On Tue, Sep 29, 2009 at 09:03:51AM +0100, Chris Wood wrote:
> I'm new to using SQLObject,
Welcome!
> and having some problems with getting it
> to recognise my current MySQL database.
Making SQLObject to work with existing databases could be problematic,
sometimes even impossible; let's hope it's not your case.
> class Table1(sqlobject.SQLObject):
> _connection = conn
> _fromDatabase = True
>
> class sqlmeta:
> table = 'Table1'
> idName = 'Table1ID'
>
> BOB = StringCol()
You don't need both _fromDatabase and columns. Either you use
_fromDatabase and allow SQLObject to get the list of columns from the
backend, or you declare your columns yourself.
> I've seen the attribute in class sqlmeta of 'columns' - will this find
> my column names automatically,
Yes, if _fromDatabase = True.
> or do I still need to input them
> manually? If the latter..:
Yes, if _fromDatabase = False.
> I assume I set the names of each column in the instance of sqlmeta
> (like I have done with the table name) - how do I do this?! Do I do
> this before or after I've told SQLObject that the BOB column is a
> String column?
SQLObject processes your class declaration as a whole so it doesn't
matter (if I understand your question correctly).
class Table1(sqlobject.SQLObject):
_connection = conn
class sqlmeta:
table = 'Table1'
idName = 'Table1ID'
BOB = StringCol()
is the same as
class Table1(sqlobject.SQLObject):
class sqlmeta:
table = 'Table1'
idName = 'Table1ID'
_connection = conn
BOB = StringCol()
is the same as
class Table1(sqlobject.SQLObject):
_connection = conn
BOB = StringCol()
class sqlmeta:
table = 'Table1'
idName = 'Table1ID'
(See - I didn't use _fromDatabase and SQLObject assumes it's False and
expects you to provide a list of columns)
> Is there a published list of the default naming convention that
> SQLObject follows? I couldn't find it on the website.
SQLObject uses "style" to convert names between Python and backend. See
styles.py for existing styles. Default style is MixedCaseUnderscoreStyle but
you can change it for a class (table), a group of classes or the entire
program.
If you don't want to override the entire style but only want to change a
few names (of if your existing DB doesn't follow any style at all) - you
can set the names for the table and the columns:
class Table1(sqlobject.SQLObject):
class sqlmeta:
table = 'Table1'
idName = 'Table1ID'
_connection = conn
BOB = StringCol(dbName='strbob')
Oleg.
--
Oleg Broytman http://phd.pp.ru/ p...@phd.pp.ru
Programmers don't die, they just GOSUB without RETURN.
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