<?php
/**
* Smarty {json} plugin
*
* Type: function
* Name: json
* Date: Apr 12, 2009
* Purpose: Read JSON from file, decode and assign data to Smarty template variable
* Syntax: {json file="filename.json"}: 'file' is a required parameter (URL)
* Predefined additional parameters:
* - assign="data": assign all JSON data to template variable $data
* - obj2obj [ Boolean | default:false ]:
* decodes JSON objects as either PHP associative arrays or PHP objects
* - debug [ Boolean | default:false ]: print decoded data in template
* Variable parameters:
* {json file="filename.json" home="homepage" lang="languages"}:
* assign (JSONdata)["homepage"] to template variable $home
* and (JSONdata)["languages"] to $lang,
* compare to: {config_load file="filename.conf" section="homepage"}
* Install: Drop into the plugin directory
* @link http://jlix.net/extensions/smarty/json
* @author Sander Aarts <smarty at jlix dot net>
* @copyright 2009 Sander Aarts
* @license LGPL License
* @version 1.0.1
* @param array
* @param Smarty
*/
function smarty_function_json($params, &$smarty) {
$params['file'] = isset($params['file']) ? $params['file'] : null;
$params['obj2obj'] = isset($params['obj2obj']) ? $params['obj2obj'] : true;
$params['debug'] = isset($params['debug']) ? $params['debug'] : false;
$larConfigDir = $smarty->getConfigDir();
$lstConfigDir = $larConfigDir[0];
//echo "<pre>";
//print_r($smarty->template_dir);
//echo "</pre>";
//echo "<h1>Params</h1>";
//echo "<pre>";
//print_r($params);
//echo "</pre>";
if (!is_callable('json_decode')) {
$smarty->_trigger_fatal_error("{json} requires json_decode() function (PHP 5.2.0+)");
}
if (empty($params['file'])) {
$smarty->_trigger_fatal_error("{json} parameter 'file' must not be empty");
}
if (isset($params['assign'], $params[$params['assign']])) {
$smarty->_trigger_fatal_error("{json} parameter 'assign' conflicts with a variable assign parameter (both refer to the same variable)");
}
$assoc = ($params['obj2obj'] == true) ? false : true;
$json = trim(file_get_contents($lstConfigDir . $params['file']));
$data = json_decode($json, $assoc);
/* echo "<h1>Data</h1>";
echo "<pre>";
print_r($data);
echo "</pre>"; */
if ($params['debug'] == true) {
/* echo "<pre>";
print_r($data);
echo "</pre>"; */
}
unset($params['file'], $params['obj2obj'], $params['debug']);
$assign = array();
foreach ($params as $key => $value) {
if ($key === 'assign')
$assign[$value] = $data;
else
$assign[$key] = $assoc ? $data[$value] : $data->$value;
}
// echo "<h1>Assign</h1>";
// echo "<pre>";
// print_r($assign);
// echo "</pre>";
if (count($assign) > 0) {
$smarty->assign($assign);
} else {
return $data;
}
}
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