在Django上生成checksumhash（Paytm Gateway）时出错

Question

我正在尝试将Djnago的PayTm网关集成为后端，但是我的程序在生成checksumhash时遇到错误。 以下是我的代码段：

models.py

from django.db import models
class TrxnDetail(models.Model):
    MID = models.CharField(max_length=20)
    ORDER_ID = models.CharField(max_length=50)
    CUST_ID = models.CharField(max_length=64)
    TXN_AMOUNT = models.CharField(max_length=10)
    CHANNEL_ID = models.CharField(max_length=3)
    WEBSITE = models.CharField(max_length=30)
    INDUSTRY_TYPE_ID = models.CharField(max_length=20)
    MOBILE_NO = models.CharField(max_length=15)
    EMAIL = models.CharField(max_length=50)

    def __str__(self):
        return self.ORDER_ID

views.py

from rest_framework import status
from rest_framework.decorators import api_view
from rest_framework.response import Response
from gateway.models import TrxnDetail
from gateway.serializers import TrxnSerializer
from gateway.Checksum import generate_checksum
from django.conf import settings


@api_view(['GET', 'POST'])
def snippet_list(request):
    """
    List all code snippets, or create a new snippet.
    """
    if request.method == 'GET':
        snippets = TrxnDetail.objects.all()
        serializer = TrxnSerializer(snippets, many=True)
        return Response(serializer.data)

    elif request.method == 'POST':
        serializer = TrxnSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            sdata=serializer.data

            mid,order_id,cust_id,
            txn_amount,channel_id,
            website,industry_type_id,
            mobile_no,email=sdata.get('MID'),sdata.get('ORDER_ID'),
            sdata.get('CUST_ID'),sdata.get('TXN_AMOUNT'),
            sdata.get('CHANNEL_ID'),sdata.get('WEBSITE'),
            sdata.get('INDUSTRY_TYPE_ID'),sdata.get('MOBILE_NO'),
            sdata.get('EMAIL'),
            param_dict = dict()
            param_dict['MID']=mid
            param_dict['ORDER_ID']=order_id
            param_dict['CUST_ID']=cust_id
            param_dict['TXN_AMOUNT']=txn_amount
            param_dict['CHANNEL_ID']=channel_id
            param_dict['WEBSITE']=website
            param_dict['INDUSTRY_TYPE_ID']=industry_type_id
            param_dict['MOBILE_NO']=mobile_no
            param_dict['EMAIL']=email
            print(generate_checksum(param_dict,settings.PAYTM_MERCHANT_KEY))
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors,status=status.HTTP_400_BAD_REQUEST)

我正在使用ModelSerializer和CheckSum.py

我遇到以下错误：Error Image

Answer 1

如果您使用的是python 3，请确保先安装pycryptodome。 Checksum文件中的编码和解码功能的AES.new（）函数需要utf-8编码参数。

用以下代码替换功能：

private function filterByRelationship($query, $keyword, $relativeTables)
{
    foreach ($relativeTables as $relationship => $relativeColumns) {
        $query->orWhereHas($relationship, function($relationQuery) use ($keyword, $relativeColumns) {
            foreach ($relativeColumns as $key => $column) {
                $clause = $key == 0 ? 'where' : 'orWhere';
                $relationQuery->$clause($column, "LIKE", "%$keyword%");
            }
        });
    }

    return $query;
}

我希望能帮上忙。