Gravity forms date function/hook to limit date span on validation WordPress

Josh Cranwell comments:

Form 4
Input 39

Thanks

Kyle comments:

Try this

add_filter("gform_field_validation_4_39", "validate_date", 10, 4);
function validate_date($result, $value, $form, $field){

$input_string = strtotime( $value );

$max_date = strtotime("28 July 2013");
$min_date = strtotime("18 March 2013");

if ($input_string < $min_date OR $input_string > $max_date )
{
$result["is_valid"] = false;
$result["message"] = "Sorry, your invoice date is invalid.";
}
return $result;
}

Kyle comments:

I did not test that and may need to run some tests on how my $input_string is working, let me know if it works.

Josh Cranwell comments:

Going to test now thanks

Kyle comments:

Okay so that worked well for me, let me know if you run into any troubles implementing that

Josh Cranwell comments:

OK, I have tested and it returns strange results.

This is my form settings... http://i.imgur.com/0o7xrzW.png

Using these dates...


$max_date = strtotime("28 July 2013");
$min_date = strtotime("18 March 2013");


These are my entrie tests...

1. <strong>18/04/2013</strong> = this should validate, but it does not?

http://i.imgur.com/6p5giJR.png


2. <strong>4/04/2013</strong> = this should validate, and it does.

http://i.imgur.com/MRlWV71.png


3. <strong>19/03/2013</strong> = this should validate, but it does not?

http://i.imgur.com/xGTaFB3.png


Can you help?

Thanks
Josh

Kyle comments:

The problem is with my $input_string var, one second let me adjust

Josh Cranwell comments:

THanks

Kyle comments:

Okay so the issue is dd/mm/yyyy is pretty much the only date format that php strtotime doesn't understand haha (works with mm/dd/yyyy)

http://www.php.net/manual/en/datetime.formats.date.php

Do you need it to be in that format? I could write something that converts yours if you need to

Josh Cranwell comments:

What about just a string replace?

$invoice_date = str_replace("/", "-", $value );
$input_string = strtotime( $invoice_date );

[[LINK href="http://www.php.net/manual/en/datetime.formats.date.php"]]http://www.php.net/manual/en/datetime.formats.date.php[[/LINK]]

Also, by the way, my form is an ajax form - how does this work on an ajax form?

Thanks

Kyle comments:

Should work fine in ajax. str_replace may have worked, I had already started working on the solution before you answered :)

This should work with your format:

add_filter("gform_field_validation_4_39", "validate_date", 10, 4);
function validate_date($result, $value, $form, $field){

$ex_val = explode ("/",$value);
$new_val = $ex_val[1].'/'.$ex_val[0].'/'.$ex_val[2];

$input_string = strtotime( $new_val );
$max_date = strtotime("28 July 2013");
$min_date = strtotime("18 March 2013");

if ($input_string < $min_date OR $input_string > $max_date )
{
$result["is_valid"] = false;
$result["message"] = "Sorry, your invoice date is invalid.";
}
return $result;
}

Josh Cranwell comments:

I've tested my str_replace adjustment, and it seems to be OK - would you recommend this be OK, what did you have in mind?

Josh Cranwell comments:

Ahhh I see what you have done. Very nice.

Cool. Well I think it works fine. I will add your extra prize money now. If I have any problems I will let you know.


Thanks you very much for your help.

Josh

Kyle comments:

Sounds good, yes either one results in same string so its up to you. Feel free to pm me if you need to. You're welcome