader:
272	field = '<strong>%s</strong>' % formatted_text(element[0])
273	field = Paragraph(field, style["Normal"])
274	headerline.append(field)
275	tabledata.append(headerline)
276	for ticket in tickets:
277	ticketline = []
278	for element in tableheader:
279	field = formatted_text(getattr(ticket,element[1],u' '))
280	field = Paragraph(field, style["Normal"])
281	ticketline.append(field)
282	tabledata.append(ticketline)
283	table = Table(tabledata,colWidths=[
284	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
285	data.append(table)
286	sgpa = format_float(level['sgpa'], 2)
287	sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), sgpa)
288	#sgpa = '%s: %.2f' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
289	data.append(Paragraph(sgpa, style["Normal"]))
290	return data
291
292	def docs_as_flowables(view, lang='en'):
293	"""Create reportlab flowables out of scanned docs.
294	"""
295	# XXX: fix circular import problem
296	from waeup.kofa.browser.fileviewlets import FileManager
297	from waeup.kofa.browser import DEFAULT_IMAGE_PATH
298	style = getSampleStyleSheet()
299	data = []
300
301	# Collect viewlets
302	fm = FileManager(view.context, view.request, view)
303	fm.update()
304	if fm.viewlets:
305	sc_translation = trans(_('Scanned Documents'), lang)
306	data.append(Paragraph(sc_translation, HEADING_STYLE))
307	# Insert list of scanned documents
308	table_data = []
309	for viewlet in fm.viewlets:
310	if viewlet.file_exists:
311	# Show viewlet only if file exists
312	f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
313	img_path = getattr(getUtility(IExtFileStore).getFileByContext(
314	view.context, attr=viewlet.download_name), 'name', None)
315	#f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
316	if img_path is None:
317	pass
318	elif not img_path[-4:] in ('.jpg', '.JPG'):
319	# reportlab requires jpg images, I think.
320	f_text = Paragraph('%s (not displayable)' % (
321	viewlet.title,), ENTRY1_STYLE)
322	else:
323	f_text = Image(img_path, width=2cm, height=1cm, kind='bound')
324	table_data.append([f_label, f_text])
325	if table_data:
326	# safety belt; empty tables lead to problems.
327	data.append(Table(table_data, style=SLIP_STYLE))
328	return data
329
330	class StudentsUtils(grok.GlobalUtility):
331	"""A collection of methods subject to customization.
332	"""
333	grok.implements(IStudentsUtils)
334
335	def getReturningData(self, student):
336	""" Define what happens after school fee payment
337	depending on the student's senate verdict.
338	In the base configuration current level is always increased
339	by 100 no matter which verdict has been assigned.
340	"""
341	new_level = student['studycourse'].current_level + 100
342	new_session = student['studycourse'].current_session + 1
343	return new_session, new_level
344
345	def setReturningData(self, student):
346	""" Define what happens after school fee payment
347	depending on the student's senate verdict.
348	This method folllows the same algorithm as `getReturningData` but
349	it also sets the new values.
350	"""
351	new_session, new_level = self.getReturningData(student)
352	try:
353	student['studycourse'].current_level = new_level
354	except ConstraintNotSatisfied:
355	# Do not change level if level exceeds the
356	# certificate's end_level.
357	pass
358	student['studycourse'].current_session = new_session
359	verdict = student['studycourse'].current_verdict
360	student['studycourse'].current_verdict = '0'
361	student['studycourse'].previous_verdict = verdict
362	return
363
364	def _getSessionConfiguration(self, session):
365	try:
366	return grok.getSite()['configuration'][str(session)]
367	except KeyError:
368	return None
369
370	def _isPaymentDisabled(self, p_session, category, student):
371	academic_session = self._getSessionConfiguration(p_session)
372	if category == 'schoolfee' and \
373	'sf_all' in academic_session.payment_disabled:
374	return True
375	return False
376
377	def samePaymentMade(self, student, category, p_item, p_session):
378	for key in student['payments'].keys():
379	ticket = student['payments'][key]
380	if ticket.p_state == 'paid' and\
381	ticket.p_category == category and \
382	ticket.p_item == p_item and \
383	ticket.p_session == p_session:
384	return True
385	return False
386
387	def setPaymentDetails(self, category, student,
388	previous_session, previous_level):
389	"""Create a payment ticket and set the payment data of a
390	student for the payment category specified.
