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Sqlite db manager12/18/2023 ![]() If allow_migrate() returns False, any migration operations for the Makemigrations always creates migrations for model changes, but This method can also be used to determine the availability of a model on a Note that it may be a historical model, and thus not have any custom attributes, methods, or When model_name is set, hints normally contains the model class Hints are used by certain operations to communicate additional Model._meta.model_name (the lowercased version of the model Model_name is set by most migration operations to the value of The app_label positional argument is the label of the application Shouldn’t run, or None if the router has no opinion. Return True if the operation should run, False if it allow_migrate( db, app_label, model_name = None, ** hints) ¶ĭetermine if the migration operation is allowed to run on the database withĪlias db. Relations within the same database are allowed. Relation should be allowed between two objects. Used by foreign key and many to many operations to determine if a Return True if a relation between obj1 and obj2 should beĪllowed, False if the relation should be prevented, or None if Suggest the database that should be used for writes of objects of Information that might assist in selecting a database, it will be If a database operation is able to provide any additional ![]() ![]() Suggest the database that should be used for read operations for A database Router is a class that provides up to four methods: db_for_read( model, ** hints) ¶ ![]()
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