当我的 JSON 是这样的时，如何为我的 FastAPI 端点创建 Pydantic 模型？

如何解决当我的 JSON 是这样的时，如何为我的 FastAPI 端点创建 Pydantic 模型？

{
  'events': [
    {
      'type': 'message','replyToken': '0bc647fc5282423cde13fffbc947a8','source': {
        'userId': 'U996ed69353d3c962ee17b33d9af3e2','type': 'user'
      },'timestamp': 161185209914,'mode': 'active','message': {
        'type': 'text','id': '1346188304367','text': ' hello'
      }
    }
  ],'destination': 'Uf44eb3ba6c4b87adbfaa4a517e'
}

这是我正在使用的 webhook 中的 json 它是这样包含的，我该如何为它编写 Pytantic 模型？

解决方法

这应该适用于您上面给出的请求正文。

from pydantic import BaseModel
from typing import List

class Source(BaseModel):
    userId: str
    type: str


class Message(BaseModel):
    type: str
    id: str
    text: str


class Event(BaseModel):
    type: str
    replyToken: str
    source: Source
    timestamp: int
    mode: str
    message: Message


class Webhook(BaseModel):
    events: List[Event]
    destination: str

这是 Webhook 模型的 OpenAPI 架构。

{
  "title": "Webhook","type": "object","properties": {
    "events": {
      "title": "Events","type": "array","items": {
        "$ref": "#/definitions/Event"
      }
    },"destination": {
      "title": "Destination","type": "string"
    }
  },"required": [
    "events","destination"
  ],"definitions": {
    "Source": {
      "title": "Source","properties": {
        "userId": {
          "title": "Userid","type": "string"
        },"type": {
          "title": "Type","type": "string"
        }
      },"required": [
        "userId","type"
      ]
    },"Message": {
      "title": "Message","properties": {
        "type": {
          "title": "Type","id": {
          "title": "Id","text": {
          "title": "Text","required": [
        "type","id","text"
      ]
    },"Event": {
      "title": "Event","replyToken": {
          "title": "Replytoken","source": {
          "$ref": "#/definitions/Source"
        },"timestamp": {
          "title": "Timestamp","type": "integer"
        },"mode": {
          "title": "Mode","message": {
          "$ref": "#/definitions/Message"
        }
      },"replyToken","source","timestamp","mode","message"
      ]
    }
  }
}