Sending variables to subs

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

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Re: Sending variables to subs by rattusillegitimus (Friar) on Jun 29, 2002 at 03:56 UTC
Try `&inerror('we couldnt find ' . param('home') . ' please check path');` [download]	[reply] [d/l]
Re: Sending variables to subs by cLive ;-) (Prior) on Jun 29, 2002 at 04:55 UTC
Another useful thing to know is that you can dump the contents of param() into a hash ref using: `my $param = Vars();` [download] then `$param->{'home'}` [download] would interpolate as you expect .02 cLive ;-) -- seek(JOB,$$LA,0);	[reply] [d/l] [select]
Re: Sending variables to subs by amphiplex (Monk) on Jun 29, 2002 at 10:44 UTC
Another way to easily access form parameters when using CGI.pm is to use import_names. For example: `.... use CGI; my $q = new CGI; $q->import_names('Q'); .... inerror("we couldn't find $Q::home, please check path");` [download] From "perldoc CGI": IMPORTING ALL PARAMETERS INTO A NAMESPACE: $query->import_names('R'); This creates a series of variables in the 'R' namespace. For example, $R::foo, @R:foo. For keyword lists, a vari able @R::keywords will appear. If no namespace is given, this method will assume 'Q'. WARNING: don't import any thing into 'main'; this is a major security risk!!!! In older versions, this method was called import(). As of version 2.20, this name has been removed completely to avoid conflict with the built-in Perl module import opera tor. [download] ----- kurt	[reply] [d/l] [select]
Re: Sending variables to subs by thunders (Priest) on Jun 29, 2002 at 03:58 UTC
you can use the concat operator, `&inerror("we couldnt find ".param('home')." please check path");` [download] with the commas it is seen as three arguements	[reply] [d/l]
Re: Sending variables to subs by krisahoch (Deacon) on Jun 29, 2002 at 06:19 UTC
AM, I am not entirely sure what it is you are doing, but it looks like you are using CGI. If so try something like this.. `use strict; use diagnostics; use CGI; #Create an instance of the object my $CGI_object = new CGI; # Set a new varible for easier manipulation. my $HOME = undef; $HOME = $CGI_object->param('home'); # if $HOME is not defined ==[ (!($HOME)) ]== OR ==[ \|\| ]== # if $HOME is not a directory ==[ (!($HOME)) ] ==, then # do the inerror thing. if( (!($HOME)) \|\| (!(-d $HOME)) ) { &inerror("We couldn't find '$HOME' in the path."); }` [download] If that is not what you are trying to do, then please ignore this post. Hope this helps. Kristofer	[reply] [d/l]


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