Question

在使用Ember CLI时，有人可以向我解释如何进行猴子修补吗？这是关于以下方法：

https://github.com/emberjs/data/blob/fba5e5f09824caab3dfaf0e746f760b3eeacd269/packages/ember-data/lib/system/relationships/relationship.js#L284

BelongsToRelationship.prototype.addRecord = function(newRecord) {
  if (this.members.has(newRecord)){ return;}
  var type = this.relationshipMeta.type;
  Ember.assert("You can only add a '" + type.typeKey + "' record to this relationship", newRecord instanceof type);

  if (this.inverseRecord) {
    this.removeRecord(this.inverseRecord);
  }

  this.inverseRecord = newRecord;
  this._super$addRecord(newRecord);
};

我希望暂时禁用assert语句但是我没有看到如何在不分支整个项目的情况下执行此操作。然后我还需要分叉ember-data bower包项目然后创建我自己的发行版。

- 托马斯

Answer 1

BelongsToRelationship的定义方式不能通过全局范围访问。但是，您可以通过实例化具有DS.belongsTo关系的模型并在其中挖掘来检索它。

这个初始化器应该可以解决这个问题：

// app/initializers/monkey-patch.js

import DS from 'ember-data';
import Ember from 'ember';

//Hacky way to get BelongsToRelationship constructor
var getBelongsToConstructor = function(store) {
  var dummyRecord = store.createRecord(DS.Model.extend({
    dummy: DS.belongsTo(DS.Model.extend())
  }));
  return dummyRecord._relationships.dummy.constructor;
};

export default {
  name: 'monkey-patch',
  after: 'store',
  initialize: function(container, application) {
    var store = container.lookup('store:main'),
      BelongsToRelationship = getBelongsToConstructor(store),
      originalAssert = Ember.assert,
      originalAddRecord = BelongsToRelationship.prototype.addRecord;

    //Overriding assert in order to check Ember.disableAssert flag
    Ember.assert = function() {
      var args = Array.prototype.slice.call(arguments, 0),
        retVal;
      if (!Ember.disableAssert) {
        retVal = originalAssert.apply(this, args);
      }
      return retVal;
    };

    //Overriding BelongsToRelationship - calling super while asserion is disabled
    BelongsToRelationship.prototype.addRecord = function() {
      var args = Array.prototype.slice.call(arguments, 0),
        retVal;
      Ember.disableAssert = true;
      retVal = originalAddRecord.apply(this, args);
      Ember.disableAssert = false;
      return retVal;
    };
  }
};

猴子修补Ember数据（使用ember-cli时）

1 个答案: