Javascript AngularJS将新数据推送到特定的JSON中
我有一个JSON输出,如下所示:Javascript AngularJS将新数据推送到特定的JSON中,javascript,json,angularjs,Javascript,Json,Angularjs,我有一个JSON输出,如下所示: [{"id":"121","title":"Blog Title","content":"Blog content"}, "comments":[{"id":"12","content":"This is the comment."}]] 我正在通过角度控制器检索阵列: app.controller('BlogController', function($scope, $http) { var blog = this; blog.posts =
[{"id":"121","title":"Blog Title","content":"Blog content"}, "comments":[{"id":"12","content":"This is the comment."}]]
我正在通过角度控制器检索阵列:
app.controller('BlogController', function($scope, $http) {
var blog = this;
blog.posts = [];
$http.get('/process/getPost.php').success(function (data) {
blog.posts=data;
});
$scope.submitComment = function() {
blog.posts.concat($scope.formData);
$http({
method : 'POST',
url : '/process/insertComment.php',
data : $.param($scope.formData), // pass in data as strings
headers: {'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'}
})
.success(function(data) {
console.log(data);
$scope.formData.comment="";
});
};
})
然后在my index.html文件中显示信息:
<div ng-controller="BlogController as blog" ng-cloak class='ng-cloak'>
<div ng-repeat="post in posts">
<div>{{post.title}}</div>
<div>{{post.content}}</div>
</div>
<div ng-repeat="comment in post.comments">
{{comment.content}}
</div>
<form name="commentform" ng-init="formData.id=post.id" novalidate>
<textarea ng-model="formData.comment" name="comment" required></textarea><br>
<input type="submit" ng-disabled="commentform.$invalid" value="Submit" ng-click="submitComment()">
</form>
</div>
一切正常,但我一直在尝试将submitComment update comment.content放在JSON数组中,其中blog id等于post.id,comment id等于comment.id
我试过做blog.post.comment.push$scope.formData,但没有成功。知道它为什么不工作以及如何修复吗?你的行blog.posts.concat$scope.formData;没有被分配到任何地方。请注意,.concat与.sort的不同之处在于您正在创建一个新数组
From:concat方法返回一个新数组,该数组由该数组与其他数组和/或值组成
尝试将行更改为blog.posts=blog.posts.concat$scope.formData
编辑:
我猜您的数据格式更可能需要更改:
var post = blog.posts[blogPostId]; // you'll need to determine blogPostId
post.comments = post.comments.concat($scope.formData);
那可能对你有帮助
这不是有效的JSON:SCan你可以澄清这个问题吗?嗨,因为帖子是帖子的数组,你需要更具体地说明你想添加哪一篇帖子,并且@PixnBits提到你的JSON也是无效的。你能解释为什么它无效吗?粘贴到:这让我找到了我的答案。我最终需要将formData传递到submitComment,然后将formData添加到变量函数中,并使用它清除数据。
$scope.submitComment = function(post) {
$http.post('/process/insertComment.php', post.formData)
.then(function(data) {
console.log(data);
$scope.formData.comment="";
}, function(){
alert("Can't post");
}).then(function(){
//finally as we know that post would work in that case
//find last comment id
var newCommentId = post.comments[post.comments.length-1].id +1;
//create new comment obj
var newComment = {
id:newCommentId,
content:post.formData.comment
};
//push comment in comments array
post.comments.push(newComment);
//clean form
post.formData.comment="";
});
};