In Rails (it's more of a Ruby question though ), I have:
def before_update
聽聽@var = get_old_var_value
end
and if get_old_var_value returns a false value it causes the update to
cancel. Is there some function that'll return true after setting the
var? Something like, oh I dunno, set_var(:var, get_old_var_value).
Rails' write_attribute also seems to return the value of the var (so
false causes problems with it too). I know I can just simply do this:
def before_update
聽聽@var = get_old_var_value
聽聽true
end
But I'm just curious if there are other approaches.
def before_update @var = get_old_var_value || true
end
This returns get_old_var_value if it's not false (or nil) or true
otherwise. Is that what you need?
Farrel
路路路
On 27/10/06, Joe Ruby MUDCRAP-CE <joeat303@yahoo.com> wrote:
In Rails (it's more of a Ruby question though ), I have:
def before_update @var = get_old_var_value
end
and if get_old_var_value returns a false value it causes the update to
cancel. Is there some function that'll return true after setting the
var? Something like, oh I dunno, set_var(:var, get_old_var_value).
Rails' write_attribute also seems to return the value of the var (so
false causes problems with it too). I know I can just simply do this:
def before_update @var = get_old_var_value
true
end
But I'm just curious if there are other approaches.
Whoops there's a syntax error in my solution. You want
(@var = get_old_var_value) || true
otherwise you risk setting @var to true when get_old_var is false.
Farrel
路路路
On 27/10/06, Farrel Lifson <farrel.lifson@gmail.com> wrote:
On 27/10/06, Joe Ruby MUDCRAP-CE <joeat303@yahoo.com> wrote:
> In Rails (it's more of a Ruby question though ), I have:
>
> def before_update
> @var = get_old_var_value
> end
>
> and if get_old_var_value returns a false value it causes the update to
> cancel. Is there some function that'll return true after setting the
> var? Something like, oh I dunno, set_var(:var, get_old_var_value).
> Rails' write_attribute also seems to return the value of the var (so
> false causes problems with it too). I know I can just simply do this:
>
> def before_update
> @var = get_old_var_value
> true
> end
>
> But I'm just curious if there are other approaches.
>
> Thanks,
> Joe
>
> --
> Posted via http://www.ruby-forum.com/\.
def before_update @var = get_old_var_value || true
end
This returns get_old_var_value if it's not false (or nil) or true
otherwise. Is that what you need?