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source: main/waeup.kofa/trunk/src/waeup/kofa/students/utils.py @ 14949

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1	## $Id: utils.py 14915 2017-11-30 07:44:55Z 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 reportlab.lib import colors
23	from reportlab.lib.units import cm
24	from reportlab.lib.pagesizes import A4
25	from reportlab.lib.styles import getSampleStyleSheet
26	from reportlab.platypus import Paragraph, Image, Table, Spacer
27	from reportlab.platypus.doctemplate import LayoutError
28	from zope.event import notify
29	from zope.schema.interfaces import ConstraintNotSatisfied
30	from zope.component import getUtility, createObject
31	from zope.formlib.form import setUpEditWidgets
32	from zope.i18n import translate
33	from waeup.kofa.interfaces import (
34	IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED,
35	academic_sessions_vocab)
36	from waeup.kofa.interfaces import MessageFactory as _
37	from waeup.kofa.students.interfaces import IStudentsUtils
38	from waeup.kofa.students.workflow import ADMITTED
39	from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
40	from waeup.kofa.browser.pdf import (
41	ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
42	get_signature_tables, get_qrcode)
43	from waeup.kofa.browser.interfaces import IPDFCreator
44	from waeup.kofa.utils.helpers import to_timezone
45
46	SLIP_STYLE = [
47	('VALIGN',(0,0),(-1,-1),'TOP'),
48	#('FONT', (0,0), (-1,-1), 'Helvetica', 11),
49	]
50
51	CONTENT_STYLE = [
52	('VALIGN',(0,0),(-1,-1),'TOP'),
53	#('FONT', (0,0), (-1,-1), 'Helvetica', 8),
54	#('TEXTCOLOR',(0,0),(-1,0),colors.white),
55	#('BACKGROUND',(0,0),(-1,0),colors.black),
56	('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
57	('BOX', (0,0), (-1,-1), 1, colors.black),
58	]
59
60	FONT_SIZE = 10
61	FONT_COLOR = 'black'
62
63	def trans(text, lang):
64	# shortcut
65	return translate(text, 'waeup.kofa', target_language=lang)
66
67	def formatted_text(text, color=FONT_COLOR, lang='en'):
68	"""Turn `text`, `color` and `size` into an HTML snippet.
69
70	The snippet is suitable for use with reportlab and generating PDFs.
71	Wraps the `text` into a ``<font>`` tag with passed attributes.
72
73	Also non-strings are converted. Raw strings are expected to be
74	utf-8 encoded (usually the case for widgets etc.).
75
76	Finally, a br tag is added if widgets contain div tags
77	which are not supported by reportlab.
78
79	The returned snippet is unicode type.
80	"""
81	if not isinstance(text, unicode):
82	if isinstance(text, basestring):
83	text = text.decode('utf-8')
84	else:
85	text = unicode(text)
86	if text == 'None':
87	text = ''
88	# Very long matriculation numbers need to be wrapped
89	if text.find(' ') == -1 and len(text.split('/')) > 6:
90	text = '/'.join(text.split('/')[:5]) + \
91	'/ ' + '/'.join(text.split('/')[5:])
92	# Mainly for boolean values we need our customized
93	# localisation of the zope domain
94	text = translate(text, 'zope', target_language=lang)
95	text = text.replace('</div>', '<br /></div>')
96	tag1 = u'<font color="%s">' % (color)
97	return tag1 + u'%s</font>' % text
98
99	def generate_student_id():
100	students = grok.getSite()['students']
101	new_id = students.unique_student_id
102	return new_id
103
104	def set_up_widgets(view, ignore_request=False):
105	view.adapters = {}
106	view.widgets = setUpEditWidgets(
107	view.form_fields, view.prefix, view.context, view.request,
108	adapters=view.adapters, for_display=True,
109	ignore_request=ignore_request
110	)
111
112	def render_student_data(studentview, context, omit_fields=(),
113	lang='en', slipname=None, no_passport=False):
114	"""Render student table for an existing frame.
