[1119 | Day62] drf of abnormal module

First, abnormal module

Rewriting module object is abnormal abnormality record information (on line item).

Second, concrete placement

分析：

1. EXCEPTION_HANDLER arranged in drf configuration settings, the function point custom exception_handler

2. drf abnormal, and will exception_handler callback function, carry the abnormal and unusual objects related content

3. In return exception_handler function complete exception message and exception information logging logs

例如：

#settings.py

REST_FRAMEWORK = {

    # 异常模块
    # 'EXCEPTION_HANDLER': 'rest_framework.views.exception_handler',
    
    'EXCEPTION_HANDLER': 'api.utils.exception_handler',
}

#api/utils.py（自定义模块）

from rest_framework.response import Response
from rest_framework.views import exception_handler as drf_exception_handler
from rest_framework import status


def exception_handler(exc, context):
    response = drf_exception_handler(exc, context)

    if response is None:  # drf没有处理的异常(服务器异常)
        return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR, data={
            'status': 7,
            'exc': '%s' % exc
        })

    # 项目阶段，要记录到日志文件
    return Response(status=response.status_code, data={
        'status': 7,
        # drf处理的客户端异常，原始处理方式是将异常信息放在response对象的data中，data的格式是{'datail': '具体的异常信息'}
        'exc': '%s' % response.data.get('detail')
    })

核心：

Logging exception information needs to be recorded, so you need to customize.

drf only deal with clients abnormalities, abnormal server requires manual handling, uniform processing results.