Merge pull request #61 from zhaospei/lms

add resource course views

dmoj/urls.py

@@ -492,7 +492,39 @@ urlpatterns = [
         ),
     ),
     url(r"^contests/", paged_list_view(contests.ContestList, "contest_list")),
-    url(r"^course/", paged_list_view(course.CourseList, "course_list")),
+    url(r"^courses/", paged_list_view(course.CourseList, "course_list")),
+    url(
+        r"^courses/(?P<pk>\d+)-(?P<slug>[\w-]*)",
+        include(
+            [
+                url(
+                    r"^$",
+                    course.CourseHome.as_view(),
+                    name="course_home",
+                ),
+                url(
+                    r"^/resource/$",
+                    course.CourseResourceList.as_view(),
+                    name="course_resource",
+                ),
+                url(
+                    r"^/resource_edit/$",
+                    course.CourseResourceEdit.as_view(),
+                    name="course_resource_edit",
+                ),
+                url(
+                    r"^/resource/(?P<pk>\d+)/$",
+                    course.CourseResouceDetail.as_view(),
+                    name="course_resource_detail",
+                ),
+                url(
+                    r"^/resource/(?P<pk>\d+)/edit",
+                    course.CourseResourceDetailEdit.as_view(),
+                    name="course_resource_detail_edit",
+                ),
+            ]
+        ),
+    ),
     url(
         r"^contests/(?P<year>\d+)/(?P<month>\d+)/$",
         contests.ContestCalendar.as_view(),

judge/admin/__init__.py

@@ -42,6 +42,8 @@ from judge.models import (
     Course,
 )
 
+from judge.models.course import CourseResource
+
 
 admin.site.register(BlogPost, BlogPostAdmin)
 admin.site.register(Comment, CommentAdmin)
@@ -66,3 +68,4 @@ admin.site.register(Submission, SubmissionAdmin)
 admin.site.register(Ticket, TicketAdmin)
 admin.site.register(VolunteerProblemVote, VolunteerProblemVoteAdmin)
 admin.site.register(Course)
+admin.site.register(CourseResource)

judge/models/course.py

@@ -58,9 +58,7 @@ class Course(models.Model):
         return self.name
 
     @classmethod
-    def is_editable_by(course, profile):
-        if profile.is_superuser:
-            return True
+    def is_editable_by(cls, course, profile):
         userquery = CourseRole.objects.filter(course=course, user=profile)
         if userquery.exists():
             if userquery[0].role == "AS" or userquery[0].role == "TE":
@@ -68,7 +66,7 @@ class Course(models.Model):
         return False
 
     @classmethod
-    def is_accessible_by(cls,course, profile):
+    def is_accessible_by(cls, course, profile):
         userqueryset = CourseRole.objects.filter(course=course, user=profile)
         if userqueryset.exists():
             return True
@@ -76,35 +74,35 @@ class Course(models.Model):
             return False
 
     @classmethod
-    def get_students(cls,course):
+    def get_students(cls, course):
         return CourseRole.objects.filter(course=course, role="ST").values("user")
 
     @classmethod
-    def get_assistants(cls,course):
+    def get_assistants(cls, course):
         return CourseRole.objects.filter(course=course, role="AS").values("user")
 
     @classmethod
-    def get_teachers(cls,course):
+    def get_teachers(cls, course):
         return CourseRole.objects.filter(course=course, role="TE").values("user")
 
     @classmethod
-    def add_student(cls,course, profiles):
+    def add_student(cls, course, profiles):
         for profile in profiles:
             CourseRole.make_role(course=course, user=profile, role="ST")
 
     @classmethod
-    def add_teachers(cls,course, profiles):
+    def add_teachers(cls, course, profiles):
         for profile in profiles:
             CourseRole.make_role(course=course, user=profile, role="TE")
 
     @classmethod
-    def add_assistants(cls,course, profiles):
+    def add_assistants(cls, course, profiles):
         for profile in profiles:
             CourseRole.make_role(course=course, user=profile, role="AS")
 
 
 class CourseRole(models.Model):
-    course = models.OneToOneField(
+    course = models.ForeignKey(
         Course,
         verbose_name=_("course"),
         on_delete=models.CASCADE,
@@ -142,7 +140,7 @@ class CourseRole(models.Model):
 
 
 class CourseResource(models.Model):
-    course = models.OneToOneField(
+    course = models.ForeignKey(
         Course,
         verbose_name=_("course"),
         on_delete=models.CASCADE,
@@ -165,15 +163,18 @@ class CourseResource(models.Model):
         default=False,
     )
 
