Summing columns or do custom calculations

[axwack]

I would like to create aggregate calculations like in the example picture.

 1) Is this possible with an aggregate field or;

2) Should I use the Change event and manipulate the model directly?

 

Here is the code for the datasource:

var dataSource = new kendo.data.TreeListDataSource({
           transport: {
               read: {
                   url: "../getModelTargetWeights?SSM_id=" + id,
                   dataType: "json"
               }
           },
           schema: {
               parse: function (response) {
                   NodeArray = [];
                   if (response.length == undefined) {

                       var node = {
                           id: response.id,
                           currWeight: response.currWeight,
                           tgtWeight: response.tgtWeight,
                           hasChildren: response.hasChildnode,
                           parentId: response.parent,
                           ext_model_id: response.ext_model_id,
                           securitySelectionModelName: response.SSM.securitySelectionModelName,
                           classificationNameNode: response.classificationNameNode,

                       };
                       NodeArray.push(node);
                   } else {
                       for (var i = 0; i < response.length; i++) {
                           var node = {
                               id: response[i].id,
                               currWeight: response[i].currWeight,
                               tgtWeight: response[i].tgtWeight,
                               hasChildren: response[i].hasChildnode,
                               parentId: response[i].parent.id,
                               ext_model_id: response[i].ext_model_id,
                               securitySelectionModelName: response[i].SSM.securitySelectionModelName,
                               classificationNameNode: response[i].classificationNameNode.classificationName
                           }
                           NodeArray.push(node);
                       }
                   }

                   return NodeArray;
               },
               model: {
                   id: "id",
                   parentId: "parentId",
                   hasChildren: false,
                   fields: {
                       id: {type: "number", nullable: false},
                       parentId: {field: "parentId", type: "number", defaultValue: null},
                       hasChildren: {type: "boolean", field: "hasChildren"},
                       tgtWeight: {type: 'number', editable: true},
                       currWeight: {type: "number", editable: false},
                       classificationNameNode: {type: "string", editable: false},
                       securitySelectionModelName: {type: "string", editable: false }
                   }
               },
               aggregate: [
                   {field: "currWeight", aggregate: "sum"},
                   {field: "tgtWeight", aggregate: "sum"},
               ]
           }
       });

[Nikolay Rusev]

Hello Vincent,

 

You should use change event of the model. Here is a quick example - http://dojo.telerik.com/@rusev/OquCa

 

Regards,
Nikolay Rusev
Telerik

 

 

[axwack]

Can a validation be done on the number in the cell?

[Nikolay Rusev]

Hello axwack,

 

I'm not sure I understand. You can define validatin rules in the model definition. However this is UI validation and the cell must be in edit mode in order to trigger validation check.

 

Regards,
Nikolay Rusev
Telerik