codecore

day.28

#TDD
  association :user,  Factorygirl: :user

bin/rails g migration add_user_references_to_campaigns user:references

RAILS_ENV=test

let(:pledge) {FactoryGirl.create(:pledge, {campaign: campaign, user: user})}

call pledge

pledge

redirect_to campaign


for raising an error message in rspec

expect do
  delete :destroy, id: pledge_1.id, campaign_id: pledge_1.campaign_id  
end.to raise_error


pledge =  current_user.pledges.find_params[:id]

-question.rb
has_many :users, through: :likes

-user.rb
has_many :liked_questions, through: :likes, source: :questions

like.create(question: q, user: u)

user.liked_question << question

qustion.user << user


u =  user.find(3)

user.liked_questions 
user.liked_questions_ids

user.liked_questions_ids = [101, 102]

--------------------------------------------

bin/rails g controller likes

-routes.rb
resoures :likes, only: [:create, :destroy]

-app likes controller
before_action :authenticate_user

def create
  q = Question.find params[:question_id]
  current_user.liked_questions << q
  redirect_to q
end

def destroy
end

- questions show
<hr>
<%= link_to "Link", question_likes_path(@qustion),  method: :post %>

<hr>


- like.model
this ensures that user_id /question_id combination is unique
validates :user_id, uniqueness: {scope: :question_id}

-likes controller 

def create
q = Question.find params[:question_id]
like = Like.new(questino: q, user: current_user)
  if like.save
    redirect_to q, notice: "Question liked"
  else
    redirect_to q, alert: "Not liked!"
  end
end

-show.html
<% like [email protected]_by_user_id current_user %>
<%= link_to "unlike", question_like_path(@question, like), method: :delete %>

-like controller
def destroy
  like = like.find params[:id]
  q = Question.find params[:question_id]
  like.destroy
  redirect_to question_path(q), notice: "Un-liked"
end

-show.html
<% if like %>
-----------------------------------------------------------------------------------------
## refactoring

-question.rb

def like_for(user)
 likes.find_by_user_id user
end

-show.html
<%= @question.likes.count %>

-------------------------------------------------------------------------------------

font awesome rails