source: main/waeup.kofa/trunk/src/waeup/kofa/students/utils.py @ 12991

Last change on this file since 12991 was 12971, checked in by Henrik Bettermann, 9 years ago

Add StudentUnpaidPaymentExporter? to export only unpaid tickets. This exporter is designed for finding and finally purging outdated payment ticket.
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File size: 39.5 KB
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1## $Id: utils.py 12971 2015-05-21 07:38:15Z 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 student section.
19"""
20import grok
21from time import time
22from reportlab.lib import colors
23from reportlab.lib.units import cm
24from reportlab.lib.pagesizes import A4
25from reportlab.lib.styles import getSampleStyleSheet
26from reportlab.platypus import Paragraph, Image, Table, Spacer
27from zope.event import notify
28from zope.schema.interfaces import ConstraintNotSatisfied
29from zope.component import getUtility, createObject
30from zope.formlib.form import setUpEditWidgets
31from zope.i18n import translate
32from waeup.kofa.interfaces import (
33    IExtFileStore, IKofaUtils, RETURNING, PAID, CLEARED,
34    academic_sessions_vocab)
35from waeup.kofa.interfaces import MessageFactory as _
36from waeup.kofa.students.interfaces import IStudentsUtils
37from waeup.kofa.students.workflow import ADMITTED
38from waeup.kofa.students.vocabularies import StudyLevelSource, MatNumNotInSource
39from waeup.kofa.browser.pdf import (
40    ENTRY1_STYLE, format_html, NOTE_STYLE, HEADING_STYLE,
41    get_signature_tables, get_qrcode)
42from waeup.kofa.browser.interfaces import IPDFCreator
43from waeup.kofa.utils.helpers import to_timezone
44
45SLIP_STYLE = [
46    ('VALIGN',(0,0),(-1,-1),'TOP'),
47    #('FONT', (0,0), (-1,-1), 'Helvetica', 11),
48    ]
49
50CONTENT_STYLE = [
51    ('VALIGN',(0,0),(-1,-1),'TOP'),
52    #('FONT', (0,0), (-1,-1), 'Helvetica', 8),
53    #('TEXTCOLOR',(0,0),(-1,0),colors.white),
54    #('BACKGROUND',(0,0),(-1,0),colors.black),
55    ('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
56    ('BOX', (0,0), (-1,-1), 1, colors.black),
57
58    ]
59
60FONT_SIZE = 10
61FONT_COLOR = 'black'
62
63def trans(text, lang):
64    # shortcut
65    return translate(text, 'waeup.kofa', target_language=lang)
66
67def 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    # Mainly for boolean values we need our customized
89    # localisation of the zope domain
90    text = translate(text, 'zope', target_language=lang)
91    text = text.replace('</div>', '<br /></div>')
92    tag1 = u'<font color="%s">' % (color)
93    return tag1 + u'%s</font>' % text
94
95def generate_student_id():
96    students = grok.getSite()['students']
97    new_id = students.unique_student_id
98    return new_id
99
100def set_up_widgets(view, ignore_request=False):
101    view.adapters = {}
102    view.widgets = setUpEditWidgets(
103        view.form_fields, view.prefix, view.context, view.request,
104        adapters=view.adapters, for_display=True,
105        ignore_request=ignore_request
106        )
107
108def render_student_data(studentview, context, omit_fields=(),
109                        lang='en', slipname=None):
110    """Render student table for an existing frame.