115	"""
116	width, height = A4
117	set_up_widgets(studentview, ignore_request=True)
118	data_left = []
119	data_middle = []
120	style = getSampleStyleSheet()
121	img = getUtility(IExtFileStore).getFileByContext(
122	studentview.context, attr='passport.jpg')
123	if img is None:
124	from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
125	img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
126	doc_img = Image(img.name, width=4cm, height=4cm, kind='bound')
127	data_left.append([doc_img])
128	#data.append([Spacer(1, 12)])
129
130	f_label = trans(_('Name:'), lang)
131	f_label = Paragraph(f_label, ENTRY1_STYLE)
132	f_text = formatted_text(studentview.context.display_fullname)
133	f_text = Paragraph(f_text, ENTRY1_STYLE)
134	data_middle.append([f_label,f_text])
135
136	for widget in studentview.widgets:
137	if 'name' in widget.name:
138	continue
139	f_label = translate(
140	widget.label.strip(), 'waeup.kofa',
141	target_language=lang)
142	f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
143	f_text = formatted_text(widget(), lang=lang)
144	f_text = Paragraph(f_text, ENTRY1_STYLE)
145	data_middle.append([f_label,f_text])
146
147	if getattr(studentview.context, 'certcode', None):
148	if not 'certificate' in omit_fields:
149	f_label = trans(_('Study Course:'), lang)
150	f_label = Paragraph(f_label, ENTRY1_STYLE)
151	f_text = formatted_text(
152	studentview.context['studycourse'].certificate.longtitle)
153	f_text = Paragraph(f_text, ENTRY1_STYLE)
154	data_middle.append([f_label,f_text])
155	if not 'department' in omit_fields:
156	f_label = trans(_('Department:'), lang)
157	f_label = Paragraph(f_label, ENTRY1_STYLE)
158	f_text = formatted_text(
159	studentview.context[
160	'studycourse'].certificate.__parent__.__parent__.longtitle,
161	)
162	f_text = Paragraph(f_text, ENTRY1_STYLE)
163	data_middle.append([f_label,f_text])
164	if not 'faculty' in omit_fields:
165	f_label = trans(_('Faculty:'), lang)
166	f_label = Paragraph(f_label, ENTRY1_STYLE)
167	f_text = formatted_text(
168	studentview.context[
169	'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
170	)
171	f_text = Paragraph(f_text, ENTRY1_STYLE)
172	data_middle.append([f_label,f_text])
173	if not 'current_mode' in omit_fields:
174	studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
175	sm = studymodes_dict[studentview.context.current_mode]
176	f_label = trans(_('Study Mode:'), lang)
177	f_label = Paragraph(f_label, ENTRY1_STYLE)
178	f_text = formatted_text(sm)
179	f_text = Paragraph(f_text, ENTRY1_STYLE)
180	data_middle.append([f_label,f_text])
181	if not 'entry_session' in omit_fields:
182	f_label = trans(_('Entry Session:'), lang)
183	f_label = Paragraph(f_label, ENTRY1_STYLE)
184	entry_session = studentview.context.entry_session
185	entry_session = academic_sessions_vocab.getTerm(entry_session).title
186	f_text = formatted_text(entry_session)
187	f_text = Paragraph(f_text, ENTRY1_STYLE)
188	data_middle.append([f_label,f_text])
189	# Requested by Uniben, does not really make sense
190	if not 'current_level' in omit_fields:
191	f_label = trans(_('Current Level:'), lang)
192	f_label = Paragraph(f_label, ENTRY1_STYLE)
193	current_level = studentview.context['studycourse'].current_level
194	studylevelsource = StudyLevelSource().factory
195	current_level = studylevelsource.getTitle(
196	studentview.context, current_level)
197	f_text = formatted_text(current_level)
198	f_text = Paragraph(f_text, ENTRY1_STYLE)
199	data_middle.append([f_label,f_text])
200	if not 'date_of_birth' in omit_fields:
201	f_label = trans(_('Date of Birth:'), lang)
202	f_label = Paragraph(f_label, ENTRY1_STYLE)
203	date_of_birth = studentview.context.date_of_birth
204	tz = getUtility(IKofaUtils).tzinfo
205	date_of_birth = to_timezone(date_of_birth, tz)
206	if date_of_birth is not None:
207	date_of_birth = date_of_birth.strftime("%d/%m/%Y")
208	f_text = formatted_text(date_of_birth)
209	f_text = Paragraph(f_text, ENTRY1_STYLE)
210	data_middle.append([f_label,f_text])
211
212	if no_passport:
213	table = Table(data_middle,style=SLIP_STYLE)
214	table.hAlign = 'LEFT'
215	return table
216
217	# append QR code to the right
218	if slipname:
219	url = studentview.url(context, slipname)
220	data_right = [[get_qrcode(url, width=70.0)]]
221	table_right = Table(data_right,style=SLIP_STYLE)
222	else:
223	table_right = None
224
225	table_left = Table(data_left,style=SLIP_STYLE)
226	table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5cm, 5cm])
227	table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
228	return table
229
230	def render_table_data(tableheader, tabledata, lang='en'):
231	"""Render children table for an existing frame.
232	"""
233	data = []
234	#data.append([Spacer(1, 12)])
235	line = []
236	style = getSampleStyleSheet()
237	for element in tableheader:
238	field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
239	field = Paragraph(field, style["Normal"])
240	line.append(field)
241	data.append(line)
242	for ticket in tabledata:
243	line = []
244	for element in tableheader:
245	field = formatted_text(getattr(ticket,element[1],u' '))
246	field = Paragraph(field, style["Normal"])
247	line.append(field)
248	data.append(line)
249	table = Table(data,colWidths=[
250	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
251	return table
252
253	def render_transcript_data(view, tableheader, levels_data, lang='en'):
254	"""Render children table for an existing frame.
255	"""
256	data = []
257	style = getSampleStyleSheet()
258	format_float = getUtility(IKofaUtils).format_float
259	for level in levels_data:
260	level_obj = level['level']
261	tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
262	headerline = []
263	tabledata = []
264	subheader = '%s %s, %s %s' % (
265	trans(_('Session'), lang),
266	view.session_dict[level_obj.level_session],
267	trans(_('Level'), lang),
268	view.level_dict[level_obj.level])
269	data.append(Paragraph(subheader, HEADING_STYLE))
270	for element in tableheader:
271	field = '<strong>%s</strong>' % formatted_text(element[0])
272	field = Paragraph(field, style["Normal"])
273	headerline.append(field)
274	tabledata.append(headerline)
275	for ticket in tickets:
276	ticketline = []
277	for element in tableheader:
278	field = formatted_text(getattr(ticket,element[1],u' '))
279	field = Paragraph(field, style["Normal"])
280	ticketline.append(field)
281	tabledata.append(ticketline)
282	table = Table(tabledata,colWidths=[
283	element[2]*cm for element in tableheader], style=CONTENT_STYLE)
284	data.append(table)
285	sgpa = format_float(level['sgpa'], 2)
286	sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), sgpa)
287	#sgpa = '%s: %.2f' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
288	data.append(Paragraph(sgpa, style["Normal"]))
289	return data
290
291	def docs_as_flowables(view, lang='en'):
292	"""Create reportlab flowables out of scanned docs.
