CODEWITHSUNDEEP
ruby-on-railsruby
vinduong tang
vinduong tang

Reputation: 13

How to display User liked "Term"?

I want to show to all users who like "Term", how do I do it?

And this is what I did.

likes_controller.rb

 def index
    @likes = Like.all
 end

index.html.erb (like)

<table class="table">
  <thead class="thead-dark">
    <tr>
      <th scope="col">STT</th>
      <th scope="col">UserName</th>
    </tr>
  </thead>
  <tbody>
    <% @likes.each do |like| %>
    <tr>
      <th scope="row"><%= @like.id %></th>
      <td></strong><%= @like.user.username %></strong>></td>
      <tr>
      <% end %>
  </tbody>
</table>

like.rb

id, term_id, user_id

routes 

resources :terms do
    resources :likes
end

term

belong_to :user
has_many :likes

user :

has_many :likes
has_many :terms

like :

belong_to :user
belong_to :term

I'm not sure if I have provided enough documents, if not, please leave me a comment

Upvotes: 0

Views: 51

Answers (2)

SRack
SRack

Reputation: 12203

It's hard to be precise with this without you updating the question to show the relationships setup in the three models, but you could do something like:

#term.rb
has_many :users, through: :likes

That'll give you access to term.users directly, returning all those that have liked the term.

You could then load the term in your controller (be sure to eager load the users):

def index
  @term = Term.find(params[:id]).includes(:users)
end

And then in the view:

<% @term.users.each do |user| %>
  <tr>
    <td scope="row"><%= user.like_id %></td>
    <td><strong><%= user.username %></strong>></td>
  <tr>
<% end %>

Please note I've switched to use two td tags in the loop - the th tag should be used for the header row.

Hope that helps - let me know how you get on or if you have any questions :)

Upvotes: 2

Mark
Mark

Reputation: 6455

Try:

# likes_controller.rb

def index
  @term = Term.find(params[:id]
  @likes = @term.likes
end


## likes/index.html.erb

<% @likes.each do |like| %>
  <tr>
    <th scope="row"><%= @like.id %></th>
    <td></strong><%= @like.user.username %></strong>></td>
  </tr>
<% end %>

Upvotes: 0

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