Question

I need to pass two instance variables to a javascript file that is being used by an ajax request to update a user display. This is what I need to do:

respond_to do |format|
    if @post.save
        format.js { @post @user_vote }  # <-- right here
    else 
        format.html { redirect_to :back, :alert => 'There was an error in removing the vote' }
    end
end 

How is this done?

Answer 1

There is no need to pass the instance variables if you use js.erb files. You can directly put the rails tag and access those variables inside the js.erb file

Eg:

In your controller just put

format.js #instead of format.js { @post @user_vote }

and in js.erb file you can access the instance variable as

$('#ele').html("<%= @post.name %>");