我是Ionic的新手,我正在尝试显示嵌套列表。我正在使用服务器的JSON响应来获取所有值。这是我的服务器响应。
{
"addonCategories": [
{
"id": 24,
"name": "Cooking type",
"parent_id": 0,
"product_category": 10,
"selection": "single",
"type": "other",
"order": null,
"shows_selection": true,
"selection_type": true,
"direct_pricing": false,
"is_size": false,
"addonItems": [
{
"id": 725,
"name": "Lightly Done",
"product_id": 0,
"addon_category_id": 24,
"price": 0,
"image": "",
"attribute": null,
"main_category_id": 24,
"half_image": null,
"full_image": null,
"order": null,
"large_price": "",
"description": null,
"default_sauce": 0,
"restaurants_id": 0
},
{
"id": 723,
"name": "Regular",
"product_id": 0,
"addon_category_id": 24,
"price": 0,
"image": "",
"attribute": null,
"main_category_id": 24,
"half_image": null,
"full_image": null,
"order": null,
"large_price": "",
"description": null,
"default_sauce": 0,
"restaurants_id": 0
},
{
"id": 724,
"name": "Well Done",
"product_id": 0,
"addon_category_id": 24,
"price": 0,
"image": "",
"attribute": null,
"main_category_id": 24,
"half_image": null,
"full_image": null,
"order": null,
"large_price": "",
"description": null,
"default_sauce": 0,
"restaurants_id": 0
}
]
}
]
}
我正在使用以下HTML代码显示带有复选框选择的嵌套列表。
<ion-list class="setting-content">
<ion-list-header *ngFor="let item of (addonDetail | async)?.addonCategories" no-lines>{{item.name}}
<ion-item-group class="fst-group">
<ion-item *ngFor="let item1 of item.addonItems" no-lines>
<ion-label >{{item1.name}}</ion-label>
<ion-checkbox (click)="clickAddon(item1)" item-right></ion-checkbox>
</ion-item>
</ion-item-group>
</ion-list-header>
</ion-list>
那么如何从内部JSON数组name
获取addonItems
?
当我运行代码时,它会从主数组(addonCategories
)中获取名称,但不会从内部数组(addonItems
)中获取名称。
答案 0 :(得分:0)
问题是HTML模板的结构 - 简而言之,当您拥有ion-list-header
时,它会尝试在ion-label
中呈现该标题的文本。嵌套ion-label
(在ion-item
内)的存在会破坏模板。
相反,根据此处的Ionic文档,您的ion-list-header
不应包含任何子ion-item
元素:https://ionicframework.com/docs/api/components/item/Item/#advanced
如果您重新构建这样的HTML模板,它将起作用:
<ion-list class="setting-content">
<ng-container *ngFor="let item of addonCategories">
<ion-list-header no-lines>{{item.name}}</ion-list-header>
<ion-item-group class="fst-group">
<ion-item *ngFor="let addOn of item.addonItems" no-lines>
<ion-label>{{addOn.name}}</ion-label>
<ion-checkbox (click)="clickAddon(addOn)" item-right></ion-checkbox>
</ion-item>
</ion-item-group>
</ng-container>
</ion-list>
在第3行注意ion-list-header
已打开&amp;闭合。
由于需要嵌套的*ngFor
指令 - 我猜这是你试图在标题中嵌入ion-item
元素的原因 - 我使用的是ng-container
。这样,您仍然可以遍历每个“标题”项目的嵌套addonItems
数组。
在这里工作Plnkr:https://embed.plnkr.co/RSd1MdmajLxpdZmTHk8J/