The API for GridOptions in Angular4's ag-Grid is not defined

Currently, I am utilizing the complimentary Version of ag-Grid within my Angular 4 Application.

In this code snippet below, my intention is to automatically resize the grid within the constructor:

constructor(private modalService: NgbModal) {
    this.gridOptions = <GridOptions>{};

    const columnDefs = [...];
    const rowData = [...];

    this.gridOptions.columnDefs = columnDefs;
    this.gridOptions.rowData = rowData;

    this.gridOptions.api.sizeColumnsToFit();
}

However, when inspecting the Developer Tools, an error message appears as follows:

ERROR TypeError: Cannot read property 'sizeColumnsToFit' of undefined

angulartypescriptag-gridag-grid-ng2

Answer №1

Attach the api functions to the Api object when the onGridReady event is triggered, which must be defined in the Constructor...

 constructor() {
    this.gridOptions = <GridOptions>{
      onGridReady: () => {
        this.gridOptions.api.addEventListener('rowClicked', this.myRowClickedHandler);
      }
    };

myRowClickedHandler(event) {
     this.createdDate = event.data.createdDate;
}

Answer №2

Accessing the gridOptions.api is dependent on initializing a new agGrid.Grid instance first. Here's an example:

this.gridOptions = <GridOptions>{};
//initially just an empty object

const columnDefs = [...];
const rowData = [...];

this.gridOptions.columnDefs = columnDefs;
this.gridOptions.rowData = rowData;
// at this point, gridOptions only contains columnDefs and rowData attributes

this.gridOptions.api.sizeColumnsToFit();

//wherever you instantiate the grid...
new agGrid.Grid(gridDiv, gridOptions)
//now, the previously created gridOptions object is completed
//     with all necessary api and columnApi attributes and functions

Answer №3

Occasionally, substituting this.gridOptions.columnDef = [] in place of this.gridOptions.api.setColumnDef can resolve the problem.

Answer №4

Implementing grid options and grid ready binding in HTML:

  [gridOptions]="gridOptions"
  (gridReady)="onGridReady($event)"

Create an empty grid options variable within your component:

gridOptions: GridOptions = {}

Utilize the grid options within the grid ready function:

onGridReady(params) {
  this.gridOptions.isExternalFilterPresent  =  this.isExternalFilterPresent.bind(this)
  this.gridOptions.doesExternalFilterPass = this.doesExternalFilterPass.bind(this)   
}

Answer №5

Connect your gridOptions.api to the event.api within the onGridReady function:

// gridOptions defined as a component property

gridOptions = {
    onGridReady(event: GridReadyEvent) {
        this.api = event.api
    }
}

Once the grid is ready, you can access the api using this.gridOptions.api. Remember not to use an arrow function (lambda), so that this points to gridOptions and not the component.

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