如何确保对象数组仅包含一个带有 Joi 的特定键?

How can I ensure that an array of objects contains only one of a particular key with Joi?

我有类似的东西:

  let moduleId

  moduleRackOutputs.forEach((output) => {
    if (!moduleId) {
      moduleId = output.moduleId
    } else if (output.moduleId !== moduleId) {
      errors.add([
        'The drawing contains more than one module type. Multiple module types are not yet supported by the PVsyst RPA.'
      ])
    }
  })

我想将其转换为 Joi 模式。我将如何做到这一点?

谢谢

您可以使用 Joi.array 方法并只向它传递您希望对象具有的一个键

const schema = Joi.object({
    arrayObjects: Joi.array().items(
      Joi
      .object()
      .keys(
        {keyElement:Joi.string()}
        )
     )
});

这可以通过以下方式完成:

Joi.array()
    .items(
        Joi.object().keys({
            moduleId: Joi.string().required(),
            framingType: Joi.string().required()
        })
    )
    .unique((a, b) => a.moduleId !== b.moduleId)
    .message({
        'array.unique': 'The drawing contains more than one module type...'
    })
    .unique((a, b) => a.framingType !== b.framingType)
    .message({
        'array.unique': 'The drawing contains more than one framing type...'
    })