391	"""
392	p_item = u''
393	amount = 0.0
394	if previous_session:
395	if previous_session < student['studycourse'].entry_session:
396	return _('The previous session must not fall below '
397	'your entry session.'), None
398	if category == 'schoolfee':
399	# School fee is always paid for the following session
400	if previous_session > student['studycourse'].current_session:
401	return _('This is not a previous session.'), None
402	else:
403	if previous_session > student['studycourse'].current_session - 1:
404	return _('This is not a previous session.'), None
405	p_session = previous_session
406	p_level = previous_level
407	p_current = False
408	else:
409	p_session = student['studycourse'].current_session
410	p_level = student['studycourse'].current_level
411	p_current = True
412	academic_session = self._getSessionConfiguration(p_session)
413	if academic_session == None:
414	return _(u'Session configuration object is not available.'), None
415	# Determine fee.
416	if category == 'schoolfee':
417	try:
418	certificate = student['studycourse'].certificate
419	p_item = certificate.code
420	except (AttributeError, TypeError):
421	return _('Study course data are incomplete.'), None
422	if previous_session:
423	# Students can pay for previous sessions in all
424	# workflow states. Fresh students are excluded by the
425	# update method of the PreviousPaymentAddFormPage.
426	if previous_level == 100:
427	amount = getattr(certificate, 'school_fee_1', 0.0)
428	else:
429	amount = getattr(certificate, 'school_fee_2', 0.0)
430	else:
431	if student.state == CLEARED:
432	amount = getattr(certificate, 'school_fee_1', 0.0)
433	elif student.state == RETURNING:
434	# In case of returning school fee payment the
435	# payment session and level contain the values of
436	# the session the student has paid for. Payment
437	# session is always next session.
438	p_session, p_level = self.getReturningData(student)
439	academic_session = self._getSessionConfiguration(p_session)
440	if academic_session == None:
441	return _(
442	u'Session configuration object is not available.'
443	), None
444	amount = getattr(certificate, 'school_fee_2', 0.0)
445	elif student.is_postgrad and student.state == PAID:
446	# Returning postgraduate students also pay for the
447	# next session but their level always remains the
448	# same.
449	p_session += 1
450	academic_session = self._getSessionConfiguration(p_session)
451	if academic_session == None:
452	return _(
453	u'Session configuration object is not available.'
454	), None
455	amount = getattr(certificate, 'school_fee_2', 0.0)
456	elif category == 'clearance':
457	try:
458	p_item = student['studycourse'].certificate.code
459	except (AttributeError, TypeError):
460	return _('Study course data are incomplete.'), None
461	amount = academic_session.clearance_fee
462	elif category == 'bed_allocation':
463	p_item = self.getAccommodationDetails(student)['bt']
464	amount = academic_session.booking_fee
465	elif category == 'hostel_maintenance':
466	amount = 0.0
467	bedticket = student['accommodation'].get(
468	str(student.current_session), None)
469	if bedticket is not None and bedticket.bed is not None:
470	p_item = bedticket.bed_coordinates
471	if bedticket.bed.__parent__.maint_fee > 0:
472	amount = bedticket.bed.__parent__.maint_fee
473	else:
474	# fallback
475	amount = academic_session.maint_fee
476	else:
477	return _(u'No bed allocated.'), None
478	elif category == 'transcript':
479	amount = academic_session.transcript_fee
480	elif category == 'transfer':
481	amount = academic_session.transfer_fee
482	elif category == 'late_registration':
483	amount = academic_session.late_registration_fee
484	if amount in (0.0, None):
485	return _('Amount could not be determined.'), None
486	if self.samePaymentMade(student, category, p_item, p_session):
487	return _('This type of payment has already been made.'), None
488	if self._isPaymentDisabled(p_session, category, student):
489	return _('This category of payments has been disabled.'), None
490	payment = createObject(u'waeup.StudentOnlinePayment')
491	timestamp = ("%d" % int(time()*10000))[1:]
492	payment.p_id = "p%s" % timestamp
493	payment.p_category = category
494	payment.p_item = p_item
495	payment.p_session = p_session
496	payment.p_level = p_level
497	payment.p_current = p_current
498	payment.amount_auth = amount
499	return None, payment
500
501	def setBalanceDetails(self, category, student,
502	balance_session, balance_level, balance_amount):
503	"""Create a balance payment ticket and set the payment data
504	as selected by the student.
