django.db.models.fields.related

module documentation

(source)

Undocumented

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 that it always carries a "unique" constraint with it and the reverse relation always returns the object pointed to (since there will only ever be one), rather than returning a list.
Class	`RelatedField`	Base class that all relational fields inherit from.
Function	`create_many_to_many_intermediary_model`	Undocumented
Function	`lazy_related_operation`	Schedule `function` to be called once `model` and all `related_models` 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.
Function	`resolve_relation`	Transform relation into a model or fully-qualified model string of the form "app_label.ModelName", relative to scope_model.
Constant	`RECURSIVE_RELATIONSHIP_CONSTANT`	Undocumented

def create_many_to_many_intermediary_model(field, klass): (source) ¶

Undocumented

def lazy_related_operation(function, model, *related_models, **kwargs): (source) ¶

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

def resolve_relation(scope_model, relation): (source) ¶

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

RECURSIVE_RELATIONSHIP_CONSTANT: str = (source) ¶

Undocumented

Value

'self'