How to display record based on their ID?

In your view.php

<?php foreach($jobdata as $list):?>
           echo $list->field_name;
<?php endforeach; ?>

I did same but getting error 
Message: Invalid argument supplied for foreach()

In your model change the return statement to:

PHP Code:

if($query->num_rows() > 0)
    return $query->result();
else
    return NULL; 


In your view check for the $jobdata is set

Code:

<?php if (isset($jobdata)): ?>
   <?php foreach ($jobdata as $row): ?>
       ...
   <?php endforeach ?>
<?php endif ?>