重组meteor更新片段

Question

我有这段代码

         Requestor.update({ _id: theid }, {$set: {
          "reqestmadebyid": doc.reqestmadebyid,
          "requestschoolid": doc.requestschoolid,
          "requestmadebynames": doc.requestmadebynames,
          "requestmadeon": doc.requestmadeon,
          "requesttype": doc.requesttype,
          "requestdescription": doc.requestdescription,
          "requestparameter1": doc.requestparameter1,
          "requestparameter2" : doc.requestparameter2,
          "requestparameter3" : doc.requestparameter3,
          "requestparameter4" : doc.requestparameter4,
          "requestparameter5" : doc.requestparameter5,
          "requestparameter6" : doc.requestparameter6,
          "requestparameter7" : doc.requestparameter7,
          "requeststatus" : doc.requeststatus,
          "requestdenialexplanation" : doc.requestdenialexplanation
             }
             });

我用来更新表单。有没有一种方法可以让它像我们在插入过程中那样变小？。

Answer 1

不能说这个更小，但维护起来更容易。

var fields = [
'reqestmadebyid', 
'requestschoolid', 
'requestmadebynames', 
'requestmadeon', 
'requesttype', 
'requestdescription', 
'requestparameter1', 
'requestparameter2', 
'requestparameter3', 
'requestparameter4', 
'requestparameter5', 
'requestparameter6', 
'requestparameter7', 
'requeststatus', 
'requestdenialexplanation'
];

var updateSet = fields.reduce(function(data, field) {
  return data[field] = doc[field];
}, {});

Requestor.update({ _id: theid }, {$set: updateSet});

使用lodash npm包的更紧凑的例子：

var fields = [
'reqestmadebyid', 
'requestschoolid', 
'requestmadebynames', 
'requestmadeon', 
'requesttype', 
'requestdescription', 
'requestparameter1', 
'requestparameter2', 
'requestparameter3', 
'requestparameter4', 
'requestparameter5', 
'requestparameter6', 
'requestparameter7', 
'requeststatus', 
'requestdenialexplanation'
];

Requestor.update({ _id: theid }, {$set: _.pick(doc, fields)});