505	"""
506	p_item = u'Balance'
507	p_session = balance_session
508	p_level = balance_level
509	p_current = False
510	amount = balance_amount
511	academic_session = self._getSessionConfiguration(p_session)
512	if academic_session == None:
513	return _(u'Session configuration object is not available.'), None
514	if amount in (0.0, None) or amount < 0:
515	return _('Amount must be greater than 0.'), 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	return None, payment
526
527	def increaseMatricInteger(self, student):
528	"""Increase counter for matric numbers.
529	This counter can be a centrally stored attribute or an attribute of
530	faculties, departments or certificates. In the base package the counter
531	is as an attribute of the site configuration container.
532	"""
533	grok.getSite()['configuration'].next_matric_integer += 1
534	return
535
536	def constructMatricNumber(self, student):
537	"""Fetch the matric number counter which fits the student and
538	construct the new matric number of the student.
539	In the base package the counter is returned which is as an attribute
540	of the site configuration container.
541	"""
542	next_integer = grok.getSite()['configuration'].next_matric_integer
543	if next_integer == 0:
544	return _('Matriculation number cannot be set.'), None
545	return None, unicode(next_integer)
546
547	def setMatricNumber(self, student):
548	"""Set matriculation number of student. If the student's matric number
549	is unset a new matric number is
550	constructed according to the matriculation number construction rules
551	defined in the `constructMatricNumber` method. The new matric number is
552	set, the students catalog updated. The corresponding matric number
553	counter is increased by one.
554
555	This method is tested but not used in the base package. It can
556	be used in custom packages by adding respective views
557	and by customizing `increaseMatricInteger` and `constructMatricNumber`
558	according to the university's matriculation number construction rules.
559
560	The method can be disabled by setting the counter to zero.
561	"""
562	if student.matric_number is not None:
563	return _('Matriculation number already set.'), None
564	if student.certcode is None:
565	return _('No certificate assigned.'), None
566	error, matric_number = self.constructMatricNumber(student)
567	if error:
568	return error, None
569	try:
570	student.matric_number = matric_number
571	except MatNumNotInSource:
572	return _('Matriculation number %s exists.' % matric_number), None
573	notify(grok.ObjectModifiedEvent(student))
574	self.increaseMatricInteger(student)
575	return None, matric_number
576
577	def getAccommodationDetails(self, student):
578	"""Determine the accommodation data of a student.
579	"""
580	d = {}
581	d['error'] = u''
582	hostels = grok.getSite()['hostels']
583	d['booking_session'] = hostels.accommodation_session
584	d['allowed_states'] = hostels.accommodation_states
585	d['startdate'] = hostels.startdate
586	d['enddate'] = hostels.enddate
587	d['expired'] = hostels.expired
588	# Determine bed type
589	studycourse = student['studycourse']
590	certificate = getattr(studycourse,'certificate',None)
591	entry_session = studycourse.entry_session
592	current_level = studycourse.current_level
593	if None in (entry_session, current_level, certificate):
594	return d
595	end_level = certificate.end_level
596	if current_level == 10:
597	bt = 'pr'
598	elif entry_session == grok.getSite()['hostels'].accommodation_session:
599	bt = 'fr'
600	elif current_level >= end_level:
601	bt = 'fi'
602	else:
603	bt = 're'
604	if student.sex == 'f':
605	sex = 'female'
606	else:
607	sex = 'male'
608	special_handling = 'regular'
609	d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
610	return d
611
612	def checkAccommodationRequirements(self, student, acc_details):
613	if acc_details.get('expired', False):
614	startdate = acc_details.get('startdate')
615	enddate = acc_details.get('enddate')
616	if startdate and enddate:
617	tz = getUtility(IKofaUtils).tzinfo
618	startdate = to_timezone(
619	startdate, tz).strftime("%d/%m/%Y %H:%M:%S")
620	enddate = to_timezone(
621	enddate, tz).strftime("%d/%m/%Y %H:%M:%S")
622	return _("Outside booking period: ${a} - ${b}",
623	mapping = {'a': startdate, 'b': enddate})
624	else:
625	return _("Outside booking period.")
