Zend Framework: Zend_Filter_Null Component Proposal

Table of Contents

1. Overview

Zend_Filter_Null is a component which allows to accept empty values as NULL in case of a database useage.

2. References

[ZF-3808]

3. Component Requirements, Constraints, and Acceptance Criteria

• This component will change values to be NULL
• This component will allow to change which values should be changed

4. Dependencies on Other Framework Components

• Zend_Filter_Null

5. Theory of Operation

This component will filter input values to be null. This is needed for databases when a '0' or '' is not equal to NULL.
You can edit which inputs are changed to NULL. Per default the values '' (empty string), 0 (integer or string 0), and
false (boolean false) are changed to NULL.

The filtered value itself can then savely be stored in a database without any change.

6. Milestones / Tasks

• Milestone 1: [DONE] Proposal finished
• Milestone 2: [DONE] Proposal accepted
• Milestone 3: [DONE] Coding finished
• Milestone 4: [DONE] Unit tests finished
• Milestone 5: [DONE] Documentation finished
• Milestone 6: [DONE] Component moved to core

7. Class Index

• Zend_Filter_Null

8. Use Cases

9. Class Skeletons