Output form result after form_submit

Question

I have custom module, where after form_submit, i do some calculations, and get result of those calculations in a variable.

After i hit "submit", i can output those calculations with drupal_set_message , but i would like to format results (array), and print it bellow the submit button. How can i output resulting variable bellow the form or in the form, after submission ?

function mymodule_form_submit($form, &$form_state) {

$a=$b+$c;

// on submit, i would like to print/format $a on the reloaded form page

}

Thanks!

Answer 1

What you want to do is use something like $form_state['temporary'] in your myMod_submit function. Set $form_state['temporary'] = $someValue and rebuild your form. You also want your myMod_form function to have a place holder for your data. When the form is loaded, simply check to see if your temp holder is populated. if it is then you know you have a result and display it.

See code below.

function myMod_form($form, &$form_state) {

    ...

    if(!empty($form_state['temporary'])) {
        $form['results'] = array(
            '#type'     => 'item',
            '#markup'   => $form_state['temporary'], 
        );
    }

    return $form;
}

function myMod_submit($form_id, &$form_state) {
     ...

     $results = callSomeFunctionToGetResults();

     $form_state['temporary']   = $results;
     $form_state['rebuild']     = TRUE;

     ...
 }

i omitted all my code that would populated $results but this should get you to where you need to go.

quick addition here.

I just realized that you wanted it to go to another page and not the same page. I believe in your myMod_submit function you can use drupal_goto(). pass it a url and also pass it some options. you can then parse out the options as your values in the other page. See drupal_goto. however, i haven't tested this option out.

Answer 2

If its a node form you can add an extra form submit handler to get the values Printed if not you probably have a submit function try print_r

As its a form submit you should try exit OR die

function my_module_my_form_submit($form, &$form_state) {
    //drupal_set_message(t('The form has been submitted.'));
    //drupal_set_message('<pre>'.print_r($form_state, 1).'</pre>');
    print_r($form_state, 1);
    die('Check the die !');
}

Basic form with submit handler

How do I add an additional submit handler

Answer 3

A simple solution to access variables outside the function in other function is to make the scope of the variable as global.

function mymodule_form_submit($form, &$form_state) {
  global $a;
  $a=$b+$c;    
}

And on submit, in other function you can access this variable by something like:

function some_page_load_function() {
  global $a;
  //print/format $a according to requirement.
}

I've written the function name to be some_page_load_function, as I'm not sure about the function you're wishing to access the value; as you also mentioned that this module might be a part of admin region.