| 1 | ## $Id: studylevel.py 15876 2019-12-09 16:18:49Z henrik $ |
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| 2 | ## |
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| 3 | ## Copyright (C) 2012 Uli Fouquet & Henrik Bettermann |
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| 4 | ## This program is free software; you can redistribute it and/or modify |
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| 5 | ## it under the terms of the GNU General Public License as published by |
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| 6 | ## the Free Software Foundation; either version 2 of the License, or |
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| 7 | ## (at your option) any later version. |
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| 8 | ## |
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| 9 | ## This program is distributed in the hope that it will be useful, |
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| 10 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 12 | ## GNU General Public License for more details. |
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| 13 | ## |
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| 14 | ## You should have received a copy of the GNU General Public License |
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| 15 | ## along with this program; if not, write to the Free Software |
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| 16 | ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 17 | ## |
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| 18 | """ |
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| 19 | Container which holds the data of a student study level |
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| 20 | and contains the course tickets. |
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| 21 | """ |
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| 22 | import grok |
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| 23 | import pytz |
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| 24 | from datetime import datetime |
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| 25 | from zope.component.interfaces import IFactory |
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| 26 | from zope.component import createObject |
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| 27 | from zope.interface import implementedBy |
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| 28 | from waeup.kofa.utils.helpers import attrs_to_fields |
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| 29 | from waeup.kofa.interfaces import RETURNING, VALIDATED, REGISTERED, PAID |
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| 30 | from waeup.kofa.students.browser import TicketError |
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| 31 | from waeup.kofa.students.studylevel import ( |
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| 32 | StudentStudyLevel, CourseTicket, |
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| 33 | CourseTicketFactory, StudentStudyLevelFactory) |
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| 34 | from waeup.kofa.students.interfaces import IStudentNavigation, ICourseTicket |
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| 35 | from waeup.aaue.students.interfaces import ( |
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| 36 | ICustomStudentStudyLevel, ICustomCourseTicket) |
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| 37 | from waeup.aaue.students.utils import MINIMUM_UNITS_THRESHOLD |
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| 38 | from waeup.aaue.interfaces import MessageFactory as _ |
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| 39 | |
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| 40 | |
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| 41 | class CustomStudentStudyLevel(StudentStudyLevel): |
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| 42 | """This is a container for course tickets. |
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| 43 | """ |
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| 44 | grok.implements(ICustomStudentStudyLevel, IStudentNavigation) |
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| 45 | grok.provides(ICustomStudentStudyLevel) |
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| 46 | |
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| 47 | @property |
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| 48 | def total_credits_s1(self): |
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| 49 | total = 0 |
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| 50 | for ticket in self.values(): |
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| 51 | if ticket.semester == 1 and not ticket.outstanding: |
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| 52 | total += ticket.credits |
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| 53 | return total |
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| 54 | |
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| 55 | @property |
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| 56 | def total_credits_s2(self): |
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| 57 | total = 0 |
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| 58 | for ticket in self.values(): |
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| 59 | if ticket.semester == 2 and not ticket.outstanding: |
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| 60 | total += ticket.credits |
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| 61 | return total |
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| 62 | |
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| 63 | @property |
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| 64 | def gpa_params(self): |
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| 65 | """Calculate gpa parameters for this level. |
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| 66 | """ |
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| 67 | credits_weighted = 0.0 |
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| 68 | credits_counted = 0 |
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| 69 | level_gpa = 0.0 |
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| 70 | for ticket in self.values(): |
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| 71 | if ticket.total_score is not None: |
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| 72 | credits_counted += ticket.credits |
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| 73 | credits_weighted += ticket.credits * ticket.weight |
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| 74 | if credits_counted: |
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| 75 | level_gpa = credits_weighted/credits_counted |
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| 76 | # Override level_gpa if value has been imported |
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| 77 | imported_gpa = getattr(self, 'imported_gpa', None) |
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| 78 | if imported_gpa: |
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| 79 | level_gpa = imported_gpa |
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| 80 | return level_gpa, credits_counted, credits_weighted |
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| 81 | |
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| 82 | @property |
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| 83 | def gpa_params_rectified(self): |
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| 84 | return self.gpa_params |
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| 85 | |
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| 86 | @property |
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| 87 | def passed_params(self): |
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| 88 | """Determine the number and credits of passed and failed courses. |
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| 89 | This method is used for level reports. |
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| 90 | """ |
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| 91 | passed = failed = 0 |
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| 92 | courses_failed = '' |
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| 93 | credits_failed = 0 |
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| 94 | credits_passed = 0 |
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| 95 | courses_not_taken = '' |
