Angularjs 按id获取文章
我对ionic和angular都是新手,无法按id获取文章,我从api获取文章列表,这是可行的,但按id获取文章是不可行的。这是我的代码: 控制器:Angularjs 按id获取文章,angularjs,ionic-framework,angular-ui-router,Angularjs,Ionic Framework,Angular Ui Router,我对ionic和angular都是新手,无法按id获取文章,我从api获取文章列表,这是可行的,但按id获取文章是不可行的。这是我的代码: 控制器: angular.module('myApp.controllers', []) .controller('FrontPageController', function($scope, ArticleService) { ArticleService.all().then(function(data){ $scope.articles
angular.module('myApp.controllers', [])
.controller('FrontPageController', function($scope, ArticleService) {
ArticleService.all().then(function(data){
$scope.articles = data;
})
})
.controller('ArticleController', function($scope, ArticleService, $stateParams) {
var article = ArticleService.get($stateParams.id);
});
.controller('ArticleController', function($scope, ArticleService, $stateParams) {
ArticleService.get($stateParams.id).then(function(response) {
$scope.article = response;
})
});
服务:
.factory('ArticleService', function($http) {
return {
all: function() {
return $http.get("http://myApp.app/api/articles/latest").then(function(response){
articles = response.data;
return articles;
});
},
get: function(id) {
var articles = this.all();
for (var i in articles) {
if (articles[i].id == id) {
return articles[i];
}
}
return {};
}
};
});
get: function(id) {
return this.all().then(function(response) {
var articles = response;
for (var i in articles) {
if (articles[i].id == id) {
return articles[i];
}
}
return {};
})
}
和列表视图:
<ion-item ng-repeat="article in articles" href="#/main/article/{{article.id}}">
<div class="list card">
<div class="item item-avatar">
<h3>{{ article.title }}</h3>
<div ng-repeat="media in article.medias">
<img src="http://myApp.app/{{media.path}}">
<p>{{media.path}}</p>
</div>
</div>
<div class="item item-body">
<img class="full-image" src="http://myApp.app/{{media.path}}">
<p>
This is a "Facebook" styled Card. The header is created from a Thumbnail List item,
the content is from a card-body consisting of an image and paragraph text. The footer
consists of tabs, icons aligned left, within the card-footer.
</p>
<p>
<a href="#" class="subdued">1 Like</a>
<a href="#" class="subdued">{{ article.commentsCount }} Comments</a>
</p>
</div>
</div>
</ion-item>
对象包含如下所示的值:
category_id:1
commentsCount:3
created_at:"2016-05-10 13:56:45"
id:1
medias:Array[0]
slug:"-11"
summary:"dsvsdv"
text:"<p>sdvsdv</p>"
title:"sdvsdv"
type_id:1
updated_at:"2016-06-02 08:19:46"
user_id:3
__proto__
更新代码
如果将来有人需要的话,这最终对我起了作用
服务:
.factory('ArticleService', function($http) {
return {
all: function() {
return $http.get("http://myApp.app/api/articles/latest").then(function(response){
articles = response.data;
return articles;
});
},
get: function(id) {
var articles = this.all();
for (var i in articles) {
if (articles[i].id == id) {
return articles[i];
}
}
return {};
}
};
});
get: function(id) {
return this.all().then(function(response) {
var articles = response;
for (var i in articles) {
if (articles[i].id == id) {
return articles[i];
}
}
return {};
})
}
控制器:
angular.module('myApp.controllers', [])
.controller('FrontPageController', function($scope, ArticleService) {
ArticleService.all().then(function(data){
$scope.articles = data;
})
})
.controller('ArticleController', function($scope, ArticleService, $stateParams) {
var article = ArticleService.get($stateParams.id);
});
.controller('ArticleController', function($scope, ArticleService, $stateParams) {
ArticleService.get($stateParams.id).then(function(response) {
$scope.article = response;
})
});
在我看来,对象是空的,因为您使用异步方法。调用
this.all()
方法时,将向端点发送HTTP请求。此操作需要时间,在此期间,项目
未定义,因此您不会进入for循环
试试这个:
var articles = this.all().then(function(response) {
var articles = response;
angular.forEach(articles, function(article){
if (article.id == id) {
return article;
}
}
return {};
})
根据AngularJS文档,然后在结果可用时异步调用一个成功或错误回调。因此,这一次文章不会是空的。请显示你的json for article对象你在controller或View中遇到错误我已经用json对象的输出更新了我的问题。我没有收到任何错误。请检查您的$stateParams.id值,并检查控制台上get:function(id)中的articles值。我已再次更新我的问题,并且我从console.log($stateParams.id)获取id;它输出正确的id现在我在get函数中获取对象,但是在我的控制器中,我没有为var article=ArticleService.get($stateParams.id)定义对象;console.log(文章);好的,在if循环中,我做了console.log(articles[I]),得到了正确的对象:object{id:1,title:“sdvsdv”,slug:“-11”,category_id:1},这是相同的问题:异步方法。试着这样做:ArticleService.get($stateParams.id).then(function(response){var article=response;console.log(article);})当我这样做时,我得到了TypeError:Cannot read属性'then'的undefinedI不得不在服务中更改get函数,而不是var articles,现在我得到了对象!非常感谢。