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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