模型更改后ngRepeat不更新 [英] ngRepeat not updating after model changed
问题描述
我特林code稍微搜索输入，从使用ngResource数据库获取数据。
I'm tring to code a little search input to get data from a database using ngResource.
数据显示在一个NG重复的页面，但是当我做搜索和$范围已被更新，视图不更新，并显示旧数据。
the data are shown in the page with a ng-repeat, but when i do the search and the $scope has been updated, the view is not updated and show old data.
下面是code：
main.html中（活动视图）
main.html (active view)
<div ng-controller="searchCtrl as searchCtrl" layout="column">
<form class="form-inline search-form col-md-offset-1">
<div class="form-group col-md-5">
<label class="sr-only" for="search_location">Location</label> <input
id="search_location" type="search" class="form-control"
ng-Autocomplete ng-model="place" placeholder="Location" />
</div>
<div class="form-group col-md-5">
<label class="sr-only" for="search_tags">Tags</label> <input
style="width: 100%;" id="search_tags" type="search"
class="form-control" id="search_tags" placeholder="Tags">
</div>
<div class="col-md-1">
<md-button class="md-fab md-mini" aria-label="Search" ng-click="searchCtrl.search()"> <md-icon class="md-fab-center"
md-font-icon="glyphicon glyphicon-search" style="color: black;"></md-icon>
</md-button>
</div>
</form>
</div>
<div ng-controller="mainCtrl">
<div ng-repeat="evento in eventi" ng-include="'views/components/event_card.html'" class="col-md-3"></div>
</div>
main.js
main.js
'use strict';
app.factory('Eventi', function($resource) {
return $resource('/eventsws/events/:location', {location : '@location'}, {
search: {
method: 'GET',
params: {
'location' : "@location"
},
isArray : true
}
})
});
app.controller('mainCtrl', function($scope, Eventi) {
$scope.eventi = Eventi.query();
});
searchbar.js
searchbar.js
'use strict';
app.controller('searchCtrl', function($scope, Eventi) {
$scope.place = null;
this.search = function() {
$scope.eventi = Eventi.search({
'location' : $scope.place
});
}
});
当它开始它从数据库中获取的所有数据并正确显示这些，当我尝试做一个搜索时，$ scope.eventi进行更新（我可以看到从调试到$ scope.eventi新的数据）但视图仍显示旧的数据，而不会更新。
when it start it get all the data from the database and display them correctly, when i try to make a search, the $scope.eventi is updated (i can see the new data in $scope.eventi from the debug) but the view still show the old data and never update.
我试着使用$范围。$适用于搜索功能的结束，但结果是一样的。
I've tried to use $scope.$apply at the end of the search function but the result is the same.
有你，为什么它不工作任何想法？
Have you any idea why it's not working?
感谢您的时间。
推荐答案
在$ scope.eventi你看到的调试是一个在你searchCtrl，而不是一个来自你的mainCtrl。要更新您的mainCtrl $ scope.eventi你必须找到一个办法了。
The $scope.eventi you see in the debug is the one in your searchCtrl and not the one from your mainCtrl. To update your mainCtrl $scope.eventi you have to find an other way.
一个干净的，但长期的解决办法是在控制器中使用到的变量共享服务。
A clean but long solution would be using services to shares variables in your controllers.
要回答这个问题的意见：
To answer the question in comments :
我可以看到它更新，但认为仍显示旧的数据
i can see it updated, but the view still show the old data
我想什么问题（即使我居然没看到你的code）。
I guess what's the problem (even if i actually didn't see your code).
如果您绑定您的VAR是这样的：
If you bind your var like this :
服务
[...]
service.serviceVar = 1;
return service
[...]
这将创建一个参考1变种。
This will create a "1" var with a reference.
控制器
[...]
$scope.myvar = Service.serviceVar;
[...]
这将绑定$ scope.myvar到1的参考。
This will bind $scope.myvar to the "1" reference.
如果你在你的服务或在其他控制器做到这一点：
If you do this in your service or in an other controller :
service.serviceVar = 2;
您将创建一个新变种2一个新的参考，你将赋予该参考service.serviceVar。严重到老1 VAR所有的旧的引用将不会更新。
You will create a new var "2" with a new reference and you will assign this reference to service.serviceVar. Badly all your old references to the old 1 var will not update.
要避免做这样的：
服务
[...]
service.servicevar = {};
service.servicevar.value = 1;
return service
[...]
您创建一个新的参考对象并将其分配给servicevar。
您创建一个变种1，并将其分配给servicevar.value。
You create an object with a new reference and assign it to servicevar. You create a var "1" and assign it to servicevar.value.
控制器
[...]
$scope.myvar = Service.servicevar;
[...]
您指定servicevar参考你的范围变种。
You assign the servicevar reference to your scope var.
查看
{{myvar.value}}
您可以通过使用VAR的财产使用的值。
You can use the value by using the property of your var.
更新VAR这样做：
service.servicevar.value = 2;
您将创建一个新变种2一个新的参考，并取代这一个老参考。
You will create a new var "2" with a new reference and replace the old reference by this one.
但这次你保持servicevar所有的引用在控制器。
BUT this time you keep all your references to servicevar in your controllers.
我希望我是清楚的，并回答你的问题。
I hope i was clear and it answer your question.
编辑：
尝试从来没有使用$范围。$适用。这是一个非常不好的做法。如果你用它来使一些工作，你应该找一个其他的做到这一点（这将是对堆栈一个很大的问题我想：为什么我需要$适用于解决我的问题XXXXX）
Try to never ever use $scope.$apply. It's a really bad practice. If you use that to make something works, you should probably find an other to do that (And it will be a great question for Stacks i guess : "Why do i need $apply to solve my problem XXXXX")
rsnorman15有关于你的异步调用的使用好点。看看他的回答了。
rsnorman15 has a good point about your uses of asynchronous calls. Take a look at his answer too.
下面是使用服务共享的属性我老plunker之一
Here is one of my old plunker using a service to share properties
这篇关于模型更改后ngRepeat不更新的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
