fixed getting relationship_definitions which would not properly be us…

…ed if both models did not have a bdirectional Relationship ref, now works with dependent on single model ref (#44)

Co-authored-by: Joshua (codemation) <[email protected]>

pydbantic/core.py

@@ -486,7 +486,9 @@ def generate_relationship_table(cls, related_model: DataBaseModel, field_ref: st
 
         local_column = cls.__metadata__.tables[cls.__name__]['primary_key']
         related_column =  cls.__metadata__.tables[related_model.__name__]['primary_key']
-
+
+        relationship_definitions = cls.__metadata__.tables[name]['relationship_definitions'].get(related_model.__name__)
+
         if relationship_definitions:
             local_column = relationship_definitions['local_column']
             related_column = relationship_definitions['related_column']