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

  • Committer: William Grant
  • Date: 2009-05-31 01:36:47 UTC
  • mto: (1281.1.8 aufsless)
  • mto: This revision was merged to the branch mainline in revision 1300.
  • Revision ID: grantw@unimelb.edu.au-20090531013647-ar21mrde7k394ilv
Make trampoline mount jails new-style (without AUFS).

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ivle/webapp/admin/subject.py
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# A sample / testing application for IVLE.
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import os
 
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import os.path
26
27
import urllib
 
28
import urlparse
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29
import cgi
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30
 
29
 
from common import util
30
 
import common.db
31
 
 
32
 
def handle(req):
33
 
    """Handler for the Subjects application. Links to subject home pages."""
34
 
 
35
 
    req.styles = ["media/subjects/subjects.css"]
36
 
    if req.path == "":
37
 
        handle_toplevel_menu(req)
38
 
    else:
39
 
        handle_subject_page(req, req.path)
40
 
 
41
 
def handle_toplevel_menu(req):
42
 
    # This is represented as a directory. Redirect and add a slash if it is
43
 
    # missing.
44
 
    if req.uri[-1] != '/':
45
 
        req.throw_redirect(req.uri + '/')
46
 
 
47
 
    (enrolled_subjects, unenrolled_subjects) = \
48
 
              common.db.DB().get_subjects_status(req.user.login)
49
 
 
50
 
    def print_subject(subject):
51
 
        if subject['url'] is None:
52
 
            req.write('  <li>%s (no home page)</li>\n'
53
 
                % cgi.escape(subject['subj_name']))
54
 
        else:
55
 
            req.write('  <li><a href="%s">%s</a></li>\n'
56
 
                % (cgi.escape(subject['url']),
57
 
                   cgi.escape(subject['subj_name'])))
58
 
 
59
 
    req.content_type = "text/html"
60
 
    req.write_html_head_foot = True
61
 
    req.write('<div id="ivle_padding">\n')
62
 
    req.write("<h2>IVLE Subject Homepages</h2>\n")
63
 
    req.write("<h2>Subjects</h2>\n<ul>\n")
64
 
    for subject in enrolled_subjects:
65
 
        print_subject(subject)
66
 
    req.write("</ul>\n")
67
 
    if len(unenrolled_subjects) > 0:
68
 
        req.write("<h3>Other Subjects</h3>\n")
69
 
        req.write("<p>You are not currently enrolled in these subjects</p>\n")
70
 
        req.write("<ul>\n")
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        for subject in unenrolled_subjects:
72
 
            print_subject(subject)
73
 
        req.write("</ul>\n")
74
 
    req.write("</div>\n")
75
 
 
76
 
def handle_subject_page(req, path):
77
 
    req.content_type = "text/html"
78
 
    req.write_html_head_foot = True     # Have dispatch print head and foot
79
 
 
80
 
    # Just make the iframe pointing to media/subjects
81
 
    serve_loc = util.make_path(os.path.join('media', 'subjects', path))
82
 
    req.write('<object class="fullscreen" type="text/html" \
83
 
data="%s"></iframe>'% urllib.quote(serve_loc))
 
31
from storm.locals import Desc
 
32
import genshi
 
33
from genshi.filters import HTMLFormFiller
 
34
from genshi.template import Context, TemplateLoader
 
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import formencode
 
36
 
 
37
from ivle.webapp.base.xhtml import XHTMLView
 
38
from ivle.webapp.base.plugins import ViewPlugin, MediaPlugin
 
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from ivle.webapp.errors import NotFound
 
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
 
 
46
from ivle.webapp.admin.projectservice import ProjectSetRESTView,\
 
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                                             ProjectRESTView
 
48
from ivle.webapp.admin.offeringservice import OfferingRESTView
 
49
 
 
50
 
 
51
class SubjectsView(XHTMLView):
 
52
    '''The view of the list of subjects.'''
 
53
    template = 'templates/subjects.html'
 
54
    tab = 'subjects'
 
55
 
 
56
    def authorize(self, req):
 
57
        return req.user is not None
 
58
 
 
59
    def populate(self, req, ctx):
 
60
        ctx['user'] = req.user
 
61
        ctx['semesters'] = []
 
62
        for semester in req.store.find(Semester).order_by(Desc(Semester.year),
 
63
                                                     Desc(Semester.semester)):
 
64
            enrolments = semester.enrolments.find(user=req.user)
 
65
            if enrolments.count():
 
66
                ctx['semesters'].append((semester, enrolments))
 
67
 
 
68
 
 
69
class UserValidator(formencode.FancyValidator):
 
70
    """A FormEncode validator that turns a username into a user.
 