+    def __str__(self):
+        return f"Resource - {self.pk}"
+
 
 class CourseAssignment(models.Model):
-    course = models.OneToOneField(
+    course = models.ForeignKey(
         Course,
         verbose_name=_("course"),
         on_delete=models.CASCADE,
         db_index=True,
     )
-    contest = models.OneToOneField(
+    contest = models.ForeignKey(
         Contest,
         verbose_name=_("contest"),
         on_delete=models.CASCADE,

judge/views/course.py

@@ -1,6 +1,22 @@
-from django.db import models
-from judge.models.course import Course
-from django.views.generic import ListView
+from django.forms import ModelForm
+from django.contrib.auth.mixins import LoginRequiredMixin
+from django.views.generic.edit import UpdateView
+from judge.models.course import Course, CourseResource
+from django.views.generic import ListView, UpdateView, DetailView
+from judge.views.feed import FeedView
+from django.http import (
+    Http404,
+    HttpResponsePermanentRedirect,
+    HttpResponseRedirect,
+)
+
+from django.shortcuts import get_object_or_404
+from django.utils.translation import gettext as _
+from judge.utils.views import (
+    generic_message,
+)
+from django.urls import reverse_lazy
+from django.contrib import messages
 
 __all__ = [
     "CourseList",
@@ -13,19 +29,181 @@ __all__ = [
     "CourseResourceEdit",
 ]
 
-course_directory_file = ""
+
+class CourseBase(object):
+    def is_editable_by(self, course=None):
+        if course is None:
+            course = self.object
+        if self.request.profile:
+            return Course.is_editable_by(course, self.request.profile)
+        return False
+
+    def is_accessible_by(self, course):
+        if course is None:
+            course = self.object
+        if self.request.profile:
+            return Course.is_accessible_by(course, self.request.profile)
+        return False
+
+
+class CourseMixin(CourseBase):
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["can_edit"] = self.is_editable_by(self.course)
+        context["can access"] = self.is_accessible_by(self.course)
+        context["course"] = self.course
+        return context
+
+    def dispatch(self, request, *args, **kwargs):
+        print(self)
+        try:
+            self.course_id = int(kwargs["pk"])
+            self.course = get_object_or_404(Course, id=self.course_id)
+        except Http404:
+            key = None
+            if hasattr(self, "slug_url_kwarg"):
+                key = kwargs.get(self.slug_url_kwarg, None)
+            if key:
+                return generic_message(
+                    request,
+                    _("No such course"),
+                    _('Could not find a course with the key "%s".') % key,
+                )
+            else:
+                return generic_message(
+                    request,
+                    _("No such course"),
+                    _("Could not find such course."),
+                )
+        if self.course.slug != kwargs["slug"]:
+            return HttpResponsePermanentRedirect(
+                request.get_full_path().replace(kwargs["slug"], self.course.slug)
+            )
+
+        return super(CourseMixin, self).dispatch(request, *args, **kwargs)
+
+
+class CourseHomeView(CourseMixin):
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        if not hasattr(self, "course"):
+            self.course = self.object
+        return context
+
+
+class CourseHome(CourseHomeView, FeedView):
+    template_name = "course/home.html"
+
+    def get_queryset(self):
+        return CourseResource.objects.filter(
+            is_public=True,
+            course=self.course,
+        ).order_by("order")
+
+    def get_context_data(self, **kwargs):
+        context = super(CourseHome, self).get_context_data(**kwargs)
+        context["title"] = self.course.name
+        context["description"] = self.course.about
+        return context
+
+
+class CourseResourceList(CourseMixin, ListView):
+    template_name = "course/resource.html"
+
+    def get_queryset(self):
+        return CourseResource.objects.filter(
+            is_public=True,
+            course=self.course,
+        ).order_by("order")
+
+    def get_context_data(self, **kwargs):
+        context = super(CourseResourceList, self).get_context_data(**kwargs)
+        context["title"] = self.course.name
+
+        return context
+
+
+class CourseResouceDetail(DetailView):
+    template_name = "course/resource-content.html"
+    model = CourseResource
+
+    def get_context_data(self, **kwargs):
+        context = super(CourseResouceDetail, self).get_context_data(**kwargs)
+        return context
+
+
+class CourseAdminMixin(CourseMixin):
+    def dispatch(self, request, *args, **kwargs):
+        res = super(CourseAdminMixin, self).dispatch(request, *args, **kwargs)
+        if not hasattr(self, "course") or self.is_editable_by(self.course):
+            return res
+        return generic_message(
+            request,
+            _("Can't edit course"),
+            _("You are not allowed to edit this course."),
+            status=403,
+        )
+
+
+class CourseResourceDetailEditForm(ModelForm):
+    def __init__(self, *args, **kwargs):
+        super(CourseResourceDetailEditForm, self).__init__(*args, **kwargs)
+
+
+class CourseResourceDetailEdit(LoginRequiredMixin, UpdateView):
+    template_name = "course/resource_detail_edit.html"
+    model = CourseResource
+    fields = ["description", "files", "is_public"]
+
+    def get_success_url(self):
+        return self.request.get_full_path()
+
+    def form_valid(self, form):
+        form.save()
+        return super().form_valid(form)
+
+
+class CourseResourceEdit(CourseMixin, LoginRequiredMixin, ListView):
+    template_name = "course/resource_edit.html"
+
+    def get_queryset(self):
+        return CourseResource.objects.filter(
+            course=self.course,
+        ).order_by("order")
+
+    def post(self, request, *args, **kwargs):
+        queryset = self.get_queryset()
+        for resource in queryset:
+            if request.POST.get("resource-" + str(resource.pk) + "-delete") != None:
+                resource.delete()
+            else:
+                if request.POST.get("resource-" + str(resource.pk) + "-public") != None:
+                    resource.is_public = True
+                else:
+                    resource.is_public = False
+                resource.order = request.POST.get(
+                    "resource-" + str(resource.pk) + "-order"
+                )
+                resource.save()
+        return HttpResponseRedirect(request.path)
+
+    def get_context_data(self, **kwargs):
+        return super(CourseResourceEdit, self).get_context_data(**kwargs)
+
 