626	if not acc_details.get('bt'):
627	return _("Your data are incomplete.")
628	if not student.state in acc_details['allowed_states']:
629	return _("You are in the wrong registration state.")
630	if student['studycourse'].current_session != acc_details[
631	'booking_session']:
632	return _('Your current session does not '
633	'match accommodation session.')
634	if str(acc_details['booking_session']) in student['accommodation'].keys():
635	return _('You already booked a bed space in '
636	'current accommodation session.')
637	return
638
639	def selectBed(self, available_beds, desired_hostel=None):
640	"""Select a bed from a filtered list of available beds.
641	In the base configuration beds are sorted by the sort id
642	of the hostel and the bed number. The first bed found in
643	this sorted list is taken.
644	"""
645	sorted_beds = sorted(available_beds,
646	key=lambda bed: 1000 * bed.__parent__.sort_id + bed.bed_number)
647	if desired_hostel:
648	# Filter desired hostel beds
649	filtered_beds = [bed for bed in sorted_beds
650	if bed.bed_id.startswith(desired_hostel)]
651	if not filtered_beds:
652	return
653	return filtered_beds[0]
654	return sorted_beds[0]
655
656	def _admissionText(self, student, portal_language):
657	inst_name = grok.getSite()['configuration'].name
658	text = trans(_(
659	'This is to inform you that you have been provisionally'
660	' admitted into ${a} as follows:', mapping = {'a': inst_name}),
661	portal_language)
662	return text
663
664	def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
665	pre_text=None, post_text=None,):
666	"""Render pdf admission letter.
667	"""
668	if student is None:
669	return
670	style = getSampleStyleSheet()
671	creator = self.getPDFCreator(student)
672	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
673	data = []
674	doc_title = view.label
675	author = '%s (%s)' % (view.request.principal.title,
676	view.request.principal.id)
677	footer_text = view.label.split('\n')
678	if len(footer_text) > 1:
679	# We can add a department in first line
680	footer_text = footer_text[1]
681	else:
682	# Only the first line is used for the footer
683	footer_text = footer_text[0]
684	if getattr(student, 'student_id', None) is not None:
685	footer_text = "%s - %s - " % (student.student_id, footer_text)
686
687	# Text before student data
688	if pre_text is None:
689	html = format_html(self._admissionText(student, portal_language))
690	else:
691	html = format_html(pre_text)
692	if html:
693	data.append(Paragraph(html, NOTE_STYLE))
694	data.append(Spacer(1, 20))
695
696	# Student data
697	data.append(render_student_data(view, student,
698	omit_fields, lang=portal_language,
699	slipname='admission_slip.pdf'))
700
701	# Text after student data
702	data.append(Spacer(1, 20))
703	if post_text is None:
704	datelist = student.history.messages[0].split()[0].split('-')
705	creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
706	post_text = trans(_(
707	'Your Kofa student record was created on ${a}.',
708	mapping = {'a': creation_date}),
709	portal_language)
710	#html = format_html(post_text)
711	#data.append(Paragraph(html, NOTE_STYLE))
712
713	# Create pdf stream
714	view.response.setHeader(
715	'Content-Type', 'application/pdf')
716	pdf_stream = creator.create_pdf(
717	data, None, doc_title, author=author, footer=footer_text,
718	note=post_text)
719	return pdf_stream
720
721	def getPDFCreator(self, context):
722	"""Get a pdf creator suitable for `context`.
