Random chanracters in hidden field

Robert,

Here is what you need to do:

1- Add the hidden field to your form
a- Allow it to be populated dynamically (advanced tab)
b- Type "rand_number" in the "parameter name" text field

2- Add the following code snippet to your template's function.php file


add_filter("gform_field_value_rand_number", "populate_rand_number");
function populate_rand_number(){
return uniqid();
}


3- Configure The form's confirmation page
a- Select redirect
b- Enter the url to the thank you page
b- Check the "Pass field data via query stirng" checkbox
c- Build your query string by selecting the hidden field from the list of available variables

4- Configure notifications
a- Add the "All submitted fields" to the body of the admin notification to receive all fields via email
b- If you don't want the user to receive an email at all, just leave the subject and body blank for the user notification

Let us know if you have any problems.

Good Luck!

Robert, Alex responded in this thread above with instructions. His message begins with "Here is what you need to do:" and outlines what you need to do to populate a hidden field with data using the api hooks.

It involve adding a hidden field to your form, generating a random string, and then inserting the value of that random string into the hidden field. When the form is submitted, it includes a field that contains your random string.

Have you done this part yet?

I'm a little confused as to what you are using for a confirmation page. Are you using the built in confirmation page text and the form field variables, or are you redirecting to a page and passing the values in the query string?

If you are redirecting to a WordPress page and passing the values in a query string you will need to use PHP to pull in those values and display them. Once you redirect to another page it is outside Gravity Forms control so you need to use PHP to manipulate the data in the query string.

If you are using the built in text confirmation by entering your confirmation text in the form settings, the form field variables should work. If you are doing it this way, are you saying the form field variables for your hidden fields aren't working? If this is this case, have you verified that values exist for those hidden fields by viewing the Entry and checking to see that you are in fact storing the hidden field data?

Sascha,
To generate random numbers, replace:

return uniqid();


by:

return mt_rand();


That should give you numeric numbers instead. You can also control the minimum and maximum number generated by mt_rand() by passing them as parameters. For example: mt_rand(5,15) will generate random numbers between 5 and 15.
You can find more info on mt_rand() here:
http://www.php.net/manual/en/function.mt-rand.php

Good Luck.

Try using mt_rand() instead.
For example, mt_rand(5,15) will generate random numbers between 5 and 15. You can change the parameters to whatever numbers you need.

You can find more info on mt_rand() here:
http://www.php.net/manual/en/function.mt-rand.php

It looks like you will need to make a decision here. You won't be able to have a short and unique number, simply because there are so many combinations a short number will be able to support.
If you need the numbers to be unique and random, my suggestion is to use uniqid(). The number will be large, but that's the price you pay to have an unique number.