Meteor Autoform `this.field("keyName").value` returns undefined in Schema

Question

我有一个 Person，我希望在有人更改他们的 firstName 或 lastName 字段时自动创建一个 fullName 字段和值。

People.attachSchema(new SimpleSchema({
    firstName: {
        type: String,
        optional: false,
        label: 'First Name'
    },
    lastName: {
        type: String,
        optional: false,
        label: 'Last Name'
    },
    fullName: {
        type: String,
        optional: false,
        label: 'Full Name',
        autoValue: function() {
          var firstName = this.field("firstName");
          var lastName = this.field("lastName");

          if(firstName.isSet || lastName.isSet){
                return firstName.value + " " + lastName.value;
            } else {
                this.unset();
            }
          }
    }
}));

如果我那么做

People.update("ZqvBYDmrkMGgueihX", {$set: {firstName: "Bill"}})

fullName设置为Bill undefined

我做错了什么？

Answer 1

现在，您的条件 firstName.isSet || lastName.isSet 表示，如果 firstName 或 lastName 之一在文档中可用，则创建 fullName。因此它正确地分配了全名，因为其中一个已设置（名字设置为 Bill）。您需要像这样使用 && 而不是 ||。

People.attachSchema(new SimpleSchema({
    firstName: {
        type: String,
        optional: false,
        label: 'First Name'
    },
    lastName: {
        type: String,
        optional: false,
        label: 'Last Name'
    },
    fullName: {
        type: String,
        optional: false,
        label: 'Full Name',
        autoValue: function() {
            var firstName = this.field("firstName");
            var lastName = this.field("lastName");

            if(firstName.isSet && lastName.isSet){
                return firstName.value + " " + lastName.value;
            } else {
                this.unset();
            }
        }
    }
}));

但是，根据你的问题，我认为，你想设置 fullName 只有当 firstName 或 lastName 之一更新时，我想（我不确定)，需要检查this.field('firstName').operator，检查当前操作是否为$set

Meteor Autoform `this.field("keyName").value` returns undefined in Schema

Meteor Autoform `this.field("keyName").value` returns undefined in Schema

meteor

meteor-autoform

meteor-collection2

simple-schema