kendo ui - Why does the KendoUI Grid not rollback a delete when the options.error function is called? -


i have put fiddle here demonstrates issue.

http://jsfiddle.net/codeowl/fmzay/1/

just delete record, , should rollback delete calling options.error inside destroy function.

why grid doesn't roll back?

regards,

scott

markup:

<div id="kendogrid"></div>

js:

var _data = [         { users_id: 1, users_fullname: 'bob smith', users_role: 'administrator'  },         { users_id: 2, users_fullname: 'barry baker', users_role: 'viewer'  },         { users_id: 3, users_fullname: 'bill cow', users_role: 'editor'  },         { users_id: 4, users_fullname: 'boris brick', users_role: 'administrator'  }     ],     _datasource = new kendo.data.datasource({          data: _data,         destroy: function (options) {             options.error(new error('error deleting user'));         }     });  $('#kendogrid').kendogrid({     datasource: _datasource,     columns: [         { field: "users_fullname", title: "full name" },         { field: "users_role", title: "role", width: "130px" },         { command: ["edit", "destroy"], title: "&nbsp;", width: "180px" }     ],     toolbar: ['create'],     editable: 'popup' });

signaling error not enough. lets having error on removing record not enough since kendoui doesn't know if record has been removed in server , reply 1 producing error. kendoui approach conservative approach: have decide , explicitly it:

so should add error hander function invokes cancelchanges in grid.

the code be:

_datasource = new kendo.data.datasource({     transport: {         read: function(options) {             options.success(_data);             console.log('read event has been raised');         },         destroy: function (options) {             options.error(new error('error deleting user'));             console.log('destroy event has been raised');         }     },     schema: {         model: {             id: "users_id",             fields: {                 users_id: { editable: false, nullable: true },                 users_fullname: { type: "string", validation: { required: true } },                 users_role: { type: "string", validation: { required: true } }             }         }     },     error: function(a) {         $('#kendogrid').data("kendogrid").cancelchanges();     } });

and updated jsfiddle in here: http://jsfiddle.net/onabai/fmzay/3


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