Support leading zeroes for the number field

[sc0ttkclark]

Description

This PR adds support for the number field having leading zeroes even after formatting.

via feedback at https://wordpress.org/support/topic/leading-zero-in-number-field-3/

Testing instructions

TBD

Screenshots / screencast

TBD

Changelog text for these changes

TBD

PR checklist

• I have tested my own code to confirm it works as I intended.
• My code follows the WordPress Coding Standards.
• My code follows the WordPress Inline Documentation Standards.
• My code includes automated tests for PHP and/or JS (if applicable).

[JoryHogeveen]

Would be a nice addition, however the naming could be more general as we did with the currency field.

What do you think? Or do you consider the number field a totally different case?

[JoryHogeveen]

Would it be nice to set the maximum allowed leading zero's?
Or even a minimum amount of digits (excluding decimals)?

[sc0ttkclark]

We could probably put more time into this to figure out how many zeroes to limit to or if padding should be done as well.

[reedtsutton]

Would it be nice to set the maximum allowed leading zero's? Or even a minimum amount of digits (excluding decimals)?

Is it possible to just make it so the zeros can be entered? User can enter 0123 or 00123 and it displays as entered?

[JoryHogeveen]

@sc0ttkclark @reedtsutton Just an idea for a first solution.
An option to disable formatting all together and allow all numeric type formats with a simple regex?

So basically, within the "_format" selectbox we add an option "none" or "any" witch disabled all formats but only runs the value through a regex that filters out everything except for decimals (if enabled).

[reedtsutton]

Hey guys any update on this one?

[reedtsutton]

Hey guys wondering if there is going to be any movement on this?

[sc0ttkclark]

We just need to sort out exactly what we want from this enhancement. I'll look at this in the upcoming release when I can.

[reedtsutton]

There is actually a separate (but probably related?) issue where an entry of 0 in the currency field is being treated to be a null value (see screenshots #1 and #2).

This compounds when I try to pass the value to another post type, and the resulting field ends up being blank (screenshots #3 and #4).

Screenshot 1

Screenshot 2

Screenshot 3

Screenshot 4