Unassign guiders from groups

app/controllers/groups_controller.rb

@@ -10,15 +10,24 @@ def index
 
   def create
     CreateGroupAssignments.new(user_ids, group_params).call
+    go_back_with_success(:assigned)
+  end
+
+  def destroy
+    DestroyGroupAssignments.new(user_ids, params[:id]).call
+
+    go_back_with_success(:removed)
+  end
 
+  private
+
+  def go_back_with_success(action)
     redirect_back(
       fallback_location: users_path,
-      success: 'The users were assigned to the specified groups'
+      success: "The users were #{action} from the specified groups"
     )
   end
 
-  private
-
   def group_params
     params.require(:group).permit(:name)
   end

app/forms/destroy_group_assignments.rb

@@ -0,0 +1,17 @@
+class DestroyGroupAssignments
+  def initialize(user_ids, group_id)
+    @user_ids = user_ids
+    @group_id = group_id
+  end
+
+  def call
+    GroupAssignment
+      .where(user_id: user_ids, group_id: group_id)
+      .delete_all
+  end
+
+  private
+
+  attr_reader :user_ids
+  attr_reader :group_id
+end

app/views/groups/index.html.erb

@@ -34,7 +34,7 @@
             <div class="col-lg-12">
               <%= form_for Group.new, url: groups_path(user_ids: params[:user_ids]), class: 'js-form' do |f| %>
                 <div class="input-group">
-                  <%= f.text_field :name, class: 'form-control js-group-input t-group', placeholder: 'Add a new group' %>
+                  <%= f.text_field :name, class: 'form-control js-group-input t-name', placeholder: 'Add a new group' %>
                   <span class="input-group-btn">
                     <%= f.button class: 'btn btn-primary js-button t-add-group' do %>
                       <span class="glyphicon glyphicon-plus"></span>
@@ -48,14 +48,17 @@
         </td>
       </tr>
       <% @groups.each do |group| %>
-        <tr>
+        <tr class="t-group">
           <td class="lead">
             <span class="label label-info"><%= group.name %></span>
           </td>
           <td class="lead">
-            <a href="#" class="js-remove pull-right">
+            <%= link_to group_path(group, user_ids: params[:user_ids]),
+              class: 'js-remove pull-right t-remove',
+              method: :delete,
+              data: { confirm: "Are you sure you want to remove the group #{group.name} from these guiders?" } do %>
               <span class="glyphicon glyphicon-remove"></span>
-            </a>
+            <% end %>
           </td>
         </tr>
       <% end %>

config/routes.rb

@@ -7,5 +7,5 @@
     resources :schedules
   end
 
-  resources :groups, only: %i(index create)
+  resources :groups, only: %i(index create destroy)
 end

spec/features/resource_manager_manages_guiders_spec.rb

@@ -23,6 +23,30 @@
     end
   end
 
+  scenario 'Unassigning a group from multiple guiders', js: true do
+    given_the_user_is_a_resource_manager do
+      and_there_are_guiders_assigned_to_groups
+      when_they_visit_the_guiders_page
+      and_they_choose_to_remove_groups_from_multiple_guiders
+      then_they_see_the_guiders_they_will_affect
+      when_they_remove_a_group
+      then_the_group_is_unassigned_from_those_guiders
+    end
+  end
+
+  def and_they_choose_to_remove_groups_from_multiple_guiders
+    and_they_choose_to_add_groups_to_multiple_guiders
+  end
+
+  def when_they_remove_a_group
+    @page.groups.first.remove.click
+  end
+
+  def then_the_group_is_unassigned_from_those_guiders
+    expect(@page).to have_flash_of_success
+    expect(@page).to have_no_text(@team_one.name)
+  end
+
   def and_they_choose_to_add_groups_to_multiple_guiders
     @page.guiders.map(&:checkbox).each { |c| c.set(true) }
     @page.wait_for_action_panel

spec/forms/destroy_group_assignments_spec.rb

@@ -0,0 +1,19 @@
+require 'rails_helper'
+
+RSpec.describe DestroyGroupAssignments, '#call' do
+  let(:group) { create(:group) }
+  let(:users) { create_list(:guider, 2) }
+  let(:user_ids) { users.map(&:id) }
+
+  before do
+    users.each { |u| u.groups << group }
+  end
+
+  subject { described_class.new(user_ids, group.id) }
+
+  context 'for the given users' do
+    it 'unassigns the given group' do
+      expect { subject.call }.to change { GroupAssignment.count }.by(-2)
+    end
+  end
+end

spec/support/pages/manage_groups.rb

@@ -3,8 +3,12 @@ class ManageGroups < SitePrism::Page
     set_url '/groups'
 
     element :affected, '.t-affected'
-    element :group, '.t-group'
+    element :group, '.t-name'
     element :add_group, '.t-add-group'
     element :flash_of_success, '.alert-success'
+
+    sections :groups, '.t-group' do
+      element :remove, '.t-remove'
+    end
   end
 end