Zend Framework: Zend_Filter_Boolean Component Proposal

Proposed Component Name	Zend_Filter_Boolean
Developer Notes	http://framework.zend.com/wiki/display/ZFDEV/Zend_Filter_Boolean
Proposers	Thomas Weidner
Zend Liaison	TBD
Revision	1.0 - 12 April 2009: Initial Draft. (wiki revision: 8)

$filter = new Zend_Filter_Boolean();

$filtered = $filter->filter(false); // returns false
$filtered = $filter->filter(true); // returns true

$filtered = $filter->filter(0); // returns false
$filtered = $filter->filter(1); // returns true

$filtered = $filter->filter(-1); // returns false
$filtered = $filter->filter(200); // returns true

$filtered = $filter->filter('yes'); // returns true
$filtered = $filter->filter('no'); // returns false
$filtered = $filter->filter('YES'); // returns true

UC-02

Localized recognition, note that english is always recognised

$filter = new Zend_Filter_Boolean('de');

$filtered = $filter->filter('Ja'); // returns true
$filtered = $filter->filter('Nein'); // returns false

UC-03

Localized recognition by setting the locale afterwards

$filter = new Zend_Filter_Boolean();
$filter->setLocale('de');

$filtered = $filter->filter('Ja'); // returns true
$filtered = $filter->filter('Nein'); // returns false

9. Class Skeletons

class Zend_Filter_Boolean extends Zend_Filter_Interface {}
{
    /**
     * @param $locale string|Zend_Locale (Optional) Locale to use
     */
    public function __construct($locale = null)

    /**
     * @param $locale string|Zend_Locale (Optional) Locale to use
     * @return Zend_Filter_Boolean
     */
    public function setLocale($locale = null)

    /**
     * @return string
     */
    public function getLocale()

    /**
     * @param $value  mixed              Value to filter
     * @param $locale string|Zend_Locale (Optional) Locale to use
     * @return Zend_Filter_Boolean
     */
    public function filter($value, $locale = null)
  
}

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Zend_Filter_Boolean - Thomas Weidner

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Zend Framework: Zend_Filter_Boolean Component Proposal

Table of Contents

1. Overview

2. References

3. Component Requirements, Constraints, and Acceptance Criteria

4. Dependencies on Other Framework Components

5. Theory of Operation

6. Milestones / Tasks

7. Class Index

8. Use Cases

9. Class Skeletons