Package django :: Package contrib :: Package contenttypes :: Module models :: Class ContentTypeManager

Class ContentTypeManager

db.models.Manager --+
                    |
                   ContentTypeManager

Instance Methods

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get_for_model(self, model)
Returns the ContentType object for a given model, creating the ContentType if necessary.

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get_for_id(self, id)
Lookup a ContentType by ID.

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clear_cache(self)
Clear out the content-type cache.

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_add_to_cache(self, ct)
Insert a ContentType into the cache.

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Class Variables

[hide private]

_cache = {}

Method Details

[hide private]

get_for_model(self, model)

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Returns the ContentType object for a given model, creating the ContentType if necessary. Lookups are cached so that subsequent lookups for the same model don't hit the database.

get_for_id(self, id)

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Lookup a ContentType by ID. Uses the same shared cache as get_for_model (though ContentTypes are obviously not created on-the-fly by get_by_id).

clear_cache(self)

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Clear out the content-type cache. This needs to happen during database flushes to prevent caching of "stale" content type IDs (see django.contrib.contenttypes.management.update_contenttypes for where this gets called).