Button Without An Input Form

[justlukeyou]

Hi,

 

I am trying to complete a button which inserts the ID number of the person logged in (followerid) against the ID of the profile page (profileid).

 

So the person logged in wants to follow the user of the profile they are viewing.

 

The code had a working inserts the ID as soon as the page is visited. However I am struggling to get it to work only when the button is pressed.

 

I have tried various vardump and prints but cant seem to get anything to work. Does anyone have any suggestions please?

 

 

<?php


$followerid = intval($_SESSION['userID']);
       $profileid  = intval($row['id']);


if(isset($_POST['followbutton']) && $_POST['followbutton'] == 'true'){


if($profileid =  $followerid) {
       $errors['profileid'] = "This is a test error.";
   }



if(!$errors){
       //Validation of input vars passed, attempt to run query
       //Force vars to be ints to be safe for query statement


	    $followerid = intval($_SESSION['userID']);
       $profileid  = intval($row['id']);

       $query = "INSERT INTO `follow` (`user_id`, `follow_user_id`) VALUES ('{$profileid}', '{$followerid}')";
       $result = mysql_query($query);


       if (!$result)
       {
               $errors[] = "Query: {$query}<br>Error: " . mysql_error();

       }
}	
}



?>



<div class="followbuttonbox"> 
<a href="<?php echo $_SERVER['PHP_SELF']; ?>?ID=<?php echo $profileid; ?>"><img src="/images/follow.png" id="followbutton"   /></a>
<input type="hidden"  id="followbutton" value="true" /> 
</div>

[MDCode]

You first need a form for php to do anything. To get it on click you need to use javascript

[KevinM1]

You either need a form or ajax. This comes down to the "Do you know the differences between PHP and Javascript?" question I asked you a few weeks ago.

[cyberRobot]

Have you considered merging the hidden field into the link?

 

<div class="followbuttonbox">
<a href="<?php echo $_SERVER['PHP_SELF']; ?>?ID=<?php echo $profileid; ?>&followbutton=true"><img src="/images/follow.png" id="followbutton" /></a>
</div>

 

You would need to change and $_POST references to $_GET.

[justlukeyou]

Hi,

 

I would prefer to continue using PHP. How would I add a form, Im sure almost there with it. The code was working when the page is visited. I just need to make it work only when the button is clicked.

 

<form>
<?php



$followerid = intval($_SESSION['userID']);
       $profileid  = intval($row['id']);



if(isset($_POST['followbutton']) && $_POST['followbutton'] == 'true'){




if($profileid =  $followerid) {
       $errors['profileid'] = "This is a test error.";
   }



if(!$errors){
       //Validation of input vars passed, attempt to run query
       //Force vars to be ints to be safe for query statement


	    $followerid = intval($_SESSION['userID']);
       $profileid  = intval($row['id']);

       $query = "INSERT INTO `follow` (`user_id`, `follow_user_id`) VALUES ('{$profileid}', '{$followerid}')";
       $result = mysql_query($query);


       if (!$result)
       {
               $errors[] = "Query: {$query}<br>Error: " . mysql_error();

       }
}	
}



?>




      <?php if($errors['profileid']) print '<div class="invalid">' . $errors['profileid'] . ''; ?>  



</div>
<div class="followbuttonbox"> 
<a href="<?php echo $_SERVER['PHP_SELF']; ?>?ID=<?php echo $profileid; ?>"><img src="/images/follow.png"  id="followbutton"   /></a>
<input type="hidden"  id="followbutton" value="true" /> 
</form>

[cyberRobot]

Here's a quick tutorial on building forms and processing them with PHP:

http://www.tizag.com/phpT/forms.php

 

Note that there are many other tutorials available through Google:

https://www.google.c...rocessed by php

[justlukeyou]

Thanks,

 

I have a number of forms which appear to be working fine. However I am stuck on creating one which has no input. The idea is to use it to insert the ID of the user.

 

I have done a search, this is the closest I have found but it still low on detail.

 

http://www.designerstalk.com/forums/help-me/53155-php-post-without-input.html

 

I can echo the two values, its just a matter of inserting them into the database.

 

echo $profileid; 
echo $followerid;