293	"""
294	# XXX: fix circular import problem
295	from waeup.kofa.browser.fileviewlets import FileManager
296	from waeup.kofa.browser import DEFAULT_IMAGE_PATH
297	style = getSampleStyleSheet()
298	data = []
299
300	# Collect viewlets
301	fm = FileManager(view.context, view.request, view)
302	fm.update()
303	if fm.viewlets:
304	sc_translation = trans(_('Scanned Documents'), lang)
305	data.append(Paragraph(sc_translation, HEADING_STYLE))
306	# Insert list of scanned documents
307	table_data = []
308	for viewlet in fm.viewlets:
309	if viewlet.file_exists:
310	# Show viewlet only if file exists
311	f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
312	img_path = getattr(getUtility(IExtFileStore).getFileByContext(
313	view.context, attr=viewlet.download_name), 'name', None)
314	#f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
315	if img_path is None:
316	pass
317	elif not img_path[-4:] in ('.jpg', '.JPG'):
318	# reportlab requires jpg images, I think.
319	f_text = Paragraph('%s (not displayable)' % (
320	viewlet.title,), ENTRY1_STYLE)
321	else:
322	f_text = Image(img_path, width=2cm, height=1cm, kind='bound')
323	table_data.append([f_label, f_text])
324	if table_data:
325	# safety belt; empty tables lead to problems.
326	data.append(Table(table_data, style=SLIP_STYLE))
327	return data
328
329	class StudentsUtils(grok.GlobalUtility):
330	"""A collection of methods subject to customization.
331	"""
332	grok.implements(IStudentsUtils)
333
334	def getReturningData(self, student):
335	""" Define what happens after school fee payment
336	depending on the student's senate verdict.
337	In the base configuration current level is always increased
338	by 100 no matter which verdict has been assigned.
339	"""
340	new_level = student['studycourse'].current_level + 100
341	new_session = student['studycourse'].current_session + 1
342	return new_session, new_level
343
344	def setReturningData(self, student):
345	""" Define what happens after school fee payment
346	depending on the student's senate verdict.
347	This method folllows the same algorithm as `getReturningData` but
348	it also sets the new values.
349	"""
350	new_session, new_level = self.getReturningData(student)
351	try:
352	student['studycourse'].current_level = new_level
353	except ConstraintNotSatisfied:
354	# Do not change level if level exceeds the
355	# certificate's end_level.
356	pass
357	student['studycourse'].current_session = new_session
358	verdict = student['studycourse'].current_verdict
359	student['studycourse'].current_verdict = '0'
360	student['studycourse'].previous_verdict = verdict
361	return
362
363	def _getSessionConfiguration(self, session):
364	try:
365	return grok.getSite()['configuration'][str(session)]
366	except KeyError:
367	return None
368
369	def _isPaymentDisabled(self, p_session, category, student):
370	academic_session = self._getSessionConfiguration(p_session)
371	if category == 'schoolfee' and \
372	'sf_all' in academic_session.payment_disabled:
373	return True
374	return False
375
376	def samePaymentMade(self, student, category, p_item, p_session):
377	for key in student['payments'].keys():
378	ticket = student['payments'][key]
379	if ticket.p_state == 'paid' and\
380	ticket.p_category == category and \
381	ticket.p_item == p_item and \
382	ticket.p_session == p_session:
383	return True
384	return False
385
386	def setPaymentDetails(self, category, student,
387	previous_session, previous_level):
388	"""Create a payment ticket and set the payment data of a
389	student for the payment category specified.
390	"""
391	p_item = u''
392	amount = 0.0
393	if previous_session:
394	if previous_session < student['studycourse'].entry_session:
395	return _('The previous session must not fall below '
396	'your entry session.'), None
397	if category == 'schoolfee':
398	# School fee is always paid for the following session
399	if previous_session > student['studycourse'].current_session:
400	return _('This is not a previous session.'), None
401	else:
402	if previous_session > student['studycourse'].current_session - 1:
403	return _('This is not a previous session.'), None
404	p_session = previous_session
405	p_level = previous_level
406	p_current = False
407	else:
408	p_session = student['studycourse'].current_session
409	p_level = student['studycourse'].current_level
410	p_current = True
411	academic_session = self._getSessionConfiguration(p_session)
412	if academic_session == None:
413	return _(u'Session configuration object is not available.'), None
414	# Determine fee.
415	if category == 'schoolfee':
416	try:
417	certificate = student['studycourse'].certificate
418	p_item = certificate.code
419	except (AttributeError, TypeError):
420	return _('Study course data are incomplete.'), None
421	if previous_session:
422	# Students can pay for previous sessions in all
423	# workflow states. Fresh students are excluded by the
424	# update method of the PreviousPaymentAddFormPage.
