CI: Undefined Variable
Question
I know similiar questions have been asked, but I've still been unable to resolve my issue. When my view loads, I get the error below, and I know there is a value in $id.
Message: Undefined variable: id Filename: admin/upload_form.php Line Number: 17
Controller:
public function getEventNameById( $id ) {
$q = $this->event_model->getEventNameById( $id );
echo "Event Name: ".$q."</p>";
$data['id'] = $id;
$this->load->view('admin/upload_form',array('error' => ' ' ), $data);
}
View:
<body>
<div>
<?php echo $error;?>
<p>Event Image:</p>
<?php echo form_open_multipart('admin_upload/do_upload');?>
<input type="file" name="userfile" size="20" />
<br /><br />
<input type="hidden" id="iEventID" name="iEventID" value="<?php echo $id;?>" />
<input type="submit" value="upload event image" /> <input type="button" value="close"
onclick="window.close()">
</form>
</div>
</body>
What I need to be able to do, is query information based on an ID, then pass that ID to my view, which will then pass the ID back to a different controller function for use in updating a record in my database. In other words I need to persist the ID throughout.
Any and all assistance is greatly appreciated.
1 answers
solution1
1 ACCPTED 2011-07-25 21:49:01
You're passing the view data incorrectly:
Your code passes 3 parameters:
$this->load->view('admin/upload_form', array('error' => ' ' ), $data);
// | 1 | 2 | 3 |
You should pass all data to the second parameter:
$this->load->view('admin/upload_form', array('error' => ' ' ) + $data);
// | 1 | 2 |
The third param is supposed to be a boolean, whether or not to print the data directly (default false ) or store it in a variable ( true ).
I just used the + operator to combine the arrays, but it probably would be cleaner to use this:
$data['error'] = ''; // Not sure why this is needed, but I assume it is
$data['id'] = $id;
$this->load->view('admin/upload_form', $data);
What happened was your $data array wasn't getting passed to the view at all, hence the undefined variable.
Reference: http://codeigniter.com/user_guide/libraries/loader.html
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