source: main/waeup.sirp/trunk/src/waeup/sirp/students/studycourse.py @ 7663

Last change on this file since 7663 was 7661, checked in by Henrik Bettermann, 13 years ago

Implement carry-over course collection. Collect carry-over courses in base levels (not in repeating levels).

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1## $Id: studycourse.py 7661 2012-02-17 07:43:22Z 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"""
19Container which holds the data of the student study courses
20and contains the (student) study level objects.
21"""
22import grok
23from zope.component.interfaces import IFactory
24from zope.interface import implementedBy
25from waeup.sirp.students.interfaces import (
26    IStudentStudyCourse, IStudentNavigation, IStudentStudyLevel)
27from waeup.sirp.students.studylevel import CourseTicket
28from waeup.sirp.utils.helpers import attrs_to_fields
29
30class StudentStudyCourse(grok.Container):
31    """This is a container for study levels.
32    """
33    grok.implements(IStudentStudyCourse, IStudentNavigation)
34    grok.provides(IStudentStudyCourse)
35
36    def __init__(self):
37        super(StudentStudyCourse, self).__init__()
38        return
39
40    def getStudent(self):
41        return self.__parent__
42
43    def addStudentStudyLevel(self, cert, studylevel):
44        """Add a study level object.
45        """
46        if not IStudentStudyLevel.providedBy(studylevel):
47            raise TypeError(
48                'StudentStudyCourses contain only IStudentStudyLevel instances')
49        self[str(studylevel.level)] = studylevel
50
51        #Create course tickets automatically
52        if cert is not None:
53            for key, val in cert.items():
54                if val.level != studylevel.level:
55                    continue
56                ticket = CourseTicket()
57                ticket.code = val.getCourseCode()
58                ticket.automatic = True
59                ticket.core_or_elective = val.core_or_elective
60                ticket.title = val.course.title
61                ticket.fcode = val.course.__parent__.__parent__.__parent__.code
62                ticket.dcode = val.course.__parent__.__parent__.code
63                ticket.credits = val.course.credits
64                ticket.passmark = val.course.passmark
65                ticket.semester = val.course.semester
66                self[str(studylevel.level)][ticket.code] = ticket
67        # Collect carry-over courses in base levels (not in repeating levels)
68        if studylevel.level % 100 == 0:
69            levels = sorted(self.keys())
70            index = levels.index(str(studylevel.level))
71            if  index > 0:
72                previous_level = self[levels[index-1]]
73                for key, val in previous_level.items():
74                    if val.score < val.passmark:
75                        if key in self[str(studylevel.level)]:
76                            # Carry-over ticket exists
77                            continue
78                        co_ticket = CourseTicket()
79                        for name in ['code', 'title', 'credits', 'passmark',
80                                     'semester', 'core_or_elective',
81                                     'fcode', 'dcode']:
82                            setattr(co_ticket, name, getattr(val, name))
83                        co_ticket.automatic = True
84                        co_ticket.carry_over = True
85                        self[str(studylevel.level)][co_ticket.code] = co_ticket
86        return
87
88StudentStudyCourse = attrs_to_fields(StudentStudyCourse)
89
90class StudentStudyCourseFactory(grok.GlobalUtility):
91    """A factory for student study courses.
92    """
93    grok.implements(IFactory)
94    grok.name(u'waeup.StudentStudyCourse')
95    title = u"Create a new student study course.",
96    description = u"This factory instantiates new student study course instances."
97
98    def __call__(self, *args, **kw):
99        return StudentStudyCourse()
100
101    def getInterfaces(self):
102        return implementedBy(StudentStudyCourse)
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