Question

我在我的流星应用程序上运行了upvotes和downvotes但是用户可以根据需要进行upvote和downvote。我试图做到这一点，所以他们只能做一个，如果他们做另一个，它删除前一个。

我的Autoform看起来如下：

ArticleSchema  = new SimpleSchema({
  title: {
    type: String,
    label: "Article title",
    autoform: {
      placeholder: "full article title here"
    }
  },
  url:{
    type: String,
    label:  "URL",
    autoform: {
      placeholder: "http://website.com"
    }
  },
  username:{
    type: String,
    label: "Author",
    autoValue: function() {
      return Meteor.user().username
  }
},
  author:{
    type: String,
    label: "Author",
    autoValue: function() {
      return this.userId
  },
  autoform: {
    type: "hidden"
  }
},
  autoform: {
    type: "hidden"
  }
  },
  createdAt: {
    type: Date,
    label: "Created At",
    autoValue: function(){
      return new Date()
    },
    autoform: {
      type: "hidden"
    }
  },
  upvote: {
    type:Number,
    optional:true
  },
  upVoters:{
    type:Array,
    optional:true
  },
  'upVoters.$':{
    type:String
  },
  downvote: {
    type:Number,
    optional:true
  },
  downVoters:{
    type:Array,
    optional:true
  },
  'downVoters.$':{
    type:String
  },
});

我的活动：

Template.articleOutput.events({
  "click .upvote": function(){
    var articles = Articles.findOne({ _id: this._id });
    if( articles ) {
      if (_.contains(articles.downVoters, this.userId)) {
        Articles.update({
             _id: this._id
          },
          {
            $pull: {
              downVoters: this.userId
            },
            $addToSet: {
              upVoters: this.userId
            },
            $inc: {
              downvote: -1,
              upvote: 1
            }
          }
        );
      }
      Articles.update(this._id, {$addToSet: {upVoters: Meteor.userId()}, $inc: {upvote: 1}});
    }
  },

  "click .downvote": function(){
    var articles = Articles.findOne({ _id: this._id });
    if( articles ) {
      if (_.contains(articles.upVoters, this.userId)) {
        Articles.update({
             _id: this._id
          },
          {
            $pull: {
              upVoters: this.userId
            },
            $addToSet: {
              downVoters: this.userId
            },
            $inc: {
              downvote: 1,
              upvote: -1
            }
          }
        );
      }
      Articles.update(this._id, {$addToSet: {downVoters: Meteor.userId()}, $inc: {downvote: 1}});
    }
  }
});

和HTML：

<template name="articleOutput">
    <div class="outputBoxHome" >
      <div class="vote">
        <div class="upvote">

        </div>
        <div class="downvote">

        </div>
      </div>
      <div class="outputBoxHomeContent">
        <a href="/articles/{{_id}}"><h4>{{title}}</h4></a>
      </div>
    </div>
</template>

使用此代码，用户可以upvote并将其名称添加到upVoter，反之亦然

修改

我使用$ .inArray而不是_.contains

来修复它

if ($.inArray(articles.upVoters, this.userId)) {

Answer 1

我已经使用$ .inArray而不是_.contains修复了它。

Meteor-用户只能进行一次upvote或downvote

1 个答案: