雙向數據綁定無法按預期的方式工作
[英]two way data binding not working as expected in angular
問題描述
我試圖通過從輸入中獲取數據並將其實時顯示在注釋框中來實現兩種方式的數據綁定。
這是我的HTML代碼。
<body>
<div class="container">
<div class="row row-content">
<div class="col-xs-12" ng-controller="dishDetailController as dish">
<ul class="media-list">
<li class="media">
<div class="media-left media-middle">
<a href="#">
<img class="media-object img-thumbnail" ng-src="{{dish.image}}" alt="Uthapizza">
</a>
</div>
<div class="media-body">
<h2 class="media-heading">{{dish.name}}
<span class="label label-danger">{{dish.label}}</span>
<span class="badge">{{dish.price | currency}}</span>
</h2>
<p>{{dish.description}}</p>
</div>
</li>
</ul>
</div>
<div class="col-xs-9 col-xs-offset-1" ng-controller="dishDetailController as dish">
<h3>Customer Comments
<small>Sort by:
<input type="text" ng-model="dish.date">
</small>
</h3>
<blockquote ng-repeat="dish in dish.comments | orderBy: dish.date ">
<p>{{dish.rating}} stars</p>
<p>{{dish.comment}}</p>
<small>{{dish.author}} {{dish.date | date}}</small>
</blockquote>
<blockquote ng-controller="DishCommentController">
<p>{{holder.author}}</p>
<!-- achieve data binding here -->
</blockquote>
</div>
</div>
<div class="form-horizontal" role="form" name='commentForm' ng-controller="DishCommentController">
<div class="form-group">
<label class="col-xs-offset-1 col-xs-2 control-label">Your Name</label>
<div class="col-xs-5">
<input type="text" class="form-control" placeholder="Enter Your name" ng-model="holder.author">
</div>
</div>
這是我的Javascript代碼。
'use strict';
angular.module('confusionApp', [])
.controller('MenuController', ['$scope', function($scope) {
$scope.tab = 1;
$scope.filtText = '';
$scope.showDetails = false;
var dishes = [{
name: 'Uthapizza',
image: 'images/uthapizza.png',
category: 'mains',
label: 'Hot',
price: '4.99',
description: 'A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.',
comment: ''
},
{
name: 'Zucchipakoda',
image: 'images/zucchipakoda.png',
category: 'appetizer',
label: '',
price: '1.99',
description: 'Deep fried Zucchini coated with mildly spiced Chickpea flour batter accompanied with a sweet-tangy tamarind sauce',
comment: ''
},
{
name: 'Vadonut',
image: 'images/vadonut.png',
category: 'appetizer',
label: 'New',
price: '1.99',
description: 'A quintessential ConFusion experience, is it a vada or is it a donut?',
comment: ''
},
{
name: 'ElaiCheese Cake',
image: 'images/elaicheesecake.png',
category: 'dessert',
label: '',
price: '2.99',
description: 'A delectable, semi-sweet New York Style Cheese Cake, with Graham cracker crust and spiced with Indian cardamoms',
comment: ''
}
];
$scope.dishes = dishes;
$scope.select = function(setTab) {
$scope.tab = setTab;
if (setTab === 2) {
$scope.filtText = "appetizer";
} else if (setTab === 3) {
$scope.filtText = "mains";
} else if (setTab === 4) {
$scope.filtText = "dessert";
} else {
$scope.filtText = "";
}
};
$scope.isSelected = function(checkTab) {
return ($scope.tab === checkTab);
};
$scope.toggleDetails = function() {
$scope.showDetails = !$scope.showDetails;
};
}])
.controller('ContactController', ['$scope', function($scope) {
$scope.feedback = {
mychannel: '',
firstName: "",
lastName: "",
agree: false,
email: ""
};
$scope.channels = [{
value: 'tel',
label: 'Tel.'
}, {
value: 'Email',
label: 'Email'
}];
$scope.invalidChannelSelection = false;
}])
.controller('FeedbackController', ['$scope', function($scope) {
$scope.sendFeedback = function() {
console.log($scope.feedback);
if ($scope.feedback.agree && ($scope.feedback.mychannel == "")) {
$scope.invalidChannelSelection = true;
console.log('incorrect');
} else {
$scope.invalidChannelSelection = false;
$scope.feedback = {
mychannel: "",
firstName: "",
lastName: "",
agree: false,
email: ""
};
$scope.feedback.mychannel = "";
$scope.feedbackForm.$setPristine();
console.log($scope.feedback);
}
}
}])
.controller('dishDetailController', ['$scope', function($scope) {
var dish = {
name: 'Uthapizza',
image: 'images/uthapizza.png',
category: 'mains',
label: 'Hot',
price: '4.99',
description: 'A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.',
comments: [
{
rating: 5,
comment: "Imagine all the eatables, living in conFusion!",
author: "John Lemon",
date: "2012-10-16T17:57:28.556094Z"
}, {
rating: 4,
comment: "Sends anyone to heaven, I wish I could get my mother-in-law to eat it!",
author: "Paul McVites",
date: "2014-09-05T17:57:28.556094Z"
}, {
rating: 3,
comment: "Eat it, just eat it!",
author: "Michael Jaikishan",
date: "2015-02-13T17:57:28.556094Z"
}, {
rating: 4,
comment: "Ultimate, Reaching for the stars!",
author: "Ringo Starry",
date: "2013-12-02T17:57:28.556094Z"
}, {
rating: 5,
comment: "It's your birthday, we're gonna party!",
author: "25 Cent",
date: "2011-12-02T17:57:28.556094Z"
},
]
};
$scope.dish = dish;
dish.date = '';
}])
.controller('DishCommentController', ['$scope', function($scope) {
//Step 1: Create a JavaScript object to hold the comment from the form
$scope.holder = {
rating: 5,
author: '',
comment: ''
};
$scope.submitComment = function() {
//Step 2: This is how you record the date
$scope.date = new Date().toISOString();
// Step 3: Push your comment into the dish's comment array
$scope.dish.comments.push($scope.holder);
//Step 4: reset your form to pristine
//Step 5: reset your JavaScript object that holds your comment
}
}])
;
我無法弄清楚如何使其工作。
1 個解決方案
解決方案1
0 2017-04-08 16:44:48
我找到了答案。 問題是我使用了太多的控制器，並且每個控制器都創建了不同的作用域。 因此，我無法獲得想要的結果。
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