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ivle.webapp.console.service#restart_console: Don't double-JSON.

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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
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import urllib
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import urlparse
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import cgi
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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
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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
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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.webapp.base.views import XHTMLView
 
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from ivle.webapp.base.plugins import BasePlugin
 
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from ivle.webapp.errors import NotFound
 
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from ivle.database import Subject
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from ivle import util
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import ivle.date
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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.publishing 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)
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from ivle.webapp.admin.breadcrumbs import (SubjectBreadcrumb,
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            OfferingBreadcrumb, UserBreadcrumb, ProjectBreadcrumb)
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from ivle.webapp.groups import GroupsView
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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'
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    def authorize(self, req):
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        return req.user is not None
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64
 
    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))
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74
 
class UserValidator(formencode.FancyValidator):
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    """A FormEncode validator that turns a username into a user.
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77
 
    The state must have a 'store' attribute, which is the Storm store
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    to use."""
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    def _to_python(self, value, state):
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        user = User.get_by_login(state.store, value)
81
 
        if user:
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            return user
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        else:
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            raise formencode.Invalid('User does not exist', value, state)
85
 
 
86
 
 
87
 
class NoEnrolmentValidator(formencode.FancyValidator):
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    """A FormEncode validator that ensures absence of an enrolment.
89
 
 
90
 
    The state must have an 'offering' attribute.
91
 
    """
92
 
    def _to_python(self, value, state):
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        if state.offering.get_enrolment(value):
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            raise formencode.Invalid('User already enrolled', value, state)
95
 
        return value
96
 
 
97
 
 
98
 
class EnrolSchema(formencode.Schema):
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    user = formencode.All(NoEnrolmentValidator(), UserValidator())
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101
 
 
102
 
class EnrolmentsView(XHTMLView):
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    """A page which displays all users enrolled in an offering."""
104
 
    template = 'templates/enrolments.html'
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    permission = 'edit'
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107
 
    def populate(self, req, ctx):
108
 
        ctx['offering'] = self.context
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110
 
class EnrolView(XHTMLView):
111
 
    """A form to enrol a user in an offering."""
112
 
    template = 'templates/enrol.html'
113
 
    tab = 'subjects'
114
 
    permission = 'edit'
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116
 
    def filter(self, stream, ctx):
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        return stream | HTMLFormFiller(data=ctx['data'])
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119
 
    def populate(self, req, ctx):
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        if req.method == 'POST':
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            data = dict(req.get_fieldstorage())
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            try:
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                validator = EnrolSchema()
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                req.offering = self.context # XXX: Getting into state.
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                data = validator.to_python(data, state=req)
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                self.context.enrol(data['user'])
127
 
                req.store.commit()
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                req.throw_redirect(req.uri)
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            except formencode.Invalid, e:
130
 
                errors = e.unpack_errors()
131
 
        else:
132
 
            data = {}
133
 
            errors = {}
134
 
 
135
 
        ctx['data'] = data or {}
136
 
        ctx['offering'] = self.context
137
 
        ctx['errors'] = errors
138
 
 
139
 
class OfferingProjectsView(XHTMLView):
140
 
    """View the projects for an offering."""
141
 
    template = 'templates/offering_projects.html'
142
 
    permission = 'edit'
143
 
    tab = 'subjects'
144
 
 
145
 
    def populate(self, req, ctx):
146
 
        self.plugin_styles[Plugin] = ["project.css"]
147
 
        self.plugin_scripts[Plugin] = ["project.js"]
148
 
        ctx['req'] = req
149
 
        ctx['offering'] = self.context
150
 
        ctx['projectsets'] = []
151
 
        ctx['OfferingRESTView'] = OfferingRESTView
152
 
 
153
 
        #Open the projectset Fragment, and render it for inclusion
154
 
        #into the ProjectSets page
155
 
        #XXX: This could be a lot cleaner
156
 
        loader = genshi.template.TemplateLoader(".", auto_reload=True)
157
 
 
158
 
        set_fragment = os.path.join(os.path.dirname(__file__),
159
 
                "templates/projectset_fragment.html")
160
 
        project_fragment = os.path.join(os.path.dirname(__file__),
161
 
                "templates/project_fragment.html")
162
 
 
163
 
        for projectset in self.context.project_sets:
164
 
            settmpl = loader.load(set_fragment)
165
 
            setCtx = Context()
166
 
            setCtx['req'] = req
167
 
            setCtx['projectset'] = projectset
168
 
            setCtx['projects'] = []
169
 
            setCtx['GroupsView'] = GroupsView
170
 
            setCtx['ProjectSetRESTView'] = ProjectSetRESTView
171
 
 
172
 
            for project in projectset.projects:
173
 
                projecttmpl = loader.load(project_fragment)
174
 
                projectCtx = Context()
175
 
                projectCtx['req'] = req
176
 
                projectCtx['project'] = project
177
 
 
178
 
                setCtx['projects'].append(
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                        projecttmpl.generate(projectCtx))
180
 
