Wsrtjtyk

Since I am using Rspec to test whether my controller is working fine, I did things below:

in test_rspec.rb,

before do

  params = {

    date_begin: "2018-10-01", 

    date_end: "2018-10-05", 

    options: {country_code: "US"}

  }



  get :index, params: params, as: :json

end



it do

  expected(response).to have_http_response(200) }

end

in test_controller.rb,

def index

  puts params_checker

  render json: Test.report(params_checker[:date_begin], 

                           params_checker[:date_end],

                           params_checker[:options])

end



private

  def params_checker

    params.permit(:date_begin, :date_end, :options)

  end

when I run code with rspec command, there goes something wrong, the parameter with nested hash :options is gone! below is the output of params in terminal & some of its error info:

> {"date_begin"=>"2018-10-01", "date_end"=>"2018-10-03"}

> ArgumentError:

   wrong number of arguments (given 3, expected 2)

I search everywhere on internet and tried some of the solutions but it won`t help. I do know this error is caused by parameter missing. Could any one help me finger it out why hashes cannot be passed to controller`s params in my case?

note: I am using rails 5.1.6

after searching for lots of solutions, i got one clear way to handle it. Strong parameters handling helped me a lot.

first, if you want to pass an array or hash, whatever the parameter is, only if it is a nested parameter, you should claim it inside the params.permit() statement, and add what key is allowed to pass in , because permit only allows scalar values to pass, and filter hashes and arrays by default if the specific parameter is not claimed. code as below:

private

  def stat_params

    params.permit(:date_begin, :date_end, options: [:country_code])

  end

second, when using Rspec to test your controller, nested parameters will be passed as <ActionController::Parameters:xxxx>type, so you have to add to_unsafe_h statement to this specific parameter, as below:

def index

  render json: Test.report(stat_params[:date_begin],

                           stat_params[:date_end],

                           stat_params[:options].to_unfsafe_h)

end

this works fine for me finally.