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Django 带文件的表单上传

# Django 带文件的表单上传

## 带文件的表单上传

### 首先在表单 form 中必须要添加这个属性

    enctype="multipart/form-data"

然后在 js 中添加下列代码

    //选中需要上传的表单，并且进行格式化处理
    var formData=new FormData($("#formdata")[0]);
    console.log(formData)
    //获取用户名
    var user=document.getElementById("username").innerHTML;
    var date=new Date();
    var month=date.getMonth()+1;
    //把数据追加到表单
    formData.append("username",user);
    formData.append("date",date.getFullYear()+"-"+month+"-"+date.getDate());
    formData.append("sign",date.getTime());
    $.ajax({
        type:"post",
        url:"http://127.0.0.1:8000/tour/sendDay",
        async:true,
        data:formData,
        timeout:5000,
        dataType:"json",
        cache:false, //提交表单必须增加的属性
        contentType:false,
        processData:false,
        success:function(data){
            alert(data);
            console.log(data)
            if(data.code == "1") {
                alert("发布成功")
              }
              if(data.code == "2"){
                alert("发布失败")
            }
        },
        error:function(xhr,textState){
            alert("请求失败！")
        }
    });

### 在 models 中添加以下类

    class Tours(models.Model):
     username = models.CharField(max_length=20)
     date = models.CharField(max_length=20)
     times = models.CharField(max_length=100)
     desc = models.CharField(max_length=255)
     photoname = models.FileField(upload_to="photo",null=True,blank=True)
     musicname = models.FileField(upload_to="music",null=True,blank=True)
     isDelete = models.BooleanField(default=False)

### 在 settings.py 文件中添加如下代码

    MEDIA_URL = '/media/'
    MEDIA_ROOT = os.path.join(BASE_DIR,'media')

### 在 urls.py 文件中创建路由

    from django.views.static import serve

    from App import views
    from tourdemo import settings
    from tourdemo.settings import MEDIA_ROOT

    urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r"^tour/sendDay",views.tourSendDay),
     #加载media文件需要的路由
      url(r'^media/(?P<path>.*)/$', serve, {"document_root": MEDIA_ROOT}),

    ]

### 在 views.py 文件中添加 tourSendDay 函数

    def tourSendDay(request):
      try:
          tour = Tours()
          username = request.POST.get("username")
          tour.username = username
          date = request.POST.get("date")
          tour.date = date
          times = request.POST.get("sign")
          tour.times = times
          music = request.FILES.get("music")
          tour.musicname = music
          img = request.FILES.get("photo")
          tour.photoname = img
          desc = request.POST.get("desc")
          # print(desc)
          tour.desc = desc
          # print("desc",tour.desc)
          tour.save()
          tourdic = {"code":"1","id": tour.id, "photoname": tour.photoname.url, "musicname": tour.musicname.url, "times": tour.times,
                     "username": tour.username, "date": tour.date, "desc": tour.desc}

          response = HttpResponse(json.dumps(tourdic))
      except Exception as e:
          print(e)
          response = HttpResponse(json.dumps({"code": "2"}))

      response["Access-Control-Allow-Origin"] = "*"
      response["Access-Control-Allow-Methods"] = "POST, GET, OPTIONS"
      response["Access-Control-Max-Age"] = "1000"
      response["Access-Control-Allow-Headers"] = "*"
      return response

### 注意若出现存储中文失败则需要在创建的的时候指定编码格式

    create database tourdb charset='utf8';

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