Django 다중 검색 & 필요한 열만 찾기 (필요한 열을 얻는query set) & 다운로드

def get_query_all(dic=None,values=None):
    res = oneModel.objects.filter(**dic).values(*values)
    return res

obj = get_query_all(dic, header)
buf = BytesIO()     # from io import BytesIO
import openpyxl
appeal_wb = openpyxl.Workbook(encoding='utf-8',write_only=True)
ws = appeal_wb.create_sheet()
ws.append(list(header_dic.values()))
for row in obj:
    ws.append(list(row.values()))
appeal_wb.save(buf)
file = buf.getvalue()
response = HttpResponse(content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment;filename=' + 'RebatePool' + '.xls'
response.write(file)
return response

con = Q()
q1 = Q()
q1.connector = 'OR'
q1.children.append(('id', 1))  #       
q1.children.append(('id', 2))
q1.children.append(('id', 3))
q2 = Q()
q2.connector = 'OR'
q2.children.append(('name', 'xiaoming'))
con.add(q1, 'AND')
con.add(q2, 'AND')
models.Tb1.objects.filter(con).orderby('id')

def get_query_all(dic=None, values=None, limit=None):
    '''dic:    ,   (year=2017,year=2018) OR,      AND  (year month)
    values      (           )
    limit:(skip,skip+limit)'''
    con = Q()
    if dic:
        for k,v in dic.items():
            q1 = Q()
            q1.connector = 'OR'
            if v:
                for item in v:
                    q1.children.append(item)
            con.add(q1, 'AND')
    if limit:
        res = RebatePoolModel.objects.filter(~Q() & con).order_by('-extra__    ')[limit[0]:limit[1]].values(*values)
    else:
        res = RebatePoolModel.objects.filter(~Q() & con).order_by('-extra__    ').values(*values)
    return res