111    """
112    width, height = A4
113    set_up_widgets(studentview, ignore_request=True)
114    data_left = []
115    data_middle = []
116    style = getSampleStyleSheet()
117    img = getUtility(IExtFileStore).getFileByContext(
118        studentview.context, attr='passport.jpg')
119    if img is None:
120        from waeup.kofa.browser import DEFAULT_PASSPORT_IMAGE_PATH
121        img = open(DEFAULT_PASSPORT_IMAGE_PATH, 'rb')
122    doc_img = Image(img.name, width=4*cm, height=4*cm, kind='bound')
123    data_left.append([doc_img])
124    #data.append([Spacer(1, 12)])
125
126    f_label = trans(_('Name:'), lang)
127    f_label = Paragraph(f_label, ENTRY1_STYLE)
128    f_text = formatted_text(studentview.context.display_fullname)
129    f_text = Paragraph(f_text, ENTRY1_STYLE)
130    data_middle.append([f_label,f_text])
131
132    for widget in studentview.widgets:
133        if 'name' in widget.name:
134            continue
135        f_label = translate(
136            widget.label.strip(), 'waeup.kofa',
137            target_language=lang)
138        f_label = Paragraph('%s:' % f_label, ENTRY1_STYLE)
139        f_text = formatted_text(widget(), lang=lang)
140        f_text = Paragraph(f_text, ENTRY1_STYLE)
141        data_middle.append([f_label,f_text])
142
143    if getattr(studentview.context, 'certcode', None):
144        if not 'certificate' in omit_fields:
145            f_label = trans(_('Study Course:'), lang)
146            f_label = Paragraph(f_label, ENTRY1_STYLE)
147            f_text = formatted_text(
148                studentview.context['studycourse'].certificate.longtitle)
149            f_text = Paragraph(f_text, ENTRY1_STYLE)
150            data_middle.append([f_label,f_text])
151        if not 'department' in omit_fields:
152            f_label = trans(_('Department:'), lang)
153            f_label = Paragraph(f_label, ENTRY1_STYLE)
154            f_text = formatted_text(
155                studentview.context[
156                'studycourse'].certificate.__parent__.__parent__.longtitle,
157                )
158            f_text = Paragraph(f_text, ENTRY1_STYLE)
159            data_middle.append([f_label,f_text])
160        if not 'faculty' in omit_fields:
161            f_label = trans(_('Faculty:'), lang)
162            f_label = Paragraph(f_label, ENTRY1_STYLE)
163            f_text = formatted_text(
164                studentview.context[
165                'studycourse'].certificate.__parent__.__parent__.__parent__.longtitle,
166                )
167            f_text = Paragraph(f_text, ENTRY1_STYLE)
168            data_middle.append([f_label,f_text])
169        if not 'current_mode' in omit_fields:
170            studymodes_dict = getUtility(IKofaUtils).STUDY_MODES_DICT
171            sm = studymodes_dict[studentview.context.current_mode]
172            f_label = trans(_('Study Mode:'), lang)
173            f_label = Paragraph(f_label, ENTRY1_STYLE)
174            f_text = formatted_text(sm)
175            f_text = Paragraph(f_text, ENTRY1_STYLE)
176            data_middle.append([f_label,f_text])
177        if not 'entry_session' in omit_fields:
178            f_label = trans(_('Entry Session:'), lang)
179            f_label = Paragraph(f_label, ENTRY1_STYLE)
180            entry_session = studentview.context.entry_session
181            entry_session = academic_sessions_vocab.getTerm(entry_session).title
182            f_text = formatted_text(entry_session)
183            f_text = Paragraph(f_text, ENTRY1_STYLE)
184            data_middle.append([f_label,f_text])
185        # Requested by Uniben, does not really make sense
186        if not 'current_level' in omit_fields:
187            f_label = trans(_('Current Level:'), lang)
188            f_label = Paragraph(f_label, ENTRY1_STYLE)
189            current_level = studentview.context['studycourse'].current_level
190            studylevelsource = StudyLevelSource().factory
191            current_level = studylevelsource.getTitle(
192                studentview.context, current_level)
193            f_text = formatted_text(current_level)
194            f_text = Paragraph(f_text, ENTRY1_STYLE)
195            data_middle.append([f_label,f_text])
196        if not 'date_of_birth' in omit_fields:
197            f_label = trans(_('Date of Birth:'), lang)
198            f_label = Paragraph(f_label, ENTRY1_STYLE)
199            date_of_birth = studentview.context.date_of_birth
200            tz = getUtility(IKofaUtils).tzinfo
201            date_of_birth = to_timezone(date_of_birth, tz)
202            if date_of_birth is not None:
203                date_of_birth = date_of_birth.strftime("%d/%m/%Y")
204            f_text = formatted_text(date_of_birth)
205            f_text = Paragraph(f_text, ENTRY1_STYLE)
206            data_middle.append([f_label,f_text])
207
208    # append QR code to the right
209    if slipname:
210        url = studentview.url(context, slipname)
211        data_right = [[get_qrcode(url, width=70.0)]]
212        table_right = Table(data_right,style=SLIP_STYLE)
213    else:
214        table_right = None
215
216    table_left = Table(data_left,style=SLIP_STYLE)
217    table_middle = Table(data_middle,style=SLIP_STYLE, colWidths=[5*cm, 5*cm])
218    table = Table([[table_left, table_middle, table_right],],style=SLIP_STYLE)
219    return table
220
221def render_table_data(tableheader, tabledata, lang='en'):
222    """Render children table for an existing frame.
