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1
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from functools import wraps |
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2
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from typing import Type, Optional |
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3
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4
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from flask import request |
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5
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from pydantic import BaseModel, ValidationError |
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6
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7
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from app.context import context_property |
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8
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9
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10
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def _validate(payload: Optional[dict], model: Type[BaseModel]) -> Optional[BaseModel]: |
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if payload is None: |
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payload = {} |
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13
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14
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try: |
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15
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instance = model(**payload) |
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except ValidationError: |
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raise |
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18
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except: |
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instance = None |
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return instance |
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22
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23
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24
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def validate( |
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*, |
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path_params: Type[BaseModel] = None, |
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query_params: Type[BaseModel] = None, |
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json: Type[BaseModel] = None, |
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json_force_load: bool = False, |
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): |
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def decorator(fn): |
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@wraps(fn) |
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def wrapper(*args, **kwargs): |
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34
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if path_params: |
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payload = kwargs |
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36
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instance = _validate(payload, path_params) |
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37
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context_property.request_path_params = instance |
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38
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39
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if query_params: |
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40
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payload = request.args |
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41
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instance = _validate(payload, query_params) |
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context_property.request_query_params = instance |
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43
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44
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if json: |
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45
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if json_force_load: |
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payload = request.get_json(force=True) |
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47
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else: |
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48
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payload = request.json |
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49
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50
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if hasattr(payload, "to_dict"): |
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51
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payload = payload.to_dict() |
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52
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53
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instance = _validate(payload, json) |
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54
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context_property.request_json = instance |
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55
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56
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return fn(*args, **kwargs) |
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57
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58
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return wrapper |
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59
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60
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return decorator |
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61
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JoMingyu /
Flask-Large-Application-Example
