web2py的異常

Question

當我做下面的代碼：

family_members =db(db.member.id == membership_id).select 
(db.member.name,db.member.id) 
family_members.colnames = ('Name','Membership ID') 

這會導致以下錯誤......

Traceback (most recent call last): 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
restricted.py", line 184, in restricted 
    File "/home/abeer/Desktop/resources/web2py/New_version/web2py_src/ 
web2py/applications/init/views/default/updateMember.html", line 142, 
in <module> 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
globals.py", line 112, in write 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
html.py", line 103, in xmlescape 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
sql.py", line 3326, in xml 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
sqlhtml.py", line 980, in __init__ 
    File "/home/abeer/Desktop/web2py/New_version/web2py_src/web2py/gluon/ 
sql.py", line 621, in __getattr__ 
    KeyError: '_extra' 

附： ：當我評論線(family_members.colnames = ('Name','Membership ID'))，它工作正常，但我不明白爲什麼。

Answer 1

請勿使用colnames。該屬性是web2py的內部屬性。根據您的需要使用db.table.field.label='..'或SQLTABLE(rows, headers={...})。