Went on a coding binge and added api support for all new model objects.

backend/RateMyCourse/urls.py

@@ -19,7 +19,10 @@ from django.urls import re_path,path,include
 from . import views
 
 urlpatterns = [
+    # / Shows the main index page of the website.
     path('', views.index, name='index'),
+    # /universities/1/ Shows the page for a university.
+    # TODO: add pages for each rateable entity.
     path('admin/', admin.site.urls),
     re_path(r'^api/postings/', include(('postings.api.urls','postings'), namespace='api-postings')),
 ]

backend/postings/admin.py

@@ -1,6 +1,12 @@
 from django.contrib import admin
 
-from .models import UniversityReview
+from .models import *
 
 # Register your models here.
-admin.site.register(UniversityReview)
+admin.site.register(UniversityReview)
+admin.site.register(Review)
+admin.site.register(RateableEntity)
+admin.site.register(ReviewHelpfulVote)
+admin.site.register(University)
+admin.site.register(Professor)
+admin.site.register(Course)

backend/postings/api/serializers.py

@@ -1,5 +1,5 @@
 from rest_framework import serializers
-from postings.models import UniversityReview
+from postings.models import *
 
 
 class UniversityReviewSerializer(serializers.ModelSerializer):
@@ -16,4 +16,62 @@ class UniversityReviewSerializer(serializers.ModelSerializer):
 		read_only_fields =[
 			'pk',
 			'username'
+		]
+
+# Serializes the generic Review object.
+class ReviewSerializer(serializers.ModelSerializer):
+	class Meta:
+		model = Review
+		fields = [
+			'pk',
+			'rating',
+			'title',
+			'content',
+			'rateable_entity',
+			'created_date',
+			'last_updated_date'
+		]
+		read_only_fields = [
+			'pk',
+			'created_date',
+			'rateable_entity'
+		]
+
+# Serializes Universities.
+class UniversitySerializer(serializers.ModelSerializer):
+	class Meta:
+		model = University
+		fields = [
+			'pk',
+			'name'
+		]
+		read_only_fields = [
+			'pk'
+		]
+
+# Serializes Courses.
+class CourseSerializer(serializers.ModelSerializer):
+	class Meta:
+		model = Course
+		fields = [
+			'pk',
+			'name',
+			'taught_at_university',
+			'professors'
+		]
+		read_only_fields = [
+			'pk'
+		]
+
+# Serializes Professors.
+class ProfessorSerializer(serializers.ModelSerializer):
+	class Meta:
+		model = Professor
+		fields = [
+			'pk',
+			'name',
+			'universities'
+		]
+		read_only_fields = [
+			'pk'
 		]

backend/postings/api/urls.py

@@ -1,11 +1,31 @@
-from .views import UniReviewRudView,UniReviewAPIView
-from django.urls import re_path
+from .views import *
+from django.urls import path, re_path
 
 
 
 
 urlpatterns = [
+	# /api/postings/reviews/ Lists all review objects.
+	path('reviews/', ReviewsView.as_view(), name='reviews'),
+	# /api/postings/reviews/1/ Returns data for one Review.
+	path('reviews/<int:pk>', ReviewView.as_view(), name='review'),
 
+	# /api/postings/universities/ Lists all university objects.
+	path('universities/', UniversitiesView.as_view(), name='universities'),
+	# /api/postings/universities/1/ Returns data for one University.
+	path('universities/<int:pk>', UniversityView.as_view(), name='university'),
+
+	# /api/postings/courses/ Lists all course objects.
+	path('courses/', CoursesView.as_view(), name='courses'),
+	# /api/postings/courses/1/ Returns data for one Course.
+	path('courses/<int:pk>', CourseView.as_view(), name='course'),
+
+	# /api/postings/professors/ Lists all professor objects.
+	path('professors/', ProfessorsView.as_view(), name='professors'),
+	# /api/postings/professors/1/ Returns data for one Professor.
+	path('professors/<int:pk>', ProfessorView.as_view(), name='professor'),
+	
+	# Deprecated
 	re_path(r'^(?P<pk>\d+)/$', UniReviewRudView.as_view(), name='post-rud'),
 	re_path(r'^$', UniReviewAPIView.as_view(), name='post-create')
 ]

backend/postings/api/views.py

@@ -1,6 +1,6 @@
 from rest_framework import generics, mixins
-from postings.models import UniversityReview
-from .serializers import UniversityReviewSerializer
+from postings.models import UniversityReview, Review
+from .serializers import *
 from django.db.models import Q
 
