wrap_parameters.rb

# flat api params like: name=John&surnname=Doe
POST '/api/user', name: 'John', surname: 'Doe'

# nested api params like: user[name]=Jack&user[surname]=Xzbit
POST '/api/user', user: { name: 'Jack', surname: 'Xzbit' }


# how to get only params that are related to the model?

# imagine case:

POST '/api/accounts/14/user', name: 'New', surname: 'User'

params == { account_id: 14, name: 'New', surname: 'User' }

# we really don't want to assign the account_id to the new user

# wrap_parameters to the rescue!

wrap_parameters User # if User is real model and has some columns
wrap_parameters :user, include: [:name, :surname] # if we don't have proper model

#and then in the controller access it as:
params[:user] == { name: 'New', surname: 'User' }


# so when someone passes flat params, the ones set up to be wrapped (name, surname) will be wrapped to the :user param
# when someone passes nested params, the params[:user] will already include name and surname and nothing will happend