Rails 4强大的参数，允许多个模型使用参数

Question

My params hash has attributes for multiple models which are all part of a collection and records must be created and tied to each other. eg

Model Collection 
  has Physical Items
  has Logical Items (takes nested attributes for logical items)
  has Locations 
   etc...

So even though my params hash is being posted to Collection Controller, it looks like

 Parameters: {"collection"=>{"client_id"=>"1",...and other collection params,  "logical_items_attributes"=>{"0"=>{"logical_item"=>"", ... other logical items attributes.}}, "item_1"=>{"item_type_id"=>"1",...},"other_loose_param_1"=>"loose_param_value".. etc...,  "commit"=>"Save"}

All these attributes must be permitted as all the records must be created as a single transaction and must be tied to each other. How can I get through strong parameters?

Answer 1

以下是答案。

params.permit!