Skip to content

Latest commit

 

History

History
102 lines (87 loc) · 3.08 KB

request_response.md

File metadata and controls

102 lines (87 loc) · 3.08 KB
Raw

HttpRequest objects

    request.POST.getlist('multi_select')  # 获取一个多选的select的数值
    request.method == "GET" | "POST"
    json.loads(request.read().encode(request.encoding))
    file = request.FILES['file']  # 获取文件, 里面的file是你在form里面设置的name
        name: 文件名 - portriat.png
        read(): 读取文件的二进制数据(内存占用很大)
        chunks(): 一个迭代器
        size: 文件字节数

  • 参数

    • path: /reqres/request/
    • GET: 返回GET的参数, ImmutableDict
    • body: 返回二进制内容
    • POST: 类似GET, 用于POST的方法
    • FILES: 获取文件 request.FILES.getlist("images") 获取上传的图表列表 django.core.files.uploadedfile.InMemoryUploadedFile
    • django.core.files.uploadedfile.InMemoryUploadedFile:
      • name: 返回文件名
      • read(): 返回二进制内容

  • 方法

    • get_full_path: /reqres/request/?key=bar

  • cookie: request.COOKIES

  • 其他

    • request.META['REMOTE_ADDR'] # 获取IP地址

QueryDict

django.http.request.QueryDict, 是一个MultiValueDict

query = QueryDict('a=1&a=2&b=3')
query['a'] == '2'
query.getlist('a') == ['1', '2']
query.getlist('c') == []
  • copy: 用来把request.POST的数据copy, 这样才能修改
  • get/getitem: 返回最后一个的值
  • getlist(key, default=None) 必定返回list或者default的值

response

参数

  • content
  • charset
  • status_code

JsonResponse

from django.http import JsonResponse
response = JsonResponse({"foo": "bar"})

返回文件 FileResponse

import io
return FileResponse(
    io.BytesIO(b'123'),
    headers={
        "Content-Disposition": 'attachment;filename="下载.csv"'.encode("utf8"),
    }
)
from django.http import FileResponse
response = FileResponse(open('filename', 'rb'))
response['Content-Disposition'] = 'attachment;filename="result.xlsx"'  # 告诉浏览器文件的文件名
response['Content-Length'] = tmp_file.tell()  # 告诉浏览器文件的大小
return response

返回csv

    from django.http import HttpResponse
    from import csv

    response = HttpResponse(content_type='text/csv')
    response['Content-Disposition'] = 'attachment; filename="somefilename.csv"'
    write = csv.write(response)
    write.writerow(['Firstrow', 'Foo', 'Bar', 'Baz'])
    write.writerow(['Second row', 'A', 'B', 'C', '"Testing"'])

设置cookie

a = HttpResponse('ok')
a.set_cookie('foo', value='bar')
return a

重定向(HttpResponseRedirect)

from django.http import HttpResponseRedirect
return HttpResponseRedirect('http://www.ramwin.com')

from django.views.generic.base import Redirectiew
path(".*$", Redirectiew.as_view(url="/home"), namespace="other")