Python django.db.models.fields.related.RECURSIVE_RELATIONSHIP_CONSTANT Examples

The following are 9 code examples of django.db.models.fields.related.RECURSIVE_RELATIONSHIP_CONSTANT(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module django.db.models.fields.related , or try the search function .
Example #1
Source File: models.py    From bioforum with MIT License 5 votes vote down vote up 
def _get_model_tuple(self, remote_model, app_label, model_name):
        if remote_model == RECURSIVE_RELATIONSHIP_CONSTANT:
            return app_label, model_name.lower()
        elif '.' in remote_model:
            return tuple(remote_model.lower().split('.'))
        else:
            return app_label, remote_model.lower()
Example #2
Source File: base.py    From Hands-On-Application-Development-with-PyCharm with MIT License 5 votes vote down vote up 
def _get_model_tuple(self, remote_model, app_label, model_name):
        if remote_model == RECURSIVE_RELATIONSHIP_CONSTANT:
            return app_label, model_name.lower()
        elif '.' in remote_model:
            return tuple(remote_model.lower().split('.'))
        else:
            return app_label, remote_model.lower()
Example #3
Source File: models.py    From python with Apache License 2.0 5 votes vote down vote up 
def _get_model_tuple(self, remote_model, app_label, model_name):
        if remote_model == RECURSIVE_RELATIONSHIP_CONSTANT:
            return app_label, model_name.lower()
        elif '.' in remote_model:
            return tuple(remote_model.lower().split('.'))
        else:
            return app_label, remote_model.lower()
Example #4
Source File: models.py    From python2017 with MIT License 5 votes vote down vote up 
def _get_model_tuple(self, remote_model, app_label, model_name):
        if remote_model == RECURSIVE_RELATIONSHIP_CONSTANT:
            return app_label, model_name.lower()
        elif '.' in remote_model:
            return tuple(remote_model.lower().split('.'))
        else:
            return app_label, remote_model.lower()
Example #5
Source File: state.py    From bioforum with MIT License 4 votes vote down vote up 
def _find_reload_model(self, app_label, model_name, delay=False):
        if delay:
            self.is_delayed = True

        related_models = set()

        try:
            old_model = self.apps.get_model(app_label, model_name)
        except LookupError:
            pass
        else:
            # Get all relations to and from the old model before reloading,
            # as _meta.apps may change
            if delay:
                related_models = get_related_models_tuples(old_model)
            else:
                related_models = get_related_models_recursive(old_model)

        # Get all outgoing references from the model to be rendered
        model_state = self.models[(app_label, model_name)]
        # Directly related models are the models pointed to by ForeignKeys,
        # OneToOneFields, and ManyToManyFields.
        direct_related_models = set()
        for name, field in model_state.fields:
            if field.is_relation:
                if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
                    continue
                rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
                direct_related_models.add((rel_app_label, rel_model_name.lower()))

        # For all direct related models recursively get all related models.
        related_models.update(direct_related_models)
        for rel_app_label, rel_model_name in direct_related_models:
            try:
                rel_model = self.apps.get_model(rel_app_label, rel_model_name)
            except LookupError:
                pass
            else:
                if delay:
                    related_models.update(get_related_models_tuples(rel_model))
                else:
                    related_models.update(get_related_models_recursive(rel_model))

        # Include the model itself
        related_models.add((app_label, model_name))

        return related_models
Example #6
Source File: state.py    From Hands-On-Application-Development-with-PyCharm with MIT License 4 votes vote down vote up 
def _find_reload_model(self, app_label, model_name, delay=False):
        if delay:
            self.is_delayed = True

        related_models = set()

        try:
            old_model = self.apps.get_model(app_label, model_name)
        except LookupError:
            pass
        else:
            # Get all relations to and from the old model before reloading,
            # as _meta.apps may change
            if delay:
                related_models = get_related_models_tuples(old_model)
            else:
                related_models = get_related_models_recursive(old_model)

        # Get all outgoing references from the model to be rendered
        model_state = self.models[(app_label, model_name)]
        # Directly related models are the models pointed to by ForeignKeys,
        # OneToOneFields, and ManyToManyFields.
        direct_related_models = set()
        for name, field in model_state.fields:
            if field.is_relation:
                if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
                    continue
                rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
                direct_related_models.add((rel_app_label, rel_model_name.lower()))

        # For all direct related models recursively get all related models.
        related_models.update(direct_related_models)
        for rel_app_label, rel_model_name in direct_related_models:
            try:
                rel_model = self.apps.get_model(rel_app_label, rel_model_name)
            except LookupError:
                pass
            else:
                if delay:
                    related_models.update(get_related_models_tuples(rel_model))
                else:
                    related_models.update(get_related_models_recursive(rel_model))

