Views的补充

views的补充
请求头一般与请求内容用/r/n/r/n隔开
请求头包含的内容
request.Meta(...) 一般在下面几种方法里面取不到的东西需要去原生的头里面去取，比如用户的终端类型
    request.method
	request.path_info
	request.COOKIES
request.body
	request.POST
	request.FILES
	request.GET
	request.xxxx.getlist
	
	
return HttpResponse(a)可以返回字符串，也可以返回字节
return render
return redirect

设置cookies、设置响应头
response = HttpResponse(a)
response['name']='zq'
response.set_cookie()
return response

Response Headers【
HTTP/1.0 200 OK
Date: Sun, 06 May 2018 03:17:32 GMT
Server: WSGIServer/0.1 Python/2.7.10
X-Frame-Options: SAMEORIGIN
Content-Type: text/html; charset=utf-8
name: zq
Content-Length: 505】

Model操作（也可以使用原生的sql语句）
表内容操作
	models.tb.objects.create()
	models.tb.objects.create(**{字典})
	obj = models.tb()
	obj.save()
	models.tb.objects.all()[1:10]
	models.tb.objects.all()
	models.tb.objects.update()
	models.tb.objects.filter(id__in = [1,2,3])
	models.tb.objects.filter(单下划线id)
	models.tb.objects.filter(...).delete
	models.tb.objects.values
	models.tb.objects.values_list
	models.tb.objects.get
	models.tb.objects.filter().update
	models.tb.objects.filter().first()
	models.tb.objects.filter(字典)
	models.tb.objects.filter(...).count()
	models.tb.objects.filter(双下划线跨表)
	models.tb.objects.filter(id__gt = 1)
	models.tb.objects.filter(id__range = [1,5])
	models.tb.objects.filter(id__lt = 5)
	models.tb.objects.filter(id__lte = 5)
	models.tb.objects.filter(id__gte = 5,name='root')
	models.tb.objects.exclude(id__gte = 5)#不等于
	
	多对多：
		obj.set
		obj.add(1,2,3)
		obj.add([1,2,3])
		obj.remove([1,2,3])
		obj.clear([1,2,3])
		obj.all()
		models.tb.objects.all().order_by('')
		models.tb.objects.distinct()
		
	
	class A:
	    name
		b__set 反向查找B表的数据
		
	class B
	    caption
		fk = ForignKey(A)views的补充
请求头一般与请求内容用/r/n/r/n隔开
请求头包含的内容
request.Meta(...) 一般在下面几种方法里面取不到的东西需要去原生的头里面去取，比如用户的终端类型
    request.method
	request.path_info
	request.COOKIES
request.body
	request.POST
	request.FILES
	request.GET
	request.xxxx.getlist
	
	
return HttpResponse(a)可以返回字符串，也可以返回字节
return render
return redirect

设置cookies、设置响应头
response = HttpResponse(a)
response['name']='zq'
response.set_cookie()
return response

Response Headers【
HTTP/1.0 200 OK
Date: Sun, 06 May 2018 03:17:32 GMT
Server: WSGIServer/0.1 Python/2.7.10
X-Frame-Options: SAMEORIGIN
Content-Type: text/html; charset=utf-8
name: zq
Content-Length: 505】

Model操作（也可以使用原生的sql语句）
表内容操作
	models.tb.objects.create()
	models.tb.objects.create(**{字典})
	obj = models.tb()
	obj.save()
	models.tb.objects.all()[1:10]
	models.tb.objects.all()
	models.tb.objects.update()
	models.tb.objects.filter(id__in = [1,2,3])
	models.tb.objects.filter(单下划线id)
	models.tb.objects.filter(...).delete
	models.tb.objects.values
	models.tb.objects.values_list
	models.tb.objects.get
	models.tb.objects.filter().update
	models.tb.objects.filter().first()
	models.tb.objects.filter(字典)
	models.tb.objects.filter(...).count()
	models.tb.objects.filter(双下划线跨表)
	models.tb.objects.filter(id__gt = 1)
	models.tb.objects.filter(id__range = [1,5])
	models.tb.objects.filter(id__lt = 5)
	models.tb.objects.filter(id__lte = 5)
	models.tb.objects.filter(id__gte = 5,name='root')
	models.tb.objects.exclude(id__gte = 5)#不等于
	
	多对多：
		obj.set
		obj.add(1,2,3)
		obj.add([1,2,3])
		obj.remove([1,2,3])
		obj.clear([1,2,3])
		obj.all()
		models.tb.objects.all().order_by('')
		models.tb.objects.distinct()
		
	
	class A:
	    name
		b__set 反向查找B表的数据
		
	class B
	    caption
		fk = ForignKey(A)