223    """
224    data = []
225    #data.append([Spacer(1, 12)])
226    line = []
227    style = getSampleStyleSheet()
228    for element in tableheader:
229        field = '<strong>%s</strong>' % formatted_text(element[0], lang=lang)
230        field = Paragraph(field, style["Normal"])
231        line.append(field)
232    data.append(line)
233    for ticket in tabledata:
234        line = []
235        for element in tableheader:
236              field = formatted_text(getattr(ticket,element[1],u' '))
237              field = Paragraph(field, style["Normal"])
238              line.append(field)
239        data.append(line)
240    table = Table(data,colWidths=[
241        element[2]*cm for element in tableheader], style=CONTENT_STYLE)
242    return table
243
244def render_transcript_data(view, tableheader, levels_data, lang='en'):
245    """Render children table for an existing frame.
246    """
247    data = []
248    style = getSampleStyleSheet()
249    for level in levels_data:
250        level_obj = level['level']
251        tickets = level['tickets_1'] + level['tickets_2'] + level['tickets_3']
252        headerline = []
253        tabledata = []
254        subheader = '%s %s, %s %s' % (
255            trans(_('Session'), lang),
256            view.session_dict[level_obj.level_session],
257            trans(_('Level'), lang),
258            view.level_dict[level_obj.level])
259        data.append(Paragraph(subheader, HEADING_STYLE))
260        for element in tableheader:
261            field = '<strong>%s</strong>' % formatted_text(element[0])
262            field = Paragraph(field, style["Normal"])
263            headerline.append(field)
264        tabledata.append(headerline)
265        for ticket in tickets:
266            ticketline = []
267            for element in tableheader:
268                  field = formatted_text(getattr(ticket,element[1],u' '))
269                  field = Paragraph(field, style["Normal"])
270                  ticketline.append(field)
271            tabledata.append(ticketline)
272        table = Table(tabledata,colWidths=[
273            element[2]*cm for element in tableheader], style=CONTENT_STYLE)
274        data.append(table)
275        sgpa = '%s: %s' % (trans('Sessional GPA (rectified)', lang), level['sgpa'])
276        data.append(Paragraph(sgpa, style["Normal"]))
277    return data
278
279def docs_as_flowables(view, lang='en'):
280    """Create reportlab flowables out of scanned docs.
281    """
282    # XXX: fix circular import problem
283    from waeup.kofa.browser.fileviewlets import FileManager
284    from waeup.kofa.browser import DEFAULT_IMAGE_PATH
285    style = getSampleStyleSheet()
286    data = []
287
288    # Collect viewlets
289    fm = FileManager(view.context, view.request, view)
290    fm.update()
291    if fm.viewlets:
292        sc_translation = trans(_('Scanned Documents'), lang)
293        data.append(Paragraph(sc_translation, HEADING_STYLE))
294        # Insert list of scanned documents
295        table_data = []
296        for viewlet in fm.viewlets:
297            if viewlet.file_exists:
298                # Show viewlet only if file exists
299                f_label = Paragraph(trans(viewlet.label, lang), ENTRY1_STYLE)
300                img_path = getattr(getUtility(IExtFileStore).getFileByContext(
301                    view.context, attr=viewlet.download_name), 'name', None)
302                #f_text = Paragraph(trans(_('(not provided)'),lang), ENTRY1_STYLE)
303                if img_path is None:
304                    pass
305                elif not img_path[-4:] in ('.jpg', '.JPG'):
306                    # reportlab requires jpg images, I think.
307                    f_text = Paragraph('%s (not displayable)' % (
308                        viewlet.title,), ENTRY1_STYLE)
309                else:
310                    f_text = Image(img_path, width=2*cm, height=1*cm, kind='bound')
311                table_data.append([f_label, f_text])
312        if table_data:
313            # safety belt; empty tables lead to problems.
314            data.append(Table(table_data, style=SLIP_STYLE))
315    return data
316
317class StudentsUtils(grok.GlobalUtility):
318    """A collection of methods subject to customization.
319    """
320    grok.implements(IStudentsUtils)
321
322    def getReturningData(self, student):
323        """ Define what happens after school fee payment
324        depending on the student's senate verdict.
325
326        In the base configuration current level is always increased
327        by 100 no matter which verdict has been assigned.
328        """
329        new_level = student['studycourse'].current_level + 100
330        new_session = student['studycourse'].current_session + 1
331        return new_session, new_level
332
333    def setReturningData(self, student):
334        """ Define what happens after school fee payment
335        depending on the student's senate verdict.
336
337        This method folllows the same algorithm as getReturningData but
338        it also sets the new values.
339        """
340        new_session, new_level = self.getReturningData(student)
341        try:
342            student['studycourse'].current_level = new_level
343        except ConstraintNotSatisfied:
344            # Do not change level if level exceeds the
345            # certificate's end_level.