723	The default implementation always returns the default creator.
724	"""
725	return getUtility(IPDFCreator)
726
727	def renderPDF(self, view, filename='slip.pdf', student=None,
728	studentview=None,
729	tableheader=[], tabledata=[],
730	note=None, signatures=None, sigs_in_footer=(),
731	show_scans=True, topMargin=1.5,
732	omit_fields=()):
733	"""Render pdf slips for various pages (also some pages
734	in the applicants module).
735	"""
736	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
737	# XXX: tell what the different parameters mean
738	style = getSampleStyleSheet()
739	creator = self.getPDFCreator(student)
740	data = []
741	doc_title = view.label
742	author = '%s (%s)' % (view.request.principal.title,
743	view.request.principal.id)
744	footer_text = view.label.split('\n')
745	if len(footer_text) > 1:
746	# We can add a department in first line, second line is used
747	footer_text = footer_text[1]
748	else:
749	# Only the first line is used for the footer
750	footer_text = footer_text[0]
751	if getattr(student, 'student_id', None) is not None:
752	footer_text = "%s - %s - " % (student.student_id, footer_text)
753
754	# Insert student data table
755	if student is not None:
756	bd_translation = trans(_('Base Data'), portal_language)
757	data.append(Paragraph(bd_translation, HEADING_STYLE))
758	data.append(render_student_data(
759	studentview, view.context, omit_fields, lang=portal_language,
760	slipname=filename))
761
762	# Insert widgets
763	if view.form_fields:
764	data.append(Paragraph(view.title, HEADING_STYLE))
765	separators = getattr(self, 'SEPARATORS_DICT', {})
766	table = creator.getWidgetsTable(
767	view.form_fields, view.context, None, lang=portal_language,
768	separators=separators)
769	data.append(table)
770
771	# Insert scanned docs
772	if show_scans:
773	data.extend(docs_as_flowables(view, portal_language))
774
775	# Insert history
776	if filename.startswith('clearance'):
777	hist_translation = trans(_('Workflow History'), portal_language)
778	data.append(Paragraph(hist_translation, HEADING_STYLE))
779	data.extend(creator.fromStringList(student.history.messages))
780
781	# Insert content tables (optionally on second page)
782	if hasattr(view, 'tabletitle'):
783	for i in range(len(view.tabletitle)):
784	if tabledata[i] and tableheader[i]:
785	#data.append(PageBreak())
786	#data.append(Spacer(1, 20))
787	data.append(Paragraph(view.tabletitle[i], HEADING_STYLE))
788	data.append(Spacer(1, 8))
789	contenttable = render_table_data(tableheader[i],tabledata[i])
790	data.append(contenttable)
791
792	# Insert signatures
793	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
794	# do not have a test for the following lines.
795	if signatures and not sigs_in_footer:
796	data.append(Spacer(1, 20))
797	# Render one signature table per signature to
798	# get date and signature in line.
799	for signature in signatures:
800	signaturetables = get_signature_tables(signature)
801	data.append(signaturetables[0])
802
803	view.response.setHeader(
804	'Content-Type', 'application/pdf')
805	try:
806	pdf_stream = creator.create_pdf(
807	data, None, doc_title, author=author, footer=footer_text,
808	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
809	except IOError:
810	view.flash('Error in image file.')
811	return view.redirect(view.url(view.context))
812	except LayoutError, err:
813	view.flash(
814	'PDF file could not be created. Reportlab error message: %s'
815	% escape(err.message),
816	type="danger")
817	return view.redirect(view.url(view.context))
818	return pdf_stream
819
820	def GPABoundaries(self, faccode=None, depcode=None, certcode=None):
821	return ((1, 'Fail'),
822	(1.5, 'Pass'),
823	(2.4, '3rd Class'),
824	(3.5, '2nd Class Lower'),
825	(4.5, '2nd Class Upper'),
826	(5, '1st Class'))
827
828	def getClassFromCGPA(self, gpa, student):
829	"""Determine the class of degree. In some custom packages
830	this class depends on e.g. the entry session of the student. In the
831	base package, it does not.
