django 数据库返回queryset实现封装为字典
默认情况下,Python DB API会返回不带字段的结果,这意味着你得到的是一个列表,而不是一个字典。花费一点性能代价之后,你可以返回一个字典形式的结果,像这样:
def dictfetchall(cursor):
"Returns all rows from a cursor as a dict"
desc = cursor.description
return [
dict(zip([col[0] for col in desc], row))
for row in cursor.fetchall()
]
demo:
from django.db import connection
if __name__ == '__main__':
"""db=db_operate()
sql='select DISTINCT t1.HostName,t2.IpAddress,t2.RegName,t2.AppUser,t2.`Desc` from machineinfo as t1,asset_appregioninfo as t2 where t1.IpAddress=t2.IpAddress;'
result=db.mysql_command(settings.conn, sql)
dic=dict(result)
print dic
"""
cur=connection.cursor()
cur.execute('select DISTINCT t1.HostName,t2.IpAddress,t2.RegName,t2.AppUser,t2.`Desc` from machineinfo as t1,asset_appregioninfo as t2 where t1.IpAddress=t2.IpAddress;')
dic=dictfetchall(cur)
print dic
这样在前台,就可以通过
{%for i in dic%}
{i.字段}
生成列表了
补充知识:[django] queryset系列化3种方式model_to_dict、serializers
我就废话不多说了,大家还是直接看代码吧!
# 序列化方式1:
from django.forms.models import model_to_dict
import json
data=[]
for obj in book_list:
data.append(model_to_dict(obj))
print(data)
return HttpResponse("ok")
# 序列化方式2:
data=serializers.serialize("json",book_list)
return HttpResponse(data)
# 序列化方式3:
bs=BookSerializers(book_list,many=True)
return Response(bs.data)
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