346            pass
347        student['studycourse'].current_session = new_session
348        verdict = student['studycourse'].current_verdict
349        student['studycourse'].current_verdict = '0'
350        student['studycourse'].previous_verdict = verdict
351        return
352
353    def _getSessionConfiguration(self, session):
354        try:
355            return grok.getSite()['configuration'][str(session)]
356        except KeyError:
357            return None
358
359    def _isPaymentDisabled(self, p_session, category, student):
360        academic_session = self._getSessionConfiguration(p_session)
361        if category == 'schoolfee' and \
362            'sf_all' in academic_session.payment_disabled:
363            return True
364        return False
365
366    def samePaymentMade(self, student, category, p_item, p_session):
367        for key in student['payments'].keys():
368            ticket = student['payments'][key]
369            if ticket.p_state == 'paid' and\
370               ticket.p_category == category and \
371               ticket.p_item == p_item and \
372               ticket.p_session == p_session:
373                  return True
374        return False
375
376    def setPaymentDetails(self, category, student,
377            previous_session, previous_level):
378        """Create Payment object and set the payment data of a student for
379        the payment category specified.
380
381        """
382        p_item = u''
383        amount = 0.0
384        if previous_session:
385            if previous_session < student['studycourse'].entry_session:
386                return _('The previous session must not fall below '
387                         'your entry session.'), None
388            if category == 'schoolfee':
389                # School fee is always paid for the following session
390                if previous_session > student['studycourse'].current_session:
391                    return _('This is not a previous session.'), None
392            else:
393                if previous_session > student['studycourse'].current_session - 1:
394                    return _('This is not a previous session.'), None
395            p_session = previous_session
396            p_level = previous_level
397            p_current = False
398        else:
399            p_session = student['studycourse'].current_session
400            p_level = student['studycourse'].current_level
401            p_current = True
402        academic_session = self._getSessionConfiguration(p_session)
403        if academic_session == None:
404            return _(u'Session configuration object is not available.'), None
405        # Determine fee.
406        if category == 'schoolfee':
407            try:
408                certificate = student['studycourse'].certificate
409                p_item = certificate.code
410            except (AttributeError, TypeError):
411                return _('Study course data are incomplete.'), None
412            if previous_session:
413                # Students can pay for previous sessions in all
414                # workflow states.  Fresh students are excluded by the
415                # update method of the PreviousPaymentAddFormPage.
416                if previous_level == 100:
417                    amount = getattr(certificate, 'school_fee_1', 0.0)
418                else:
419                    amount = getattr(certificate, 'school_fee_2', 0.0)
420            else:
421                if student.state == CLEARED:
422                    amount = getattr(certificate, 'school_fee_1', 0.0)
423                elif student.state == RETURNING:
424                    # In case of returning school fee payment the
425                    # payment session and level contain the values of
426                    # the session the student has paid for. Payment
427                    # session is always next session.
428                    p_session, p_level = self.getReturningData(student)
429                    academic_session = self._getSessionConfiguration(p_session)
430                    if academic_session == None:
431                        return _(
432                            u'Session configuration object is not available.'
433                            ), None
434                    amount = getattr(certificate, 'school_fee_2', 0.0)
435                elif student.is_postgrad and student.state == PAID:
436                    # Returning postgraduate students also pay for the
437                    # next session but their level always remains the
438                    # same.
439                    p_session += 1
440                    academic_session = self._getSessionConfiguration(p_session)
441                    if academic_session == None:
442                        return _(
443                            u'Session configuration object is not available.'
444                            ), None
445                    amount = getattr(certificate, 'school_fee_2', 0.0)
446        elif category == 'clearance':
447            try:
448                p_item = student['studycourse'].certificate.code
449            except (AttributeError, TypeError):
450                return _('Study course data are incomplete.'), None
451            amount = academic_session.clearance_fee
452        elif category == 'bed_allocation':
453            p_item = self.getAccommodationDetails(student)['bt']
454            amount = academic_session.booking_fee
455        elif category == 'hostel_maintenance':
456            amount = 0.0
457            bedticket = student['accommodation'].get(
458                str(student.current_session), None)
459            if bedticket:
460                p_item = bedticket.bed_coordinates
461                if bedticket.bed.__parent__.maint_fee > 0:
462                    amount = bedticket.bed.__parent__.maint_fee
463                else:
464                    # fallback
465                    amount = academic_session.maint_fee
466            else:
467                # Should not happen because this is already checked
468                # in the browser module, but anyway ...
