django-$.get()和$.post()用法示例

$.get()

1、见：django-使用jquery完成ajax，实例-选择省市区

2、

.html

<script type="text/javascript">
    $(function(){
        $('.num_show').blur(function(){
            count=parseInt($(this).val());
            cart_id=$(this).parents('.cart_list_td').attr('id'); //获取当前商品的id
            $.get('/cart/edit'+cart_id+'_'+count+'/',function(data){
                if(data.count==0){   //修改成功，计算总价
                    total()
                }
                else{    //修改失败,改为原来的值
                    $(this).val(data.count)
                }
            });
        }); 
    })
</script>    

urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$',views.user_cart),
    url(r'^edit(\d+)_(\d+)/$',views.edit),
]

views.py

def edit(request,cart_id,count):
    try:
        cart=CartInfo.objects.get(pk=int(cart_id))
        cart.count=int(count)
        cart.save()
        count=0
    except Exception:
        count=count
    return JsonResponse({'count':count})

 

$.post()

.html

<script type="text/javascript">
    $('#order_btn').click(function() {
        //获取所有id，拼接成字符串
        cartids=''
        $('.goods_list_td').each(function(){
            cartids+=$(this).attr('id')+','
        });
        cartids=cartids.substring(0,cartids.length-1);  //去掉最后一个逗号
        total={{ total_trans_price }};
        data={
            'cart_ids':cartids,
            'total':total,
            'csrfmiddlewaretoken':'{{ csrf_token }}'   //对于ajax提交数据，把下面的代码加入到js的头部，可以保证ajax执行时自动提交参数csrfmiddlewaretoken
        };
        //alert(data.csrfmiddlewaretoken)

        //先发请求
        $.post('/order/push/',data,function(data1){
            if(data1.ok==1){
                localStorage.setItem('order_finish',2);

                $('.popup_con').fadeIn('fast', function(){
                    setTimeout(function(){
                        $('.popup_con').fadeOut('fast',function(){
                            location.href = "{% url 'user:order' 1 %}";
                            //alert('订单提交成功')
                        });
                    },1000)
                });
            }
            else {
                alert('订单提交失败')
            }
        })
    });
</script>

urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$',views.order),
    url(r'^push/$',views.order_handle),
]

views.py

def order_handle(requset):
    tran_id=transaction.savepoint()   # 创建保存点/保存事务发生点
    cart_ids=requset.POST.get('cart_ids')   # 用户提交的订单购物车，此时cart_ids为字符串，例如'1,2,3,'
    user_id=requset.session['user_id']   # 获取当前用户的id
    data1={}
    try:
        order_info=OrderInfo()    # 创建一个订单对象
        now=datetime.now()
        order_info.oid='%s%d'%(now.strftime('%Y%m%d%H%M%S'),user_id)   # 订单号为订单提交时间和用户id的拼接
        order_info.odate=now   # 订单时间
        order_info.user_id=int(user_id)   # 订单的用户id
        order_info.ototal=Decimal(requset.POST.get('total'))   # 从前端获取的订单总价
        order_info.save()   # 保存订单

        for cart_id in cart_ids.split(','):    # 逐个对用户提交订单中的每类商品即每一个小购物车
            cart=CartInfo.objects.get(pk=cart_id)    # 从CartInfo表中获取小购物车对象
            order_detail=OrderDetailInfo()   # 大订单中的每一个小商品订单
            order_detail.order=order_info   # 外键关联，小订单与大订单绑定
            goods=cart.goods   # 具体商品
            if cart.count<goods.gkucun:   # 判断库存是否满足订单，如果满足，修改数据库
                goods.gkucun-=cart.count
                goods.save()
                order_detail.goods=goods
                order_detail.price=goods.gprice
                order_detail.count=cart.count
                order_detail.save()
                cart.delete()   # 并删除当前购物车
            else:    # 否则，则事务回滚，订单取消
                transaction.savepoint_rollback(tran_id)   #回滚到保存点
                return HttpResponse('库存不足')
        data1['ok']=1
        transaction.savepoint_commit(tran_id)   #提交从保存点到当前状态的所有数据库事务操作
    except Exception as e:
        print(e)
        print('未完成订单提交')
        transaction.savepoint_rollback(tran_id)  # 事务任何一个环节出错，则事务全部取消
    return JsonResponse(data1)