在陣列中搜索特定值

Question

我試圖搜索陣列以找到this._id。 studentId returns正確的ID但是fav returnsObject {_id: "fMNS3M5dW356C46Sq", emails: Array[1], profile: Object, roles: Array[2]}

我怎麼var fav返回數組中的studentId或者如果ID沒有找到返回null？

路徑：基於您的評論list.js

Template.list.events({ 
'click .favourite':function(event,template) { 
     console.log('click'); 
     var studentId = this._id; 
     var fav = Meteor.users.findOne({"profile.favorites": studentId }); 

     console.log(fav); 

     if (candidateId === fav) { 
      Meteor.users.update({_id: Meteor.userId()}, {$pull:{"profile.favorites":studentId}}); 
     } else { 
      Meteor.users.update({_id: Meteor.userId()}, {$push:{"profile.favorites":studentId}}); 
     }; 
    } 
}); 

Answer 1

，我想你想：

Template.list.events({ 
    'click .favourite':function(event,template) { 
    console.log('click'); 
    var studentId = this._id; 
    var fav = null; 

    if(Meteor.users.findOne({"profile.favorites": studentId })) { 
     fav = studentId; 
    } 
    if (candidateId === fav) { 
     Meteor.users.update({_id: Meteor.userId()}, {$pull:{"profile.favorites":studentId}}); 
    } else { 
     Meteor.users.update({_id: Meteor.userId()}, {$push:{"profile.favorites":studentId}}); 
    }; 
    } 
}); 

這將設置最愛是studentId如果有什麼Meteor.users.findOne回報。