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

  • Committer: William Grant
  • Date: 2009-08-02 08:43:33 UTC
  • mto: (1294.2.118 ui-the-third)
  • mto: This revision was merged to the branch mainline in revision 1353.
  • Revision ID: grantw@unimelb.edu.au-20090802084333-j733m80q8hkrluaz
req.router -> req.publisher

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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, MediaPlugin
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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 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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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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    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['enrolments'] = req.user.active_enrolments
 
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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
 
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class EnrolSchema(formencode.Schema):
 
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    user = formencode.All(NoEnrolmentValidator(), UserValidator())
 
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class EnrolView(XHTMLView):
 
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    """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'
 
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    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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        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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                setCtx['projects'].append(
 
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                        projecttmpl.generate(projectCtx))
 
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            ctx['projectsets'].append(settmpl.generate(setCtx))
 
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class ProjectView(XHTMLView):
 
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    """View the submissions for a ProjectSet"""
 
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    template = "templates/project.html"
 
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    permission = "edit"
 
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    tab = 'subjects'
 
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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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    def populate(self, req, ctx):
 
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        self.plugin_styles[Plugin] = ["project.css"]
 
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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']
 
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        ctx['project'] = self.context
 
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        ctx['user'] = req.user
 
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class OfferingEnrolmentSet(object):
 
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    def __init__(self, offering):
 
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        self.offering = offering
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class Plugin(ViewPlugin, MediaPlugin):
48
 
    urls = [
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        ('subjects/', SubjectsView),
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    ]
 
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    forward_routes = (root_to_subject, subject_to_offering,
 
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                      offering_to_project, offering_to_projectset)
 
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    reverse_routes = (subject_url, offering_url, projectset_url, project_url)
 
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    views = [(ApplicationRoot, ('subjects', '+index'), SubjectsView),
 
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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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             (Offering, ('+projectsets', '+new'), OfferingRESTView, 'api'),
 
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             (ProjectSet, ('+projects', '+new'), ProjectSetRESTView, 'api'),
 
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             (Project, '+index', ProjectRESTView, 'api'),
 
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             ]
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    tabs = [
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        ('subjects', 'Subjects',