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How do I submit a single form from multiple forms on the same page.


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I am creating a user inbox system. I am retrieving all the unread messages. Each message row contains a "reply" form. So say I have 10 messages showing on a single page. That's 10 forms.

What I would like to know is how can I submit any one of the 10 forms and not have it affect the remaining 9 forms?

Here is the basic code.

if(isset($_POST['submit'])) {
  $post_message = trim($_POST['message']);

  $errors      =  array();
  $db->beginTransaction();

  if(empty($post_message)) {
    $errors[] = 'The message field can not be empty!';
  }

  if(empty($errors)) {
    $db->commit();
    
    echo 'success';

  } else {
    $db->rollBack();
  }
}
<form action="" method="post">
  <fieldset>
    <textarea name="message" maxlength="10000" placeholder="What would you like to say?"></textarea>
  </fieldset>
  <fieldset>
    <input type="submit" name="submit" value="Submit" />
  </fieldset>
</form>

 

As Kicken says.....

Just remember that any modifications you make to fields in form A will be lost if the user submits form B.  Those inputs (from the A form) will not be sent to the server as part of the submit normally.  Nor should they be.  

Of course - each of your multiple forms should have the very same field 'names' so that your logic will handle each form properly.

Got it. 

Here is the updated form. It seems to work fine.

// Message ID being an ID of individual message rows retrived from the DB.
$message_id

if(isset($_POST['submit']) AND $_POST['message-id'] == $message_id) {
  $post_message = trim($_POST['message']);

  $errors      =  array();
  $db->beginTransaction();

  if(empty($post_message)) {
    $errors[] = 'The message field can not be empty!';
  } else {
	// ADD CODE HERE
  }

  if(empty($errors)) {
    $db->commit();
    
    echo 'success';

  } else {
    $db->rollBack();
  }
}
<form action="" method="post">
  <fieldset>
    <textarea name="message" maxlength="10000" placeholder="What would you like to say?"></textarea>
  </fieldset>
  <fieldset>
    <input type="hidden" name="message-id" value="<?php echo $message_id; ?>" />
    <input type="submit" name="submit" value="Submit" />
  </fieldset>
</form>

 

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