and i even tried :
items =[]
items.append(request.args(0))
items.append('Both')
db( (db.table.Field1 == value) & (db.table.Field2 in items))
regards,
On Wed, Nov 7, 2012 at 12:56 PM, hasan alnator
<[email protected]>wrote:
> Dear Joe ,
>
> What i want to do is to have a query like this :
>
> db( (db.table.Field1 == value) & (db.table.Field2 == value or value))
>
> i tried it i get no errors but its now working
>
> Regards
>
>
> On Wed, Nov 7, 2012 at 10:10 AM, Joe Barnhart <[email protected]>wrote:
>
>> I see -- you're right.
>>
>> The request.args structure is a List() object which web2py defines to
>> retrieve values without the exception if it doesn't exist. It has some
>> additional interesting capabilities... You can define a default value,
>> such as this:
>>
>>
>> request.args(0,default='Both')
>>
>>
>> This will substitute the value 'Both' for request.args[0] should it be
>> set to None or be invalid. Or you could cast a string value to an integer
>> -- this often happens since the request.args are strings by default, but I
>> often pass row ids to be processed elsewhere:
>>
>>
>> URL('default','editrecord',args=[22])
>>
>>
>> Becomes:
>>
>>
>> http://...../default/editrecord/22
>>
>>
>> And request.args[0] is now '22' (the string). So we use the "cast"
>> keyword to change it to an int:
>>
>>
>> request.args(0,cast=int)
>>
>>
>> There is a ton of behavior in this little class! Thanks for pointing it
>> out to me.
>>
>> -- Joe Barnhart
>>
>>
>> class List(list):
>> """
>> Like a regular python list but a[i] if i is out of bounds return None
>> instead of IndexOutOfBounds
>> """
>>
>> def __call__(self, i, default=None, cast=None, otherwise=None):
>> """
>> request.args(0,default=0,cast=int,otherwise='http://error_url')
>> request.args(0,default=0,cast=int,otherwise=lambda:...)
>> """
>> n = len(self)
>> if 0 <= i < n or -n <= i < 0:
>> value = self[i]
>> else:
>> value = default
>> if cast:
>> try:
>> value = cast(value)
>> except (ValueError, TypeError):
>> from http import HTTP, redirect
>> if otherwise is None:
>> raise HTTP(404)
>> elif isinstance(otherwise, str):
>> redirect(otherwise)
>> elif callable(otherwise):
>> return otherwise()
>> else:
>> raise RuntimeError("invalid otherwise")
>> return value
>>
>>
>>
>>
>> On Tuesday, November 6, 2012 2:24:53 PM UTC-8, Niphlod wrote:
>>>
>>>
>>> One more point -- your "request.args(1)" should be "request.args[1]"
>>>> (with square brackets). The first form calls request.args as a function
>>>> and passes it the value "1". The second form treats request.args as a
>>>> Storage object and asks for the subscript "1".
>>>>
>>>> -- Joe Barnhart
>>>>
>>>> Nope, request.args(1) does basically
>>> try:
>>> result = request.args[1]
>>> except:
>>> result = None
>>> return result
>>>
>>> the () notation is safer because using request.args[1] if there is no
>>> request.args[1] you get an exception.
>>>
>> --
>>
>>
>>
>>
>
>
--
