Module related

Classes

• class ForeignKey
  Provide a many-to-one relation by adding a column to the local model to hold the remote value.
• class ForeignObject
  Abstraction of the ForeignKey relation to support multi-column relations.
• class ManyToManyField
  Provide a many-to-many relation by using an intermediary model that holds two ForeignKey fields pointed at the two sides of the relation.
• class OneToOneField
  A OneToOneField is essentially the same as a ForeignKey, with the exception
• class RelatedField
  Base class that all relational fields inherit from.

Functions

• ▷ def create_many_to_many_intermediary_model(field, klass)

  source link
• ▶ def lazy_related_operation(function, model, *related_models, **kwargs)

  Schedule `function` to be called once `model` and all `related_models`

  source link

  have been imported and registered with the app registry. `function` will
  be called with the newly-loaded model classes as its positional arguments,
  plus any optional keyword arguments.
  
  The `model` argument must be a model class. Each subsequent positional
  argument is another model, or a reference to another model - see
  `resolve_relation()` for the various forms these may take. Any relative
  references will be resolved relative to `model`.
  
  This is a convenience wrapper for `Apps.lazy_model_operation` - the app
  registry model used is the one found in `model._meta.apps`.

  Reexports

  • Imported in django.contrib.contenttypes.fields.
  • Imported in django.db.models.base.
• ▶ def resolve_relation(scope_model, relation)

  Transform relation into a model or fully-qualified model string of the form "app_label.ModelName", relative to scope_model.

  source link

  The relation argument can be:
    * RECURSIVE_RELATIONSHIP_CONSTANT, i.e. the string "self", in which case
      the model argument will be returned.
    * A bare model name without an app_label, in which case scope_model's
      app_label will be prepended.
    * An "app_label.ModelName" string.
    * A model class, which will be returned unchanged.

  Reexports

  • Imported in django.db.models.base.

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