Other options:
1)
db.table.field.represent=lambda row='row': ...
if field.represent.func_defaults[0]=='row': ...
2)
db.table.field.represent=lambda row={}: ...
if isinstance(field.represent.func_defaults[0],dict): ...
3)
if field.represent.func_code.co_varnames[0]=='row': ...
this is used in SQLTABLE, FIELD, crud.read, crud.update.
Massimo
On Dec 8, 11:58 pm, Bruno Rocha <[email protected]> wrote:
> I am overriding SQLTABLE class, here is my idea, let me know if this is a
> stupid idea :P
>
> I want to pass to SQLTABLE a represent_dictionary which I call 'rd', so if I
> have a table:
>
> <table>
> db.define_table('person',
> Field('name'),
> Field('city'),
> Field('state'),
> Field('email')
> )
> </table>
>
> My rd will be:
>
> <code>
> rd =
> dict(person.email={'repr_string':A(_href=URL('changemail',vars=dict(person_id='%s'))),
> 'fetch':'person.id'})
>
> # I want to pass rd to SQLTABLE
>
> <code>
> mytable = SQLTABLE(Rows,rd=rd)
> </code>
>
> Now in SQLTABLE for each column name, I will check if there is a entry for
> this key in 'rd', if True:
>
> <code>
> for i,row in enumerate(sqlrows):
> field.represent = rd[columnname]['repr_string'] % row[rd['fetch']]
> </code>
>
> This way, I can always pass a dict containing a string with placeholders to
> override the represent for any column in the table, and this dict will
> contains which column value will be fetched for every row.
>
> I am making some tests, I just need a way to include some html tags
> including another field values, as ID for every column.
>
> Is that a stupid idea? :P
>
> Thanks
>
> epresent: lambda row:
>
> 2010/12/9 mdipierro <[email protected]>
>
>
>
> > Sorry. Cannot be done this way. Represent takes the field value, not
> > the entire row.
> > The reason is that when web2py tries to represent a field in a
> > SQLTABLE or in a FORM, only that field is guaranteed to be there. the
> > other fields may not have been fetched from the database.
>
> > Anyway... I will think this can be improved.
> > Let us know if you have any idea.
>
> > Massimo
>
> > On Dec 8, 10:13 pm, Bruno Rocha <[email protected]> wrote:
> > > I Know this is an VERY OLD post, but I was searching the group and I
> > > now have the same need as weheh in this thread.
>
> > > db.define_table('person',
> > > Field('name'),
> > > Field('city'),
> > > Field('state'),
> > > Field('email',represent: lambda row:
> > > A(_href=URL('changemail',vars=dict(person_id=row.id))))
> > > )
>
> > > But, lambda in this case is getting row as str() with the mail adress
> > > stored in 'email' field, I need to have the row id.
>
> > > another easy way?
>
> > > I am thinking about override the SQLTABLE class to include this kind of
> > > option if I can't find an easy solution.
>
> --
>
> Bruno Rochahttp://about.me/rochacbruno/bio