469                portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
470                p_item = trans(_('no bed allocated'), portal_language)
471        elif category == 'transcript':
472            amount = academic_session.transcript_fee
473        if amount in (0.0, None):
474            return _('Amount could not be determined.'), None
475        if self.samePaymentMade(student, category, p_item, p_session):
476            return _('This type of payment has already been made.'), None
477        if self._isPaymentDisabled(p_session, category, student):
478            return _('Payment temporarily disabled.'), None
479        payment = createObject(u'waeup.StudentOnlinePayment')
480        timestamp = ("%d" % int(time()*10000))[1:]
481        payment.p_id = "p%s" % timestamp
482        payment.p_category = category
483        payment.p_item = p_item
484        payment.p_session = p_session
485        payment.p_level = p_level
486        payment.p_current = p_current
487        payment.amount_auth = amount
488        return None, payment
489
490    def setBalanceDetails(self, category, student,
491            balance_session, balance_level, balance_amount):
492        """Create Payment object and set the payment data of a student for.
493
494        """
495        p_item = u'Balance'
496        p_session = balance_session
497        p_level = balance_level
498        p_current = False
499        amount = balance_amount
500        academic_session = self._getSessionConfiguration(p_session)
501        if academic_session == None:
502            return _(u'Session configuration object is not available.'), None
503        if amount in (0.0, None) or amount < 0:
504            return _('Amount must be greater than 0.'), None
505        if self.samePaymentMade(student, 'balance', p_item, p_session):
506            return _('This type of payment has already been made.'), None
507        payment = createObject(u'waeup.StudentOnlinePayment')
508        timestamp = ("%d" % int(time()*10000))[1:]
509        payment.p_id = "p%s" % timestamp
510        payment.p_category = category
511        payment.p_item = p_item
512        payment.p_session = p_session
513        payment.p_level = p_level
514        payment.p_current = p_current
515        payment.amount_auth = amount
516        return None, payment
517
518    def increaseMatricInteger(self, student):
519        """Increase counter for matric numbers.
520
521        This counter can be a centrally stored attribute or an attribute of
522        faculties, departments or certificates. In the base package the counter
523        is as an attribute of the site configuration object.
524        """
525        grok.getSite()['configuration'].next_matric_integer += 1
526        return
527
528    def constructMatricNumber(self, student):
529        """Fetch the matric number counter which fits the student and
530        construct the new matric number of the student.
531
532        In the base package the counter is returned which is as an attribute
533        of the site configuration object.
534        """
535        next_integer = grok.getSite()['configuration'].next_matric_integer
536        if next_integer == 0:
537            return _('Matriculation number cannot be set.'), None
538        return None, unicode(next_integer)
539
540    def setMatricNumber(self, student):
541        """Set matriculation number of student.
542
543        If the student's matric number is unset a new matric number is
544        constructed according to the matriculation number construction rules
545        defined in the constructMatricNumber method. The new matric number is
546        set, the students catalog updated. The corresponding matric number
547        counter is increased by one.
548
549        This method is tested but not used in the base package. It can
550        be used in custom packages by adding respective views
551        and by customizing increaseMatricInteger and constructMatricNumber
552        according to the university's matriculation number construction rules.
553
554        The method can be disabled by setting the counter to zero.
555        """
556        if student.matric_number is not None:
557            return _('Matriculation number already set.'), None
558        if student.certcode is None:
559            return _('No certificate assigned.'), None
560        error, matric_number = self.constructMatricNumber(student)
561        if error:
562            return error, None
563        try:
564            student.matric_number = matric_number
565        except MatNumNotInSource:
566            return _('Matriculation number exists.'), None
567        notify(grok.ObjectModifiedEvent(student))
568        self.increaseMatricInteger(student)
569        return None, matric_number
570
571    def getAccommodationDetails(self, student):
572        """Determine the accommodation data of a student.
573        """
574        d = {}
575        d['error'] = u''
576        hostels = grok.getSite()['hostels']
577        d['booking_session'] = hostels.accommodation_session
578        d['allowed_states'] = hostels.accommodation_states
579        d['startdate'] = hostels.startdate
580        d['enddate'] = hostels.enddate
581        d['expired'] = hostels.expired
582        # Determine bed type
583        studycourse = student['studycourse']
584        certificate = getattr(studycourse,'certificate',None)
585        entry_session = studycourse.entry_session
586        current_level = studycourse.current_level
587        if None in (entry_session, current_level, certificate):
588            return d
589        end_level = certificate.end_level
590        if current_level == 10:
591            bt = 'pr'
592        elif entry_session == grok.getSite()['hostels'].accommodation_session:
593            bt = 'fr'
594        elif current_level >= end_level:
595            bt = 'fi'
596        else:
597            bt = 're'
598        if student.sex == 'f':
599            sex = 'female'
600        else:
601            sex = 'male'
602        special_handling = 'regular'
603        d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
604        return d
605
606    def selectBed(self, available_beds):
607        """Select a bed from a list of available beds.
