使用Django开发简单接口实现文章增删改查

pip install django

django-admin.py startproject blog_demo

python3.6 manage.py runserver 9000

python3.6 manage.py startapp blog_api

class User(models.Model):
  id = models.AutoField(primary_key=True)
  uname = models.CharField(max_length=50)
  upwd = models.CharField(max_length=100)
  #active inactive
  status = models.CharField(max_length=10)

class Article(models.Model):
  id = models.AutoField(primary_key=True)
  title = models.CharField(max_length=50)
  content = models.TextField()
  #deleted alive
  status = models.CharField(max_length=10)

python3.6 manage.py migrate

INSTALLED_APPS = [
  'django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  'blog_api'
]

python3.6 manage.py makemigrations blog_api

python3.6 manage.py migrate

stephen@stephen-K55VD:~/IdeaProjects/blog_demo$ python3.6 manage.py createsuperuser 
Username (leave blank to use 'stephen'): admin
Email address: 
Password: 
Password (again): 
This password is too common.
Bypass password validation and create user anyway? [y/N]: y
Superuser created successfully.

#导入模型User,Article
from blog_api.models import User,Article

admin.site.register(User)
admin.site.register(Article)

from blog_api.views import add_article,modify_article
urlpatterns = [
  path('admin/', admin.site.urls),
  path('articles/',add_article),
  path('articles/<int:art_id>',modify_article)
]

from django.http import HttpResponse,JsonResponse
from blog_api.models import User,Article
import json

#新增文章
def add_article(request):
  if request.method == "POST":
    req = json.loads(request.body)
    print (req)
    key_flag = req.get("title") and req.get("content") and len(req)==2
    #判断请求体是否正确
    if key_flag:
      title = req["title"]
      content = req["content"]
      #title返回的是一个list
      title_exist = Article.objects.filter(title=title)
      #判断是否存在同名title
      if len(title_exist) != 0:
        return JsonResponse({"status":"BS.400","msg":"title aleady exist,fail to publish."})

      '''插入数据'''
      add_art = Article(title=title,content=content,status="alive")
      add_art.save()
      return JsonResponse({"status":"BS.200","msg":"publish article sucess."})
    else:
      return JsonResponse({"status":"BS.400","message":"please check param."})

#查询所有文章和状态
  if request.method == "GET":
    articles = {}
    query_art = Article.objects.all()
    for title in query_art:
      articles[title.title] = title.status
    return JsonResponse({"status":"BS.200","all_titles":articles,"msg":"query articles sucess."})

#修改文章
def modify_article(request,art_id):
  if request.method == "POST":
    req = json.loads(request.body)
    try:
      art = Article.objects.get(id=art_id)
      key_flag = req.get("title") and req.get("content") and len(req)==2
      if key_flag:
        title = req["title"]
        content = req["content"]
        title_exist = Article.objects.filter(title=title)
        if len(title_exist) > 1:
          return JsonResponse({"status":"BS.400","msg":"title aleady exist."})
        '''更新数据'''
        old_art = Article.objects.get(id=art_id)
        old_art.title = title
        old_art.content = content
        old_art.save()
        return JsonResponse({"status":"BS.200","msg":"modify article sucess."})
    except Article.DoesNotExist:
      return JsonResponse({"status":"BS.300","msg":"article is not exists,fail to modify."})

#删除文章
  if request.method == "DELETE":
    try:
      art = Article.objects.get(id=art_id)
      art_id = art.id
      art.delete()
      return JsonResponse({"status":"BS.200","msg":"delete article sucess."})
    except Article.DoesNotExist:
      return JsonResponse({"status":"BS.300","msg":"article is not exists,fail to delete."})

 path("auth/",get_token)

import hashlib

#获取token
def get_token(request):
  req = json.loads(request.body)
  uname = req["username"]
  upwd = req["password"]
  if request.method == "POST":
    try:
      tmppwd =User.objects.get(uname=uname).upwd
      if upwd == tmppwd:
        md5 = hashlib.md5()
        #把密码变成一个长度固定的字符串
        md5.update(upwd.encode("utf-8"))
        return JsonResponse({"status":"BS.201","X-Token":md5.hexdigest()})
      else:
        return JsonResponse({"status":"BS.401","msg":"username or password may wrong."})

    except User.DoesNotExist:
      return JsonResponse({"status":"BS.500","msg":"username is not exist."})

#认证动作
def user_auth(request):

  token = request.META.get("HTTP_X_TOKEN",b'')
  print (token)
  if token:
    #暂时先写上auth接口返回的数据
    if token=="0a6db4e59c7fff2b2b94a297e2e5632e":
      return "auth_sucess"
    else:
      return "auth_fail"
  else:
    return "auth_fail"

#新增文章
def add_article(request):
  auth_res = user_auth(request)
  if auth_res == "auth_fail":
    return JsonResponse({"status":"BS.401","msg":"user auth failed."})
  else:
    if request.method == "POST":
      req = json.loads(request.body)
      print (req)
      .......