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| 96 | for ticket in self.values(): |
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| 97 | if ticket.total_score is not None: |
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| 98 | if ticket.total_score < ticket.passmark: |
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| 99 | failed += 1 |
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| 100 | credits_failed += ticket.credits |
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| 101 | if ticket.mandatory: |
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| 102 | courses_failed += 'm_%s_m ' % ticket.code |
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| 103 | else: |
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| 104 | courses_failed += '%s ' % ticket.code |
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| 105 | else: |
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| 106 | passed += 1 |
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| 107 | credits_passed += ticket.credits |
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| 108 | else: |
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| 109 | courses_not_taken += '%s ' % ticket.code |
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| 110 | if not len(courses_failed): |
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| 111 | courses_failed = 'Nil' |
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| 112 | if not len(courses_not_taken): |
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| 113 | courses_not_taken = 'Nil' |
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| 114 | return (passed, failed, credits_passed, |
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| 115 | credits_failed, courses_failed, |
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| 116 | courses_not_taken) |
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| 117 | |
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| 118 | @property |
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| 119 | def course_registration_forbidden(self): |
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| 120 | #fac_dep_paid = True |
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| 121 | #if self.student.entry_session >= 2016: |
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| 122 | # fac_dep_paid = False |
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| 123 | # for ticket in self.student['payments'].values(): |
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| 124 | # if ticket.p_category == 'fac_dep' and \ |
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| 125 | # ticket.p_session == self.level_session and \ |
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| 126 | # ticket.p_state == 'paid': |
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| 127 | # fac_dep_paid = True |
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| 128 | # continue |
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| 129 | #if not fac_dep_paid: |
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| 130 | # return _("Please pay faculty and departmental dues first.") |
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| 131 | |
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| 132 | |
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| 133 | ###################################################### |
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| 134 | # Temporarily disable ug_ft course registration |
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| 135 | #if self.student.current_mode == 'ug_ft': |
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| 136 | # return _("Course registration has been disabled.") |
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| 137 | ###################################################### |
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| 138 | |
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| 139 | |
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| 140 | restitution_paid = True |
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| 141 | if self.student.current_session == 2016 \ |
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| 142 | and self.student.current_mode in ('ug_ft', 'dp_ft') \ |
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| 143 | and not self.student.is_fresh: |
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| 144 | restitution_paid = False |
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| 145 | for ticket in self.student['payments'].values(): |
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| 146 | if ticket.p_category == 'restitution' and \ |
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| 147 | ticket.p_session == self.level_session and \ |
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| 148 | ticket.p_state == 'paid': |
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| 149 | restitution_paid = True |
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| 150 | continue |
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| 151 | if not restitution_paid: |
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| 152 | return _("Please pay restitution fee first.") |
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| 153 | #if self.student.is_fresh: |
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| 154 | # return |
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| 155 | try: |
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| 156 | academic_session = grok.getSite()['configuration'][ |
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| 157 | str(self.level_session)] |
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| 158 | if self.student.is_postgrad: |
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| 159 | deadline = academic_session.coursereg_deadline_pg |
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| 160 | elif self.student.current_mode.startswith('dp'): |
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| 161 | deadline = academic_session.coursereg_deadline_dp |
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| 162 | elif self.student.current_mode in ( |
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| 163 | 'ug_pt', 'de_pt', 'de_dsh', 'ug_dsh'): |
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| 164 | deadline = academic_session.coursereg_deadline_pt |
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| 165 | elif self.student.current_mode == 'found': |
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| 166 | deadline = academic_session.coursereg_deadline_found |
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| 167 | elif self.student.current_mode == 'bridge': |
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| 168 | deadline = academic_session.coursereg_deadline_bridge |
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| 169 | else: |
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| 170 | deadline = academic_session.coursereg_deadline |
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| 171 | except (TypeError, KeyError): |
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| 172 | return |
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| 173 | if not deadline or deadline > datetime.now(pytz.utc): |
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| 174 | return |
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| 175 | if self.student.is_postgrad: |
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| 176 | lcrfee = academic_session.late_pg_registration_fee |
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| 177 | else: |
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| 178 | lcrfee = academic_session.late_registration_fee |
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| 179 | if not lcrfee: |
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| 180 | return _("Course registration has been disabled.") |
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| 181 | if len(self.student['payments']): |
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| 182 | for ticket in self.student['payments'].values(): |
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| 183 | if ticket.p_category == 'late_registration' and \ |
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| 184 | ticket.p_session == self.level_session and \ |
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| 185 | ticket.p_state == 'paid': |
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| 186 | return |
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| 187 | return _("Course registration has ended. " |
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| 188 | "Please pay the late registration fee.") |
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| 189 | |
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| 190 | # only AAUE |
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| 191 | @property |
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| 192 | def remark(self): |
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| 193 | certificate = getattr(self.__parent__,'certificate',None) |
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| 194 | end_level = getattr(certificate, 'end_level', None) |
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| 195 | study_mode = getattr(certificate, 'study_mode', None) |
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| 196 | is_dp = False |
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| 197 | if study_mode and study_mode.startswith('dp'): |
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| 198 | is_dp = True |
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| 199 | failed_limit = 1.5 |
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| 200 | if self.student.entry_session < 2013: |
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| 201 | failed_limit = 1.0 |
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| 202 | # final level student remark |
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| 203 | if end_level and self.level >= end_level: |
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| 204 | if self.level > end_level: |
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| 205 | # spill-over level |
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| 206 | if self.gpa_params[1] == 0: |
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| 207 | # no credits taken |
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| 208 | return 'NER' |
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| 209 | elif self.gpa_params[1] < MINIMUM_UNITS_THRESHOLD: |
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| 210 | # credits taken below limit |
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| 211 | return 'NER' |
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| 212 | if self.level_verdict in ('FRNS', 'NER', 'NYV'): |
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| 213 | return self.level_verdict |
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| 214 | if '_m' in self.passed_params[4]: |
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| 215 | return 'FRNS' |
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| 216 | if not self.cumulative_params[0]: |
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| 217 | return 'FRNS' |
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| 218 | if len(self.passed_params[5]) \ |
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| 219 | and not self.passed_params[5] == 'Nil': |
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| 220 | return 'FRNS' |
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| 221 | if self.cumulative_params[1] < 60: |
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| 222 | return 'FRNS' |
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| 223 | if self.cumulative_params[0] < failed_limit: |
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| 224 | return 'Fail' |
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| 225 | dummy, repeat = divmod(self.level, 100) |
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| 226 | if self.cumulative_params[0] < 5.1 and repeat == 20: |
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| 227 | # Irrespective of the CGPA of a student, if the He/She has |
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| 228 | # 3rd Extension, such student will be graduated with a "Pass". |
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| 229 | return 'Pass' |
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| 230 | if self.cumulative_params[0] < 1.5: |
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| 231 | if is_dp: |
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| 232 | return 'Fail' |
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| 233 | return 'Pass' |
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| 234 | if self.cumulative_params[0] < 2.4: |
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| 235 | if is_dp: |
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| 236 | return 'Pass' |
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| 237 | return '3s_rd_s' |
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| 238 | if self.cumulative_params[0] < 3.5: |
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| 239 | if is_dp: |
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| 240 | return 'Merit' |
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| 241 | return '2s_2_s' |
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| 242 | if self.cumulative_params[0] < 4.5: |
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| 243 | if is_dp: |
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| 244 | return 'Credit' |
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| 245 | return '2s_1_s' |
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| 246 | if self.cumulative_params[0] < 5.1: |
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| 247 | if is_dp: |
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| 248 | return 'Distinction' |
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| 249 | return '1s_st_s' |
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| 250 | return 'N/A' |
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| 251 | # returning student remark |
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| 252 | if self.level_verdict in ('FRNS', 'NER', 'NYV'): |
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| 253 | return 'Probation' |
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| 254 | if self.level_verdict == 'D': |
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| 255 | return 'Withdrawn' |
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| 256 | if self.gpa_params[1] == 0: |
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| 257 | # no credits taken |
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| 258 | return 'NER' |
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| 259 | if self.gpa_params[1] < MINIMUM_UNITS_THRESHOLD: |
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| 260 | # credits taken below limit |
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| 261 | return 'Probation' |
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| 262 | if self.cumulative_params[0] < failed_limit: |
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| 263 | return 'Probation' |
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| 264 | if self.cumulative_params[0] < 5.1: |
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| 265 | return 'Proceed' |
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| 266 | return 'N/A' |
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| 267 | |
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| 268 | def _schoolfeePaymentMade(self): |
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| 269 | if len(self.student['payments']): |
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| 270 | for ticket in self.student['payments'].values(): |
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| 271 | if ticket.p_state == 'paid' and \ |
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| 272 | ticket.p_category in ( |
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| 273 | 'schoolfee', 'schoolfee_incl', 'schoolfee_2',) and \ |
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| 274 | ticket.p_session == self.student[ |
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| 275 | 'studycourse'].current_session: |
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| 276 | return True |
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| 277 | return False |
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| 278 | |
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| 279 | def _coursePaymentsMade(self, course): |
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| 280 | if self.level_session < 2016: |
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| 281 | return True |
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| 282 | if not course.code[:3] in ('GST', 'ENT'): |
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| 283 | return True |
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| 284 | if len(self.student['payments']): |