425	if previous_level == 100:
426	amount = getattr(certificate, 'school_fee_1', 0.0)
427	else:
428	amount = getattr(certificate, 'school_fee_2', 0.0)
429	else:
430	if student.state == CLEARED:
431	amount = getattr(certificate, 'school_fee_1', 0.0)
432	elif student.state == RETURNING:
433	# In case of returning school fee payment the
434	# payment session and level contain the values of
435	# the session the student has paid for. Payment
436	# session is always next session.
437	p_session, p_level = self.getReturningData(student)
438	academic_session = self._getSessionConfiguration(p_session)
439	if academic_session == None:
440	return _(
441	u'Session configuration object is not available.'
442	), None
443	amount = getattr(certificate, 'school_fee_2', 0.0)
444	elif student.is_postgrad and student.state == PAID:
445	# Returning postgraduate students also pay for the
446	# next session but their level always remains the
447	# same.
448	p_session += 1
449	academic_session = self._getSessionConfiguration(p_session)
450	if academic_session == None:
451	return _(
452	u'Session configuration object is not available.'
453	), None
454	amount = getattr(certificate, 'school_fee_2', 0.0)
455	elif category == 'clearance':
456	try:
457	p_item = student['studycourse'].certificate.code
458	except (AttributeError, TypeError):
459	return _('Study course data are incomplete.'), None
460	amount = academic_session.clearance_fee
461	elif category == 'bed_allocation':
462	p_item = self.getAccommodationDetails(student)['bt']
463	amount = academic_session.booking_fee
464	elif category == 'hostel_maintenance':
465	amount = 0.0
466	bedticket = student['accommodation'].get(
467	str(student.current_session), None)
468	if bedticket is not None and bedticket.bed is not None:
469	p_item = bedticket.bed_coordinates
470	if bedticket.bed.__parent__.maint_fee > 0:
471	amount = bedticket.bed.__parent__.maint_fee
472	else:
473	# fallback
474	amount = academic_session.maint_fee
475	else:
476	return _(u'No bed allocated.'), None
477	elif category == 'transcript':
478	amount = academic_session.transcript_fee
479	elif category == 'transfer':
480	amount = academic_session.transfer_fee
481	elif category == 'late_registration':
482	amount = academic_session.late_registration_fee
483	if amount in (0.0, None):
484	return _('Amount could not be determined.'), None
485	if self.samePaymentMade(student, category, p_item, p_session):
486	return _('This type of payment has already been made.'), None
487	if self._isPaymentDisabled(p_session, category, student):
488	return _('This category of payments has been disabled.'), None
489	payment = createObject(u'waeup.StudentOnlinePayment')
490	timestamp = ("%d" % int(time()*10000))[1:]
491	payment.p_id = "p%s" % timestamp
492	payment.p_category = category
493	payment.p_item = p_item
494	payment.p_session = p_session
495	payment.p_level = p_level
496	payment.p_current = p_current
497	payment.amount_auth = amount
498	return None, payment
499
500	def setBalanceDetails(self, category, student,
501	balance_session, balance_level, balance_amount):
502	"""Create a balance payment ticket and set the payment data
503	as selected by the student.
504	"""
505	p_item = u'Balance'
506	p_session = balance_session
507	p_level = balance_level
508	p_current = False
509	amount = balance_amount
510	academic_session = self._getSessionConfiguration(p_session)
511	if academic_session == None:
512	return _(u'Session configuration object is not available.'), None
513	if amount in (0.0, None) or amount < 0:
514	return _('Amount must be greater than 0.'), None
515	payment = createObject(u'waeup.StudentOnlinePayment')
516	timestamp = ("%d" % int(time()*10000))[1:]
517	payment.p_id = "p%s" % timestamp
518	payment.p_category = category
519	payment.p_item = p_item
520	payment.p_session = p_session
521	payment.p_level = p_level
522	payment.p_current = p_current
523	payment.amount_auth = amount
524	return None, payment
525
526	def increaseMatricInteger(self, student):
527	"""Increase counter for matric numbers.
528	This counter can be a centrally stored attribute or an attribute of
529	faculties, departments or certificates. In the base package the counter
530	is as an attribute of the site configuration container.
531	"""
532	grok.getSite()['configuration'].next_matric_integer += 1
533	return
534
535	def constructMatricNumber(self, student):
536	"""Fetch the matric number counter which fits the student and
537	construct the new matric number of the student.
538	In the base package the counter is returned which is as an attribute
539	of the site configuration container.
540	"""
541	next_integer = grok.getSite()['configuration'].next_matric_integer
542	if next_integer == 0:
543	return _('Matriculation number cannot be set.'), None
544	return None, unicode(next_integer)
545
546	def setMatricNumber(self, student):
547	"""Set matriculation number of student. If the student's matric number
548	is unset a new matric number is
549	constructed according to the matriculation number construction rules
550	defined in the `constructMatricNumber` method. The new matric number is
551	set, the students catalog updated. The corresponding matric number
552	counter is increased by one.
553
554	This method is tested but not used in the base package. It can
555	be used in custom packages by adding respective views
556	and by customizing `increaseMatricInteger` and `constructMatricNumber`
557	according to the university's matriculation number construction rules.
