Scaffold activities inside group

app/controllers/activities_controller.rb

+class ActivitiesController < ApplicationController
+  include GroupsHelper
+  before_action :set_activity, only: [:show, :edit, :update, :destroy]
+  before_action :set_group
+  before_action :require_membership!
+
+  # GET /groups/:id/activities
+  # GET /activities.json
+  def index
+    @activities = @group.activities
+  end
+
+  # GET /activities/1
+  # GET /activities/1.json
+  def show
+  end
+
+  # GET /activities/new
+  def new
+    @activity = Activity.new
+  end
+
+  # GET /activities/1/edit
+  def edit
+  end
+
+  # POST /activities
+  # POST /activities.json
+  def create
+    @activity = Activity.new(activity_params)
+
+    respond_to do |format|
+      if @activity.save
+        format.html { redirect_to @activity, notice: 'Activity was successfully created.' }
+        format.json { render :show, status: :created, location: @activity }
+      else
+        format.html { render :new }
+        format.json { render json: @activity.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /activities/1
+  # PATCH/PUT /activities/1.json
+  def update
+    respond_to do |format|
+      if @activity.update(activity_params)
+        format.html { redirect_to @activity, notice: 'Activity was successfully updated.' }
+        format.json { render :show, status: :ok, location: @activity }
+      else
+        format.html { render :edit }
+        format.json { render json: @activity.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /activities/1
+  # DELETE /activities/1.json
+  def destroy
+    @activity.destroy
+    respond_to do |format|
+      format.html { redirect_to activities_url, notice: 'Activity was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_activity
+      @activity = Activity.find(params[:id])
+    end
+
+    def set_group
+      @group = Group.find(params[:group_id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def activity_params
+      params.fetch(:activity, {})
+    end
+end

app/controllers/members_controller.rb

   # GET /members
   # GET /members.json
   def index
-    @members = Member.all
+    @members = @group.members
   end
 
   # GET /members/1

app/helpers/activities_helper.rb

+module ActivitiesHelper
+end

app/views/activities/_activity.json.jbuilder

+json.extract! activity, :id, :created_at, :updated_at
+json.url activity_url(activity, format: :json)

app/views/activities/_form.html.erb

+<%= form_for([@group, activity]) do |f| %>
+  <% if activity.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(activity.errors.count, "error") %> prohibited this activity from being saved:</h2>
+
+      <ul>
+      <% activity.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="actions">
+    <%= f.submit %>
+  </div>
+<% end %>

app/views/activities/edit.html.erb

+<h1>Editing Activity</h1>
+
+<%= render 'form', activity: @activity %>
+
+<%= link_to 'Show', group_activity(@group, @activity) %> |
+<%= link_to 'Back', group_activities_path(@group) %>

app/views/activities/index.html.erb

+<p id="notice"><%= notice %></p>
+
+<h1>Activities</h1>
+
+<table class="table">
+  <thead>
+    <tr>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @activities.each do |activity| %>
+      <tr>
+        <td><%= link_to 'Show', group_activity_path(@group, activity) %></td>
+        <td><%= link_to 'Edit', edit_group_activity_path(@group, activity) %></td>
+        <td><%= link_to 'Destroy', group_activity_path(@group, activity), method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Activity', new_group_activity_path(@group) %>

app/views/activities/index.json.jbuilder

+json.array! @activities, partial: 'activities/activity', as: :activity

app/views/activities/new.html.erb

+<h1>New Activity</h1>
+
+<%= render 'form', activity: @activity %>
+
+<%= link_to 'Back', group_activities_path(@group) %>

app/views/activities/show.html.erb

+<p id="notice"><%= notice %></p>
+
+<%= link_to 'Edit', edit_group_activity_path(@group, @activity) %> |
+<%= link_to 'Back', group_activities_path(@group) %>

app/views/activities/show.json.jbuilder

+json.partial! "activities/activity", activity: @activity

config/routes.rb

 
   resources :groups do
     resources :members
+    resources :activities
   end
   get 'my_groups', to: 'groups#user_groups', as: :user_groups
 

test/controllers/activities_controller_test.rb

+require 'test_helper'
+
+class ActivitiesControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @activity = activities(:one)
+  end
+
+  test "should get index" do
+    get activities_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get new_activity_url
+    assert_response :success
+  end
+
+  test "should create activity" do
+    assert_difference('Activity.count') do
+      post activities_url, params: { activity: {  } }
+    end
+
+    assert_redirected_to activity_url(Activity.last)
+  end
+
+  test "should show activity" do
+    get activity_url(@activity)
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get edit_activity_url(@activity)
+    assert_response :success
+  end
+
+  test "should update activity" do
+    patch activity_url(@activity), params: { activity: {  } }
+    assert_redirected_to activity_url(@activity)
+  end
+
+  test "should destroy activity" do
+    assert_difference('Activity.count', -1) do
+      delete activity_url(@activity)
+    end
+
+    assert_redirected_to activities_url
+  end
+end