Django视图（views)

def add_publicer(request):
    if request.method==‘POST‘:
        new_name=request.POST.get(‘publicer_name‘,None)
        if new_name:
            models.Chubanshe.objects.create(name=new_name)
            return redirect("/publicer_list/")
        else:
            return HttpResponse(‘error!‘)
    return render(request,‘add_publicer2.html‘)

from django.views import View

class Addpublicer(View):
    def get(self,request):
        return render(request, ‘add_publicer2.html‘)
    def post(self,request):
        new_name = request.POST.get(‘publicer_name‘, None)
        if new_name:
            models.Chubanshe.objects.create(name=new_name)
            return redirect("/publicer_list/")
        else:
            return HttpResponse(‘error!‘)

 <form action="/upload/" method="post" enctype="multipart/form-data">
        <input type="file" name="upload_file">
        <input type="submit" value="开始上传">
 </form>

def upload(request):
    """
    保存上传文件前，数据需要存放在某个位置。默认当上传文件小于2.5M时，django会将上传文件的全部内容读进内存。从内存读取一次，写磁盘一次。
    但当上传文件很大时，django会把上传文件写到临时文件中，然后存放到系统临时文件夹中。
    :param request:
    :return:
    """
    if request.method == "POST":
        # 从请求的FILES中获取上传文件的文件名，file为页面上type=files类型input的name属性值
        filename = request.FILES["upload_file"].name
        # 在项目目录下新建一个文件
        with open(filename, "wb") as f:
            # 从上传的文件对象中一点一点读
            for chunk in request.FILES["upload_file"].chunks():
                # 写入本地文件
                f.write(chunk)
        return HttpResponse("上传OK")

def json_test(request):
    information={‘name‘:‘吴志远‘,‘age‘:23}
    #name=[‘Tom‘,‘Json‘,‘Meimei‘]
    from django.http import JsonResponse
    response = JsonResponse(information)
    #response = JsonResponse(name,safe=False)
    return HttpResponse(response)