在 Angular 中,在选定的选项上为其他选项设置默认值 [英] In Angular, on selected option set default values for other options
问题描述
问题:如何将 selected sizes
作为索引来映射和显示正确的 price
和 tsin
eq 到尺寸
索引
注意:
我正在尝试在尺寸、价格、tsin 之间建立关系
"黑色": {"sizes": "X 小,小","价格": '$22.24, $24.94',"tsin": "111002, 111003"},
例如如果选择黑色并且选择的尺寸为索引 [0](或 - X 小),那么在 ng-change 时,价格将更新为 22.24 美元,tsin 为 111002
<小时>更新:我已经更新了小提琴以接近一点,但原型继承不存在.我只是想说明想要的效果
简单看一下这个
html
<select ng-model="item.mySize" ng-change="setCurrentPrice(val.sizes.split(','),val.prices.split(','),val.tsin.split(','))" ng-options="choice as selection for (idx, choice) in val.sizes.split(',')"><option value="">请选择尺寸</option></选择>
脚本
$scope.setCurrentPrice = function(sizes, price, tsin) {var index = size.indexOf($scope.item.mySize);$scope.item.myPrice = 价格[索引];$scope.item.myTsin = tsin[index];$scope.item.currentPrice = 价格[指数];$scope.item.mySize = 尺寸[索引];};
Question:
How can I take the selected sizes
as an index to map and display the proper price
and tsin
eq to the sizes
index
Notice:
I'm trying to create a relationship between sizes, prices, tsin
"Black": { "sizes": "X Small, Small", "prices": '$22.24, $24.94', "tsin": "111002, 111003" },
e.g. if the color black was picked and the size selected was of index [0](or - X Small) then on ng-change the price would update to $22.24 and the tsin is 111002
UPDATE: I've updated the fiddle to get a bit closer but the prototypical inheritance isn't there. I just wanted to illustrate the desired effect
UPDATED 2x Callebe gave me a solution that gotten me closer but still not desired or working properly
JSFiddle
I have a simple controller with some fake data coming in from an $http:
var app = angular.module("app", []);
app.controller('Ctrl', function ($scope, $filter, $http) {
//lowest price is coming in from the init api request on production
var lowestPrice = '$21.24';
// exposes currentPrice to the view
$scope.currentPrice = lowestPrice;
// function to change the currentPrice to the selected Products price
$scope.getCurrentPrice = function(idx) {
$scope.currentPrice = idx;
}
//fake data that simulates a piece of the json object response.
$scope.productData = {
"colors_and_sizes": {
"data": {
"Black": {
"prices": '$21.24, $29.94',
"swatch_image": 'http://lorempixel.com/50/50',
"sizes": "X Small, Small",
"prices": '$22.24, $24.94',
"tsin": "111002, 111003"
},
"Blue": {
"swatch_image": 'http://lorempixel.com/50/51',
"sizes": "X Small, Small",
"prices": '$22.24, $24.94',
"tsin": "112005, 112007"
}
}
}
};
});
Notice:
- I know i know, The data is coming in pretty badly for what I'm trying to do.
the sizes prices and tsin
are strings. However, I split them them when I get to the view:
<form ng-app="app" ng-controller="Ctrl" ng-init="item = this">
<div class="color-pick"
ng-repeat="(key, val) in productData.colors_and_sizes.data track by $index">
<input
type="radio"
name="colors"
hidden="true"
ng-model="item.myColor"
ng-value="key" />
<img
ng-click="item.myColor = key"
ng-src="{{val.swatch_image}}"
alt="">
{{key}}
<div class="size-pick" ng-show="item.myColor==key">
<select
ng-model="item.mySize"
<!--split the sizes into an array call it choice -->
<!--idx as choice could be idx to get key but then breaks the value cannot do (idx, choice) as choice for (idx, choice) in val.sizes.split(',') -->
ng-options="choice as choice for (idx, choice) in val.sizes.split(',')">
<option value="">Please select a size</option>
ng-change="setCurrentPrice(val.sizes.split(',')[idx])"
</select>
</div>
</div>
</form>
in the end I would like 4 values to be displayed on the view:
mySize: {{ item.mySize}}
myColor: {{item.myColor}}
myPrice: {{item.currentPrice}}
myTsin: {{item.myTsin}}
Again please check out my (OLD FIDDLE UPDATE ABOVE) JSfiddle
Its simple take a look at this
html
<select ng-model="item.mySize" ng-change="setCurrentPrice(val.sizes.split(','),val.prices.split(','),val.tsin.split(','))" ng-options="choice as choice for (idx, choice) in val.sizes.split(',')">
<option value="">Please select a size</option>
</select>
script
$scope.setCurrentPrice = function(sizes, prices, tsin) {
var index = sizes.indexOf($scope.item.mySize);
$scope.item.myPrice = prices[index];
$scope.item.myTsin = tsin[index];
$scope.item.currentPrice = prices[index];
$scope.item.mySize = sizes[index];
};
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