source: main/kofacustom.dspg/trunk/src/kofacustom/dspg/students/studylevel.py @ 16827

Last change on this file since 16827 was 16817, checked in by Henrik Bettermann, 3 years ago

Show semester credits on study level pages.

  • Property svn:keywords set to Id
File size: 4.3 KB
Line 
1## $Id: studylevel.py 16817 2022-02-17 09:09:52Z henrik $
2##
3## Copyright (C) 2012 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"""
19Container which holds the data of a student study level
20and contains the course tickets.
21"""
22import grok
23from zope.component.interfaces import IFactory
24from zope.interface import implementedBy
25from waeup.kofa.utils.helpers import attrs_to_fields
26from waeup.kofa.students.studylevel import (
27    StudentStudyLevel, CourseTicket,
28    CourseTicketFactory, StudentStudyLevelFactory)
29from waeup.kofa.students.interfaces import IStudentNavigation
30from kofacustom.dspg.students.interfaces import (
31    ICustomStudentStudyLevel, ICustomCourseTicket)
32
33
34class CustomStudentStudyLevel(StudentStudyLevel):
35    """This is a container for course tickets.
36    """
37    grok.implements(ICustomStudentStudyLevel, IStudentNavigation)
38    grok.provides(ICustomStudentStudyLevel)
39
40    @property
41    def total_credits_s1(self):
42        total = 0
43        for ticket in self.values():
44            if ticket.semester == 1 and not ticket.outstanding:
45                total += ticket.credits
46        return total
47
48    @property
49    def total_credits_s2(self):
50        total = 0
51        for ticket in self.values():
52            if ticket.semester == 2 and not ticket.outstanding:
53                total += ticket.credits
54        return total
55
56    @property
57    def gpa_params(self):
58        """Calculate gpa parameters for this level.
59        """
60        credits_weighted = 0.0
61        credits_counted = 0
62        level_gpa = 0.0
63        for ticket in self.values():
64            if ticket.total_score is not None:
65                credits_counted += ticket.credits
66                credits_weighted += ticket.credits * ticket.weight
67        if credits_counted:
68            level_gpa = round(credits_weighted / credits_counted, 2)
69        # Override level_gpa if value has been imported
70        # (not implemented in base package)
71        imported_gpa = getattr(self, 'imported_gpa', None)
72        if imported_gpa:
73            level_gpa = imported_gpa
74        return level_gpa, credits_counted, credits_weighted
75
76
77CustomStudentStudyLevel = attrs_to_fields(
78    CustomStudentStudyLevel, omit=['total_credits', 'gpa',
79        'total_credits_s1', 'total_credits_s2'])
80
81class CustomStudentStudyLevelFactory(StudentStudyLevelFactory):
82    """A factory for student study levels.
83    """
84
85    def __call__(self, *args, **kw):
86        return CustomStudentStudyLevel()
87
88    def getInterfaces(self):
89        return implementedBy(CustomStudentStudyLevel)
90
91class CustomCourseTicket(CourseTicket):
92    """
93    """
94    grok.implements(ICustomCourseTicket, IStudentNavigation)
95    grok.provides(ICustomCourseTicket)
96
97
98    @property
99    def _getGradeWeightFromScore(self):
100        """DSPG Course Grading System
101        """
102        if self.total_score is None:
103            return (None, None)
104        if self.total_score >= 75:
105            return ('A',4)
106        if self.total_score >= 70:
107            return ('AB',3.5)
108        if self.total_score >= 65:
109            return ('B',3.25)
110        if self.total_score >= 60:
111            return ('BC',3.0)
112        if self.total_score >= 55:
113            return ('C',2.75)
114        if self.total_score >= 50:
115            return ('CD',2.5)
116        if self.total_score >= 45:
117            return ('D',2.25)
118        if self.total_score >= 40:
119            return ('E',2)
120        return ('F',0)
121
122
123CustomCourseTicket = attrs_to_fields(CustomCourseTicket)
124
125class CustomCourseTicketFactory(CourseTicketFactory):
126    """A factory for student study levels.
127    """
128
129    def __call__(self, *args, **kw):
130        return CustomCourseTicket()
131
132    def getInterfaces(self):
133        return implementedBy(CustomCourseTicket)
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