Meteor使用namedContext将addInvalidKeys添加到AutoForm表单返回错误

Question

我有以下SimpleSchema，我试图添加自定义验证以验证输入重复的客户名称，但每当我尝试保存新客户时，我收到错误：

提供调用'adminCheckNewCustomerName'结果的异常：TypeError：无法读取null的'namedContext'属性

有人可以请告诉我我在做错了什么/在这里缺少来验证客户名称是否有重复记录？ 谢谢

schema.js：

AdminSection.schemas.customer = new SimpleSchema({
    CustomerName: {
        type: String,
        label: "Customer Name",
        unique: true,
        custom: function() {
            if (Meteor.isClient && this.isSet) {
                Meteor.call("adminCheckNewCustomerName", this.value, function(error, result) {
                    if (result) {
                        Customer.simpleSchema().namedContext("newCustomerForm").addInvalidKeys([{
                            name: "CustomerName",
                            type: "notUnique"
                        }]);
                    }
                });
            }
        }
    }
});

UI.registerHelper('AdminSchemas', function() {
    return AdminSection.schemas;
});

form.html：

{{#autoForm id="newCustomerForm" schema=AdminSchemas.customer validation="submit" type="method" meteormethod="adminNewCustomer"}}
   {{>afQuickField name="CustomerName"}}
   <button type="submit" class="btn btn-primary">Save Customer</button>
{{/autoForm}}

collections.js：

this.Customer = new Mongo.Collection("customers");

Answer 1

检查collection2代码以获取附加到集合的模式：

_.each([Mongo.Collection, LocalCollection], function (obj) {
  obj.prototype.simpleSchema = function () {
    var self = this;
    return self._c2 ? self._c2._simpleSchema : null;
  };
});

这个神秘的谐音_c2 （编程中的两个难题之一......）来自attachSchema ：

self._c2 = self._c2 || {};
//After having merged the schema with the previous one if necessary
self._c2._simpleSchema = ss;

这意味着您忘记了attachSchema或摆弄了收藏品的属性。

要解决：

Customer.attachSchema(AdminSchemas.customer);
//Also unless this collection stores only one customer its variable name should be plural