Restructured django_polymorphic into a regular add-on application.

This is needed for the management commands, and also seems
to be a generally good idea for future viablity as well.
Also misc documentation updates.

pexp/management/commands/pcmd.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+"""
+This module is a scratchpad for general development, testing & debugging
+"""
+
+from django.core.management.base import NoArgsCommand
+from django.db.models import connection
+from pprint import pprint
+import settings
+
+from pexp.models import *
+
+def reset_queries():
+    connection.queries=[]
+
+def show_queries():
+    print; print 'QUERIES:',len(connection.queries); pprint(connection.queries); print; connection.queries=[]
+    
+class Command(NoArgsCommand):
+    help = ""
+
+    def handle_noargs(self, **options):
+        print 'polycmd - sqlite test db is stored in:',settings.DATABASE_NAME
+        print
+        
+        ModelA.objects.all().delete()
+        o=ModelA.objects.create(field1='A1')
+        o=ModelB.objects.create(field1='B1', field2='B2')
+        o=ModelC.objects.create(field1='C1', field2='C2', field3='C3')
+        print ModelA.objects.all()
+        print
+
+        Project.objects.all().delete()
+        o=Project.objects.create(topic="John's gathering")
+        o=ArtProject.objects.create(topic="Sculpting with Tim", artist="T. Turner")
+        o=ResearchProject.objects.create(topic="Swallow Aerodynamics", supervisor="Dr. Winter")
+        print Project.objects.all()
+        print
+        
+
+

pexp/models.py

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+from django.db import models
+
+from polymorphic.models import PolymorphicModel, PolymorphicManager, PolymorphicQuerySet, ShowFields, ShowFieldsAndTypes
+
+
+class Project(ShowFields, PolymorphicModel):
+    topic = models.CharField(max_length=30)
+class ArtProject(Project):
+    artist = models.CharField(max_length=30)
+class ResearchProject(Project):
+    supervisor = models.CharField(max_length=30)
+
+class ModelA(PolymorphicModel):
+    field1 = models.CharField(max_length=10)
+class ModelB(ModelA):
+    field2 = models.CharField(max_length=10)
+class ModelC(ModelB):
+    field3 = models.CharField(max_length=10)

pexp/tests.py

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+"""
+This file demonstrates two different styles of tests (one doctest and one
+unittest). These will both pass when you run "manage.py test".
+
+Replace these with more appropriate tests for your application.
+"""
+
+from django.test import TestCase
+
+class SimpleTest(TestCase):
+    def test_basic_addition(self):
+        """
+        Tests that 1 + 1 always equals 2.
+        """
+        self.failUnlessEqual(1 + 1, 2)
+
+__test__ = {"doctest": """
+Another way to test that 1 + 1 is equal to 2.
+
+>>> 1 + 1 == 2
+True
+"""}
+

pexp/views.py

@@ -0,0 +1 @@
+# Create your views here.