Like流星按鈕

Question

我想製作一個像按鈕一樣喜歡食譜，並將喜歡食譜的所有用戶ID添加到數組中選民和更高版本想通過使用._contains多次喜歡同一食譜的用戶同樣的用戶仍然能夠多次喜歡它。你能幫我解決我犯的錯誤嗎？

完整的源代碼Github

Template.recipes.events({ 
    "click [data-action='addLikes']": function (event) { 
     event.preventDefault(); 
     if (_.contains(Recipes.voters, Meteor.userId())) 
      FlashMessages.sendError("You already liked this recipe", {hideDelay: 1000}); 
     Recipes.update(this._id, {$addToSet: {voters: Meteor.userId()}, $inc: {likes: 1}}); 
    } 
}); 

collections.html

Recipes = new Mongo.Collection('recipes'); 
Recipes.attachSchema(new SimpleSchema({ 
    ownerId: { 
     type: String 
    }, 
    ownerName: { 
     type: String 

    }, 
    voters:{ 
     type:Array, 
     optional:true 
    }, 
    'voters.$':{ 
     type:String 
    }, 
    name: { 
     type: String, 
     label: "Recipe Name", 
     max: 100 
    }, 

     ingredients: { 
      type: [Object], 
      minCount: 1 
     }, 

    "ingredients.$.name": { 
    type: String 
     }, 
    "ingredients.$.amount": { 
    type: String 
    }, 
    description: { 
     type: String, 
     label: "How to prepare ", 
    }, 
    time: { 
     type: Number, 
     label: "Time (Minutes)", 
     min:0 
    }, 
    likes:{ 
     type:Number, 
     optional:true 
    }, 
    image: { 
     type: String, 
     autoform: { 
      afFieldInput: { 
       type: "cfs-file", 
       collection: 'recipesImages', 
       label: 'Recipe Picture' 
      } 
     } 
    } 
})); 

add_recipes.html

<template name="add_recipes"> 
    <div class="container"> 
     {{#autoForm collection="Recipes" id="insertRecipes" type="insert"}} 
      <fieldset> 
       <legend>Add a Recipe</legend> 
       {{> afQuickField name='name'}} 
       {{> afQuickField name='ingredients'}} 
       {{> afQuickField name='description' rows=6}} 
       {{> afQuickField name='time'}} 
       {{> afQuickField name="image" }} 
       {{> afQuickField name="likes" value="0" type="hidden" }} 
       {{> afQuickField name='ownerId' type="hidden" value=currentUserId}} 
       {{> afQuickField name='ownerName' type="hidden" value=currentUserName}} 
       {{> afQuickField name='voters' type="hidden" value=""}} 
      </fieldset> 
      <button type="submit" class="btn btn-primary">Add Recipe</button> 
     {{/autoForm}} 
    </div> 

Answer 1

我認爲你需要找到一個實際的食譜你的if塊。例如：

event.preventDefault(); 
var recipe = Recipes.findOne({ _id: this._id }); 
if(recipe) { 
    if (_.contains(recipe.voters, Meteor.userId())) { 
     FlashMessages.sendError("You already liked this recipe", {hideDelay: 1000}); 
    } 
    Recipes.update(this._id, {$addToSet: {voters: Meteor.userId()}, $inc: {likes: 1}}); 
}