Use just one action to hide users

Other than removing a redundant action, we're fixing two bugs when
blocking an author using the links in the public views:

* We were always redirecting to the debates index, even if we blocked
  the author of a proposal or an investment
* We weren't showing any kind of success message

app/controllers/moderation/users_controller.rb

@@ -6,16 +6,10 @@ class Moderation::UsersController < Moderation::BaseController
   def index
   end
 
-  def hide_in_moderation_screen
-    block_user
-
-    redirect_with_query_params_to({ action: :index }, { notice: I18n.t("moderation.users.notice_hide") })
-  end
-
   def hide
     block_user
 
-    redirect_to debates_path
+    redirect_with_query_params_to index_path_options, { notice: I18n.t("moderation.users.notice_hide") }
   end
 
   private
@@ -28,4 +22,17 @@ class Moderation::UsersController < Moderation::BaseController
       @user.block
       Activity.log(current_user, :block, @user)
     end
+
+    def index_path_options
+      if request.referer
+        referer_params = Rails.application.routes.recognize_path(request.referer)
+
+        referer_params.except(:id).merge({
+          controller: "/#{referer_params[:controller]}",
+          action: :index
+        })
+      else
+        { action: :index }
+      end
+    end
 end

app/models/ability.rb

@@ -2,10 +2,6 @@ class Ability
   include CanCan::Ability
 
   def initialize(user)
-    # If someone can hide something, he can also hide it
-    # from the moderation screen
-    alias_action :hide_in_moderation_screen, to: :hide
-
     if user # logged-in users
       merge Abilities::Valuator.new(user) if user.valuator?
 

app/views/moderation/users/index.html.erb

@@ -23,7 +23,7 @@
               <% else %>
                 <%= render Admin::TableActionsComponent.new(user, actions: []) do |actions| %>
                   <%= actions.action(
-                    :hide_in_moderation_screen,
+                    :hide,
                     text: t("moderation.users.index.hide"),
                     method: :put,
                     class: "button hollow alert"

config/routes/moderation.rb

@@ -4,7 +4,6 @@ namespace :moderation do
   resources :users, only: :index do
     member do
       put :hide
-      put :hide_in_moderation_screen
     end
   end
 

spec/controllers/moderation/users_controller_spec.rb

@@ -2,14 +2,32 @@ require "rails_helper"
 
 describe Moderation::UsersController do
   before { sign_in create(:moderator).user }
+  let(:user) { create(:user, email: "user@consul.dev") }
 
-  describe "PUT hide_in_moderation_screen" do
+  describe "PUT hide" do
     it "keeps query parameters while using protected redirects" do
-      user = create(:user, email: "user@consul.dev")
-
-      get :hide_in_moderation_screen, params: { id: user, search: "user@consul.dev", host: "evil.dev" }
+      get :hide, params: { id: user, search: "user@consul.dev", host: "evil.dev" }
 
       expect(response).to redirect_to "/moderation/users?search=user%40consul.dev"
     end
+
+    it "redirects to the index of the section where it was called with a notice" do
+      proposal = create(:proposal, author: user)
+      request.env["HTTP_REFERER"] = proposal_path(proposal)
+
+      put :hide, params: { id: user }
+
+      expect(response).to redirect_to proposals_path
+      expect(flash[:notice]).to eq "User blocked. All of this user's debates and comments have been hidden."
+    end
+
+    it "redirects to the index with a nested resource" do
+      investment = create(:budget_investment, author: user)
+      request.env["HTTP_REFERER"] = budget_investment_path(investment.budget, investment)
+
+      put :hide, params: { id: user }
+
+      expect(response).to redirect_to budget_investments_path(investment.budget)
+    end
   end
 end

spec/models/abilities/moderator_spec.rb

@@ -52,7 +52,6 @@ describe Abilities::Moderator do
     let(:ignored_proposal) { create(:proposal, :with_ignored_flag) }
 
     it { should be_able_to(:hide, comment) }
-    it { should be_able_to(:hide_in_moderation_screen, comment) }
     it { should_not be_able_to(:hide, hidden_comment) }
     it { should be_able_to(:hide, own_comment) }
 
@@ -60,12 +59,10 @@ describe Abilities::Moderator do
     it { should_not be_able_to(:moderate, own_comment) }
 
     it { should be_able_to(:hide, debate) }
-    it { should be_able_to(:hide_in_moderation_screen, debate) }
     it { should_not be_able_to(:hide, hidden_debate) }
     it { should_not be_able_to(:hide, own_debate) }
 
     it { should be_able_to(:hide, proposal) }
-    it { should be_able_to(:hide_in_moderation_screen, proposal) }
     it { should be_able_to(:hide, own_proposal) }
     it { should_not be_able_to(:hide, hidden_proposal) }
 

spec/system/admin/activity_spec.rb

@@ -219,7 +219,7 @@ describe "Admin activity" do
       within("#proposal_#{proposal.id}") do
         accept_confirm("Are you sure? Hide author \"#{proposal.author.name}\"") { click_link "Hide author" }
 
-        expect(page).to have_current_path(debates_path)
+        expect(page).to have_current_path(proposals_path)
       end
 
       visit admin_activity_path

spec/system/admin/hidden_comments_spec.rb

@@ -16,7 +16,7 @@ describe "Admin hidden comments", :admin do
       accept_confirm("Are you sure? Hide author \"#{proposal.author.name}\"") { click_link "Hide author" }
     end
 
-    expect(page).to have_current_path debates_path
+    expect(page).to have_current_path proposals_path
 
     visit admin_hidden_comments_path
 

spec/system/moderation/budget_investments_spec.rb

@@ -25,10 +25,7 @@ describe "Moderate budget investments" do
 
     accept_confirm("Are you sure? Hide author \"#{investment.author.name}\"") { click_link "Hide author" }
 
-    expect(page).to have_current_path(debates_path)
-
-    visit budget_investments_path(budget.id, heading_id: heading.id)
-
+    expect(page).to have_current_path(budget_investments_path(budget))
     expect(page).not_to have_content(investment.title)
   end