我有这样一个条纹,它只适用于列:不再为作者命名。
export class FilterBook2 implements PipeTransform {
transform(items: Book[], filter: Book): any {
if (!items || !filter) {
return items;
}
// filter items array, items which match and return true will be kept, false will be filtered out
return items.filter((item) => item.Nazwa.indexOf(filter.Nazwa) || item.Autor.indexOf(filter.Autor) !== -1)
}
}
输入日期:
filterargs = {Nazwa:“”,Autor:“”}
答案 0 :(得分:0)
我认为你试图通过多个参数来过滤书籍。您可以将多个值传递给管道转换函数,如下所示:
<div *ngFor="let book of books | filterBook2 : firstArg : secondArg">
...
</div>
并在管道类
中export class FilterBook2 implements PipeTransform {
transform(items: Book[], firstArg: Book, secondArg: any): any {
// your logic here
}
}