问题描述
我有4个组成部分.我正在使用KendoGrid来显示所有四个组件中的数据.但是现在,我不想在所有四个组件中都设置KendoGrid.为此,我制作了一个子组件,在其中设置KendoGrid并从父组件传递数据.我的孩子部分如下:
I have 4 Components. And I am using KendoGrid for displaying the data in all four components. But now, I dont want to use to setup KendoGrid in all four components. For this, I made a child component in which i am setting up the KendoGrid and passing the data from parent component. My child component is given below:
ChildComponent.ts:
@Component({
selector:"my-kendo-grid",
template:`
<kendo-grid [data]="dataVal">
<template ngFor [ngForOf]="myArr" let-column >
<kendo-grid-column field="{{column}}" title="{{column}}" >
<template kendoCellTemplate let-dataItem>
<div>{{dataItem}}</div>
</template>
</kendo-grid-column>
</template>
</kendo-grid>
export class ChildComponent implements OnInit {
@Input() dataVal:any; //taking dataVal value from parent component
myArr=[];
ngOnInit({
this._usersService.getUsers().subscribe((userResponse: any)=> {
for (var key in userResponse[0]) {
this.myArr.push(key);
}
return this.myArr; // binding 'myArr' in Kendogrid template which is making the kendogrid header
});
}
})
}
我的ParentComponent之一如下:
And one of my ParentComponent looks Like:
ParentComponent.html 在此,我将在gridView中传递对象数组.
ParentComponent.html :In This, I am passing the array of objects in gridView.
<my-kendo-grid [dataVal]="gridView"></my-kendo-grid>
现在项目的输出是:
标题正确显示了,但是在取值的地方,我得到了一个对象.
The headers are coming properly, but in the place of values, i am getting an object.
https://i.stack.imgur.com/L1RZt.png
请让我知道我在做什么错
Please let me know what wrong I am doing here.
推荐答案
您将在单元格值中获取[object Object],因为您不打算访问值,因此必须编写如下代码:
You are getting [object Object] in cell value because you are not going to access value, you have to code like:
<div>{{dataItem [column]}}</div>
而且您也不会从主数据源中过滤任何列,因此您不需要列数组.您可以使用所有列加载网格.
And also you are not filtering any column from main datasource, so you don't required column array. You can load grid with all column.
来自父组件的绑定:
<gridView [height]="500" [dataSource]="dataSource"></gridView>
(1)具有所有列:
@Input() height: number = 400;
@Input() dataSource: any = null;
ngOnChanges(changes: any) {
if (changes.dataSource != null && changes.dataSource.currentValue != null) {
this.SetDataSource();
}
}
SetDataSource() {
if (this.dataSource != null) {
}
}
HTML:
<kendo-grid [data]="dataSource"
[scrollable]="'scrollable'"
[height]="height"
[selectable]="true"
[sortable]="{ mode: 'multiple' }">
</kendo-grid>
(1)具有配置的列阵列(根据您的实现):
@Input() height: number = 400;
@Input() dataSource: any = null;
public columns: any = [];
ngOnChanges(changes: any) {
if (changes.dataSource != null && changes.dataSource.currentValue != null) {
this.SetDataSource();
}
}
SetDataSource() {
if (this.dataSource != null) {
this.SetColumns();
}
}
SetColumns(): any {
this.columns = [];
if (this.dataSource != null) {
let row = this.dataSource[0];
this.columns = this.GetColumns(row);
}
}
protected GetColumns(obj: any): any {
let properties: any = [];
if (obj != null && typeof obj == "object") {
for (var property in obj) {
if (obj.hasOwnProperty(property)) {
if (property != '$type') {
let item: any = {};
item.Name = property;
item.DisplayFormat = null;
item.CanSort = true;
item.CanFilter = true;
item.DataType = 'String';
properties.push(item);
}
}
}
}
if (properties != null)
properties.sort();
return properties;
}
public setStyles(): any {
let styles = {
'height': (this.height - 45) + 'px'
};
return styles;
}
HTML:
<kendo-grid [ngStyle]="setStyles()"
[data]="dataSource"
[scrollable]="'scrollable'"
[height]="height"
[selectable]="true"
[sortable]="{ mode: 'multiple' }">
<kendo-grid-column *ngFor="let col of columns;let i=index" field="{{col.Name}}" title="{{col.Name}}"
[sortable]="col.CanSort"
[width]="100">
<ng-template kendoGridCellTemplate let-dataItem let-rowIndex="rowIndex">
<div class="gridCell">
{{dataItem[col.Name]}}
</div>
</ng-template>
</kendo-grid-column>
</kendo-grid>
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