Backbone.js:Collection.Get(id)->忽略大小写 [英] Backbone.js: Collection.Get(id) -> Ignore case

问题描述

我有以下模型和集合:

var UserModel = Backbone.Model.extend({
    url: 'api/user',
    idAttribute:'username',
    defaults: {
        username:'',
        password:'',
        email:'',
        tags:''
    }
});
var UserCollection= Backbone.Collection.extend({
    url: 'api/user',
    model: UserModel
});

当我使用以下方法从集合中检索用户时:

When I retrieve a user from the collection using:

var myUser  =   collection.get(username);

用户名必须使用正确的大小写，否则我只会得到null.

the username has to be in the correct case, otherwise I just get null as a result.

是否有一种方法可以告诉主干忽略某些类似操作的情况?

Is there a way to tell backbone to ignore the case for certain operations like this on?

推荐答案

当然，您只需要更改相关代码即可.它位于 backbone.js 的 240-242 行上(适用于有记录的0.9.2版本):

Sure, you just need to change the relevant code. It is on lines 240-242 of backbone.js (for documented 0.9.2 version):

get: function(attr) {
  return this.attributes[attr];
},

将其更改为:

get: function(attr) {
   // will skip if null or undefined -- http://stackoverflow.com/questions/5113374/javascript-check-if-variable-exists-which-method-is-better
   if (this.attributes[attr] != null) {
       return this.attributes[attr];
   }
   // and then try to return for capitalized version -- http://stackoverflow.com/questions/1026069/capitalize-the-first-letter-of-string-in-javascript
   else {           
       return this.attributes[attr.charAt(0).toUpperCase() + attr.slice(1)];
   }
},

用于更改收藏集

get: function(id) {
  if (id == null) return void 0;
  return this._byId[id.id != null ? id.id : id];
},

可能会起作用:

get: function(id) {
  if (id == null) return void 0;
  var firstCase = this._byId[id.id != null ? id.id : id];
  if (firstCase != null) {
      return firstCase;
  }
  else {
      return this._byId[capitalize(id.id) != null ? capitalize(id.id) : capitalize(id)];
  }
},

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