558
559	The method can be disabled by setting the counter to zero.
560	"""
561	if student.matric_number is not None:
562	return _('Matriculation number already set.'), None
563	if student.certcode is None:
564	return _('No certificate assigned.'), None
565	error, matric_number = self.constructMatricNumber(student)
566	if error:
567	return error, None
568	try:
569	student.matric_number = matric_number
570	except MatNumNotInSource:
571	return _('Matriculation number %s exists.' % matric_number), None
572	notify(grok.ObjectModifiedEvent(student))
573	self.increaseMatricInteger(student)
574	return None, matric_number
575
576	def getAccommodationDetails(self, student):
577	"""Determine the accommodation data of a student.
578	"""
579	d = {}
580	d['error'] = u''
581	hostels = grok.getSite()['hostels']
582	d['booking_session'] = hostels.accommodation_session
583	d['allowed_states'] = hostels.accommodation_states
584	d['startdate'] = hostels.startdate
585	d['enddate'] = hostels.enddate
586	d['expired'] = hostels.expired
587	# Determine bed type
588	studycourse = student['studycourse']
589	certificate = getattr(studycourse,'certificate',None)
590	entry_session = studycourse.entry_session
591	current_level = studycourse.current_level
592	if None in (entry_session, current_level, certificate):
593	return d
594	end_level = certificate.end_level
595	if current_level == 10:
596	bt = 'pr'
597	elif entry_session == grok.getSite()['hostels'].accommodation_session:
598	bt = 'fr'
599	elif current_level >= end_level:
600	bt = 'fi'
601	else:
602	bt = 're'
603	if student.sex == 'f':
604	sex = 'female'
605	else:
606	sex = 'male'
607	special_handling = 'regular'
608	d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
609	return d
610
611	def checkAccommodationRequirements(self, student, acc_details):
612	if acc_details.get('expired', False):
613	startdate = acc_details.get('startdate')
614	enddate = acc_details.get('enddate')
615	if startdate and enddate:
616	tz = getUtility(IKofaUtils).tzinfo
617	startdate = to_timezone(
618	startdate, tz).strftime("%d/%m/%Y %H:%M:%S")
619	enddate = to_timezone(
620	enddate, tz).strftime("%d/%m/%Y %H:%M:%S")
621	return _("Outside booking period: ${a} - ${b}",
622	mapping = {'a': startdate, 'b': enddate})
623	else:
624	return _("Outside booking period.")
625	if not acc_details.get('bt'):
626	return _("Your data are incomplete.")
627	if not student.state in acc_details['allowed_states']:
628	return _("You are in the wrong registration state.")
629	if student['studycourse'].current_session != acc_details[
630	'booking_session']:
631	return _('Your current session does not '
632	'match accommodation session.')
633	if str(acc_details['booking_session']) in student['accommodation'].keys():
634	return _('You already booked a bed space in '
635	'current accommodation session.')
636	return
637
638	def selectBed(self, available_beds, desired_hostel=None):
639	"""Select a bed from a filtered list of available beds.
640	In the base configuration beds are sorted by the sort id
641	of the hostel and the bed number. The first bed found in
642	this sorted list is taken.
643	"""
644	sorted_beds = sorted(available_beds,
645	key=lambda bed: 1000 * bed.__parent__.sort_id + bed.bed_number)
646	if desired_hostel:
647	# Filter desired hostel beds
648	filtered_beds = [bed for bed in sorted_beds
649	if bed.bed_id.startswith(desired_hostel)]
650	if not filtered_beds:
651	return
652	return filtered_beds[0]
653	return sorted_beds[0]
654
655	def _admissionText(self, student, portal_language):
656	inst_name = grok.getSite()['configuration'].name
657	text = trans(_(
658	'This is to inform you that you have been provisionally'
659	' admitted into ${a} as follows:', mapping = {'a': inst_name}),
660	portal_language)
661	return text
662
663	def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
664	pre_text=None, post_text=None,):
665	"""Render pdf admission letter.
666	"""
667	if student is None:
668	return
669	style = getSampleStyleSheet()
670	creator = self.getPDFCreator(student)
671	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
672	data = []
673	doc_title = view.label
674	author = '%s (%s)' % (view.request.principal.title,
675	view.request.principal.id)
676	footer_text = view.label.split('\n')
677	if len(footer_text) > 1:
678	# We can add a department in first line
679	footer_text = footer_text[1]
680	else:
681	# Only the first line is used for the footer
682	footer_text = footer_text[0]
683	if getattr(student, 'student_id', None) is not None:
684	footer_text = "%s - %s - " % (student.student_id, footer_text)
685
686	# Text before student data
687	if pre_text is None:
688	html = format_html(self._admissionText(student, portal_language))
689	else:
690	html = format_html(pre_text)
691	if html:
692	data.append(Paragraph(html, NOTE_STYLE))
693	data.append(Spacer(1, 20))
694
695	# Student data
696	data.append(render_student_data(view, student,
697	omit_fields, lang=portal_language,
698	slipname='admission_slip.pdf'))
699
700	# Text after student data
701	data.append(Spacer(1, 20))
702	if post_text is None:
703	datelist = student.history.messages[0].split()[0].split('-')
704	creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
705	post_text = trans(_(
706	'Your Kofa student record was created on ${a}.',
707	mapping = {'a': creation_date}),
708	portal_language)
709	#html = format_html(post_text)
710	#data.append(Paragraph(html, NOTE_STYLE))
711
712	# Create pdf stream
713	view.response.setHeader(
714	'Content-Type', 'application/pdf')
715	pdf_stream = creator.create_pdf(
716	data, None, doc_title, author=author, footer=footer_text,
717	note=post_text)
718	return pdf_stream
719
720	def getPDFCreator(self, context):
721	"""Get a pdf creator suitable for `context`.