71
 
 
72
    The state must have a 'store' attribute, which is the Storm store
 
73
    to use."""
 
74
    def _to_python(self, value, state):
 
75
        user = User.get_by_login(state.store, value)
 
76
        if user:
 
77
            return user
 
78
        else:
 
79
            raise formencode.Invalid('User does not exist', value, state)
 
80
 
 
81
 
 
82
class NoEnrolmentValidator(formencode.FancyValidator):
 
83
    """A FormEncode validator that ensures absence of an enrolment.
 
84
 
 
85
    The state must have an 'offering' attribute.
 
86
    """
 
87
    def _to_python(self, value, state):
 
88
        if state.offering.get_enrolment(value):
 
89
            raise formencode.Invalid('User already enrolled', value, state)
 
90
        return value
 
91
 
 
92
 
 
93
class EnrolSchema(formencode.Schema):
 
94
    user = formencode.All(NoEnrolmentValidator(), UserValidator())
 
95
 
 
96
 
 
97
class EnrolView(XHTMLView):
 
98
    """A form to enrol a user in an offering."""
 
99
    template = 'templates/enrol.html'
 
100
    tab = 'subjects'
 
101
    permission = 'edit'
 
102
 
 
103
    def __init__(self, req, subject, year, semester):
 
104
        """Find the given offering by subject, year and semester."""
 
105
        self.context = req.store.find(Offering,
 
106
            Offering.subject_id == Subject.id,
 
107
            Subject.short_name == subject,
 
108
            Offering.semester_id == Semester.id,
 
109
            Semester.year == year,
 
110
            Semester.semester == semester).one()
 
111
 
 
112
        if not self.context:
 
113
            raise NotFound()
 
114
 
 
115
    def filter(self, stream, ctx):
 
116
        return stream | HTMLFormFiller(data=ctx['data'])
 
117
 
 
118
    def populate(self, req, ctx):
 
119
        if req.method == 'POST':
 
120
            data = dict(req.get_fieldstorage())
 
121
            try:
 
122
                validator = EnrolSchema()
 
123
                req.offering = self.context # XXX: Getting into state.
 
124
                data = validator.to_python(data, state=req)
 
125
                self.context.enrol(data['user'])
 
126
                req.store.commit()
 
127
                req.throw_redirect(req.uri)
 
128
            except formencode.Invalid, e:
 
129
                errors = e.unpack_errors()
 
130
        else:
 
131
            data = {}
 
132
            errors = {}
 
133
 
 
134
        ctx['data'] = data or {}
 
135
        ctx['offering'] = self.context
 
136
        ctx['errors'] = errors
 
137
 
 
138
class OfferingProjectsView(XHTMLView):
 
139
    """View the projects for an offering."""
 
140
    template = 'templates/offering_projects.html'
 
141
    permission = 'edit'
 
142
    tab = 'subjects'
 
143
    
 
144
    def __init__(self, req, subject, year, semester):
 
145
        self.context = req.store.find(Offering,
 
146
            Offering.subject_id == Subject.id,
 
147
            Subject.short_name == subject,
 
148
            Offering.semester_id == Semester.id,
 
149
            Semester.year == year,
 
150
            Semester.semester == semester).one()
 
151
 
 
152
        if not self.context:
 
153
            raise NotFound()
 
154
 
 
155
    def project_url(self, projectset, project):
 
156
        return "/subjects/%s/%s/%s/+projects/%s" % (
 
157
                    self.context.subject.short_name,
 
158
                    self.context.semester.year,
 
159
                    self.context.semester.semester,
 
160
                    project.short_name
 
161
                    )
 
162
 
 
163
    def new_project_url(self, projectset):
 
164
        return "/api/subjects/" + self.context.subject.short_name + "/" +\
 
165
                self.context.semester.year + "/" + \
 
166
                self.context.semester.semester + "/+projectsets/" +\
 
167
                str(projectset.id) + "/+projects/+new"
 
168
    
 
169
    def populate(self, req, ctx):
 
170
        self.plugin_styles[Plugin] = ["project.css"]
 
171
        self.plugin_scripts[Plugin] = ["project.js"]
 
172
        ctx['offering'] = self.context
 
173
        ctx['projectsets'] = []
 
