CGI::MxScreen::Action_Env - Action callback error context
# Not meant to be created directly sub action { # an action callback my $env = pop @_; # the Action_Env error context my @args = @_; return CGI_MX_OK if $env->error_count; ... return CGI_MX_OK; }
Instances of this class are used to record failed actions during the processing of button callbacks. They are given as the last parameter of each action callback, and must therefore be retrieved with:
my $env = pop @_;
This object can be queried for the error_count (to avoid any further action processing if an error was detected, for instance), or for the full error_list, wich tracks a list of
error_count
error_list
[$object, $routine, [args]]
Those are the callbacks that were called and which returned an error condition (see CGI::MxScreen::Error for a list of allowed returned values).
This object is also passed as last argument to dynamic error trapping callbacks, so that a proper screen destination can be derived from the errors, if needed.
See CGI::MxScreen::Form::Button for more information on action callback and dynamic error trapping.
The original authors are Raphael Manfredi <Raphael_Manfredi@pobox.com> and Christophe Dehaudt <Christophe.Dehaudt@teamlog.fr>.
Send bug reports, suggestions, problems or questions to Jason Purdy <Jason@Purdy.INFO>
CGI::MxScreen::Error(3), CGI::MxScreen::Form::Button(3).
To install CGI::MxScreen, copy and paste the appropriate command in to your terminal.
cpanm
cpanm CGI::MxScreen
CPAN shell
perl -MCPAN -e shell install CGI::MxScreen
For more information on module installation, please visit the detailed CPAN module installation guide.