722	The default implementation always returns the default creator.
723	"""
724	return getUtility(IPDFCreator)
725
726	def renderPDF(self, view, filename='slip.pdf', student=None,
727	studentview=None,
728	tableheader=[], tabledata=[],
729	note=None, signatures=None, sigs_in_footer=(),
730	show_scans=True, topMargin=1.5,
731	omit_fields=()):
732	"""Render pdf slips for various pages (also some pages
733	in the applicants module).
734	"""
735	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
736	# XXX: tell what the different parameters mean
737	style = getSampleStyleSheet()
738	creator = self.getPDFCreator(student)
739	data = []
740	doc_title = view.label
741	author = '%s (%s)' % (view.request.principal.title,
742	view.request.principal.id)
743	footer_text = view.label.split('\n')
744	if len(footer_text) > 1:
745	# We can add a department in first line, second line is used
746	footer_text = footer_text[1]
747	else:
748	# Only the first line is used for the footer
749	footer_text = footer_text[0]
750	if getattr(student, 'student_id', None) is not None:
751	footer_text = "%s - %s - " % (student.student_id, footer_text)
752
753	# Insert student data table
754	if student is not None:
755	bd_translation = trans(_('Base Data'), portal_language)
756	data.append(Paragraph(bd_translation, HEADING_STYLE))
757	data.append(render_student_data(
758	studentview, view.context, omit_fields, lang=portal_language,
759	slipname=filename))
760
761	# Insert widgets
762	if view.form_fields:
763	data.append(Paragraph(view.title, HEADING_STYLE))
764	separators = getattr(self, 'SEPARATORS_DICT', {})
765	table = creator.getWidgetsTable(
766	view.form_fields, view.context, None, lang=portal_language,
767	separators=separators)
768	data.append(table)
769
770	# Insert scanned docs
771	if show_scans:
772	data.extend(docs_as_flowables(view, portal_language))
773
774	# Insert history
775	if filename.startswith('clearance'):
776	hist_translation = trans(_('Workflow History'), portal_language)
777	data.append(Paragraph(hist_translation, HEADING_STYLE))
778	data.extend(creator.fromStringList(student.history.messages))
779
780	# Insert content tables (optionally on second page)
781	if hasattr(view, 'tabletitle'):
782	for i in range(len(view.tabletitle)):
783	if tabledata[i] and tableheader[i]:
784	#data.append(PageBreak())
785	#data.append(Spacer(1, 20))
786	data.append(Paragraph(view.tabletitle[i], HEADING_STYLE))
787	data.append(Spacer(1, 8))
788	contenttable = render_table_data(tableheader[i],tabledata[i])
789	data.append(contenttable)
790
791	# Insert signatures
792	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
793	# do not have a test for the following lines.
794	if signatures and not sigs_in_footer:
795	data.append(Spacer(1, 20))
796	# Render one signature table per signature to
797	# get date and signature in line.
798	for signature in signatures:
799	signaturetables = get_signature_tables(signature)
800	data.append(signaturetables[0])
801
802	view.response.setHeader(
803	'Content-Type', 'application/pdf')
804	try:
805	pdf_stream = creator.create_pdf(
806	data, None, doc_title, author=author, footer=footer_text,
807	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
808	except IOError:
809	view.flash('Error in image file.')
810	return view.redirect(view.url(view.context))
811	except LayoutError, err:
812	view.flash(
813	'PDF file could not be created. Reportlab error message: %s'
814	% escape(err.message),
815	type="danger")
816	return view.redirect(view.url(view.context))
817	return pdf_stream
818
819	def GPABoundaries(self, faccode=None, depcode=None, certcode=None):
820	return ((1, 'Fail'),
821	(1.5, 'Pass'),
822	(2.4, '3rd Class'),
823	(3.5, '2nd Class Lower'),
824	(4.5, '2nd Class Upper'),
825	(5, '1st Class'))
826
827	def getClassFromCGPA(self, gpa, student):
828	"""Determine the class of degree. In some custom packages
829	this class depends on e.g. the entry session of the student. In the
830	base package, it does not.
831	"""
832	if gpa < self.GPABoundaries()[0][0]:
833	return 0, self.GPABoundaries()[0][1]
834	if gpa < self.GPABoundaries()[1][0]:
835	return 1, self.GPABoundaries()[1][1]
836	if gpa < self.GPABoundaries()[2][0]:
837	return 2, self.GPABoundaries()[2][1]
838	if gpa < self.GPABoundaries()[3][0]:
839	return 3, self.GPABoundaries()[3][1]
840	if gpa < self.GPABoundaries()[4][0]:
841	return 4, self.GPABoundaries()[4][1]
842	if gpa <= self.GPABoundaries()[5][0]:
843	return 5, self.GPABoundaries()[5][1]
844	return 'N/A'
845
846	def getDegreeClassNumber(self, level_obj):
847	"""Get degree class number (used for SessionResultsPresentation
848	reports).
