jquery doesn't call success method on $.ajax for rails standard REST DELETE answer -

may such problem not new, didn't find similar. have such jquery code:

$.ajax({    url : ('/people/'+id),    type : 'delete',    datatype : 'json',    success : function(e) {     table.getitems(currentpage);   } }); 

my rails controller looks this:

def destroy     @person = person.find(params[:id])     @person.destroy      respond_to |format|       format.html { redirect_to(people_url) }       format.json  { render :json => @person, :status => :ok }     end end 

this working.

but when use following (as generated standard), success callback doesn't called:

def destroy     @person = person.find(params[:id])     @person.destroy      respond_to |format|       format.html { redirect_to(people_url) }       format.json  { head :ok }     end end 

tested under rails 3.0.3, jquery 1.4.2 , firefox 3.6.13.
firebug says, query fired , returns 200 ok in both cases, item deleted in both cases too. in second case callback not called.

is there significant difference in rest, , there way utilize jquery using scaffolded controller?

i have run across few times , answer deceptively simple.

you using datatype : 'json' in $.ajax call, jquery expecting json response. head :ok rails returns response containing single space (http://github.com/rails/rails/issues/1742), not accepted jquery valid json.

so if expect either error or bare 200 ok header, set datatype : 'html' in request , should work (if don't set datatype, jquery try guess @ type based on response headers, etc., , still guess json, in case you'd still have problem). if expect json back, instead of using head :ok render valid json (see comments) or use head :no_content suggested @waseem