Re: Re: Calling OO-method From A Hash

Of course the truly paranoid will make sure that it's a valid method first.

my $method = $q->param( 'method' ); # ... or whatever
if( my $m = $obj->can( $method ) ) {
  $obj->$m( @params );
} else {
  die "I can't call $method on a ", ref $obj;
}
[download]

Comment on Re: Re: Calling OO-method From A Hash Download Code

Replies are listed 'Best First'.
Re: Re: Re: Calling OO-method From A Hash by tinita (Parson) on Mar 03, 2004 at 09:56 UTC
beware of method names like "main::unsafe" for example. can() will return \&main::unsafe and not undef. this is also addressed in perlsec.pod. better will be checking in a dispatch table in case $method comes from outside.	[reply]
A reply falls below the community's threshold of quality. You may see it by logging in.
Re^3: Calling OO-method From A Hash by Anonymous Monk on Mar 03, 2004 at 03:06 UTC
And the knowledgable would know that the extra code doesn't get you much, since calling an invalid method will die as it is...	[reply]
Re: Re^3: Calling OO-method From A Hash by Fletch (Bishop) on Mar 03, 2004 at 03:11 UTC
The more knowledgeable would realize the `die` was just an example and that they could replace it with code which gracefully handles the problem (perhaps redirecting to an error page, or listing the valid methods).	[reply] [d/l]
Re^5: Calling OO-method From A Hash by Anonymous Monk on Mar 03, 2004 at 03:14 UTC
The most knowledgeable would know that you are indeed correct and that I misspelled 'knowledgeable'. :)	[reply]