Interpreting a posted field value for use in a document

Hi guys,

I've been searching through the forum posts and small snippets here and there somewhat guide me to my goal. However, I'm still not there. I hope (one of) you can give me the remaining piece of info to complete my task.

Situation
People filling out my form have to select a radiobutton in order to choose "Yes" or "No". The value selected is translated by using "show values" to 1 (for yes) or 0 (for no). I need this translation, because our automated CSV-import can only interpret a boolean value.

So far so good. The challenge starts when I want to represent the choice in a resulting (PDF) document in a nice "human" way.

Proposed solution
I've added a second field, which is hidden to the public. Using a "hook" I've included a piece of code to the functions.php;

add_filter('gform_field_value_newsletter', 'my_custom_population_function');

function my_custom_population_function($value){
	global $post;
	$newsletter = get_post_meta($post->ID,'Receive_newsletter');
	$value='would like';
	if($newsletter == '0')
	{
		$value='would not like';
	}
    	return $newsletter;
}

The idea is to take the resulting fieldcode of newsletter and integrate it into a sentence, like;

"I would like to receive a newsletter", or
"I would not like to receive a newsletter"

Discussion
My approach is faulty. I'm trying to set a value based upon a post value, that hasn't been posted yet (right?). Processing of this value can easily take place after post. However, I don't know where to put the code and what code to include.

Hope my question makes sense? I really like GF and the possibilities seem endless. Unfortunately I sometimes get lost searching for the proper way to proceed.

Thanks,
Nick

Thanks for your reply, Chris.

I understand where you are getting at. The order of PDF- and CSV-creation is important. I've been investigating the code and noticed that CSV's are created first. After CSV creation I might be able to interpret the value of the $_POST into a "human text". If I set this value back to the original $_POST it should be integrated correctly. For this I will need to edit the gravity-pdf.php file.

Thanks for pointing out the route. I will follow and report back the result.

Nick