        # Include the model itself
        related_models.add((app_label, model_name))

        return related_models
Example #7
Source File: state.py    From python with Apache License 2.0 4 votes vote down vote up 
def _find_reload_model(self, app_label, model_name, delay=False):
        if delay:
            self.is_delayed = True

        related_models = set()

        try:
            old_model = self.apps.get_model(app_label, model_name)
        except LookupError:
            pass
        else:
            # Get all relations to and from the old model before reloading,
            # as _meta.apps may change
            if delay:
                related_models = get_related_models_tuples(old_model)
            else:
                related_models = get_related_models_recursive(old_model)

        # Get all outgoing references from the model to be rendered
        model_state = self.models[(app_label, model_name)]
        # Directly related models are the models pointed to by ForeignKeys,
        # OneToOneFields, and ManyToManyFields.
        direct_related_models = set()
        for name, field in model_state.fields:
            if field.is_relation:
                if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
                    continue
                rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
                direct_related_models.add((rel_app_label, rel_model_name.lower()))

        # For all direct related models recursively get all related models.
        related_models.update(direct_related_models)
        for rel_app_label, rel_model_name in direct_related_models:
            try:
                rel_model = self.apps.get_model(rel_app_label, rel_model_name)
            except LookupError:
                pass
            else:
                if delay:
                    related_models.update(get_related_models_tuples(rel_model))
                else:
                    related_models.update(get_related_models_recursive(rel_model))

        # Include the model itself
        related_models.add((app_label, model_name))

        return related_models
Example #8
Source File: state.py    From openhgsenti with Apache License 2.0 4 votes vote down vote up 
def reload_model(self, app_label, model_name):
        if 'apps' in self.__dict__:  # hasattr would cache the property
            try:
                old_model = self.apps.get_model(app_label, model_name)
            except LookupError:
                related_models = set()
            else:
                # Get all relations to and from the old model before reloading,
                # as _meta.apps may change
                related_models = get_related_models_recursive(old_model)

            # Get all outgoing references from the model to be rendered
            model_state = self.models[(app_label, model_name)]
            # Directly related models are the models pointed to by ForeignKeys,
            # OneToOneFields, and ManyToManyFields.
            direct_related_models = set()
            for name, field in model_state.fields:
                if field.is_relation:
                    if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
                        continue
                    rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
                    direct_related_models.add((rel_app_label, rel_model_name.lower()))

            # For all direct related models recursively get all related models.
            related_models.update(direct_related_models)
            for rel_app_label, rel_model_name in direct_related_models:
                try:
                    rel_model = self.apps.get_model(rel_app_label, rel_model_name)
                except LookupError:
                    pass
                else:
                    related_models.update(get_related_models_recursive(rel_model))

            # Include the model itself
            related_models.add((app_label, model_name))

            # Unregister all related models
            with self.apps.bulk_update():
                for rel_app_label, rel_model_name in related_models:
                    self.apps.unregister_model(rel_app_label, rel_model_name)

            states_to_be_rendered = []
            # Gather all models states of those models that will be rerendered.
            # This includes:
            # 1. All related models of unmigrated apps
            for model_state in self.apps.real_models:
                if (model_state.app_label, model_state.name_lower) in related_models:
                    states_to_be_rendered.append(model_state)

            # 2. All related models of migrated apps
            for rel_app_label, rel_model_name in related_models:
                try:
                    model_state = self.models[rel_app_label, rel_model_name]
                except KeyError:
                    pass
                else:
                    states_to_be_rendered.append(model_state)

            # Render all models
            self.apps.render_multiple(states_to_be_rendered)
Example #9
Source File: state.py    From python2017 with MIT License 4 votes vote down vote up 
def _find_reload_model(self, app_label, model_name, delay=False):
        if delay:
            self.is_delayed = True

        related_models = set()

        try:
            old_model = self.apps.get_model(app_label, model_name)
        except LookupError:
            pass
        else:
            # Get all relations to and from the old model before reloading,
            # as _meta.apps may change
            if delay:
                related_models = get_related_models_tuples(old_model)
            else:
                related_models = get_related_models_recursive(old_model)

        # Get all outgoing references from the model to be rendered
        model_state = self.models[(app_label, model_name)]
        # Directly related models are the models pointed to by ForeignKeys,
        # OneToOneFields, and ManyToManyFields.
        direct_related_models = set()
        for name, field in model_state.fields:
            if field.is_relation:
                if field.remote_field.model == RECURSIVE_RELATIONSHIP_CONSTANT:
                    continue
                rel_app_label, rel_model_name = _get_app_label_and_model_name(field.related_model, app_label)
                direct_related_models.add((rel_app_label, rel_model_name.lower()))

        # For all direct related models recursively get all related models.
        related_models.update(direct_related_models)
        for rel_app_label, rel_model_name in direct_related_models:
            try:
                rel_model = self.apps.get_model(rel_app_label, rel_model_name)
            except LookupError:
                pass
            else:
                if delay:
                    related_models.update(get_related_models_tuples(rel_model))
                else:
                    related_models.update(get_related_models_recursive(rel_model))

        # Include the model itself
        related_models.add((app_label, model_name))

        return related_models