Deserializing a multiple nested dictionary while abiding unique constraints on foreign key tables

[DanielJerrehian]

Deserializing a multiple nested dictionary while abiding unique constraints on foreign key tables

[deckar01]

load_instance only queries for existing objects using the primary key. Even if you overloaded ToDoTaskSchema.get_instance() to query on the name, the schema doesn't appear to handle copying the nested task.id to task_id, so you would probably have to add a @post_load hook to ToDoSchema to test for this situation and copy it.

I suspect this behavior would be generally useful:

• Try querying unique fields when the primary key is not provided
• Propagate nested primary keys to foreign keys when instances are found