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Data Binding in Vue Gantt component

The Gantt uses DataManager, which supports both RESTful JSON data services binding and local JavaScript object array binding. The dataSource property can be assigned either with the instance of DataManager or JavaScript object array collection. Gantt provides support to bind two kinds of data,

  • Local data
  • Remote data

Local data

To bind local data to Gantt, you can assign a JavaScript object array to the dataSource property. The local data source can also be provided as an instance of the DataManager.

In local data binding, the data source for rendering the Gantt component is retrieved from the same application locally.

The following are the two types of data binding possible with the Gantt component:

  • Hierarchical data binding.
  • Self-referential data binding (Flat data).

Hierarchical data binding

The child property is used to map the child records in hierarchical data.

The following code example shows how to bind the hierarchical local data into the Gantt component.

Source
Preview
app.vue
<template>
     <div>
        <ejs-gantt ref='gantt' :dataSource="data" id="GanttContainer" :taskFields = "taskFields" :height = "height"></ejs-gantt>
    </div>
</template>
<script>
import Vue from "vue";
import { GanttPlugin } from "@syncfusion/ej2-vue-gantt";
Vue.use(GanttPlugin);
export default {
  data: function() {
      return{
            data: [
        {
            TaskID: 1,
            TaskName: 'Project Initiation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            isParent:true,
            subtasks: [
                { TaskID: 2, TaskName: 'Identify Site location', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50,isParent:false },
                { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50, resources: [2, 3, 5],isParent:false   },
                { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4,Predecessor:"2FS", Progress: 50,isParent:false  },
            ]
        },
        {
            TaskID: 5,
            TaskName: 'Project Estimation',
            StartDate: new Date('04/02/2019'),
            EndDate: new Date('04/21/2019'),
            isParent:true,
            subtasks: [
                { TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50, resources: [4],isParent:false  },
                { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50, resources: [4, 8],isParent:false  },
                { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3,Predecessor:"6SS", Progress: 50, resources: [12, 5],isParent:false  }
            ]
        },
    ],
            height: '450px',
            taskFields: {
                id: 'TaskID',
                name: 'TaskName',
                startDate: 'StartDate',
                duration: 'Duration',
                progress: 'Progress',
                dependency: 'Predecessor',
                child: 'subtasks'
            }
        };
  },
};
</script>

Self-referential data binding (Flat data)

The Gantt component can be bound with self-referential data by mapping the data source field values to the id and parentID properties.

  • ID field: This field contains unique values used to identify each individual task and it is mapped to the id property.
  • Parent ID field: This field contains values that indicate parent tasks and it is mapped to the parentID property.
Source
Preview
app.vue
<template>
     <div>
        <ejs-gantt ref='gantt' :dataSource="data" id="GanttContainer" :taskFields = "taskFields" :height = "height" :treeColumnIndex='1'></ejs-gantt>
    </div>
</template>
<script>
import Vue from "vue";
import { GanttPlugin } from "@syncfusion/ej2-vue-gantt";
Vue.use(GanttPlugin);
export default {
  data: function() {
      return{
            data: [
            { TaskID: 1,TaskName: 'Project Initiation',StartDate: new Date('04/02/2019'),EndDate: new Date('04/21/2019')},
            { TaskID: 2, TaskName: 'Identify Site location', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50,ParentId:1 },
            { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50, ParentId:1   },
            { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50,ParentId:1 },
            { TaskID: 5, TaskName: 'Project Estimation',StartDate: new Date('04/02/2019'),EndDate: new Date('04/21/2019')},
            { TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50, ParentId:2  },
            { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50,ParentId:2  },
            { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50, ParentId:2  }
        ],
            height: '450px',
            taskFields: {
                id: 'TaskID',
                name: 'TaskName',
                startDate: 'StartDate',
                duration: 'Duration',
                progress: 'Progress',
                parentID:'ParentId'
            }
        };
  },
};
</script>

Remote data

To bind remote data to the Gantt component, assign service data as an instance of DataManager to the dataSource property.

Source
Preview
app.vue
<template>
     <div>
        <ejs-gantt ref='gantt' :dataSource="data" id="GanttContainer" :taskFields = "taskFields" :height = "height"></ejs-gantt>
    </div>
</template>
<script>
import Vue from "vue";
import { GanttPlugin } from "@syncfusion/ej2-vue-gantt";
import { DataManager, WebApiAdaptor } from '@syncfusion/ej2-data';
Vue.use(GanttPlugin);
export default {
  data: function() {
      return{
            data: new DataManager({
                url: 'https://ej2services.syncfusion.com/production/web-services/api/GanttData',
                adaptor: new WebApiAdaptor,
                crossDomain: true
            }),
            height: '450px',
            taskFields: {
                id: 'TaskId',
                name: 'TaskName',
                startDate: 'StartDate',
                progress: 'Progress',
                duration: 'Duration',
                dependency: 'Predecessor',
                child: 'SubTasks'
            }
        };
  },
};
</script>
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