[英]Angular 2 search filter works for one property but not for all properties of an array
在Angular 1中,這里提到了 filter屬性和ng-repeat
。
但是在Angular 2中,有一個名為“ pipe”的新功能。 我已經使用過管道,但是仍然無法像Angular 1版本那樣搜索所有屬性。
但是,它對於任何1個屬性都可以正常工作,但對於整個數組,則不能正常工作。
搜索某些內容時出現以下錯誤。
錯誤TypeError:無法讀取Array.some(本地)的http:// localhost:8100 / build / main.js:118751:76的null的屬性'includes'(位於http:// localhost:8100 / build / main.js) :118751:42在Array.filter(本機)在FilterPipe.transform( http:// localhost:8100 / build / main.js:118750:26 )在checkAndUpdatePureExpressionInline( http:// localhost:8100 / build / main.js :11519:38 )在checkAndUpdateNodeInline( http:// localhost:8100 / build / main.js:12374:17 )在checkAndUpdateNode( http:// localhost:8100 / build / main.js:12336:16 )在debugCheckAndUpdateNode(位於Object.eval的debugCheckDirectivesFn( http:// localhost:8100 / build / main.js:12906:13 )的http:// localhost:8100 / build / main.js:12965: 59 )(作為updateDirectives)(ng: ///位於App.ulebugUpdateDirectives的AppModule / Orders.ngfactory.js:628: 46 [作為updateDirectives]( http:// localhost:8100 / build / main.js:12891:21 )在checkAndUpdateView( http:// localhost :8100 / build / main.js:12303:14 )在execCompone上的callViewAction( http:// localhost:8100 / build / main.js:12618:17 ) ntViewsAction( http:// localhost:8100 / build / main.js:12564:13 )
錯誤上下文DebugContext_ {視圖:對象,nodeIndex:43,nodeDef:對象,elDef:對象,elView:對象} component:(...)componentRenderElement:(...)context:(...)elDef:ObjectbindingFlags:2bindingIndex :6綁定:Array(1)childCount:1childFlags:73728childMatchedQueries:0directChildFlags:73728element:Objectflags:1index:42matchedQueries:ObjectmatchedQueryIds:0ngContent:nullngContentIndex:0outputIndex:3outputs:Array(0)parent:Objectprovider:nullquery:nullent :ObjectelOrCompView:(...)elView:Objectinjector:(...)nodeDef:ObjectnodeIndex:43providerTokens:(...)引用:(...)renderNode:(...)view:Object__proto__:Object
下面是我的代碼供參考:
1)FilterPipe.ts
import { Pipe, PipeTransform, Injectable } from '@angular/core';
@Pipe({
name: 'filter'
})
@Injectable()
export class FilterPipe implements PipeTransform {
transform(items: any, term: any): any {
if (term) {
// THIS IS WORKING BUT FOR ONLY order_id PROPERTY
// return items.filter(function (item) {
// return item.order_id.toLowerCase().includes(term.toLowerCase());
// });
// THIS IS NOT WORKING
return items.filter(item => {
return Object.keys(item).some(k => item[k].includes(term.toLowerCase()));
});
}
return items;
}
}
2)Orders.html
<ion-header style="direction: ltr;">
<ion-navbar>
<ion-buttons left>
<button ion-button icon-only (click)="logout()">
<ion-icon name="log-out"></ion-icon>
</button>
</ion-buttons>
<ion-title>הזמנה</ion-title>
<ion-buttons start>
<button ion-button icon-only (click)="getOrders()">
<ion-icon name="refresh"></ion-icon>
</button>
</ion-buttons>
<ion-buttons end>
<button ion-button icon-only (click)="showFilterBar()">
<ion-icon name="search"></ion-icon>
</button>
</ion-buttons>
</ion-navbar>
</ion-header>
<ion-content>
<ul class="list" *ngFor="let order of orders | filter : Search.value">
<li class="item {{order.color}}" (click)="gotoorderdetails(order)">
<div style="float:left;">
{{order.start_date}}<br/>
</div>
<b>{{order.order_id}} </b> צ - {{order.total_staff}} ימ- {{order.number_of_days}}<br/><br/> {{order.full_name}}
<br/>
<div style="float:left;">
{{order.managers}}<br/>
</div>
<span *ngIf="order.event_location"> {{order.event_location}}<br/></span>
</li>
</ul>
</ion-content>
<ion-footer>
<ion-searchbar #Search (keyup)="0"></ion-searchbar>
</ion-footer>
如何在離子2中使用離子濾棒 。
感謝JB Nizet的回答。
以下是我的工作更新代碼。
import { Pipe, PipeTransform, Injectable } from '@angular/core';
@Pipe({
name: 'filter'
})
@Injectable()
export class FilterPipe implements PipeTransform {
transform(items: any, term: any): any {
if (term) {
return items.filter(item => {
return Object.keys(item).some(
k => {
if (item[k] != null && item[k] != undefined && typeof item[k] == 'string')
return item[k].includes(term.toLowerCase());
}
);
});
}
return items;
}
}
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