Angular RouterLink queryParamsHandling可选参数 [英] Angular RouterLink queryParamsHandling for optional params

问题描述

是否有一种干净的方法来将当前可选的queryParams与模板中链接上的其他可选的queryParam合并?

Is there a clean way to merge the current optional queryParams with an additional optional queryParam on a link in the template?

当前网址:/search;brand=Trek

所需的goto链接:/search;brand=Trek;start=1(startCount将增加)

Desired goto link: /search;brand=Trek;start=1 (startCount will be incremented)

我知道Angular支持合并 normal queryParams(

I know Angular supports the ability to merge normal queryParams (https://angular.io/docs/ts/latest/api/router/index/RouterLink-directive.html), but I don't think it works with optional queryParams.

这就是为什么它不起作用的原因:

That's why this doesn't work:

<a class="nav-btn"
   queryParamsHandling="merge"
   [routerLink]="[ { start: startCount+1 } ]">
    Next Page
</a>

有什么建议吗?

推荐答案

尝试

<a class="nav-btn"
   queryParamsHandling="preserve" <--- instead of 'merge'
   [routerLink]="[ { start: startCount+1 } ]">
    Next Page
</a>

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