608
609        In the base configuration we select the first bed found,
610        but can also randomize the selection if we like.
611        """
612        return available_beds[0]
613
614    def _admissionText(self, student, portal_language):
615        inst_name = grok.getSite()['configuration'].name
616        text = trans(_(
617            'This is to inform you that you have been provisionally'
618            ' admitted into ${a} as follows:', mapping = {'a': inst_name}),
619            portal_language)
620        return text
621
622    def renderPDFAdmissionLetter(self, view, student=None, omit_fields=(),
623                                 pre_text=None, post_text=None,):
624        """Render pdf admission letter.
625        """
626        if student is None:
627            return
628        style = getSampleStyleSheet()
629        creator = self.getPDFCreator(student)
630        portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
631        data = []
632        doc_title = view.label
633        author = '%s (%s)' % (view.request.principal.title,
634                              view.request.principal.id)
635        footer_text = view.label.split('\n')
636        if len(footer_text) > 1:
637            # We can add a department in first line
638            footer_text = footer_text[1]
639        else:
640            # Only the first line is used for the footer
641            footer_text = footer_text[0]
642        if getattr(student, 'student_id', None) is not None:
643            footer_text = "%s - %s - " % (student.student_id, footer_text)
644
645        # Text before student data
646        if pre_text is None:
647            html = format_html(self._admissionText(student, portal_language))
648        else:
649            html = format_html(pre_text)
650        if html:
651            data.append(Paragraph(html, NOTE_STYLE))
652            data.append(Spacer(1, 20))
653
654        # Student data
655        data.append(render_student_data(view, student,
656                    omit_fields, lang=portal_language,
657                    slipname='admission_slip.pdf'))
658
659        # Text after student data
660        data.append(Spacer(1, 20))
661        if post_text is None:
662            datelist = student.history.messages[0].split()[0].split('-')
663            creation_date = u'%s/%s/%s' % (datelist[2], datelist[1], datelist[0])
664            post_text = trans(_(
665                'Your Kofa student record was created on ${a}.',
666                mapping = {'a': creation_date}),
667                portal_language)
668        #html = format_html(post_text)
669        #data.append(Paragraph(html, NOTE_STYLE))
670
671        # Create pdf stream
672        view.response.setHeader(
673            'Content-Type', 'application/pdf')
674        pdf_stream = creator.create_pdf(
675            data, None, doc_title, author=author, footer=footer_text,
676            note=post_text)
677        return pdf_stream
678
679    def getPDFCreator(self, context):
680        """Get a pdf creator suitable for `context`.
681
682        The default implementation always returns the default creator.
683        """
684        return getUtility(IPDFCreator)
685
686    def renderPDF(self, view, filename='slip.pdf', student=None,
687                  studentview=None,
688                  tableheader=[], tabledata=[],
689                  note=None, signatures=None, sigs_in_footer=(),
690                  show_scans=True, topMargin=1.5,
691                  omit_fields=()):
692        """Render pdf slips for various pages.
693        """
694        portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
695        # XXX: tell what the different parameters mean
696        style = getSampleStyleSheet()
697        creator = self.getPDFCreator(student)
698        data = []
699        doc_title = view.label
700        author = '%s (%s)' % (view.request.principal.title,
701                              view.request.principal.id)
702        footer_text = view.label.split('\n')
703        if len(footer_text) > 2:
704            # We can add a department in first line
705            footer_text = footer_text[1]
706        else:
707            # Only the first line is used for the footer
708            footer_text = footer_text[0]
709        if getattr(student, 'student_id', None) is not None:
710            footer_text = "%s - %s - " % (student.student_id, footer_text)
711
712        # Insert student data table
713        if student is not None:
714            bd_translation = trans(_('Base Data'), portal_language)
715            data.append(Paragraph(bd_translation, HEADING_STYLE))
716            data.append(render_student_data(
717                studentview, view.context, omit_fields, lang=portal_language,
718                slipname=filename))
719
720        # Insert widgets
721        if view.form_fields:
722            data.append(Paragraph(view.title, HEADING_STYLE))
723            separators = getattr(self, 'SEPARATORS_DICT', {})
724            table = creator.getWidgetsTable(
725                view.form_fields, view.context, None, lang=portal_language,
726                separators=separators)
727            data.append(table)
728
729        # Insert scanned docs
730        if show_scans:
731            data.extend(docs_as_flowables(view, portal_language))
732
733        # Insert history
734        if filename.startswith('clearance'):
735            hist_translation = trans(_('Workflow History'), portal_language)
736            data.append(Paragraph(hist_translation, HEADING_STYLE))
737            data.extend(creator.fromStringList(student.history.messages))
738
739        # Insert content tables (optionally on second page)
740        if hasattr(view, 'tabletitle'):
741            for i in range(len(view.tabletitle)):
742                if tabledata[i] and tableheader[i]:
743                    #data.append(PageBreak())
744                    #data.append(Spacer(1, 20))
745                    data.append(Paragraph(view.tabletitle[i], HEADING_STYLE))
746                    data.append(Spacer(1, 8))
747                    contenttable = render_table_data(tableheader[i],tabledata[i])
748                    data.append(contenttable)
749
750        # Insert signatures
751        # XXX: We are using only sigs_in_footer in waeup.kofa, so we
752        # do not have a test for the following lines.
