Controller spec unknown keyword: id

Question

I have simple action show

def show
  @field = Field.find_by(params[:id])
end

and i want write spec for it

require 'spec_helper'

RSpec.describe FieldsController, type: :controller do

    let(:field) { create(:field) }

  it 'should show field' do
    get :show, id: field
    expect(response.status).to eq(200)
  end
end

but I have got an error

Failure/Error: get :show, id: field

 ArgumentError:
   unknown keyword: id

How to fix it?

Solution

HTTP request methods will accept only the following keyword arguments params, headers, env, xhr, format

According to the new API, you should use keyword arguments, params in this case:

  it 'should show field' do
    get :show, params: { id: field.id }
    expect(response.status).to eq(200)
  end

Comments

[mahi-man]

I had this error start appearing after upgrading from Rails 4.2 to Rails 5.1 and this fixed it - thanks!

[starfry]

Life Saver :) But where is this new API defined? I found this mention but it would be good to see where/when/why this change happened (if you know!)

[Humayun Naseer]

but in rails 6 im getting no routes matches