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Viewing changes to ivle/webapp/admin/subject.py

  • Committer: William Grant
  • Date: 2009-07-05 05:55:33 UTC
  • mto: (1294.4.2 ui-the-third)
  • mto: This revision was merged to the branch mainline in revision 1353.
  • Revision ID: grantw@unimelb.edu.au-20090705055533-9gs58527qs6u4zi0
Add a new root breadcrumb image, and a pathetic breadcrumb chevron.

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ivle/webapp/admin/subject.py
 
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# IVLE
 
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# Copyright (C) 2007-2008 The University of Melbourne
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
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# App: subjects
 
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# Author: Matt Giuca
 
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# Date: 29/2/2008
 
21
 
 
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# This is an IVLE application.
 
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# A sample / testing application for IVLE.
 
24
 
 
25
import os
 
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import os.path
 
27
import urllib
 
28
import urlparse
 
29
import cgi
 
30
 
 
31
from storm.locals import Desc, Store
 
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import genshi
 
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from genshi.filters import HTMLFormFiller
 
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from genshi.template import Context, TemplateLoader
 
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import formencode
 
36
 
 
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from ivle.webapp.base.xhtml import XHTMLView
 
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from ivle.webapp.base.plugins import ViewPlugin, MediaPlugin
 
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from ivle.webapp import ApplicationRoot
 
40
 
 
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from ivle.database import Subject, Semester, Offering, Enrolment, User,\
 
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                          ProjectSet, Project, ProjectSubmission
 
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from ivle import util
 
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import ivle.date
 
45
 
 
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from ivle.webapp.admin.projectservice import ProjectSetRESTView,\
 
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                                             ProjectRESTView
 
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from ivle.webapp.admin.offeringservice import OfferingRESTView
 
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from ivle.webapp.admin.traversal import (root_to_subject,
 
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            subject_to_offering, offering_to_projectset, offering_to_project,
 
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            subject_url, offering_url, projectset_url, project_url)
 
52
 
 
53
class SubjectsView(XHTMLView):
 
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    '''The view of the list of subjects.'''
 
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    template = 'templates/subjects.html'
 
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    tab = 'subjects'
 
57
 
 
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    def authorize(self, req):
 
59
        return req.user is not None
 
60
 
 
61
    def populate(self, req, ctx):
 
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        ctx['user'] = req.user
 
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        ctx['semesters'] = []
 
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        for semester in req.store.find(Semester).order_by(Desc(Semester.year),
 
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                                                     Desc(Semester.semester)):
 
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            enrolments = semester.enrolments.find(user=req.user)
 
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            if enrolments.count():
 
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                ctx['semesters'].append((semester, enrolments))
 
69
 
 
70
 
 
71
class UserValidator(formencode.FancyValidator):
 
72
    """A FormEncode validator that turns a username into a user.
 
73
 
 
74
    The state must have a 'store' attribute, which is the Storm store
 
75
    to use."""
 
76
    def _to_python(self, value, state):
 
77
        user = User.get_by_login(state.store, value)
 
78
        if user:
 
79
            return user
 
80
        else:
 
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            raise formencode.Invalid('User does not exist', value, state)
 
82
 
 
83
 
 
84
class NoEnrolmentValidator(formencode.FancyValidator):
 
85
    """A FormEncode validator that ensures absence of an enrolment.
 
86
 
 
87
    The state must have an 'offering' attribute.
 
88
    """
 
89
    def _to_python(self, value, state):
 
90
        if state.offering.get_enrolment(value):
 
91
            raise formencode.Invalid('User already enrolled', value, state)
 
92
        return value
 
93
 
 
94
 
 
95
class EnrolSchema(formencode.Schema):
 
96
    user = formencode.All(NoEnrolmentValidator(), UserValidator())
 
97
 
 
98
 
 
99
class EnrolView(XHTMLView):
 
100
    """A form to enrol a user in an offering."""
 
101
    template = 'templates/enrol.html'
 
102
    tab = 'subjects'
 
103
    permission = 'edit'
 
104
 
 
105
    def filter(self, stream, ctx):
 
106
        return stream | HTMLFormFiller(data=ctx['data'])
 
107
 
 
108
    def populate(self, req, ctx):
 
109
        if req.method == 'POST':
 
110
            data = dict(req.get_fieldstorage())
 
111
            try:
 
112
                validator = EnrolSchema()
 
113
                req.offering = self.context # XXX: Getting into state.
 
114
                data = validator.to_python(data, state=req)
 
115
                self.context.enrol(data['user'])
 
116
                req.store.commit()
 
117
                req.throw_redirect(req.uri)
 
118
            except formencode.Invalid, e:
 
119
                errors = e.unpack_errors()
 
120
        else:
 
121
            data = {}
 
122
            errors = {}
 
123
 
 
124
        ctx['data'] = data or {}
 
125
        ctx['offering'] = self.context
 
126
        ctx['errors'] = errors
 
127
 
 
128
class OfferingProjectsView(XHTMLView):
 
129
    """View the projects for an offering."""
 
