Getting data from model with custom component for Joomla - php

Question

So I've been trying to get data from a single item from the database using the MVC method in Joomla. I've been inspecting com_content how to do this, but I can't seem to get the id from the URL
This is my model to get the data for a single item
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import Joomla modelitem library
jimport('joomla.application.component.modelitem');
/**
* Issuu Model
*/
class IssuuModelItem extends JModelItem
{
/**
* #var string msg
*/
protected $item;
/**
* Method to auto-populate the model state.
*
* Note. Calling getState in this method will result in recursion.
*
* #since 1.6
*
* #return void
*/
protected function populateState()
{
$app = JFactory::getApplication('site');
// Load state from the request.
$id = $app->input->getInt('id');
$this->setState('item.id', $id);
$offset = $app->input->getUInt('limitstart');
$this->setState('list.offset', $offset);
// Load the parameters.
$params = $app->getParams();
$this->setState('params', $params);
// TODO: Tune these values based on other permissions.
$user = JFactory::getUser();
if ((!$user->authorise('core.edit.state', 'com_issuu')) && (!$user->authorise('core.edit', 'com_issuu')))
{
$this->setState('filter.published', 1);
$this->setState('filter.archived', 2);
}
$this->setState('filter.language', JLanguageMultilang::isEnabled());
}
/**
* Returns a reference to the a Table object, always creating it.
*
* #param type The table type to instantiate
* #param string A prefix for the table class name. Optional.
* #param array Configuration array for model. Optional.
* #return JTable A database object
* #since 2.5
*/
public function getTable($type = 'Item', $prefix= 'IssuuTable', $config = array()) {
return JTable::getInstance($type,$prefix,$config);
}
/**
* Get the message
* #return string The message to be displayed to the user
*/
public function getItem($id = null)
{
$id = (!empty($id)) ? $id : (int) $this->getState('item.id');
if(!is_array($this->item)) {
$this->item = array();
}
// Get a db connection.
$db = JFactory::getDbo();
// Create a new query object.
$query = $db->getQuery(true);
// Select all records from the user profile table where key begins with "custom.".
// Order it by the ordering field.
$query->select($db->quoteName(array('id', 'title', 'username', 'docname', 'docid','date', 'pages', 'description')));
$query->from($db->quoteName('#__issuu_publications'));
$query->where($db->quoteName('state') . ' = `1` AND ' . $db->quoteName('id') . ' = ' . $db->qouteName($id));
$query->order('date ASC');
// Reset the query using our newly populated query object.
$db->setQuery($query);
// Load the results as a list of stdClass objects (see later for more options on retrieving data).
$this->items = $db->loadObjectList();
return $this->items;
}
}
I get a SQL error because the $id is empty.. (I removed the prefix from the table)
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ORDER BY date ASC' at line 4 SQL=SELECT `id`,`title`,`username`,`docname`,`docid`,`date`,`pages`,`description` FROM `#__issuu_publications` WHERE `state` = `1` AND `id` = ORDER BY date ASC
Any help is appreciated!

Answer 1

Try replacing your where clause with the following:
$query->where($db->quoteName('state') . ' = 1 AND ' . $db->quoteName('id') . ' = ' . $db->quote((int) $id));
I've removed the quotes around 1
replaced $id with (int) $id
And corrected a spelling mistake on quoteName