CODEWITHSUNDEEP
ruby-on-rails-3partial-viewsconditional-statements
Rufilix
Rufilix

Reputation: 253

condition in partial from other controller

I have a model group -> has_many :questions and a question -> has_many :votes

In my my view show, for the controller groups, I have a partial that can display the list of the questions : <%= render :partial => 'question', :collection => @group.questions.byvote %> Then I have a link to vote with a style like this :

<%= link_to(question_votes_path(question), :controller => :vote, :action => :create, :method => :post, :id => 'vote') do %>
<%= image_tag("voteUp.png")%>
<%= question.votes_count%>
<%end%>

What I would like to do is make a condition, like :

    <% if canvote?%>

… and change the style of the div.

BUT. Making a condition in the group controller can't be made because I need to make my request about the question and not about the group :

Vote.where(:user_id => current_user.id, :question_id => @question.id).first

How can I make it form the other controller group or tell an helper_method in the question controller ?

Upvotes: 0

Views: 49

Answers (1)

dax
dax

Reputation: 10997

I think you should use a model method - you can then call it right in the view and do so unobtrusively. The following method will return true if the user has voted on a given question:

User.rb

def voted?(question)
  #returns true if vote exists
  Vote.exists?(:user_id => current_user.id, :question_id => question.id) 
end

You can use it like this:

_question.html.erb

<% if current_user.voted?(@question) %>
  #code to use if the user has voted on this question
<% else %>
  #code to use if the user has NOT voted on this question
<% end %>

Upvotes: 1

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