带对象的环回模型 [英] loopback model with object

问题描述

晚上好

我只是从环回开始(从字面上看)，所以我去了文档中解释的命令:

I just started with loopback (literally), so I went for the commands explained in the documentation:

使用以下命令启动回送项目:

Started the loopback project with the command:

slc loopback

使用环回模型生成器通过以下命令生成模型:

Generated a model with the loopback model generator with the command:

slc loopback:model

当生成器启动时，它会询问模型名称，存储方法，基类，复数形式，是我们希望将其作为通用模型还是服务器模型.之后，它询问模型的属性.

When the generator starts, it asks for model name, storing method, base class, plural, whether we want it to be a common model or a server model. After that it asks for the properties of the model.

我有一个像这样的模型:

I have a model that could be like this:

MODEL NAME
Property1 : String,
Property2 : String,
Property3 : Number,
Property4 : {
            obj.Property1 : String,
            obj.Property2 : String,
            obj.Property3 : String
            },
Property5 : String

我认为，通过选择对象"作为属性类型，它会询问我该对象的其他属性，但事实并非如此.现在，我不知道如何创建该模型对象内部的其他属性.

I thought that by choosing "Object" as the type of property it would ask me for additional properties on that object, but it didn't. Now I have no idea how to create those additional properties that are inside the object of this model.

我将如何创建嵌套在Property4 Object内部的属性?我是否从loopback:model生成器中丢失了某些内容?

How would I go about creating the properties that are nested inside the Property4 Object? Am I missing something from the loopback:model generator?

推荐答案

好吧slc loopback:model不能这样做.您只需要在properties对象中的生成的json文件中指定自己(可能在common/models/目录中):

Well slc loopback:model doesn't do that. You just have to specify yourself in the generated json file(possibly in common/models/ directory) in the properties object:

"properties": {
  ...
  "Property4": {
    "type": {
      "Property1" : "String",
      "Property2" : "String",
      "Property3" : "String"
    }
  },
  ...
}

如果您需要任何属性，可以这样:

If you want any of the properties to be required you can do it like this:

"properties": {
  ...
  "Property4": {
    "type": {
      "Property1" : {
        "type": "String"
        "required": true
      },
      "Property2" : "String",
      "Property3" : "String"
    }
  },
  ...
}

如果对象没有"type"属性，则可以执行以下操作:

If the object doesn't have a "type" property, you can just do this:

"properties": {
  ...
  "Property4": {
    "Property1" : "String",
    "Property2" : "String",
    "Property3" : "String"
  },
  ...
}

您还可以将此定义放入另一个模型中，并在此处引用:

You can also put this definition into a another model and reference that here:

"properties": {
  ...
  "Property4": "AnotherModel",
  ...
}

我建议您通读属性"本文档的第二部分以及对象类型"本文档的一部分.

这篇关于带对象的环回模型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！