130
    template = 'templates/offering_projects.html'
 
131
    permission = 'edit'
 
132
    tab = 'subjects'
 
133
 
 
134
    def project_url(self, projectset, project):
 
135
        return "/subjects/%s/%s/%s/+projects/%s" % (
 
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                    self.context.subject.short_name,
 
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                    self.context.semester.year,
 
138
                    self.context.semester.semester,
 
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                    project.short_name
 
140
                    )
 
141
 
 
142
    def new_project_url(self, projectset):
 
143
        return "/api/subjects/" + self.context.subject.short_name + "/" +\
 
144
                self.context.semester.year + "/" + \
 
145
                self.context.semester.semester + "/+projectsets/" +\
 
146
                str(projectset.id) + "/+projects/+new"
 
147
    
 
148
    def populate(self, req, ctx):
 
149
        self.plugin_styles[Plugin] = ["project.css"]
 
150
        self.plugin_scripts[Plugin] = ["project.js"]
 
151
        ctx['offering'] = self.context
 
152
        ctx['projectsets'] = []
 
153
 
 
154
        #Open the projectset Fragment, and render it for inclusion
 
155
        #into the ProjectSets page
 
156
        #XXX: This could be a lot cleaner
 
157
        loader = genshi.template.TemplateLoader(".", auto_reload=True)
 
158
 
 
159
        set_fragment = os.path.join(os.path.dirname(__file__),
 
160
                "templates/projectset_fragment.html")
 
161
        project_fragment = os.path.join(os.path.dirname(__file__),
 
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                "templates/project_fragment.html")
 
163
 
 
164
        for projectset in self.context.project_sets:
 
165
            settmpl = loader.load(set_fragment)
 
166
            setCtx = Context()
 
167
            setCtx['projectset'] = projectset
 
168
            setCtx['new_project_url'] = self.new_project_url(projectset)
 
169
            setCtx['projects'] = []
 
170
 
 
171
            for project in projectset.projects:
 
172
                projecttmpl = loader.load(project_fragment)
 
173
                projectCtx = Context()
 
174
                projectCtx['project'] = project
 
175
                projectCtx['project_url'] = self.project_url(projectset, project)
 
176
 
 
177
                setCtx['projects'].append(
 
178
                        projecttmpl.generate(projectCtx))
 
179
 
 
180
            ctx['projectsets'].append(settmpl.generate(setCtx))
 
181
 
 
182
 
 
183
class ProjectView(XHTMLView):
 
184
    """View the submissions for a ProjectSet"""
 
185
    template = "templates/project.html"
 
186
    permission = "edit"
 
187
    tab = 'subjects'
 
188
 
 
189
    def build_subversion_url(self, svnroot, submission):
 
190
        princ = submission.assessed.principal
 
191
 
 
192
        if isinstance(princ, User):
 
193
            path = 'users/%s' % princ.login
 
194
        else:
 
195
            path = 'groups/%s_%s_%s_%s' % (
 
196
                    princ.project_set.offering.subject.short_name,
 
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                    princ.project_set.offering.semester.year,
 
198
                    princ.project_set.offering.semester.semester,
 
199
                    princ.name
 
200
                    )
 
201
        return urlparse.urljoin(
 
202
                    svnroot,
 
203
                    os.path.join(path, submission.path[1:] if
 
204
                                       submission.path.startswith(os.sep) else
 
205
                                       submission.path))
 
206
 
 
207
    def populate(self, req, ctx):
 
208
        self.plugin_styles[Plugin] = ["project.css"]
 
209
 
 
210
        ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
 
211
        ctx['build_subversion_url'] = self.build_subversion_url
 
212
        ctx['svn_addr'] = req.config['urls']['svn_addr']
 
213
        ctx['project'] = self.context
 
214
        ctx['user'] = req.user
 
215
 
 
216
class OfferingEnrolmentSet(object):
 
217
    def __init__(self, offering):
 
218
        self.offering = offering
 
219
 
 
220
class Plugin(ViewPlugin, MediaPlugin):
 
221
    forward_routes = (root_to_subject, subject_to_offering,
 
222
                      offering_to_project, offering_to_projectset)
 
223
    reverse_routes = (subject_url, offering_url, projectset_url, project_url)
 
224
 
 
225
    views = [(ApplicationRoot, ('subjects', '+index'), SubjectsView),
 
226
             (Offering, ('+enrolments', '+new'), EnrolView),
 
227
             (Offering, ('+projects', '+index'), OfferingProjectsView),
 
228
             (Project, '+index', ProjectView),
 
229
 
 
230
             (Offering, ('+projectsets', '+new'), OfferingRESTView, 'api'),
 
231
             (ProjectSet, ('+projects', '+new'), ProjectSetRESTView, 'api'),
 
232
             (Project, '+index', ProjectRESTView, 'api'),
 
233
             ]
 
234
 
 
235
    tabs = [
 
236
        ('subjects', 'Subjects',
 
237
         'View subject content and complete worksheets',
 
238
         'subjects.png', 'subjects', 5)
 
239
    ]
 
240
 
 
241
    media = 'subject-media'