javascript - Meteor 方法成功更新了数据库，但向 Meteor.call 返回 500 错误

Question

我现在正在阅读《Discover Meteor》一书，并尝试使用 Method.call 来编辑帖子(第 8 章)，而不是使用更新/删除客户端数据操作。

该调用成功调用了 postModify 方法，并且该方法更新了 Posts 集合。问题在于该方法返回 500 内部服务器错误而不是返回 Meteor.call 的结果。

我认为触发错误的 Posts.update 或 postModify 方法中的 return 语句有问题。

这是电话。

Template.postEdit.events({
    'submit form': function(e) {
        e.preventDefault();

        var postProperties = {
            url: $(e.target).find('[name=url]').val(),
            title: $(e.target).find('[name=title]').val(),
            _id: this._id
        };    

Meteor.call('postModify', postProperties, function (error, result) {
            if (error)
            return alert(error.reason);

            Router.go('postPage', {_id: result._id});
        }); } });

这是 postModify Meteor 方法。

Meteor.methods({
            postModify: function(updatedPost) {

            var currentPostId = updatedPost._id;

            var newTitle = updatedPost.title;

            var newUrl =  updatedPost.url;

            var modifiedPost = Posts.update({_id: currentPostId}, {$set: {
            title: newTitle,
            url: newUrl
        }});

    console.log("the post has been updated");

    return {
        _id: modifiedPost
    }; } });

这是路线:

Router.route('/posts/:_id', {
    name: 'postPage',
    data: function() {
        return Posts.findOne(this.params._id); }
});

这是来自 websocket 的消息:

["{\"msg\":\"method\",\"method\":\"postModify\",\"params\":[{\"url\":\" testing.com\",\"title\":\"Daniel is1\",\"_id\":\"apT8KEC7z8ci3TFD4\"}],\"id\":\"2\"}"]

a["{\"msg\":\"result\",\"id\":\"2\",\"error\":{\"error\":500,\"reason\":\"Internal server error\",\"message\":\"Internal server error [500]\",\"errorType\":\"Meteor.Error\"}}"]

下一行显示集合已成功更新:

a["{\"msg\":\"changed\",\"collection\":\"posts\",\"id\":\"apT8KEC7z8ci3TFD4\",\"fields\":{\"title\":\"Daniel is1\"}}"]

这是来自 shell 的日志:

I20151006-10:27:14.098(-7)? the post has been updated
I20151006-10:27:14.099(-7)? { isSimulation: false,
I20151006-10:27:14.099(-7)?   _unblock: [Function],
I20151006-10:27:14.099(-7)?   _calledUnblock: false,
I20151006-10:27:14.099(-7)?   userId: 'cLzs8ixMfgXeHLXLc',
I20151006-10:27:14.099(-7)?   _setUserId: [Function],
I20151006-10:27:14.100(-7)?   connection: 
I20151006-10:27:14.100(-7)?    { id: 'bXSjdEXHC3utPYMDn',
I20151006-10:27:14.100(-7)?      close: [Function],
I20151006-10:27:14.100(-7)?      onClose: [Function],
I20151006-10:27:14.100(-7)?      clientAddress: '127.0.0.1',
I20151006-10:27:14.100(-7)?      httpHeaders: 
I20151006-10:27:14.100(-7)?       { 'x-forwarded-for': '127.0.0.1',
I20151006-10:27:14.101(-7)?         host: 'localhost:3000',
I20151006-10:27:14.101(-7)?         'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36',
I20151006-10:27:14.101(-7)?         'accept-language': 'en-US,en;q=0.8' } },
I20151006-10:27:14.101(-7)?   randomSeed: null,
I20151006-10:27:14.101(-7)?   randomStream: null } 'apT8KEC7z8ci3TFD4' 'Daniel is1' ' testing.com' 1
I20151006-10:27:14.109(-7)? Exception while invoking method 'postModify' Error: Did not check() all arguments during call to 'postModify'
I20151006-10:27:14.109(-7)?     at [object Object]._.extend.throwUnlessAllArgumentsHaveBeenChecked (packages/check/packages/check.js:365:1)
I20151006-10:27:14.110(-7)?     at Object.Match._failIfArgumentsAreNotAllChecked (packages/check/packages/check.js:120:1)
I20151006-10:27:14.110(-7)?     at maybeAuditArgumentChecks (livedata_server.js:1689:18)
I20151006-10:27:14.110(-7)?     at livedata_server.js:708:19
I20151006-10:27:14.110(-7)?     at [object Object]._.extend.withValue (packages/meteor/dynamics_nodejs.js:56:1)
I20151006-10:27:14.110(-7)?     at livedata_server.js:706:40
I20151006-10:27:14.111(-7)?     at [object Object]._.extend.withValue (packages/meteor/dynamics_nodejs.js:56:1)
I20151006-10:27:14.111(-7)?     at livedata_server.js:704:46
I20151006-10:27:14.111(-7)?     at tryCallTwo (/Users/danielvitiello/.meteor/packages/promise/.0.5.0.97m7hz++os+web.browser+web.cordova/npm/node_modules/meteor-promise/node_modules/promise/lib/core.js:45:5)
I20151006-10:27:14.111(-7)?     at doResolve (/Users/danielvitiello/.meteor/packages/promise/.0.5.0.97m7hz++os+web.browser+web.cordova/npm/node_modules/meteor-promise/node_modules/promise/lib/core.js:171:13)

感谢您关注这个问题。

Answer 1

当您添加audit-argument-checks包时，您必须检查传递给您的方法和发布者的所有参数。更新您的代码，使其看起来像这样:

Meteor.methods({
  postModify: function(updatedPost) {
    check(updatedPost, {_id: String, title: String, url: String});
    // rest of method goes here

请参阅docs了解更多详细信息和选项。