chore(*): Check explicitly for null/undefined in case rowId is 0.

MKirova · MKirova · commit b676f01bca6f · 2020-10-19T11:45:24.000+03:00
diff --git a/projects/igniteui-angular/src/lib/grids/tree-grid/tree-grid.component.ts b/projects/igniteui-angular/src/lib/grids/tree-grid/tree-grid.component.ts
@@ -526,7 +526,7 @@ export class IgxTreeGridComponent extends IgxGridBaseDirective implements GridTy
     protected _getParentRecordId() {
         if (this.addRowParent.asChild) {
             return super._getParentRecordId();
-        } else if (this.addRowParent.rowID) {
+        } else if (this.addRowParent.rowID !== null && this.addRowParent.rowID !== undefined) {
             const spawnedForRecord =  this._gridAPI.get_rec_by_id(this.addRowParent.rowID);
             return spawnedForRecord?.parent?.rowID;
         }

Original file line number	Diff line number	Diff line change
`@@ -526,7 +526,7 @@ export class IgxTreeGridComponent extends IgxGridBaseDirective implements GridTy`
`526`	`526`	`protected _getParentRecordId() {`
`527`	`527`	`if (this.addRowParent.asChild) {`
`528`	`528`	`return super._getParentRecordId();`
`529`		`- } else if (this.addRowParent.rowID) {`
	`529`	`+ } else if (this.addRowParent.rowID !== null && this.addRowParent.rowID !== undefined) {`
`530`	`530`	`const spawnedForRecord = this._gridAPI.get_rec_by_id(this.addRowParent.rowID);`
`531`	`531`	`return spawnedForRecord?.parent?.rowID;`
`532`	`532`	`}`