ruby - How to modify to_json method and add a dynamic property to it - Rails 4 -

so have controller , want add dynamic attribute along other data in @events instance variable

i have search , tried things @events.attributes.merge(appointment: true)

appointment = true want add events object.

def find params = event_params  current_user = 2 @events = event.where('date ?',"%#{params[:month]}%")  def @events.as_json(options = { })     h = super(options)     h[:appointments]   = false # or combine above h[:appointments] = self.appointments?     h end  respond_to |format|   if current_user == 1      if @events        format.json {         render json: @events.to_json       }     else       render 'index'     end   else      format.json {       render json: @events.to_json     }   end end 

end

ajax code here

function retrieve(date_partial) {      var jsondata = {       events: {         month: date_partial,       }     }      $.ajax({       cache: false,       type: "post",       url: "/events/find",       data: jsondata,       success: function(data) {         console.log(data);         (var = 0; < data.length; i++) {           var day = data[i].date.substring(0, 2);           $("td[data-day='" + day + "']").addclass('added');         }        },       error: function(xhr) {         alert("the error code is: " + xhr.statustext);       }     }); 

so how can add property?

this work ? maybe json output isn't expected ?

format.json { render :json => {events: @events, appointments: true} }