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

  • Committer: Matt Giuca
  • Date: 2009-12-08 05:05:20 UTC
  • Revision ID: matt.giuca@gmail.com-20091208050520-a4nmmjxwtmhip063
ivle-createdatadirs: Fixed exit -- if path already exists, log and exit(0).

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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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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
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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.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 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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class SubjectsView(XHTMLView):
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    '''The view of the list of subjects.'''
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    template = 'subjects.html'
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    appname = 'subjects' # XXX
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    def populate(self, req, ctx):
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        enrolled_subjects = req.user.subjects
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        unenrolled_subjects = [subject for subject in
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                               req.store.find(Subject)
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                               if subject not in enrolled_subjects]
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        ctx['enrolled_subjects'] = []
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        ctx['other_subjects'] = []
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        req.content_type = "text/html"
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        req.write_html_head_foot = True
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        for subject in enrolled_subjects:
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            new_subj = {}
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            new_subj['name'] = subject.name
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            new_subj['url'] = subject.url
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            ctx['enrolled_subjects'].append(new_subj)
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        if len(unenrolled_subjects) > 0:
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            for subject in unenrolled_subjects:
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                new_subj = {}
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                new_subj['name'] = subject.name
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                new_subj['url'] = subject.url
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                ctx['other_subjects'].append(new_subj)
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class Plugin(ViewPlugin):
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    urls = [
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        ('subjects/', SubjectsView),
 
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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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    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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class UserValidator(formencode.FancyValidator):
 
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    """A FormEncode validator that turns a username into a user.
 
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    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)
 
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        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)
 
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class NoEnrolmentValidator(formencode.FancyValidator):
 
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    """A FormEncode validator that ensures absence of an enrolment.
 
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    The state must have an 'offering' attribute.
 
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    """
 
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    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)
 
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        return value
 
95
 
 
96
 
 
97
class EnrolSchema(formencode.Schema):
 
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    user = formencode.All(NoEnrolmentValidator(), UserValidator())
 
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100
 
 
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class EnrolView(XHTMLView):
 
102
    """A form to enrol a user in an offering."""
 
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    template = 'templates/enrol.html'
 
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    tab = 'subjects'
 
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    permission = 'edit'
 
106
 
 
107
    def filter(self, stream, ctx):
 
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        return stream | HTMLFormFiller(data=ctx['data'])
 
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    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'])
 
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                req.store.commit()
 
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                req.throw_redirect(req.uri)
 
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            except formencode.Invalid, e:
 
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                errors = e.unpack_errors()
 
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        else:
 
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            data = {}
 
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            errors = {}
 
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126
        ctx['data'] = data or {}
 
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        ctx['offering'] = self.context
 
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        ctx['errors'] = errors
 
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class OfferingProjectsView(XHTMLView):
 
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    """View the projects for an offering."""
 
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    template = 'templates/offering_projects.html'
 
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    permission = 'edit'
 
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    tab = 'subjects'
 
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    def project_url(self, projectset, project):
 
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        return "/subjects/%s/%s/%s/+projects/%s" % (
 
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                    self.context.subject.short_name,
 
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                    self.context.semester.year,
 
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                    self.context.semester.semester,
 
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                    project.short_name
 
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                    )
 
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    def new_project_url(self, projectset):
 
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        return "/api/subjects/" + self.context.subject.short_name + "/" +\
 
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                self.context.semester.year + "/" + \
 
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                self.context.semester.semester + "/+projectsets/" +\
 
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                str(projectset.id) + "/+projects/+new"
 
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    def populate(self, req, ctx):
 
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        self.plugin_styles[Plugin] = ["project.css"]
 
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        self.plugin_scripts[Plugin] = ["project.js"]
 
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        ctx['offering'] = self.context
 
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        ctx['projectsets'] = []
 
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        #Open the projectset Fragment, and render it for inclusion
 
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        #into the ProjectSets page
 
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        #XXX: This could be a lot cleaner
 
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        loader = genshi.template.TemplateLoader(".", auto_reload=True)
 
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        set_fragment = os.path.join(os.path.dirname(__file__),
 
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                "templates/projectset_fragment.html")
 
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        project_fragment = os.path.join(os.path.dirname(__file__),
 
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                "templates/project_fragment.html")
 
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        for projectset in self.context.project_sets:
 
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            settmpl = loader.load(set_fragment)
 
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            setCtx = Context()
 
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            setCtx['projectset'] = projectset
 
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            setCtx['new_project_url'] = self.new_project_url(projectset)
 
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            setCtx['projects'] = []
 
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            for project in projectset.projects:
 
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                projecttmpl = loader.load(project_fragment)
 
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                projectCtx = Context()
 
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                projectCtx['project'] = project
 
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                projectCtx['project_url'] = self.project_url(projectset, project)
 
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179
                setCtx['projects'].append(
 
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                        projecttmpl.generate(projectCtx))
 
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182
            ctx['projectsets'].append(settmpl.generate(setCtx))
 
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184
 
 
185
class ProjectView(XHTMLView):
 
186
    """View the submissions for a ProjectSet"""
 
187
    template = "templates/project.html"
 
188
    permission = "edit"
 
189
    tab = 'subjects'
 
190
 
 
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    def build_subversion_url(self, svnroot, submission):
 
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        princ = submission.assessed.principal
 
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        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))
 
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209
    def populate(self, req, ctx):
 
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        self.plugin_styles[Plugin] = ["project.css"]
 
211
 
 
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        ctx['format_datetime_short'] = ivle.date.format_datetime_for_paragraph
 
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        ctx['build_subversion_url'] = self.build_subversion_url
 
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        ctx['svn_addr'] = req.config['urls']['svn_addr']
 
215
        ctx['project'] = self.context
 
216
        ctx['user'] = req.user
 
217
 
 
218
class OfferingEnrolmentSet(object):
 
219
    def __init__(self, offering):
 
220
        self.offering = offering
 
221
 
 
222
class Plugin(ViewPlugin, MediaPlugin):
 
223
    forward_routes = (root_to_subject, subject_to_offering,
 
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                      offering_to_project, offering_to_projectset)
 
225
    reverse_routes = (subject_url, offering_url, projectset_url, project_url)
 
226
 
 
227
    views = [(ApplicationRoot, ('subjects', '+index'), SubjectsView),
 
228
             (Offering, ('+enrolments', '+new'), EnrolView),
 
229
             (Offering, ('+projects', '+index'), OfferingProjectsView),
 
230
             (Project, '+index', ProjectView),
 
231
 
 
232
             (Offering, ('+projectsets', '+new'), OfferingRESTView, 'api'),
 
233
             (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)
70
247
    ]
 
248
 
 
249
    media = 'subject-media'