753        if signatures and not sigs_in_footer:
754            data.append(Spacer(1, 20))
755            # Render one signature table per signature to
756            # get date and signature in line.
757            for signature in signatures:
758                signaturetables = get_signature_tables(signature)
759                data.append(signaturetables[0])
760
761        view.response.setHeader(
762            'Content-Type', 'application/pdf')
763        try:
764            pdf_stream = creator.create_pdf(
765                data, None, doc_title, author=author, footer=footer_text,
766                note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
767        except IOError:
768            view.flash('Error in image file.')
769            return view.redirect(view.url(view.context))
770        return pdf_stream
771
772    gpa_boundaries = ((1, 'Fail'),
773                      (1.5, 'Pass'),
774                      (2.4, '3rd Class'),
775                      (3.5, '2nd Class Lower'),
776                      (4.5, '2nd Class Upper'),
777                      (5, '1st Class'))
778
779    def getClassFromCGPA(self, gpa):
780        if gpa < self.gpa_boundaries[0][0]:
781            return 0, self.gpa_boundaries[0][1]
782        if gpa < self.gpa_boundaries[1][0]:
783            return 1, self.gpa_boundaries[1][1]
784        if gpa < self.gpa_boundaries[2][0]:
785            return 2, self.gpa_boundaries[2][1]
786        if gpa < self.gpa_boundaries[3][0]:
787            return 3, self.gpa_boundaries[3][1]
788        if gpa < self.gpa_boundaries[4][0]:
789            return 4, self.gpa_boundaries[4][1]
790        if gpa <= self.gpa_boundaries[5][0]:
791            return 5, self.gpa_boundaries[5][1]
792        return 'N/A'
793
794    def renderPDFTranscript(self, view, filename='transcript.pdf',
795                  student=None,
796                  studentview=None,
797                  note=None, signatures=None, sigs_in_footer=(),
798                  show_scans=True, topMargin=1.5,
799                  omit_fields=(),
800                  tableheader=None):
801        """Render pdf slips for transcript.
802        """
803        portal_language = getUtility(IKofaUtils).PORTAL_LANGUAGE
804        # XXX: tell what the different parameters mean
805        style = getSampleStyleSheet()
806        creator = self.getPDFCreator(student)
807        data = []
808        doc_title = view.label
809        author = '%s (%s)' % (view.request.principal.title,
810                              view.request.principal.id)
811        footer_text = view.label.split('\n')
812        if len(footer_text) > 2:
813            # We can add a department in first line
814            footer_text = footer_text[1]
815        else:
816            # Only the first line is used for the footer
817            footer_text = footer_text[0]
818        if getattr(student, 'student_id', None) is not None:
819            footer_text = "%s - %s - " % (student.student_id, footer_text)
820
821        # Insert student data table
822        if student is not None:
823            #bd_translation = trans(_('Base Data'), portal_language)
824            #data.append(Paragraph(bd_translation, HEADING_STYLE))
825            data.append(render_student_data(
826                studentview, view.context,
827                omit_fields, lang=portal_language,
828                slipname=filename))
829
830        transcript_data = view.context.getTranscriptData()
831        levels_data = transcript_data[0]
832        gpa = transcript_data[1]
833
834        contextdata = []
835        f_label = trans(_('Course of Study:'), portal_language)
836        f_label = Paragraph(f_label, ENTRY1_STYLE)
837        f_text = formatted_text(view.context.certificate.longtitle)
838        f_text = Paragraph(f_text, ENTRY1_STYLE)
839        contextdata.append([f_label,f_text])
840
841        f_label = trans(_('Faculty:'), portal_language)
842        f_label = Paragraph(f_label, ENTRY1_STYLE)
843        f_text = formatted_text(
844            view.context.certificate.__parent__.__parent__.__parent__.longtitle)
845        f_text = Paragraph(f_text, ENTRY1_STYLE)
846        contextdata.append([f_label,f_text])
847
848        f_label = trans(_('Department:'), portal_language)
849        f_label = Paragraph(f_label, ENTRY1_STYLE)
850        f_text = formatted_text(
851            view.context.certificate.__parent__.__parent__.longtitle)
852        f_text = Paragraph(f_text, ENTRY1_STYLE)
853        contextdata.append([f_label,f_text])
854
855        f_label = trans(_('Entry Session:'), portal_language)
