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POI'm trying to extend the CodeIgniter Form Validation library
 

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  1. POI'm trying to extend the CodeIgniter Form Validation library
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    <p>This is my custom validation function. It uses geocoding from <a href="http://in-the-attic.com/2010/08/02/codeigniter-google-maps-library-using-google-maps-api-version-3/" rel="nofollow noreferrer">a Google Maps CodeIgniter library</a> to check if a location exists.</p> <pre><code>public function address_check($str) { $this-&gt;load-&gt;library('GMap'); $this-&gt;gmap-&gt;GoogleMapAPI(); // this method checks the cache and returns the cached response if available $geocodes = $this-&gt;gmap-&gt;getGeoCode("{$str}, United States"); $this-&gt;form_validation-&gt;set_message('address_check', 'The %s field contains an invalid address'); if (empty($geocodes)) { return FALSE; } else { return TRUE; } } </code></pre> <p>If I place the function above inside my Controller along with the following rule, it works perfectly well.</p> <pre><code>$this-&gt;load-&gt;library('form_validation'); $this-&gt;form_validation-&gt;set_rules('location', 'Location', 'callback_address_check'); </code></pre> <hr> <p>Now I simply want to move it out of my Controller. So I'm trying to extend my CodeIgniter Form Validation library as per this <a href="https://stackoverflow.com/a/10652934/594235">SO answer</a> and <a href="http://ellislab.com/codeigniter/user-guide/general/creating_libraries.html" rel="nofollow noreferrer">the CI documentation</a>.</p> <p>I created a file here: <code>/codeigniter/application/libraries/MY_Form_validation.php</code>:</p> <pre><code>&lt;?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class MY_Form_validation extends CI_Form_validation { public function __construct() { parent::__construct(); } public function address_check($str) { $this-&gt;load-&gt;library('GMap'); $this-&gt;gmap-&gt;GoogleMapAPI(); // this method checks the cache and returns the cached response if available $geocodes = $this-&gt;gmap-&gt;getGeoCode("{$str}, United States"); $this-&gt;form_validation-&gt;set_message('address_check', 'The %s field contains an invalid address'); if (empty($geocodes)) { return FALSE; } else { return TRUE; } } } </code></pre> <p>And from within my controller, I am setting the rule like this...</p> <pre><code>$this-&gt;load-&gt;library('form_validation'); $this-&gt;form_validation-&gt;set_rules('location', 'Location', 'address_check'); </code></pre> <p>The first problem I found and solved myself was that nothing was happening because <a href="https://stackoverflow.com/a/10652934/594235">that SO answer</a> incorrectly specified the file name to be <code>My_Form_validation.php</code> where it should have been <code>MY_Form_validation.php</code></p> <p>Now that the function is being called, the new problem is that I am getting the following error:</p> <blockquote> <p>Message: Undefined property: MY_Form_validation::$load</p> <p>Filename: libraries/MY_Form_validation.php</p> <p>Line Number: 12</p> </blockquote> <p>This is line 12:</p> <pre><code>$this-&gt;load-&gt;library('GMap'); </code></pre> <p>I can't access a library from within a library? What's the proper way to fix this? I'd prefer not to auto-load the GMap library since I won't be using it all the time. Any other problems within my method?</p>
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