JSON Schema依赖性:枚举内容取决于从另一个枚举中选择 [英] JSON Schema dependencies: enum content depends on choice from another enum

问题描述

我有一个enum，带有第一组选项，第二个enum的内容取决于在第一个enum中所做的选择.

I have an enum with a first set of choices, and a second enum whose content depends on the choice made in the first enum.

这是我目前拥有的一个简单示例(不正确):

Here's a simple example of what I have at present (not right):

"fontGroup": {
    "title": "Font Group",
    "type": "string",
    "enum": [
        "Roboto",
        "Noto",
        "Alegreya"
    ],
    "default": "Roboto"
},
"fontFamily": {
    "title": "Font Family",
    "type": "string",
    "enum": [
        "Roboto Slab",
        "Roboto Condensed",
        "---",
        "Noto Sans",
        "Noto Serif",
        "---",
        "Alegreya SC",
        "Alegreya Sans"
    ],
    "default": "Roboto Slab"
}

当然，如果从第一个enum中选择了Noto，则只有第二个enum中与Noto相关的选择才有效.例如，与Roboto Condensed一起选择Noto是无效的.

Of course, if Noto is selected from the first enum then only the Noto related choices in the second enum are valid. It is invalid to select Noto in combination with Roboto Condensed, for example.

如何在模式中指定它?

推荐答案

您不能引用draft-07及以下版本的相对属性，但可以枚举所有可能的对象变体:

You can not refer to a relative property as of draft-07 and below, but you can enumerate all possible object variations:

{
  "type": "object",
  "oneOf": [
    {
      "properties": {
        "fontGroup": {
          "const": "Roboto"
        },
        "fontFamily": {
          "enum": [
            "Roboto Slab",
            "Roboto Condenced"
          ]
        }
      }
    },
    {
      "properties": {
        "fontGroup": {
          "const": "Noto"
        },
        "fontFamily": {
          "enum": [
            "Noto Sans",
            "Noto Serif"
          ]
        }
      }
    },
    {
      "properties": {
        "fontGroup": {
          "const": "Alegreya"
        },
        "fontFamily": {
          "enum": [
            "Alegreya SC",
            "Alegreya Sans"
          ]
        }
      }
    }
  ]
}

const关键字在draft-04中不可用，您可以将其更改为单值枚举:"enum":["Roboto"].

const keyword is not available in draft-04, you can change it to single-value enum: "enum":["Roboto"].

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