832	"""
833	if gpa < self.GPABoundaries()[0][0]:
834	return 0, self.GPABoundaries()[0][1]
835	if gpa < self.GPABoundaries()[1][0]:
836	return 1, self.GPABoundaries()[1][1]
837	if gpa < self.GPABoundaries()[2][0]:
838	return 2, self.GPABoundaries()[2][1]
839	if gpa < self.GPABoundaries()[3][0]:
840	return 3, self.GPABoundaries()[3][1]
841	if gpa < self.GPABoundaries()[4][0]:
842	return 4, self.GPABoundaries()[4][1]
843	if gpa <= self.GPABoundaries()[5][0]:
844	return 5, self.GPABoundaries()[5][1]
845	return
846
847	def getDegreeClassNumber(self, level_obj):
848	"""Get degree class number (used for SessionResultsPresentation
849	reports).
850	"""
851	if level_obj.gpa_params[1] == 0:
852	# No credits weighted
853	return 6
854	return self.getClassFromCGPA(
855	level_obj.cumulative_params[0], level_obj.student)[0]
856
857	def _saveTranscriptPDF(self, student, transcript):
858	"""Create a transcript PDF file and store it in student folder.
859	"""
860	file_store = getUtility(IExtFileStore)
861	file_id = IFileStoreNameChooser(student).chooseName(
862	attr="final_transcript.pdf")
863	file_store.createFile(file_id, StringIO(transcript))
864	return
865
866	def renderPDFTranscript(self, view, filename='transcript.pdf',
867	student=None,
868	studentview=None,
869	note=None,
870	signatures=(),
871	sigs_in_footer=(),
872	digital_sigs=(),
873	show_scans=True, topMargin=1.5,
874	omit_fields=(),
875	tableheader=None,
876	no_passport=False,
877	save_file=False):
878	"""Render pdf slip of a transcripts.
879	"""
880	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
881	# XXX: tell what the different parameters mean
882	style = getSampleStyleSheet()
883	creator = self.getPDFCreator(student)
884	data = []
885	doc_title = view.label
886	author = '%s (%s)' % (view.request.principal.title,
887	view.request.principal.id)
888	footer_text = view.label.split('\n')
889	if len(footer_text) > 2:
890	# We can add a department in first line
891	footer_text = footer_text[1]
892	else:
893	# Only the first line is used for the footer
894	footer_text = footer_text[0]
895	if getattr(student, 'student_id', None) is not None:
896	footer_text = "%s - %s - " % (student.student_id, footer_text)
897
898	# Insert student data table
899	if student is not None:
900	#bd_translation = trans(_('Base Data'), portal_language)
901	#data.append(Paragraph(bd_translation, HEADING_STYLE))
902	data.append(render_student_data(
903	studentview, view.context,
904	omit_fields, lang=portal_language,
905	slipname=filename,
906	no_passport=no_passport))
907
908	transcript_data = view.context.getTranscriptData()
909	levels_data = transcript_data[0]
910
911	contextdata = []
912	f_label = trans(_('Course of Study:'), portal_language)
913	f_label = Paragraph(f_label, ENTRY1_STYLE)
914	f_text = formatted_text(view.context.certificate.longtitle)
915	f_text = Paragraph(f_text, ENTRY1_STYLE)
916	contextdata.append([f_label,f_text])
917
918	f_label = trans(_('Faculty:'), portal_language)
919	f_label = Paragraph(f_label, ENTRY1_STYLE)
920	f_text = formatted_text(
921	view.context.certificate.__parent__.__parent__.__parent__.longtitle)
922	f_text = Paragraph(f_text, ENTRY1_STYLE)
923	contextdata.append([f_label,f_text])
924
