为什么参数“ id”键从params [：id]变为params [：model_id]？

Question

When I go to the characters controller, show action, all the normal params[:id] is as how it should be according to REST.

In the show view, I render a partial. In that partial, I have a link that goes to the vote_socionics action. This action is defined under a socionics_votes module, which gets included by the characters controller. (I have it set up this way because I have other controllers that also include this module).

My problem is that when I click on this link, and it goes to the set_votable private method within the socionics_votes_module.rb file, the params[:id] is no longer present. Using pry, I found that it actually turns into params[:character_id]

Questions:

1) Why does this happen (is it because it goes to a "different" controller, even if it's a module?)

2) How do I work around this? I would think that it would be more elegant to have it be params[:id], instead of having to do an if-else to account for both keys.

characters_controller.rb

class CharactersController < ApplicationController
  include SocionicsVotesModule

  def show
    @character = Character.find(params[:id])
  end

characters/show.html.haml

= render partial: 'votes/vote_socionics', 
  locals: { votable: @votable, votable_name: @votable_name, socionics: @socionics }

_vote_socionics.html.haml

= link_to content_tag(:div,"a"), send("#{votable_name}_vote_socionics_path", votable, vote_type: "#{s.type_two_im_raw}"), 
          id: "vote-#{s.type_two_im_raw}", 
          class: "#{current_user.voted_on?(votable) ? 'voted' : 'not-voted'}",
          method: :post, 
          data: { id: "#{s.type_two_im_raw}" } 

socionics_votes_module.rb

module SocionicsVotesController
  extend ActiveSupport::Concern

  included do
    before_action :set_votable
  end

  private
    def set_votable
      votable_constant = controller_name.singularize.camelize.constantize
      @votable = votable_constant.find(params[:id])    # This is where it fails, since there is no params[:id], and rather, params[:character_id]
    end

    def set_votable_name
      @votable_name = controller_name.singularize.downcase
    end

routes.rb

concern :socionics_votes do
  post 'vote_socionics'
end

resources :characters, concerns: :socionics_votes
resources :celebrities, concerns: :socionics_votes
resources :users, concerns: :socionics_votes

The URL of the link in the partial when hovered over.

localhost..../characters/4-cc/vote_socionics?vote_type=neti

Something like .find(params[:id] || params[:"#{@votable_name}_id"]) didn't work, and seems silly.

Answer 1

You need to add the vote_socionics route as a member of the resource:

concern :socionics_votes do
  member do
    post 'vote_socionics'
  end 
end

This way the id parameter gets set correctly