django 數據庫返回queryset實現封裝為字典
默認情況下,Python DB API會返回不帶字段的結果,這意味著你得到的是一個列表,而不是一個字典。花費一點性能代價之后,你可以返回一個字典形式的結果,像這樣:
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 connectionif __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
這樣在前臺,就可以通過
{%for i in dic%}{i.字段}
生成列表了
補充知識:[django] queryset系列化3種方式model_to_dict、serializers
我就廢話不多說了,大家還是直接看代碼吧!
# 序列化方式1:from django.forms.models import model_to_dictimport jsondata=[]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)
以上這篇django 數據庫返回queryset實現封裝為字典就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持好吧啦網。
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