app/controllers/account/likes_controller.rb
class Account::LikesController < ApplicationController
cache_sweeper :user_sweeper
prepend_before_filter :authenticate!
respond_to :json
def create
@post = Post.find params[:post_id]
current_user.like(@post)
render_replaceable
end
def destroy
@post = Post.find params[:post_id]
current_user.unlike(@post)
render_replaceable
end
private
def render_replaceable
link = render_to_string(inline: "<%= current_user.like?(@post.reload) ? link_to_unlike(@post) : link_to_like(@post) %>")
render json: { replaceable: link }
end
end