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| 285 | paid_cats = list() |
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| 286 | for pticket in self.student['payments'].values(): |
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| 287 | if pticket.p_state == 'paid': |
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| 288 | paid_cats.append(pticket.p_category) |
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| 289 | if course.code in ('GST101', 'GST102', 'GST111', 'GST112') and \ |
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| 290 | not 'gst_registration_1' in paid_cats: |
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| 291 | return False |
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| 292 | if course.code in ('GST222',) and \ |
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| 293 | not 'gst_registration_2' in paid_cats: |
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| 294 | return False |
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| 295 | #if course.code in ('ENT201',) and \ |
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| 296 | # not 'ent_registration_1' in paid_cats: |
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| 297 | # return False |
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| 298 | if course.code in ('GST101', 'GST102') and \ |
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| 299 | not 'gst_text_book_1' in paid_cats and \ |
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| 300 | not 'gst_text_book_0' in paid_cats: |
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| 301 | return False |
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| 302 | if course.code in ('GST111', 'GST112') and \ |
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| 303 | not 'gst_text_book_2' in paid_cats and \ |
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| 304 | not 'gst_text_book_0' in paid_cats: |
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| 305 | return False |
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| 306 | if course.code in ('GST222',) and \ |
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| 307 | not 'gst_text_book_3' in paid_cats: |
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| 308 | return False |
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| 309 | #if course.code in ('ENT201',) and \ |
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| 310 | # not 'ent_text_book_1' in paid_cats: |
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| 311 | # return False |
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| 312 | return True |
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| 313 | return False |
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| 314 | |
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| 315 | def addCourseTicket(self, ticket, course): |
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| 316 | """Add a course ticket object. |
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| 317 | """ |
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| 318 | if not ICourseTicket.providedBy(ticket): |
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| 319 | raise TypeError( |
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| 320 | 'StudentStudyLeves contain only ICourseTicket instances') |
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| 321 | # Raise TicketError if course is in 2nd semester but |
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| 322 | # schoolfee has not yet been fully paid. |
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| 323 | if course.semester == 2 and not self._schoolfeePaymentMade(): |
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| 324 | raise TicketError( |
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| 325 | _('%s is a 2nd semester course which can only be added ' |
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| 326 | 'if school fees have been fully paid.' % course.code)) |
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| 327 | # Raise TicketError if registration fee or text |
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| 328 | # book fee haven't been paid. |
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| 329 | if not self._coursePaymentsMade(course): |
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| 330 | raise TicketError( |
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| 331 | _('%s can only be added if both registration fee and text ' |
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| 332 | 'book fee have been paid.' |
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| 333 | % course.code)) |
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| 334 | # We check if there exists a certificate course in the certificate |
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| 335 | # container which refers to the course. If such an object does |
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| 336 | # not exist, students and managers will be prevented from registering |
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| 337 | # the corresponding course. |
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| 338 | cert = self.__parent__.certificate |
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| 339 | ticket_allowed = False |
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| 340 | for val in cert.values(): |
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| 341 | if val.course == course: |
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| 342 | ticket_allowed = True |
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| 343 | break |
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| 344 | if not ticket_allowed: |
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| 345 | raise TicketError( |
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| 346 | _('%s is not part of the %s curriculum.' |
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| 347 | % (course.code, cert.code))) |
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| 348 | ticket.code = course.code |
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| 349 | ticket.title = course.title |
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| 350 | ticket.fcode = course.__parent__.__parent__.__parent__.code |
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| 351 | ticket.dcode = course.__parent__.__parent__.code |
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| 352 | ticket.credits = course.credits |
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| 353 | if self.student.entry_session < 2013: |
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| 354 | ticket.passmark = course.passmark - 5 |
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| 355 | else: |
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| 356 | ticket.passmark = course.passmark |
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| 357 | ticket.semester = course.semester |
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| 358 | self[ticket.code] = ticket |
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| 359 | return |
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| 360 | |
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| 361 | def addCertCourseTickets(self, cert): |
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| 362 | """Collect all certificate courses and create course |
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| 363 | tickets automatically. |
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| 364 | """ |
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| 365 | if cert is not None: |
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| 366 | for key, val in cert.items(): |
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| 367 | if val.level != self.level: |
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| 368 | continue |
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| 369 | ticket = createObject(u'waeup.CourseTicket') |
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| 370 | ticket.automatic = True |
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| 371 | ticket.mandatory = val.mandatory |
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| 372 | ticket.carry_over = False |
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| 373 | try: |
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| 374 | self.addCourseTicket(ticket, val.course) |
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| 375 | except TicketError: |
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| 376 | pass |
