shell terminal
$ rails generate integration_test following
test/fixtures/relationships.yml
one:
follower: michael
followed: lana
two:
follower: michael
followed: malory
three:
follower: lana
followed: michael
four:
follower: archer
followed: michael
test/integration/following_test.rb
require 'test_helper'
class FollowingTest < ActionDispatch::IntegrationTest
def setup
@user = users(:michael)
log_in_as(@user)
end
test "following page" do
get following_user_path(@user)
assert_not @user.following.empty?
assert_match @user.following.count.to_s, response.body
@user.following.each do |user|
assert_select "a[href=?]", user_path(user)
end
end
test "followers page" do
get followers_user_path(@user)
assert_not @user.followers.empty?
assert_match @user.followers.count.to_s, response.body
@user.followers.each do |user|
assert_select "a[href=?]", user_path(user)
end
end
end
shell terminal
$ rails generate controller Relationships
test/controllers/relationships_controller_test.rb
require 'test_helper'
class RelationshipsControllerTest < ActionDispatch::IntegrationTest
test "create should require logged-in user" do
assert_no_difference 'Relationship.count' do
post relationships_path
end
assert_redirected_to login_url
end
test "destroy should require logged-in user" do
assert_no_difference 'Relationship.count' do
delete relationship_path(relationships(:one))
end
assert_redirected_to login_url
end
end
app/controllers/relationships_controller.rb
class RelationshipsController < ApplicationController
before_action :logged_in_user
def create
user = User.find(params[:followed_id])
current_user.follow(user)
redirect_to user
end
def destroy
user = Relationship.find(params[:id]).followed
current_user.unfollow(user)
redirect_to user
end
end
app/views/users/_follow.html.erb
<%= form_for(current_user.active_relationships.build, remote: true) do |f| %>
<div><%= hidden_field_tag :followed_id, @user.id %></div>
<%= f.submit "Follow", class: "btn btn-primary" %>
<% end %>
app/views/users/_unfollow.html.erb
<%= form_for(current_user.active_relationships.find_by(followed_id: @user.id),
html: { method: :delete },
remote: true) do |f| %>
<%= f.submit "Unfollow", class: "btn" %>
<% end %>
app/controllers/relationships_controller.rb
class RelationshipsController < ApplicationController
before_action :logged_in_user
def create
user = User.find(params[:followed_id])
current_user.follow(user)
respond_to do |format|
format.html { redirect_to @user }
format.js
end
end
def destroy
user = Relationship.find(params[:id]).followed
current_user.unfollow(user)
respond_to do |format|
format.html { redirect_to @user }
format.js
end
end
end
config/application.rb
require_relative 'boot'
require 'rails/all'
require File.expand_path('../boot', __FILE__)
# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)
module SampleApp
class Application < Rails::Application
# Settings in config/environments/* take precedence over those specified here.
# Application configuration should go into files in config/initializers
# -- all .rb files in that directory are automatically loaded.
# Include the authenticity token in remote forms.
config.action_view.embed_authenticity_token_in_remote_forms = true
end
end
test/integration/following_test.rb
require 'test_helper'
class FollowingTest < ActionDispatch::IntegrationTest
def setup
@user = users(:michael)
@other = users(:archer)
log_in_as(@user)
end
test "following page" do
get following_user_path(@user)
assert_not @user.following.empty?
assert_match @user.following.count.to_s, response.body
@user.following.each do |user|
assert_select "a[href=?]", user_path(user)
end
end
test "followers page" do
get followers_user_path(@user)
assert_not @user.followers.empty?
assert_match @user.followers.count.to_s, response.body
@user.followers.each do |user|
assert_select "a[href=?]", user_path(user)
end
end
test "should follow a user the standard way" do
assert_difference '@user.following.count', 1 do
post relationships_path, params: { followed_id: @other.id }
end
end
# test "should follow a user with Ajax" do
# assert_difference '@user.following.count', 1 do
# post relationships_path, xhr: true, params: { followed_id: @other.id }
# end
# end
test "should unfollow a user the standard way" do
@user.follow(@other)
relationship = @user.active_relationships.find_by(followed_id: @other.id)
assert_difference '@user.following.count', -1 do
delete relationship_path(relationship)
end
end
# test "should unfollow a user with Ajax" do
# @user.follow(@other)
# relationship = @user.active_relationships.find_by(followed_id: @other.id)
# assert_difference '@user.following.count', -1 do
# delete relationship_path(relationship), xhr: true
# end
# end
end
test/models/user_test.rb
test "feed should have the right posts" do
michael = users(:michael)
archer = users(:archer)
lana = users(:lana)
# Posts from followed user
lana.microposts.each do |post_following|
assert michael.feed.include?(post_following)
end
# Posts from self
michael.microposts.each do |post_self|
assert michael.feed.include?(post_self)
end
# Posts from unfollowed user
archer.microposts.each do |post_unfollowed|
assert_not michael.feed.include?(post_unfollowed)
end
end
app/models/user.rb
# Returns a user's status feed.
def feed
Micropost.where("user_id IN (?) OR user_id = ?", following_ids, id)
end
# Follows a user.
def follow(other_user)
active_relationships.create(followed_id: other_user.id)
end
app/models/user.rb
# Returns a user's status feed.
def feed
Micropost.where("user_id IN (:following_ids) OR user_id = :user_id",
following_ids: following_ids, user_id: id)
end
app/models/user.rb
# Returns a user's status feed.
def feed
following_ids = "SELECT followed_id FROM relationships
WHERE follower_id = :user_id"
Micropost.where("user_id IN (#{following_ids})
OR user_id = :user_id", user_id: id)
end
shell terminal
$ rails test
$ git add -A
$ git commit -m "Add user following"
$ git checkout master
$ git merge following-users
$ git push
Github URL for sample_app project: https://github.com/jimmy2046/sample_app
- I completed all 14 chapters on July 22, 2017.
