title: Using $_POST values in CodeIgniter
body: <p>Application makes an AJAX request to a method in a controller.</p>
  
  <p>The controller then calls a method in the model to run a query on the DB and then return the results.</p>
  
  <p>AJAX "type" specified as POST.</p>
  
  <p>Even though $_POST superglobal values are available for use in model, should one still list the $_POST values in the model method signature?</p>
  
  <p>I'm thinking this is best practice so people dissecting a system can quickly see inputs going into model methods</p>
  
  <pre><code>$this-&gt;Students_table_model-&gt;attendance_history_get($_POST['students_id'],$_POST['start_date'],$_POST['end_date']);
  
  public function attendance_history_get($students_id,$start,$end)
  </code></pre>
  
  <p>VS</p>
  
  <pre><code>$this-&gt;Students_table_model-&gt;attendance_history_get();
  </code></pre>
  
  <p>and then just using the available $_POST values in model method attendance_history_get()</p>