How to enumerate the forms in cf7? - php

Question

I'm a newbie to web designing. I'm using contact form 7 to create a registration form for our conference.
All I wanted to do is, I need to give a unique id for all of them after they have registered for the conference and the further forms should be identified using this unique id.
So far, I have installed contact form 7 and contact form dtx
for this purpose and I have tried Koen de Bakker solution of generating a random number.
But it's slightly different from what I want, since it changes the random number for each refresh.
What I'd like is:
An unique number like "17ICLAA001,..." should be generated for each form submission.
Send the unique number to the applicant after successive submission of the form.(I hope this can be easily done once the shortcode is done).
Editing the form using the unique id.
Any help will be much appreciated. Thank you.

Answer 1

I have found a way to do this. Its just the number of rows+1 in the table.
When you add a record to your table the unique number also gets increased by 1 in the following code. Add the following function in function.php in your theme and use the short code "row_count" to call the function. Use it with dynamichidden text from dtx.
function row_count_shortcode() {
global $wpdb;
$user_count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->username_wp1.SaveContactForm7_1" )+1;
return "17ICLAA".sprintf('%03d',$user_count);
}
add_shortcode( 'row_count', 'row_count_shortcode' );
Usually when you are creating contact forms using contact form7 it automatically creates a table in your database something like
username_wp1.SaveContactForm7_1
Instead of this replace your database table name.
So in your contact form, type
[dynamichidden uniqueid "row_count"]
and use [uniqueid] in your email body to serve your purpose.
It works fine. I have checked in my site.

Answer 2

Correct way to generate a unique and progressive number is to set a field in wp_option like this:
add_option('unique_number', '1');
When filter is called, you must simply increment this unique number:
function genTicketString() {
$currentUniqueNumber = get_option('unique_number');
$newCurrentUniqueNumber = $currentUniqueNumber + 1;
update_option('unique_number' $newCurrentUniqueNumber );
return $newCurrentUniqueNumber;
}
add_shortcode('quoteticket', 'genTicketString');