 
@@ -26,3 +26,43 @@ class UniReviewAPIView(mixins.CreateModelMixin, generics.ListAPIView):
 
 	def post(self,request,*args,**kwargs):
 		return self.create(request, *args, **kwargs)
+
+# The view for listing all generic Review objects.
+class ReviewsView(mixins.CreateModelMixin, generics.ListAPIView):
+	queryset = Review.objects.all()
+	serializer_class = ReviewSerializer
+
+# View for an individual Review object.
+class ReviewView(generics.RetrieveUpdateDestroyAPIView):
+	queryset = Review.objects.all()
+	serializer_class = ReviewSerializer
+
+# The view for listing all Universities.
+class UniversitiesView(generics.ListAPIView):
+	serializer_class = UniversitySerializer
+	queryset = University.objects.all()
+
+# The view for an individual University.
+class UniversityView(generics.RetrieveUpdateDestroyAPIView):
+	queryset = University.objects.all()
+	serializer_class = UniversitySerializer
+
+# The view for listing all Courses.
+class CoursesView(generics.ListAPIView):
+	serializer_class = CourseSerializer
+	queryset = Course.objects.all()
+
+# The view for an individual Course.
+class CourseView(generics.RetrieveUpdateDestroyAPIView):
+	queryset = Course.objects.all()
+	serializer_class = CourseSerializer
+
+# The view for listing all Professors.
+class ProfessorsView(generics.ListAPIView):
+	queryset = Professor.objects.all()
+	serializer_class = ProfessorSerializer
+
+# The view for an individual Professor.
+class ProfessorView(generics.RetrieveUpdateDestroyAPIView):
+	queryset = Professor.objects.all()
+	serializer_class = ProfessorSerializer

backend/postings/migrations/0004_auto_20180925_1941.py

@@ -0,0 +1,81 @@
+# Generated by Django 2.1.1 on 2018-09-25 19:41
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('postings', '0003_universityreview_title'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RateableEntity',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=256)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Review',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('rating', models.IntegerField(default=1)),
+                ('title', models.CharField(max_length=128)),
+                ('content', models.TextField()),
+                ('created_date', models.DateTimeField(auto_now_add=True)),
+                ('last_updated_date', models.DateTimeField(auto_now=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='ReviewHelpfulVote',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('helpful', models.BooleanField()),
+                ('review', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='postings.Review')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Course',
+            fields=[
+                ('rateableentity_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='postings.RateableEntity')),
+            ],
+            bases=('postings.rateableentity',),
+        ),
+        migrations.CreateModel(
+            name='Professor',
+            fields=[
+                ('rateableentity_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='postings.RateableEntity')),
+            ],
+            bases=('postings.rateableentity',),
+        ),
+        migrations.CreateModel(
+            name='University',
+            fields=[
+                ('rateableentity_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='postings.RateableEntity')),
+            ],
+            bases=('postings.rateableentity',),
+        ),
+        migrations.AddField(
+            model_name='review',
+            name='rateable_entity',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='postings.RateableEntity'),
+        ),
+        migrations.AddField(
+            model_name='professor',
+            name='university',
+            field=models.ManyToManyField(to='postings.University'),
+        ),
+        migrations.AddField(
+            model_name='course',
+            name='professors',
+            field=models.ManyToManyField(to='postings.Professor'),
+        ),
+        migrations.AddField(
+            model_name='course',
+            name='taught_at_university',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='postings.University'),
+        ),
+    ]

backend/postings/migrations/0005_auto_20180925_2032.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1.1 on 2018-09-25 20:32
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('postings', '0004_auto_20180925_1941'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='professor',
+            old_name='university',
+            new_name='universities',
+        ),
+    ]

backend/postings/models.py

@@ -35,7 +35,7 @@ class University(RateableEntity):
 # A RateableEntity for professors, who belong to one or more university.
 class Professor(RateableEntity):
 	# The universities that this professor teaches or has taught at.
-	university = models.ManyToManyField('postings.University')
+	universities = models.ManyToManyField('postings.University')
 
 # A RateableEntity for courses, which belong to a university, and have one or more professors.
 class Course(RateableEntity):