前言

Django在开发管理系统的过程中，给客户用的前台配合hAdmin很快就搞好了。默认后台平时自己用，也没那么多讲究。这次要给别人用。就需要考虑权限，还有一些样式啥的。需要花点心思美化一下。

过程

限制后台的一些功能,记录只能由前端上传，禁止后台编辑和修改。加载自定义js，通过js提交数据

admin.py

编辑项目目录下的admin.py

class FundRecordAdmin(admin.ModelAdmin):
    #后台展示字段
    list_display = ['id', 'show_card_transid', 'show_card_number', 'record_type', 'amount', 'currency', 'pos_amount', 'pos_currency', 'status', 'auth_at', 'operate']

    readonly_fields = [field.name for field in FundRecord._meta.fields]

    #搜索字段
    search_fields=['card__card_number', 'card__card_transid']

    #禁用删除
    def has_delete_permission(self, request, obj=None):
        return False

    #禁止后台新增
    def has_add_permission(self, request):
        return False

    #卡片标识
    @admin.display(description='transid', ordering='id')
    def show_card_transid(self, obj):
        return obj.card.card_transid

    #卡号
    @admin.display(description='卡号', ordering='id')
    def show_card_number(self, obj):
        return obj.card.card_number

    # 定义一些操作示例
    @admin.display(description='操作', ordering='id')
    def operate(self, obj):
        if obj.status == 0:
            #拒绝按钮
            raras = "'{}','{}'".format(obj.id, '2')
            refuse_btn = "<button onclick='javascript:fundrecordmanage({r_a})'  class='el-button el-button--danger el-button--small'>拒绝</button>"

            #通过
            aaras = "'{}','{}'".format(obj.id, '1')
            allow_btn = "<button onclick='javascript:fundrecordmanage({a_a})'  class='el-button el-button--success el-button--small'>通过</button>"

            html_str = "<div>" + allow_btn + refuse_btn +"</div>"
            return format_html(html_str, r_a=raras, a_a=aaras)
        else:
            return ""

    class Media:
          js = ('js/fundrecord.js',)

#注册
admin.site.register(FundRecord, FundRecordAdmin)

fundrecord.js

调用js，给自定义按钮。然后通过接口传递数据。

//卡片额度处理函数
//fundrecordmanage函数传入申请aid和sta两个参数
//fid 申请ID
//sta 1已完成,2未通过
function fundrecordmanage(fid, sta){
    var url = "/record/fundman/?fid="+fid+"&sta="+sta;
    var Http = new XMLHttpRequest();
    Http.open("GET", url, false);
    Http.send(null);
    //console.log(Http.responseText);
}

view.py

定义供js使用的接口。包括给卡片充值，提现。接口只允许管理员使用，验证登录。采用事物保证数据的一致性。用messages提示。

@user_passes_test(lambda u: u.is_superuser)
@login_required
@transaction.atomic
def fundrecord_manage(request):
    """
    卡片额度变更处理函数
    """
    app_id = request.GET.get('fid')
    status = request.GET.get('sta')

    fundrecord = FundRecord.objects.filter(id=app_id,status=0).first()
    if fundrecord:
        if status == '1':
            #卡片充值
            if fundrecord.record_type == 1:
                try:
                    with transaction.atomic():
                        #修改记录状态
                        fundrecord.status = int(status)
                        fundrecord.save()

                        fundrecord.card.limit_amount += fundrecord.amount
                        fundrecord.card.remaining_amount += fundrecord.amount
                        fundrecord.card.note=""
                        fundrecord.card.save()

                        #通知
                        messages.success(request, '通过')
                except Exception as e:
                    logger.debug(e)
            #卡片提现
            elif fundrecord.record_type == 3:
                try:
                    with transaction.atomic():
                        #修改记录状态
                        fundrecord.status = int(status)
                        fundrecord.save()

                        #卡片说明
                        fundrecord.card.note=""
                        fundrecord.card.save()

                        #账号余额变动
                        # 创建一条退款记录，将预扣款返回账号
                        balance_record_a = BalanceRecord.objects.create(
                            owner=fundrecord.card.owner,
                            record_type=2,
                            amount=fundrecord.amount,
                            status=1,
                        )

                        fundrecord.card.owner.userprofile.usd_amount += fundrecord.amount
                        fundrecord.card.owner.userprofile.save()

                        #扣除提现手续费
                        service_fee = fundrecord.amount*Decimal(0.01)
                        if service_fee < 1:
                            service_fee = Decimal(1)

                        #扣除手续费
                        balance_record_b = BalanceRecord.objects.create(
                            owner=fundrecord.card.owner,
                            record_type=8,
                            amount=service_fee,
                            status=1,
                        )

                        #账号余额变动
                        balance_record_b.owner.userprofile.usd_amount -= service_fee
                        balance_record_b.owner.userprofile.save()

                        #通知
                        messages.success(request, '通过')
                except Exception as e:
                    logger.debug(e)
        elif status == '2':
            #卡片充值
            if fundrecord.record_type == 1:
                try:
                    with transaction.atomic():
                        # 创建一条退款记录，将预扣款返回账号
                        balance_record_a = BalanceRecord.objects.create(
                            owner=fundrecord.card.owner,
                            record_type=2,
                            amount=fundrecord.amount,
                            status=1,
                        )

                        fundrecord.card.owner.userprofile.usd_amount += fundrecord.amount
                        fundrecord.card.owner.userprofile.save()

                        #修改记录状态
                        fundrecord.status = int(status)
                        fundrecord.save()

                        #卡片说明
                        fundrecord.card.note=""
                        fundrecord.card.save()

                        #通知
                        messages.warning(request, '未通过')
                except Exception as e:
                    logger.debug(e)

            #卡片提现
            elif fundrecord.record_type == 3:
                 try:
                    with transaction.atomic():
                        #额度恢复
                        fundrecord.card.limit_amount += fundrecord.amount
                        fundrecord.card.remaining_amount += fundrecord.amount

                        #清理锁定
                        fundrecord.card.note=""
                        fundrecord.card.save()

                        #改变本条记录状态
                        fundrecord.status = int(status)
                        fundrecord.save()

                 except Exception as e:
                    logger.debug(e)


    return HttpResponse('ok')