925	f_label = trans(_('Department:'), portal_language)
926	f_label = Paragraph(f_label, ENTRY1_STYLE)
927	f_text = formatted_text(
928	view.context.certificate.__parent__.__parent__.longtitle)
929	f_text = Paragraph(f_text, ENTRY1_STYLE)
930	contextdata.append([f_label,f_text])
931
932	f_label = trans(_('Entry Session:'), portal_language)
933	f_label = Paragraph(f_label, ENTRY1_STYLE)
934	f_text = formatted_text(
935	view.session_dict.get(view.context.entry_session))
936	f_text = Paragraph(f_text, ENTRY1_STYLE)
937	contextdata.append([f_label,f_text])
938
939	f_label = trans(_('Entry Mode:'), portal_language)
940	f_label = Paragraph(f_label, ENTRY1_STYLE)
941	f_text = formatted_text(view.studymode_dict.get(
942	view.context.entry_mode))
943	f_text = Paragraph(f_text, ENTRY1_STYLE)
944	contextdata.append([f_label,f_text])
945
946	f_label = trans(_('Cumulative GPA:'), portal_language)
947	f_label = Paragraph(f_label, ENTRY1_STYLE)
948	format_float = getUtility(IKofaUtils).format_float
949	cgpa = format_float(transcript_data[1], 3)
950	f_text = formatted_text('%s (%s)' % (
951	cgpa, self.getClassFromCGPA(transcript_data[1], student)[1]))
952	f_text = Paragraph(f_text, ENTRY1_STYLE)
953	contextdata.append([f_label,f_text])
954
955	contexttable = Table(contextdata,style=SLIP_STYLE)
956	data.append(contexttable)
957
958	transcripttables = render_transcript_data(
959	view, tableheader, levels_data, lang=portal_language)
960	data.extend(transcripttables)
961
962	# Insert signatures
963	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
964	# do not have a test for the following lines.
965	if signatures and not sigs_in_footer:
966	data.append(Spacer(1, 20))
967	# Render one signature table per signature to
968	# get date and signature in line.
969	for signature in signatures:
970	signaturetables = get_signature_tables(signature)
971	data.append(signaturetables[0])
972
973	# Insert digital signatures
974	if digital_sigs:
975	data.append(Spacer(1, 20))
976	sigs = digital_sigs.split('\n')
977	for sig in sigs:
978	data.append(Paragraph(sig, NOTE_STYLE))
979
980	view.response.setHeader(
981	'Content-Type', 'application/pdf')
982	try:
983	pdf_stream = creator.create_pdf(
984	data, None, doc_title, author=author, footer=footer_text,
985	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
986	except IOError:
987	view.flash(_('Error in image file.'))
988	return view.redirect(view.url(view.context))
989	if save_file:
990	self._saveTranscriptPDF(student, pdf_stream)
991	return
992	return pdf_stream
993
994	def renderPDFCourseticketsOverview(
995	self, view, session, data, lecturers, orientation):
996	"""Render pdf slip of course tickets for a lecturer.
997	"""
998	filename = 'coursetickets_%s_%s_%s.pdf' % (
999	view.context.code, session, view.request.principal.id)
1000	session = academic_sessions_vocab.getTerm(session).title
1001	creator = getUtility(IPDFCreator, name=orientation)
1002	style = getSampleStyleSheet()
1003	pdf_data = [Paragraph(
1004	translate(_('<b>Lecturer(s): ${a}</b>',
1005	mapping = {'a':lecturers})), style["Normal"]),]
1006	pdf_data += [Paragraph(
1007	translate(_('<b>Credits: ${a}</b>',
1008	mapping = {'a':view.context.credits})), style["Normal"]),]
1009	# Not used in base package.