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| 377 | return |
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| 378 | |
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| 379 | CustomStudentStudyLevel = attrs_to_fields( |
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| 380 | CustomStudentStudyLevel, omit=[ |
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| 381 | 'total_credits', 'total_credits_s1', 'total_credits_s2', 'gpa']) |
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| 382 | |
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| 383 | class CustomStudentStudyLevelFactory(StudentStudyLevelFactory): |
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| 384 | """A factory for student study levels. |
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| 385 | """ |
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| 386 | |
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| 387 | def __call__(self, *args, **kw): |
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| 388 | return CustomStudentStudyLevel() |
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| 389 | |
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| 390 | def getInterfaces(self): |
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| 391 | return implementedBy(CustomStudentStudyLevel) |
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| 392 | |
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| 393 | class CustomCourseTicket(CourseTicket): |
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| 394 | """This is a course ticket which allows the |
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| 395 | student to attend the course. Lecturers will enter scores and more at |
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| 396 | the end of the term. |
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| 397 | |
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| 398 | A course ticket contains a copy of the original course and |
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| 399 | course referrer data. If the courses and/or their referrers are removed, the |
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| 400 | corresponding tickets remain unchanged. So we do not need any event |
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| 401 | triggered actions on course tickets. |
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| 402 | """ |
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| 403 | grok.implements(ICustomCourseTicket, IStudentNavigation) |
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| 404 | grok.provides(ICustomCourseTicket) |
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| 405 | |
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| 406 | @property |
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| 407 | def _getGradeWeightFromScore(self): |
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| 408 | """Nigerian Course Grading System |
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| 409 | """ |
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| 410 | if self.score == -1: |
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| 411 | return ('-',0) # core course and result not yet available (used by AAUE) |
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| 412 | if self.total_score is None: |
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| 413 | return (None, None) |
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| 414 | if self.total_score >= 70: |
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| 415 | return ('A',5) |
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| 416 | if self.total_score >= 60: |
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| 417 | return ('B',4) |
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| 418 | if self.total_score >= 50: |
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| 419 | return ('C',3) |
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| 420 | if self.total_score >= 45: |
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| 421 | return ('D',2) |
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| 422 | if self.total_score >= self.passmark: # passmark changed in 2013 from 40 to 45 |
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| 423 | return ('E',1) |
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| 424 | return ('F',0) |
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| 425 | |
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| 426 | @property |
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| 427 | def total_score(self): |
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| 428 | """Returns ca + score or imported total score. |
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| 429 | """ |
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| 430 | # Override total_score if value has been imported |
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| 431 | if getattr(self, 'imported_ts', None): |
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| 432 | return self.imported_ts |
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| 433 | if self.score == -1: |
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| 434 | return 0 |
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| 435 | if not None in (self.score, self.ca): |
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| 436 | return self.score + self.ca |
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| 437 | return None |
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| 438 | |
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| 439 | @property |
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| 440 | def removable_by_student(self): |
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| 441 | """True if student is allowed to remove the ticket. |
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| 442 | """ |
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| 443 | return not self.mandatory and not self.score |
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| 444 | |
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| 445 | @property |
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| 446 | def editable_by_lecturer(self): |
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| 447 | """True if lecturer is allowed to edit the ticket. |
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| 448 | """ |
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| 449 | try: |
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| 450 | cas = grok.getSite()[ |
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| 451 | 'configuration'].current_academic_session |
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| 452 | # Temporarily we allow students to pay for next session, so their |
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| 453 | # current_session might have increased |
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| 454 | if self.student.state in ( |
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| 455 | VALIDATED, REGISTERED, PAID, RETURNING) and \ |
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| 456 | self.student.current_session in (cas, cas+1): |
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| 457 | return True |
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| 458 | except (AttributeError, TypeError): # in unit tests |
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| 459 | pass |
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| 460 | return False |
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| 461 | |
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| 462 | CustomCourseTicket = attrs_to_fields(CustomCourseTicket) |
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| 463 | |
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| 464 | class CustomCourseTicketFactory(CourseTicketFactory): |
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| 465 | """A factory for student study levels. |
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| 466 | """ |
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| 467 | |
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| 468 | def __call__(self, *args, **kw): |
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| 469 | return CustomCourseTicket() |
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| 470 | |
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| 471 | def getInterfaces(self): |
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| 472 | return implementedBy(CustomCourseTicket) |
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