Ionic framework 来自JSON数组的Ionic 3 navPush

我在我的Ionic应用程序中有一个根页面，我是从JSON文件构建的。我需要在数组中放置一个页面对象，让navPush选择器获取该值，但它不起作用。如果我将一个页面硬编码到navPush中，它会工作，但从JSON中提取时不会工作

列表页面

...
<ion-row class="grid-categories">
  <ion-col width-50 class="category-item" *ngFor="let category of listing.categories">
    <background-image class="category-heading" [src]="category.image" [navPush]="category.page">
      <ion-row class="heading-row">
        <ion-col no-padding width-100>
          <h2 class="category-title">{{category.title}}</h2>
        </ion-col>
      </ion-row>
    </background-image>
  </ion-col>
</ion-row>
...

---

它不应该是

“页面”：“AboutPage”

？（类名大写A）

...
"categories": [
    {
        "title": "About MSNVM",
        "image": "./assets/images/listing/200x200basquet.png",
        "page": "aboutPage"
    },
    {
        "title": "Plaque Locator",
        "image": "./assets/images/listing/200x200boxeo.png",
        "page": "aboutPage"
    },
    {
        "title": "Make A Donation",
        "image": "./assets/images/listing/200x200crossfit.png",
        "page": "aboutPage"
    },
    {
        "title": "Visit Memorial",
        "image": "./assets/images/listing/200x200futbol.png",
        "page": "aboutPage"
    }

]
...