Cannot read property 'id' of null with jsTree 3.0.8

[Anton Titkov]

Hello, Dear Ivan!

Firstly, many thanks for your plugin!

I am newbie in JS. I am trying to use jsTree with json and ajax.

$("#tree-1").jstree({

                        "themes" : { "theme" : "default", "icons" : true},

                        "plugins" : ["themes"],

                        "core" : {

                        "data" : {

                        "url" : function(node){

                        return "docsets.json?project_id=1";

                        },

                        "data" : function(node){

                        return { 'id' : node.id };

                        }

                        },

                        "check_callback" : true

                        }

              } // i've cut insufficient code

I see a json request in chrome for .....&id=# (actualy in encoded form ....&id=%23) which returns following result:

[{"id":"root_42","parent":"#","text":"Structure","state":{"opened":true},"children":[{"id":"1","parent":"root_42","text":"a new docset","state":{"opened":true}}]}]

but the tree still showing the loading state and i see error in Chrome:

Uncaught TypeError: Cannot read property 'id' of undefined

self.onmessage = function (data, undefined) {
					if(data.data) { data = data.data; }
					var dat = data.dat,
						par = data.par,
						chd = [],
						dpc = [],
						add = [],
						df = data.df,
						t_id = data.t_id,
						t_cnt = data.t_cnt,
						m = data.m,
						p = m[par],
						sel = data.sel,
						tmp, i, j, rslt,
						parse_flat = function (d, p, ps) {
							if(!ps) { ps = []; }
							else { ps = ps.concat(); }
							if(p) { ps.unshift(p); }
	the error occurs here --->>>>>                  var tid = d.id.toString(),
								i, j, c, e,
								tmp = {
									id			: tid,
									text		: d.text || '',
                                                       ..........



I understand that is something wrong with passing 'children' through the code, but i compare the passed json with the examples on the site www.jstree.com and i can't see mistakes.

Please, could you check what's wrong. More thanks!

[Ivan Bozhanov]

Either use the flat format (the one with the parent property), or the nested format (the one with the children property), do not mix them both.

Best regards,
Ivan

[Anton Titkov]

Dear Ivan, 

i see that in nested format 'id' and 'parent' should be omitted.

Thanks for clarifying!

BR

воскресенье, 26 октября 2014 г., 17:36:57 UTC+2 пользователь Ivan Bozhanov написал:

[Ivan Bozhanov]

Hi,

Only parent, ID should be there if you want to set it (although it is not mandatory - jstree will generate IDs if you do not supply them).

Best regards,
Ivan