 class CourseListMixin(object):
     def get_queryset(self):
-        return Course.objects.filter(is_open = "true").values()
+        return Course.objects.filter(is_open="true").values()
+
 
 class CourseList(ListView):
     model = Course
     template_name = "course/list.html"
     queryset = Course.objects.filter(is_public=True).filter(is_open=True)
+
     def get_context_data(self, **kwargs):
-        context = super(CourseList,self).get_context_data(**kwargs)
-        available , enrolling = [] , []
+        context = super(CourseList, self).get_context_data(**kwargs)
+        available, enrolling = [], []
         for course in Course.objects.filter(is_public=True).filter(is_open=True):
             if Course.is_accessible_by(course, self.request.profile):
                 enrolling.append(course)
@@ -34,4 +212,3 @@ class CourseList(ListView):
         context["available"] = available
         context["enrolling"] = enrolling
         return context
-    

templates/course/home.html

@@ -0,0 +1,4 @@
+<h1> {{ title }} - Home </h1>
+<h2> About: {{ description }} </h2>
+
+<a href="/courses/{{ course.pk }}-{{ course.slug }}/resource"> See course resource.</a>

templates/course/list.html

@@ -1,19 +1,30 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Document</title>
 </head>
+
 <body>
     <h1>Enrolling</h1>
+    <ul>
         {% for course in enrolling %}
-        <h2> {{ course }} </h2>
+        <li>
+            <a href="/courses/{{ course.pk }}-{{ course.slug }}"> {{ course }} </a>
+        </li>
         {% endfor %}
+    </ul>
     <h1> Available </h1>
+    <ul>
         {% for course in available %}
-        <h2> {{ course }} </h2>
+        <li>
+            <a href="/courses/{{ course.pk }}-{{ course.slug }}"> {{ course }} </a>
+        </li>
         {% endfor %}
+    </ul>
 </body>
+
 </html>

templates/course/resource-content.html

@@ -0,0 +1,12 @@
+<h1> {{ object }} </h1>
+<h2> This resource belong to {{ object.course }}</h2>
+
+<h3> {{ object.description }}</h3>
+
+<div>
+    {% if object.files != None %}
+        <div> <a href="{{ object.files.url}}" target="_blank"> See files </a> </div>
+    {% endif %}
+    <div> <a href="/courses/{{ object.course.pk }}-{{ object.course.slug }}/resource/{{ object.pk }}/edit"> Edit
+            Resource </a> </div>
+</div>

templates/course/resource.html

@@ -0,0 +1,11 @@
+<h1> {{ course.name }}'s Resource </h1>
+
+<ul>
+    {% for resource in object_list %}
+        <li> 
+            <a href="/courses/{{ course.pk }}-{{ course.slug }}/resource/{{ resource.pk }}"> {{ resource }} </a> 
+        </li>
+    {% endfor %}
+</ul>
+
+<a href="/courses/{{ course.pk }}-{{ course.slug }}/resource_edit"> Edit resources</a>

templates/course/resource_detail_edit.html

@@ -0,0 +1,5 @@
+<form method="post" enctype="multipart/form-data">
+    {% csrf_token %}
+    {{ form }}
+    <input type="submit" value="Update">
+</form>

templates/course/resource_edit.html

@@ -0,0 +1,33 @@
+{{ course }}
+
+<form id="resource-form" method="post" action="">
+    {% csrf_token %}
+    <table>
+        <tr>
+            <th>Name</th>
+            <th>Delete</th>
+            <th>Order</th>
+            <th>Public</th>
+            <th>Edit link</th>
+        </tr>
+        {% for resource in object_list %}
+        <tr>
+            <td> {{ resource }} </td>
+            <td> <input type="checkbox" name="resource-{{ resource.pk }}-delete" id="resource-{{ resource.pk }}-delete">
+            </td>
+            <td> <input type="number" name="resource-{{ resource.pk }}-order" value="{{
+                resource.order }}" id="resource-{{ resource.pk }}-order"> </a></td>
+            {% if resource.is_public %}
+            <td> <input type="checkbox" name="resource-{{ resource.pk }}-public" id="resource-{{ resource.pk }}-public"
+                    checked=""> </a></td>
+            {% else %}
+            <td> <input type="checkbox" name="resource-{{ resource.pk }}-public" id="resource-{{ resource.pk }}-public">
+                </a></td>
+            {% endif %}
+            <td> <a href="/courses/{{ course.pk }}-{{ course.slug }}/resource/{{ resource.pk }}/edit"> Edit </a></td>
+        </tr>
+        {% endfor %}
+    </table>
+
+    <button type="submit">Save</button>
+</form>