Data::InputMonster - consume data from multiple sources, best first; om nom nom!
version 0.010
This module lets you describe a bunch of input fields you expect. For each field, you can specify validation, a default, and multiple places to look for a value. The first valid value found is accepted and returned in the results.
my $monster = Data::InputMonster->new({
fields => {
field_name => \%field_spec,
...
},
});
This builds a new monster. For more information on the %field_spec parameters, see below.
my $result = $monster->consume($input, \%arg);
This method processes the given input and returns a hashref of the finally accepted values. $input can be anything; it is up to the field definitions to expect and handle the data you plan to feed the monster.
Valid arguments are:
no_default_for - a field name or arrayref of field names for which to NOT
fall back to default values
Each field is defined by a hashref with the following entries:
sources - an arrayref of sources; see below; required filter - a coderef to preprocess candidate values check - a coderef to validate candidate values store - a coderef to store accepted values default - a value to use if no source provides an acceptable value
Sources may be given in one of two formats:
[ source_name => $source, ... ] [ $source_1, $source_2, ... ]
In the second form, sources will be assigned unique names.
The source value is a coderef which, handed the $input argument to the consume method, returns a candidate value (or undef). It is also handed a hashref of relevant information, most importantly field_name.
A filter is a coderef that works by altering $_.
If given, check must be a coderef that inspects $_ and returns a true if the value is acceptable.
Store is called if a value is accepted. It is passed the monster and a hashref with the following entries:
value - the value accepted source - the name of the source from which the value was accepted input - the input given to the consume method field_name - the field name
If default is given, it must be a simple scalar (in which case that is the default) or a coderef that will be called to provide a default value as needed.
Ricardo SIGNES <rjbs@cpan.org>
This software is copyright (c) 2013 by Ricardo SIGNES.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