849	"""
850	if level_obj.gpa_params[1] == 0:
851	# No credits weighted
852	return 6
853	return self.getClassFromCGPA(
854	level_obj.cumulative_params[0], level_obj.student)[0]
855
856	def renderPDFTranscript(self, view, filename='transcript.pdf',
857	student=None,
858	studentview=None,
859	note=None, signatures=None, sigs_in_footer=(),
860	show_scans=True, topMargin=1.5,
861	omit_fields=(),
862	tableheader=None,
863	no_passport=False):
864	"""Render pdf slip of a transcripts.
865	"""
866	portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
867	# XXX: tell what the different parameters mean
868	style = getSampleStyleSheet()
869	creator = self.getPDFCreator(student)
870	data = []
871	doc_title = view.label
872	author = '%s (%s)' % (view.request.principal.title,
873	view.request.principal.id)
874	footer_text = view.label.split('\n')
875	if len(footer_text) > 2:
876	# We can add a department in first line
877	footer_text = footer_text[1]
878	else:
879	# Only the first line is used for the footer
880	footer_text = footer_text[0]
881	if getattr(student, 'student_id', None) is not None:
882	footer_text = "%s - %s - " % (student.student_id, footer_text)
883
884	# Insert student data table
885	if student is not None:
886	#bd_translation = trans(_('Base Data'), portal_language)
887	#data.append(Paragraph(bd_translation, HEADING_STYLE))
888	data.append(render_student_data(
889	studentview, view.context,
890	omit_fields, lang=portal_language,
891	slipname=filename,
892	no_passport=no_passport))
893
894	transcript_data = view.context.getTranscriptData()
895	levels_data = transcript_data[0]
896
897	contextdata = []
898	f_label = trans(_('Course of Study:'), portal_language)
899	f_label = Paragraph(f_label, ENTRY1_STYLE)
900	f_text = formatted_text(view.context.certificate.longtitle)
901	f_text = Paragraph(f_text, ENTRY1_STYLE)
902	contextdata.append([f_label,f_text])
903
904	f_label = trans(_('Faculty:'), portal_language)
905	f_label = Paragraph(f_label, ENTRY1_STYLE)
906	f_text = formatted_text(
907	view.context.certificate.__parent__.__parent__.__parent__.longtitle)
908	f_text = Paragraph(f_text, ENTRY1_STYLE)
909	contextdata.append([f_label,f_text])
910
911	f_label = trans(_('Department:'), portal_language)
912	f_label = Paragraph(f_label, ENTRY1_STYLE)
913	f_text = formatted_text(
914	view.context.certificate.__parent__.__parent__.longtitle)
915	f_text = Paragraph(f_text, ENTRY1_STYLE)
916	contextdata.append([f_label,f_text])
917
918	f_label = trans(_('Entry Session:'), portal_language)
919	f_label = Paragraph(f_label, ENTRY1_STYLE)
920	f_text = formatted_text(
921	view.session_dict.get(view.context.entry_session))
922	f_text = Paragraph(f_text, ENTRY1_STYLE)
923	contextdata.append([f_label,f_text])
924
925	f_label = trans(_('Entry Mode:'), portal_language)
926	f_label = Paragraph(f_label, ENTRY1_STYLE)
927	f_text = formatted_text(view.studymode_dict.get(
928	view.context.entry_mode))
929	f_text = Paragraph(f_text, ENTRY1_STYLE)
930	contextdata.append([f_label,f_text])
931
932	f_label = trans(_('Cumulative GPA:'), portal_language)
933	f_label = Paragraph(f_label, ENTRY1_STYLE)
934	format_float = getUtility(IKofaUtils).format_float
935	cgpa = format_float(transcript_data[1], 3)
936	f_text = formatted_text('%s (%s)' % (
937	cgpa, self.getClassFromCGPA(transcript_data[1], student)[1]))
938	f_text = Paragraph(f_text, ENTRY1_STYLE)
939	contextdata.append([f_label,f_text])
940
941	contexttable = Table(contextdata,style=SLIP_STYLE)
942	data.append(contexttable)
943
944	transcripttables = render_transcript_data(
945	view, tableheader, levels_data, lang=portal_language)
946	data.extend(transcripttables)
947
948	# Insert signatures
949	# XXX: We are using only sigs_in_footer in waeup.kofa, so we
950	# do not have a test for the following lines.
951	if signatures and not sigs_in_footer:
952	data.append(Spacer(1, 20))
953	# Render one signature table per signature to
954	# get date and signature in line.
955	for signature in signatures:
956	signaturetables = get_signature_tables(signature)
957	data.append(signaturetables[0])
958
959	view.response.setHeader(
960	'Content-Type', 'application/pdf')
961	try:
962	pdf_stream = creator.create_pdf(
963	data, None, doc_title, author=author, footer=footer_text,
964	note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
965	except IOError:
966	view.flash(_('Error in image file.'))
967	return view.redirect(view.url(view.context))
968	return pdf_stream
969
970	def renderPDFCourseticketsOverview(
971	self, view, session, data, lecturers, orientation):
972	"""Render pdf slip of course tickets for a lecturer.
