title: django.db.utils.ProgrammingError: in DJango application
body: <p>I am working with a Django application with Postgres Database.</p>
  
  <p>My models are as follows:</p>
  
  <pre><code>from django.db import models
  from django.contrib.auth.models import User as UserModel
  from dynamicforms.mangers import TextQuestionManager, MCQManager, IntegerQuestionManager
  from django.db.models.fields.related import OneToOneRel
  from django.contrib.postgres import fields as postgres_fields
  
  Qtypes = [(1, "Multiple Choice Question"), (2, "Text Question"), (3, "integer Type Question")]
  COMPS = [(True, 'Yes'), (False, 'No')]
  SECTIONS = [(1, 1), (2, 2), (3, 3), (4, 4), (5, 5)]
  
  
  class QuestionModel(models.Model):
      qtype = models.IntegerField(null=False, choices=Qtypes)
      text = models.TextField(max_length=500, null=False, blank=False)
      description = models.TextField(max_length=1000, null=True, blank=True)
      help_text = models.CharField(max_length=300, null=True, blank=True)
      is_compulsory = models.BooleanField(default=True, null=False, choices=COMPS)
  
      def __str__(self):
          return self.text
  
  
  class TextQuestionModel(QuestionModel):
      nextQ = postgres_fields.ArrayField(models.IntegerField(blank=True, null=True), null=True, blank=True)
      objects = TextQuestionManager()
  
  
  class MCQModel(QuestionModel):
      objects = MCQManager()
  
      class Meta:
          proxy = True
  
  
  class IntegerQuestionModel(QuestionModel):
      nextQ = postgres_fields.ArrayField(models.IntegerField(blank=True, null=True), null=True, blank=True)
      objects = IntegerQuestionManager()
  </code></pre>
  
  <p>I made few changes to my schema.So i have to reset my DB.I reseted my DB and migrations and when im trying to run</p>
  
  <pre><code>python manage.py makemigrations
  </code></pre>
  
  <p>I am getting this error.I tried changing db and changing user and everything.I dont understand what made this error.</p>
  
  <pre><code>Unhandled exception in thread started by &lt;_pydev_bundle.pydev_monkey._NewThreadStartupWithTrace instance at 0x7fa990057998&gt;
  Traceback (most recent call last):
    File "/opt/pycharm/helpers/pydev/_pydev_bundle/pydev_monkey.py", line 553, in __call__
      return self.original_func(*self.args, **self.kwargs)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
      fn(*args, **kwargs)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
      autoreload.raise_last_exception()
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
      six.reraise(*_exception)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
      fn(*args, **kwargs)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/__init__.py", line 27, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/apps/registry.py", line 115, in populate
      app_config.ready()
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/contrib/admin/apps.py", line 23, in ready
      self.module.autodiscover()
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover
      autodiscover_modules('admin', register_to=site)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/utils/module_loading.py", line 50, in autodiscover_modules
      import_module('%s.%s' % (app_config.name, module_to_search))
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
      __import__(name)
    File "/home/phani/Projects/Freewill/dynamicforms/admin.py", line 3, in &lt;module&gt;
      from dynamicforms.forms import MCQFormAdmin, TextFormAdmin, IntegerFormAdmin
    File "/home/phani/Projects/Freewill/dynamicforms/forms.py", line 6, in &lt;module&gt;
      QS = [(i.id, i.text) for i in QuestionModel.objects.all()]
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/models/query.py", line 256, in __iter__
      self._fetch_all()
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/models/query.py", line 1087, in _fetch_all
      self._result_cache = list(self.iterator())
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/models/query.py", line 54, in __iter__
      results = compiler.execute_sql()
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 835, in execute_sql
      cursor.execute(sql, params)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
      return super(CursorDebugWrapper, self).execute(sql, params)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
      return self.cursor.execute(sql, params)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
      six.reraise(dj_exc_type, dj_exc_value, traceback)
    File "/home/phani/Projects/Freewill/env/local/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
      return self.cursor.execute(sql, params)
  django.db.utils.ProgrammingError: relation "dynamicforms_questionmodel" does not exist
  LINE 1: ..."dynamicforms_questionmodel"."is_compulsory" FROM "dynamicfo...
                                                               ^
  </code></pre>
  
  <p>Can someone help me with this?Thanks in advance</p>