1010	if data[1]:
1011	pdf_data += [Paragraph(
1012	translate(_('<b>${a}</b>',
1013	mapping = {'a':data[1][0]})), style["Normal"]),]
1014	pdf_data += [Paragraph(
1015	translate(_('<b>${a}</b>',
1016	mapping = {'a':data[1][1]})), style["Normal"]),]
1017
1018	pdf_data += [Paragraph(
1019	translate(_('<b>Total Students: ${a}</b>',
1020	mapping = {'a':data[1][2]})), style["Normal"]),]
1021	pdf_data += [Paragraph(
1022	translate(_('<b>Total Pass: ${a} (${b}%)</b>',
1023	mapping = {'a':data[1][3],'b':data[1][4]})), style["Normal"]),]
1024	pdf_data += [Paragraph(
1025	translate(_('<b>Total Fail: ${a} (${b}%)</b>',
1026	mapping = {'a':data[1][5],'b':data[1][6]})), style["Normal"]),]
1027	pdf_data.append(Spacer(1, 20))
1028	pdf_data += [Table(data[0], style=CONTENT_STYLE)]
1029	doc_title = translate(_('${a} (${b}) - Academic Session ${d}',
1030	mapping = {'a':view.context.title,
1031	'b':view.context.code,
1032	'd':session}))
1033	footer_title = translate(_('${a} (${b}) - ${d}',
1034	mapping = {'a':view.context.title,
1035	'b':view.context.code,
1036	'd':session}))
1037	author = '%s (%s)' % (view.request.principal.title,
1038	view.request.principal.id)
1039	view.response.setHeader(
1040	'Content-Type', 'application/pdf')
1041	view.response.setHeader(
1042	'Content-Disposition:', 'attachment; filename="%s' % filename)
1043	pdf_stream = creator.create_pdf(
1044	pdf_data, None, doc_title, author, footer_title + ' -'
1045	)
1046	return pdf_stream
1047
1048	def warnCreditsOOR(self, studylevel, course=None):
1049	"""Return message if credits are out of range. In the base
1050	package only maximum credits is set.
1051	"""
1052	if course and studylevel.total_credits + course.credits > 50:
1053	return _('Maximum credits exceeded.')
1054	elif studylevel.total_credits > 50:
1055	return _('Maximum credits exceeded.')
1056	return
1057
1058	def getBedCoordinates(self, bedticket):
1059	"""Return descriptive bed coordinates.
1060	This method can be used to customize the `display_coordinates`
1061	property method in order to display a
1062	customary description of the bed space.
1063	"""
1064	return bedticket.bed_coordinates
1065
1066	def clearance_disabled_message(self, student):
1067	"""Render message if clearance is disabled.
1068	"""
1069	try:
1070	session_config = grok.getSite()[
1071	'configuration'][str(student.current_session)]
1072	except KeyError:
1073	return _('Session configuration object is not available.')
1074	if not session_config.clearance_enabled:
1075	return _('Clearance is disabled for this session.')
1076	return None
1077
1078	#: A dictionary which maps widget names to headlines. The headline
1079	#: is rendered in forms and on pdf slips above the respective
1080	#: display or input widget. There are no separating headlines
1081	#: in the base package.
1082	SEPARATORS_DICT = {}
1083
1084	#: A tuple containing names of file upload viewlets which are not shown
1085	#: on the `StudentClearanceManageFormPage`. Nothing is being skipped
1086	#: in the base package. This attribute makes only sense, if intermediate
1087	#: custom packages are being used, like we do for all Nigerian portals.
1088	SKIP_UPLOAD_VIEWLETS = ()
1089
1090	#: A tuple containing the names of registration states in which changing of
1091	#: passport pictures is allowed.
1092	PORTRAIT_CHANGE_STATES = (ADMITTED,)
1093
1094	#: A tuple containing all exporter names referring to students or
1095	#: subobjects thereof.
1096	STUDENT_EXPORTER_NAMES = ('students', 'studentstudycourses',
1097	'studentstudylevels', 'coursetickets',
1098	'studentpayments', 'studentunpaidpayments',
1099	'bedtickets', 'sfpaymentsoverview', 'sessionpaymentsoverview',
1100	'studylevelsoverview', 'combocard', 'bursary')
1101
1102	#: A tuple containing all exporter names needed for backing
1103	#: up student data
1104	STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
1105	'studentstudylevels', 'coursetickets',
1106	'studentpayments', 'bedtickets')
1107
1108	#: A prefix used when generating new student ids. Each student id will
1109	#: start with this string. The default is 'K' for Kofa.
1110	STUDENT_ID_PREFIX = u'K'

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