On Jul 7, 2010, at 7:29 PM, Bruno Rocha wrote:
> Open a Python terminal, and try this example
>
>>>> d = {'id':1,'title':'web2py'}
>>>> d
> {'id': 1, 'title': 'web2py'}
>>>> "Title for id %(id)s is %(title)s " % d
> 'Title for id 1 is web2py '
Unfortunately, none of this explains how the label argument is used in
IS_IN_DB(), nor is it explained in the manual. And I find the code pretty
opaque.
How does the above relate to IS_IN_DB?
> 2010/7/7 Bruno Rocha <[email protected]>:
>> Take a look to the String Formating and String Interpolation in Python
>> Documentation
>>
>> http://docs.python.org/library/stdtypes.html#string-formatting-operations
>>
>> 2010/7/7 ra3don <[email protected]>:
>>> I apologize for a seemingly simple question, but what exactly does '%
>>> (title)s' do? I ran across it in the book in the wiki section, the
>>> whole line reads.
>>>
>>> db.document.page_id.requires = IS_IN_DB(db, 'page.id', '%(title)s')
>>>
>>> Thanks in advance,
>>>
>>> ra3don.
