set_radio and set_checkbox have problems with value of 0

[eluser]Unknown[/eluser]
I was reluctant to modify the core system.

But I was able to fix the bug by setting validation rules for my checkboxes.

For checkboxes that didn't require validation, I just set the rule to something inconsequential like (trim).

Hopefully this will save others the time that I lost.

[eluser]Iverson[/eluser]
[quote author="Jonas G" date="1256229124"]This is also an issue in 1.7.2[/quote]

+1. And it's pissing me off :coolmad:

[eluser]nomikos3[/eluser]
Yes, still buggy in 1.7.2.

But you must never patch the core system.

The only solution is set values as chars (not integers):

wrong:

Code:

set_radio('radio_1', 0)

cool:

Code:

set_radio('radio_1', '0')

So in the the first sample at the top, should be:

Code:

Radio Choice:
<input type="radio" name="radio_1" value="0" <?=set_radio('radio_1', '0') ?>/>Choice 1
&lt;input type="radio" name="radio_1" value="1" &lt;?=set_radio('radio_1', '1') ?&gt;/&gt;Choice 2<br /><br />

Checkbox:
&lt;input type="checkbox" name="check_1" value="0" &lt;?=set_checkbox('check_1', '0') ?&gt; /&gt;&lt;br /><br />

---

I know that is very painful typing quotes, but these kind of issues always occur in PHP, so you may take this tip as a rule.

o/\o

[eluser]dmstudios[/eluser]
WORKAROUND

I was able to fix the bug by setting validation rules for my checkboxes.

For checkboxes that didn’t require validation, I just set the rule to something inconsequential like (trim).

Thanks Dr. Crypto, that's a great and simple workaround rather than modifying or extending the core.

[eluser]kiranugur[/eluser]
[quote author="Dr Crypto" date="1259157052"]
For checkboxes that didn't require validation, I just set the rule to something inconsequential like (trim).

Hopefully this will save others the time that I lost.[/quote]

There is no need to set the rule to "trim" or smt else. Just leave it blank.

Code:

$this->form_validation->set_rules('category', 'Category', '');

This works fine for me.

[eluser]rip_pit[/eluser]
i still have the same problem and nothing here didn't worked while i'm using v2.+

I finally fixed it by downloading and using the latest update of the lib (v2.3)
and using it as an extension of the main system lib (class MY_Form_validation extend CI_Form_validation)

Code available at :
https://github.com/EllisLab/CodeIgniter/...dation.php

Seems now fine and accept '0' as value.
hope it can help

[eluser]sparky672[/eluser]
As of this posting, using the latest CI (version 2.1.4), and also have this problem.

Already using quotation marks as per a previous comment...

Code:

<input type="radio" name="active" value="1"  <?php echo set_radio('active', '1') ?> />
<input type="radio" name="active" value="0"  <?php echo set_radio('active', '0') ?> />

I'm a little surprised this bug has lingered for so many years.

-----

As a workaround, I have to create an empty rule...

Code:

$this->form_validation->set_rules('active', 'Status', '');

-----

I'm open to any suggestions for a workaround cleaner than an empty validation rule. Thank-you.

[eluser]CroNiX[/eluser]
Any of the form_helper functions that retrieve a form value need at least one validation rule set up. set_value(), set_select(), set_radio(), set_checkbox(), etc., or they can't get the value.

I don't know why you'd use an empty rule though. I'd at least make a callback function to see if that field was an int 0 or 1, or whatever allowable choices you have. If it goes in the database, it should be validated. What if I edited the form in my browser and sent "3" and that wasn't an allowable or valid choice? Your code would store it.

[eluser]sparky672[/eluser]
[quote author="CroNiX" date="1384386338"]Any of the form_helper functions that retrieve a form value need at least one validation rule set up. set_value(), set_select(), set_radio(), set_checkbox(), etc., or they can't get the value.[/quote]

Good to know. Thank-you. Up to this point, this thread was a bit misleading in that regard.

[quote author="CroNiX" date="1384386338"]I don't know why you'd use an empty rule though. I'd at least make a callback function to see if that field was an int 0 or 1, or whatever allowable choices you have. If it goes in the database, it should be validated. What if I edited the form in my browser and sent "3" and that wasn't an allowable or valid choice? Your code would store it.[/quote]

That's a very good point to note, especially for anyone else that may be reading this thread. However, in this case, only somebody logged in as "admin" has access to my form.