[英]How to force update view from directive event in Angularjs
I have a work and stuck it 2 days. 我有工作,坚持了2天。 Hope everyone know angularjs help me :).
希望大家都知道angularjs帮助我:)。 I need to force a change html when have a change on model.
我需要在模型上进行更改时强制更改html。 Example:
例:
This is html code: 这是HTML代码:
<!--CAKE LIST-->
<div id="cakelist" ng-controller="CakeListCtrl">
<ul class="thumbnails cake-rack" cakes="cakes" ng-model="cakesModel">
<li class="pull-left cake-unit" ng-repeat="cake in cakes" cake="cake">
<div class="thumbnail">
<a href="{{cake.link}}">
<img ng-src="{{cake.avatar}}" alt="{{cake.title}}" class="img img-rounded img-polaroid" />
</a>
<h5 class="pull-left">
<a href="{{cake.link}}">{{cake.title}}</a>
</h5>
<a href="{{cake.linksearch}}" class="pull-right shared">Shared</a>
<div class="clearfix"></div>
<ul class="attrs unstyled">
<li>
<div class="pull-left">Mã sản phẩm</div>
<span class="pull-right">{{cake.type}}</span>
</li>
</ul>
</div>
</li>
</ul>
<input type="button" class="btn btn-primary" value="add more cake" class="cake-more" ng-click="addCake()" />
<input type="button" class="btn btn-danger" value="clear cake" class="cake-clear" ng-click="clear()" />
<img alt="Loading" src="/imagesroot/ajax-loader-1.gif" loading-stage="loadingStage" class="cake-loading"/>
</div>
now a have a menu outside of controller: 现在有一个控制器外的菜单:
<div id="cake-catalog" class="cake-catalog">
<ul class="nav">
<li class="active">
<a cake-menu-unit href="sacmscategory50c2302b7ff0a">Nhân vật hoạt hình</a>
</li>
<li>
<a cake-menu-unit href="sacmscategory50c2308717a84">Động vật</a>
</li>
<li>
<a cake-menu-unit href="sacmscategory50c2309da00f6">Tạo hình 3D</a>
</li>
<li>
<a cake-menu-unit href="sacmscategory50c230ba08d9d">Các mẫu hình khác</a>
</li>
</ul>
</div>
I have angular module for add and clear: 我有角度模块添加和清除:
var CakeList = angular.module('CakeList', ['ngResource']);
CakeList.service('CakeService', function($rootScope) {
var cakedata = [{avatar:"test", title: "test2"}];
$rootScope.loadCake = false;
var bf = function() { $rootScope.loadCake=true; };
var at = function() { $rootScope.loadCake=false; };
return {
cakes: function() {
bf();
at();
return cakedata;
},
addCake: function() {
bf();
cakedata.push(cake);
at();
},
clear: function() {
cakedata = []; console.log('clear');
}
};
});
CakeList.directive('cakeCatalog', function($rootScope, CakeService) {
var clickfn = function(e) {
e.preventDefault();
CakeService.clear();
};
var nonclickfn = function(e) {
e.preventDefault();
console.log('nonclickfn');
};
return {
restrict: "C",
link: function(scope, element, attrs) {
$rootScope.$watch('loadCake', function(newValue, oldValue) {
if (newValue===true) {
element.find('a').off('click').on('click', nonclickfn);
}
else {
element.find('a').off('click').on('click', clickfn);
}
});
}
};
But when runtime, i put click on a element of menu then the list cake not clear, even i check console.log in console box and see the cakedata really clear!. 但是当运行时,我点击菜单元素然后列表蛋糕不清楚,即使我在控制台框中检查console.log并看到cakedata真的很清楚! Can you help me this case ?
你能帮这个案子吗? :)
:)
First of all, the design seems a bit weird by using everywhere $rootScope (among other things). 首先,通过使用$ rootScope(除其他事项)之外的设计似乎有点奇怪。 But that's not the cause of the problem.
但这不是问题的原因。 The problem is the $watch which is not correct.
问题是$ watch不正确。
First of all, use loadCake
as an object instead of a primitive type: 首先,使用
loadCake
作为对象而不是基本类型:
var loadCake = { loaded: false};
Use the objectEquality parameter in your $watch statement: 在$ watch语句中使用objectEquality参数:
$rootScope.$watch('loadCake', function(newValue, oldValue) {
if (!newValue) return;
if (newValue.loaded === true) {
element.find('a').off('click').on('click', nonclickfn);
}
else {
element.find('a').off('click').on('click', clickfn);
}
}, true);
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