1.2.2.1.1. database

1.2.2.1.1.1. Functions

sa_get_relationship(session, model, name)

Resolve the relationship on a SQLAlchemy model to either an object (in the case of one-to-one relationships) or a query to all of the objects (in the case of one-to-many relationships).

Parameters:

• session – The SQLAlchemy session to associate the query with.
• model – The SQLAlchemy model of the object associated with the relationship.
• name – The name of the relationship as it exists in the model.

Returns:

Either the object or a SQLAlchemy query for the objects.

sa_object_resolver(attname, default_value, model, info, **kwargs)

Resolve the attribute for the given SQLAlchemy model object. If the attribute is a relationship, use sa_get_relationship() to resolve it.

Parameters:

• attname (str) – The name of the attribute to resolve on the object.
• default_value – The default value to return if the attribute is unavailable.
• model (sqlalchemy.ext.declarative.api.Base) – The SQLAlchemy model to resolve the attribute for.
• info (graphql.execution.base.ResolveInfo) – The resolve information for this execution.