title: Django 1.7 - Add or change a related_name argument to the definition for
body: <p>hello i trying to make django custom user model but i am getting error like this        </p>
  
  <pre><code>    auth.User.groups: (fields.E304) Reverse accessor for 'User.groups' clashes with reverse accessor for 'UserProfile.groups'.
      HINT: Add or change a related_name argument to the definition for 'User.groups' or 'UserProfile.groups'.
  auth.User.user_permissions: (fields.E304) Reverse accessor for 'User.user_permissions' clashes with reverse accessor for 'UserProfile.user_permissions'.
      HINT: Add or change a related_name argument to the definition for 'User.user_permissions' or 'UserProfile.user_permissions'.
  kerajinan.Product.author: (fields.E300) Field defines a relation with model 'settings.AUTH_USER_MODEL', which is either not installed, or is abstract.
  kerajinan.UserProfile.groups: (fields.E304) Reverse accessor for 'UserProfile.groups' clashes with reverse accessor for 'User.groups'.
      HINT: Add or change a related_name argument to the definition for 'UserProfile.groups' or 'User.groups'.
  kerajinan.UserProfile.user_permissions: (fields.E304) Reverse accessor for 'UserProfile.user_permissions' clashes with reverse accessor for 'User.user_permissions'.
      HINT: Add or change a related_name argument to the definition for 'UserProfile.user_permissions' or 'User.user_permissions'.
  </code></pre>
  
  <p>i use django 1.7 this is part of setting.py and my name apps is 'kerajinan:</p>
  
  <pre><code>AUTH_USER_MODEl = 'kerajinan.UserProfile'
  </code></pre>
  
  <p>model.py:   </p>
  
  <pre><code>class Product(models.Model):
  author          = models.ForeignKey('settings.AUTH_USER_MODEL')
  userprofile     = models.ForeignKey('UserProfile')
  title           = models.CharField(max_length=50)
  
  def __str__(self):
      return self.title;
  class MyUserManager(BaseUserManager):
      def create_user(self, username, email, password=None):
          if not email:
              raise ValueError('Users must have an email address')
          if not username:
              raise ValueError('Users must have a username')
  
          user = self.model(
              username = username,
              email    = self.normalize_email(email),
          )
          user.is_active  = True
          user.set_password(password)
          user.save(using=self._db)
          return user
  
      def create_superuser(self, username, email, password):
          user = self.create_user(username=username,email=email, password=password)
  
          user.is_staff = True
          user.is_superuser = True
          user.save(using=self._db)
          return user 
  
  class UserProfile(AbstractBaseUser, PermissionsMixin):
  
      alphanumeric = RegexValidator(r'^[0-9a-zA-Z]*$', message='Only alphanumeric characters are allowed.')
      username    = models.CharField(unique=True, max_length=20, validators=[alphanumeric])
      email       = models.EmailField(verbose_name='email address', unique=True, max_length=244)
      first_name  = models.CharField(max_length=30, null=True, blank=True)
      last_name   = models.CharField(max_length=50, null=True, blank=True)
      is_active   = models.BooleanField(default=True, null=False)
      is_staff    = models.BooleanField(default=False, null=False)
  
  
      # profile_image = models.ImageField(upload_to="uploads", blank=False, null=False, default="/static/images/defaultuserimage.jpg")
  
      objects = MyUserManager()
  
      USERNAME_FIELD  = 'email'
      REQUIRED_FIELDS = ['username']
  
      def get_full_name(self):
          fullname = self.first_name+" "+self.last_name
          return self.fullname
  
      def get_short_name(self):
          return self.username
  
      def __str__(self):
          return self.email
  </code></pre>
  
  <p>i am getting error with relation in class product part of settings.AUTH_USER_MODEL this is error:</p>
  
  <pre><code>  ERRORS:
  kerajinan.Product.author: (fields.E300) Field defines a relation with model 'settings.AUTH_USER_MODEL', which is either not installed, or is abstract.
  </code></pre>
  
  <p>can you help me solve this error?</p>