how can I generate json from respond_to method in rails?

Question

If I have a block of code like this:

def show
  @post = Post.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml         


        

Answer 1

It's just like the other formats except that you use render :json instead.

respond_to do |format|
  format.html # show.html.erb
  format.xml  { render :xml => @post }
  format.json { render :json => @post }
end