174
 
 
175
        #Open the projectset Fragment, and render it for inclusion
 
176
        #into the ProjectSets page
 
177
        #XXX: This could be a lot cleaner
 
178
        loader = genshi.template.TemplateLoader(".", auto_reload=True)
 
179
 
 
180
        set_fragment = os.path.join(os.path.dirname(__file__),
 
181
                "templates/projectset_fragment.html")
 
182
        project_fragment = os.path.join(os.path.dirname(__file__),
 
183
                "templates/project_fragment.html")
 
184
 
 
185
        for projectset in self.context.project_sets:
 
186
            settmpl = loader.load(set_fragment)
 
187
            setCtx = Context()
 
188
            setCtx['projectset'] = projectset
 
189
            setCtx['new_project_url'] = self.new_project_url(projectset)
 
190
            setCtx['projects'] = []
 
191
 
 
192
            for project in projectset.projects:
 
193
                projecttmpl = loader.load(project_fragment)
 
194
                projectCtx = Context()
 
195
                projectCtx['project'] = project
 
196
                projectCtx['project_url'] = self.project_url(projectset, project)
 
197
 
 
198
                setCtx['projects'].append(
 
199
                        projecttmpl.generate(projectCtx))
 
200
 
 
201
            ctx['projectsets'].append(settmpl.generate(setCtx))
 
202
 
 
203
 
 
204
class ProjectView(XHTMLView):
 
205
    """View the submissions for a ProjectSet"""
 
206
    template = "templates/project.html"
 
207
    permission = "edit"
 
208
    tab = 'subjects'
 
209
 
 
210
    def __init__(self, req, subject, year, semester, project):
 
211
        self.context = req.store.find(Project,
 
212
                Project.short_name == project,
 
213
                Project.project_set_id == ProjectSet.id,
 
214
                ProjectSet.offering_id == Offering.id,
 
215
                Offering.semester_id == Semester.id,
 
216
                Semester.year == year,
 
217
                Semester.semester == semester,
 
218
                Offering.subject_id == Subject.id,
 
219
                Subject.short_name == subject).one()
 
220
        if self.context is None:
 
221
            raise NotFound()
 
222
 
 
223
    def build_subversion_url(self, svnroot, submission):
 
224
        princ = submission.assessed.principal
 
225
 
 
226
        if isinstance(princ, User):
 
227
            path = 'users/%s' % princ.login
 
228
        else:
 
229
            path = 'groups/%s_%s_%s_%s' % (
 
230
                    princ.project_set.offering.subject.short_name,
 
231
                    princ.project_set.offering.semester.year,
 
232
                    princ.project_set.offering.semester.semester,
 
233
                    princ.name
 
234
                    )
 
235
        return urlparse.urljoin(
 
236
                    svnroot,
 
237
                    os.path.join(path, submission.path[1:] if
 
238
                                       submission.path.startswith(os.sep) else
 
239
                                       submission.path))
 
240
 
 
241
    def populate(self, req, ctx):
 
242
        self.plugin_styles[Plugin] = ["project.css"]
 
243
 
 
244
        ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
 
245
        ctx['build_subversion_url'] = self.build_subversion_url
 
246
        ctx['svn_addr'] = req.config['urls']['svn_addr']
 
247
        ctx['project'] = self.context
 
248
        ctx['user'] = req.user
 
249
 
 
250
class Plugin(ViewPlugin, MediaPlugin):
 
251
    urls = [
 
252
        ('subjects/', SubjectsView),
 
253
        ('subjects/:subject/:year/:semester/+enrolments/+new', EnrolView),
 
254
        ('subjects/:subject/:year/:semester/+projects', OfferingProjectsView),
 
255
        ('subjects/:subject/:year/:semester/+projects/:project', ProjectView),
 
256
        #API Views
 
257
        ('api/subjects/:subject/:year/:semester/+projectsets/+new',
 
258
            OfferingRESTView),
 
259
        ('api/subjects/:subject/:year/:semester/+projectsets/:projectset/+projects/+new',
 
260
            ProjectSetRESTView),
 
261
        ('api/subjects/:subject/:year/:semester/+projects/:project', 
 
262
            ProjectRESTView),
 
263
 
 
264
    ]
 
265
 
 
266
    tabs = [
 
267
        ('subjects', 'Subjects',
 
268
         'View subject content and complete worksheets',
 
269
         'subjects.png', 'subjects', 5)
 
270
    ]
 
271
 
 
272
    media = 'subject-media'