HasKeys

This class provides a lookup operator for PostgreSQL fields to determine if a collection contains a specific set of keys. It maps to the PostgreSQL "?&" operator and ensures that the right-hand side values are processed as a list of strings during the lookup preparation.

Attributes

Attribute	Type	Description
lookup_name	string = has_keys	The identifier used in Django ORM queries to invoke this specific lookup, set to "has_keys".
postgres_operator	string = ?&	The specific PostgreSQL operator used in the generated SQL to check if all specified keys exist in a JSONB column.

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Constructor

Signature

def HasKeys()

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Methods

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get_prep_lookup()

@classmethod
def get_prep_lookup() - > list

Prepares the right-hand side values for the database query by converting each item in the collection to its string representation.

Returns

Type	Description
list	A list of strings representing the keys to be checked for existence within the JSONB field.

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