codeigniter error in foreach passing variable and query - php

Question

I am trying to populate a dropdown form with an array of events from a database table.
I am getting all kinds of errors:
undefined $user_events
etc.
I know it is the way I am passing the array from the controller I think.
Model:
public function dropdown_add_event($id, $Id)
{
$sql = "SELECT *
FROM table_eventcards
WHERE table_eventcards.id = ?
AND table_eventcards.Id = ?";
$query = $this->db->query($sql, array($id, $Id));
return $query->result_array();
}
Controller:
$this->data['user_events'] = $this->model_location->dropdown_add_event(); // Retrieve an array of user events
View:
<?php
$user_events = '';
if($user_events){
foreach($user_events as $events): {
?>
<div class="row">
<div class="col-md-12">
<h3>Add Event To Location</h3>
<div class="row">
<div class="row">
<div class="row">
<div id="myselect" class="col-md-12">
<p></p>
<div class="form-group col-xs-5 col-lg-3">
<?php
$attributes = 'input type="hidden" name="myselect" value="events[]"';
echo form_dropdown('myselect', $events, '',$attributes);
?>
<button id="grab1" type="button" class="btn btn-default">Clear</button>
<hr/>
</div>
</div>
</div>
</div>
</div>
<?php
}
endforeach;
}
?>
Updated:
$Id is already defined a few lines above:
$data['Id'] = $this->session->userdata['logged_data']['member_id'];

Answer 1

In your controller, it seems you forgot to gave out parameters:
$this->data['user_events'] = $this->model_location->dropdown_add_event();
// ^^ $id, $fkUserId
No parameters are passed/found dropdown_add_event();
Just pass the appropriate variables that you have on your controller:
$fkUserId = $data['fkUserId'];
$this->data['user_events'] = $this->model_location->dropdown_add_event($id, $fkUserId);
$this->load->view('view_name', $this->data);