973	"""
974	filename = 'coursetickets_%s_%s_%s.pdf' % (
975	view.context.code, session, view.request.principal.id)
976	session = academic_sessions_vocab.getTerm(session).title
977	creator = getUtility(IPDFCreator, name=orientation)
978	style = getSampleStyleSheet()
979	pdf_data = [Paragraph(
980	translate(_('<b>Lecturer(s): ${a}</b>',
981	mapping = {'a':lecturers})), style["Normal"]),]
982	pdf_data += [Paragraph(
983	translate(_('<b>Credits: ${a}</b>',
984	mapping = {'a':view.context.credits})), style["Normal"]),]
985	# Not used in base package.
986	if data[1]:
987	pdf_data += [Paragraph(
988	translate(_('<b>${a}</b>',
989	mapping = {'a':data[1][0]})), style["Normal"]),]
990	pdf_data += [Paragraph(
991	translate(_('<b>${a}</b>',
992	mapping = {'a':data[1][1]})), style["Normal"]),]
993
994	pdf_data += [Paragraph(
995	translate(_('<b>Total Students: ${a}</b>',
996	mapping = {'a':data[1][2]})), style["Normal"]),]
997	pdf_data += [Paragraph(
998	translate(_('<b>Total Pass: ${a} (${b}%)</b>',
999	mapping = {'a':data[1][3],'b':data[1][4]})), style["Normal"]),]
1000	pdf_data += [Paragraph(
1001	translate(_('<b>Total Fail: ${a} (${b}%)</b>',
1002	mapping = {'a':data[1][5],'b':data[1][6]})), style["Normal"]),]
1003	pdf_data.append(Spacer(1, 20))
1004	pdf_data += [Table(data[0], style=CONTENT_STYLE)]
1005	doc_title = translate(_('${a} (${b}) - Academic Session ${d}',
1006	mapping = {'a':view.context.title,
1007	'b':view.context.code,
1008	'd':session}))
1009	footer_title = translate(_('${a} (${b}) - ${d}',
1010	mapping = {'a':view.context.title,
1011	'b':view.context.code,
1012	'd':session}))
1013	author = '%s (%s)' % (view.request.principal.title,
1014	view.request.principal.id)
1015	view.response.setHeader(
1016	'Content-Type', 'application/pdf')
1017	view.response.setHeader(
1018	'Content-Disposition:', 'attachment; filename="%s' % filename)
1019	pdf_stream = creator.create_pdf(
1020	pdf_data, None, doc_title, author, footer_title + ' -'
1021	)
1022	return pdf_stream
1023
1024	def warnCreditsOOR(self, studylevel, course=None):
1025	"""Return message if credits are out of range. In the base
1026	package only maximum credits is set.
1027	"""
1028	if course and studylevel.total_credits + course.credits > 50:
1029	return _('Maximum credits exceeded.')
1030	elif studylevel.total_credits > 50:
1031	return _('Maximum credits exceeded.')
1032	return
1033
1034	def getBedCoordinates(self, bedticket):
1035	"""Return descriptive bed coordinates.
1036	This method can be used to customize the `display_coordinates`
1037	property method in order to display a
1038	customary description of the bed space.
1039	"""
1040	return bedticket.bed_coordinates
1041
1042	def clearance_disabled_message(self, student):
1043	"""Render message if clearance is disabled.
1044	"""
1045	try:
1046	session_config = grok.getSite()[
1047	'configuration'][str(student.current_session)]
1048	except KeyError:
1049	return _('Session configuration object is not available.')
1050	if not session_config.clearance_enabled:
1051	return _('Clearance is disabled for this session.')
1052	return None
1053
1054	#: A dictionary which maps widget names to headlines. The headline
1055	#: is rendered in forms and on pdf slips above the respective
1056	#: display or input widget. There are no separating headlines
1057	#: in the base package.
1058	SEPARATORS_DICT = {}
1059
1060	#: A tuple containing names of file upload viewlets which are not shown
1061	#: on the `StudentClearanceManageFormPage`. Nothing is being skipped
1062	#: in the base package. This attribute makes only sense, if intermediate
1063	#: custom packages are being used, like we do for all Nigerian portals.
1064	SKIP_UPLOAD_VIEWLETS = ()
1065
1066	#: A tuple containing the names of registration states in which changing of
1067	#: passport pictures is allowed.
1068	PORTRAIT_CHANGE_STATES = (ADMITTED,)
1069
1070	#: A tuple containing all exporter names referring to students or
1071	#: subobjects thereof.
1072	STUDENT_EXPORTER_NAMES = ('students', 'studentstudycourses',
1073	'studentstudylevels', 'coursetickets',
1074	'studentpayments', 'studentunpaidpayments',
1075	'bedtickets', 'paymentsoverview',
1076	'studylevelsoverview', 'combocard', 'bursary')
1077
1078	#: A tuple containing all exporter names needed for backing
1079	#: up student data
1080	STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
1081	'studentstudylevels', 'coursetickets',
1082	'studentpayments', 'bedtickets')
1083
1084	#: A prefix used when generating new student ids. Each student id will
1085	#: start with this string. The default is 'K' for Kofa.
1086	STUDENT_ID_PREFIX = u'K'

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