javascript - 如何在 Meteor 的自定义验证简单模式中检查布尔值是否为真

Question

我有以下架构：

Games.attachSchema(new SimpleSchema({
    title: {
        type: String,
        label: "Title",
        max: 30
    },
    multiplayer: {
        type: Boolean,
        label: "Multiplayer",
        denyUpdate: true
    },
    description: {
        type: String,
        label: "Description",
        custom: function() {
            var multiplayer = this.field("multiplayer");
            if (multiplayer.isSet && multiplayer.value && !this.isSet) return "Description is empty!";
            return true;
        }
    }
}));

我的目标是检查是否description为空，但前提是复选框multiplayer已被选中。如果未选中复选框，则description不应强制填写。

我尝试了上面的代码，但它没有验证。即使我没有描述并且我选中了复选框，我也可以提交表单。

Answer 1

我认为问题出在您的验证逻辑上。尝试将其更改为：

if (multiplayer.isSet && multiplayer.value && this.isSet && this.value == "")
return "Description is empty!";

Answer 2

我找到了正确的文档并像这样解决了它：

{
  description: {
    type: String,
    optional: true,
    custom: function () {
      var shouldBeRequired = this.field('multiplayer').value;

      if (shouldBeRequired) {
        // inserts
        if (!this.operator) {
          if (!this.isSet || this.value === null || this.value === "") return "required";
        }

        // updates
        else if (this.isSet) {
          if (this.operator === "$set" && this.value === null || this.value === "") return "required";
          if (this.operator === "$unset") return "required";
          if (this.operator === "$rename") return "required";
        }
      }
    }
  }
}