 
181
 
            ctx['projectsets'].append(settmpl.generate(setCtx))
182
 
 
183
 
 
184
 
class ProjectView(XHTMLView):
185
 
    """View the submissions for a ProjectSet"""
186
 
    template = "templates/project.html"
187
 
    permission = "edit"
188
 
    tab = 'subjects'
189
 
 
190
 
    def build_subversion_url(self, svnroot, submission):
191
 
        princ = submission.assessed.principal
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193
 
        if isinstance(princ, User):
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            path = 'users/%s' % princ.login
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        else:
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            path = 'groups/%s_%s_%s_%s' % (
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                    princ.project_set.offering.subject.short_name,
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                    princ.project_set.offering.semester.year,
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                    princ.project_set.offering.semester.semester,
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                    princ.name
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                    )
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        return urlparse.urljoin(
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                    svnroot,
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                    os.path.join(path, submission.path[1:] if
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                                       submission.path.startswith(os.sep) else
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                                       submission.path))
207
 
 
208
 
    def populate(self, req, ctx):
209
 
        self.plugin_styles[Plugin] = ["project.css"]
210
 
 
211
 
        ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
212
 
        ctx['build_subversion_url'] = self.build_subversion_url
213
 
        ctx['svn_addr'] = req.config['urls']['svn_addr']
214
 
        ctx['project'] = self.context
215
 
        ctx['user'] = req.user
216
 
 
217
 
class OfferingEnrolmentSet(object):
218
 
    def __init__(self, offering):
219
 
        self.offering = offering
220
 
 
221
 
class Plugin(ViewPlugin, MediaPlugin):
222
 
    forward_routes = (root_to_subject, subject_to_offering,
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                      offering_to_project, offering_to_projectset)
224
 
    reverse_routes = (subject_url, offering_url, projectset_url, project_url)
225
 
 
226
 
    views = [(ApplicationRoot, ('subjects', '+index'), SubjectsView),
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             (Offering, ('+enrolments', '+index'), EnrolmentsView),
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             (Offering, ('+enrolments', '+new'), EnrolView),
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             (Offering, ('+projects', '+index'), OfferingProjectsView),
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             (Project, '+index', ProjectView),
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232
 
             (Offering, ('+projectsets', '+new'), OfferingRESTView, 'api'),
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             (ProjectSet, ('+projects', '+new'), ProjectSetRESTView, 'api'),
234
 
             (Project, '+index', ProjectRESTView, 'api'),
235
 
             ]
236
 
 
237
 
    breadcrumbs = {Subject: SubjectBreadcrumb,
238
 
                   Offering: OfferingBreadcrumb,
239
 
                   User: UserBreadcrumb,
240
 
                   Project: ProjectBreadcrumb,
241
 
                   }
242
 
 
243
 
    tabs = [
244
 
        ('subjects', 'Subjects',
245
 
         'View subject content and complete worksheets',
246
 
         'subjects.png', 'subjects', 5)
 
38
    app_template = 'subjects.html'
 
39
    appname = 'subjects'
 
40
 
 
41
    def populate(self, req, ctx):
 
42
        req.styles = ["media/subjects/subjects.css"]
 
43
 
 
44
        enrolled_subjects = req.user.subjects
 
45
        unenrolled_subjects = [subject for subject in
 
46
                               req.store.find(Subject)
 
47
                               if subject not in enrolled_subjects]
 
48
 
 
49
        ctx['enrolled_subjects'] = []
 
50
        ctx['other_subjects'] = []
 
51
 
 
52
        req.content_type = "text/html"
 
53
        req.write_html_head_foot = True
 
54
 
 
55
        for subject in enrolled_subjects:
 
56
            new_subj = {}
 
57
            new_subj['name'] = subject.name
 
58
            new_subj['url'] = subject.url
 
59
            ctx['enrolled_subjects'].append(new_subj)
 
60
 
 
61
        if len(unenrolled_subjects) > 0:
 
62
            for subject in unenrolled_subjects:
 
63
                new_subj = {}
 
64
                new_subj['name'] = subject.name
 
65
                new_subj['url'] = subject.url
 
66
                ctx['other_subjects'].append(new_subj)
 
67
 
 
68
 
 
69
class SubjectView(XHTMLView):
 
70
    '''The view of a subject.'''
 
71
    app_template = 'subject.html'
 
72
    appname = 'subjects' # XXX
 
73
 
 
74
    def __init__(self, req, subject, path):
 
75
        self.subject = req.store.find(Subject, code=subject).one()
 
76
        self.path = path
 
77
 
 
78
    def populate(self, req, ctx):
 
79
        if self.subject is None:
 
80
            raise NotFound()
 
81
 
 
82
        ctx['serve_loc'] = urllib.quote(util.make_path(os.path.join('media',
 
83
                                    'subjects', self.subject.code, self.path)))
 
84
 
 
85
class Plugin(BasePlugin):
 
86
    urls = [
 
87
        ('subjects/', SubjectsView),
 
88
        ('subjects/:subject', SubjectView, {'path': ''}),
 
89
        ('subjects/:subject/*(path)', SubjectView),
247
90
    ]
248
 
 
249
 
    media = 'subject-media'