856        f_label = Paragraph(f_label, ENTRY1_STYLE)
857        f_text = formatted_text(
858            view.session_dict.get(view.context.entry_session))
859        f_text = Paragraph(f_text, ENTRY1_STYLE)
860        contextdata.append([f_label,f_text])
861
862        f_label = trans(_('Entry Mode:'), portal_language)
863        f_label = Paragraph(f_label, ENTRY1_STYLE)
864        f_text = formatted_text(view.studymode_dict.get(
865            view.context.entry_mode))
866        f_text = Paragraph(f_text, ENTRY1_STYLE)
867        contextdata.append([f_label,f_text])
868
869        f_label = trans(_('Cumulative GPA:'), portal_language)
870        f_label = Paragraph(f_label, ENTRY1_STYLE)
871        f_text = formatted_text('%s (%s)' % (gpa, self.getClassFromCGPA(gpa)[1]))
872        f_text = Paragraph(f_text, ENTRY1_STYLE)
873        contextdata.append([f_label,f_text])
874
875        contexttable = Table(contextdata,style=SLIP_STYLE)
876        data.append(contexttable)
877
878        transcripttables = render_transcript_data(
879            view, tableheader, levels_data, lang=portal_language)
880        data.extend(transcripttables)
881
882        # Insert signatures
883        # XXX: We are using only sigs_in_footer in waeup.kofa, so we
884        # do not have a test for the following lines.
885        if signatures and not sigs_in_footer:
886            data.append(Spacer(1, 20))
887            # Render one signature table per signature to
888            # get date and signature in line.
889            for signature in signatures:
890                signaturetables = get_signature_tables(signature)
891                data.append(signaturetables[0])
892
893        view.response.setHeader(
894            'Content-Type', 'application/pdf')
895        try:
896            pdf_stream = creator.create_pdf(
897                data, None, doc_title, author=author, footer=footer_text,
898                note=note, sigs_in_footer=sigs_in_footer, topMargin=topMargin)
899        except IOError:
900            view.flash(_('Error in image file.'))
901            return view.redirect(view.url(view.context))
902        return pdf_stream
903
904    def maxCredits(self, studylevel):
905        """Return maximum credits.
906
907        In some universities maximum credits is not constant, it
908        depends on the student's study level. Set maxCredits None or 0
909        in order to deactivate the limitation.
910        """
911        return 50
912
913    def maxCreditsExceeded(self, studylevel, course):
914        max_credits = self.maxCredits(studylevel)
915        if max_credits and \
916            studylevel.total_credits + course.credits > max_credits:
917            return max_credits
918        return 0
919
920    def getBedCoordinates(self, bedticket):
921        """Return bed coordinates.
922
923        This method can be used to customize the display_coordinates
924        property method.
925        """
926        return bedticket.bed_coordinates
927
928    def clearance_disabled_message(self, student):
929        try:
930            session_config = grok.getSite()[
931                'configuration'][str(student.current_session)]
932        except KeyError:
933            return _('Session configuration object is not available.')
934        if not session_config.clearance_enabled:
935            return _('Clearance is disabled for this session.')
936        return None
937
938    VERDICTS_DICT = {
939        '0': _('(not yet)'),
940        'A': 'Successful student',
941        'B': 'Student with carryover courses',
942        'C': 'Student on probation',
943        }
944
945    SEPARATORS_DICT = {
946        }
947
948    SKIP_UPLOAD_VIEWLETS = ()
949
950    PWCHANGE_STATES = (ADMITTED,)
951
952    #: A tuple containing all exporter names referring to students or
953    #: subobjects thereof.
954    STUDENT_EXPORTER_NAMES = ('students', 'studentstudycourses',
955            'studentstudylevels', 'coursetickets',
956            'studentpayments', 'studentunpaidpayments',
957            'bedtickets', 'paymentsoverview',
958            'studylevelsoverview', 'combocard', 'bursary')
959
960    #: A tuple containing all exporter names needed for backing
961    #: up student data
962    STUDENT_BACKUP_EXPORTER_NAMES = ('students', 'studentstudycourses',
963            'studentstudylevels', 'coursetickets',
964            'studentpayments', 'bedtickets')
965
966    #: A prefix used when generating new student ids. Each student id will
967    #: start with this string. The default is 'K' for ``Kofa``.
968    STUDENT_ID_PREFIX = u'K'
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