GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
Rose::HTML::Form::Field::DateTime::Split::MonthDayYear(3) User Contributed Perl Documentation Rose::HTML::Form::Field::DateTime::Split::MonthDayYear(3)

Rose::HTML::Form::Field::DateTime::Split::MonthDayYear - Compound field for dates with separate text fields for month, day, and year.

    $field =
      Rose::HTML::Form::Field::DateTime::Split::MonthDayYear->new(
        label   => 'Date',
        name    => 'date', 
        default => '12/31/2002');

    print $field->field('month')->internal_value; # "12"

    print $field->internal_value; # "2002-12-31T20:00:00"
    print $field->output_value;   # "2002-12-31 08:00:00 PM"

    $field->input_value('blah');

    # "Could not parse date: blah"
    $field->validate or warn $field->error;

    $field->input_value('4/30/1980');

    $dt = $field->internal_value; # DateTime object

    print $dt->hour;     # 17
    print $dt->day_name; # Wednesday

    print $field->html;
    ...

Rose::HTML::Form::Field::DateTime::Split::MonthDayYear a compound field for dates with separate text fields for month, day, and year.

This class inherits (indirectly) from both Rose::HTML::Form::Field::DateTime and Rose::HTML::Form::Field::Compound. This doesn't quite work out as expected without a bit of tweaking. We'd like inflate_value() and validate() methods to be inherited from Rose::HTML::Form::Field::DateTime, but everything else to be inherited from Rose::HTML::Form::Field::Compound.

To solve this problem, there's an intermediate class that imports the correct set of methods. This class then inherits from the intermediate class. This works, and isolates the tricky bits to a single intermediate class, but it also demonstrates the problems that can crop up when multiple inheritance is combined with a strong aversion to code duplication.

Inheritence shenanigans aside, this class is a good example of a compound field that also provides an "inflated" internal value (a DateTime object).

It is important that this class (indirectly) inherits from Rose::HTML::Form::Field::Compound. See the Rose::HTML::Form::Field::Compound documentation for more information.

date_parser [PARSER]
Get or set the date parser object. This object must include a "parse_datetime()" method that takes a single string as an argument and returns a DateTime object, or undef if parsing fails.

If the parser object has an "error()" method, it will be called to set the error message after a failed parsing attempt.

The parser object defaults to Rose::DateTime::Parser->new().

time_zone [TZ]
If the parser object has a time_zone() method, this method simply calls it, passing all arguments. Otherwise, undef is returned.

Other examples of custom fields:
Rose::HTML::Form::Field::Email
A text field that only accepts valid email addresses.
Rose::HTML::Form::Field::Time
Uses inflate/deflate to coerce input into a fixed format.
Rose::HTML::Form::Field::DateTime
Uses inflate/deflate to convert input to a DateTime object.
Rose::HTML::Form::Field::DateTime::Range
A compound field whose internal value consists of more than one object.
Rose::HTML::Form::Field::PhoneNumber::US::Split
A simple compound field that coalesces multiple subfields into a single value.
Rose::HTML::Form::Field::DateTime::Split::MDYHMS
A compound field that includes other compound fields and uses inflate/deflate convert input from multiple subfields into a DateTime object.

John C. Siracusa (siracusa@gmail.com)

Copyright (c) 2010 by John C. Siracusa. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
2015-03-17 perl v5.32.1

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.