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Erreurs de modèle

Problèmes Smarty courants et techniques de débogage pour les thèmes et modules XOOPS.


flowchart TD
A[Template Error] --> B{Error Visible?}
B -->|No| C[Enable Template Debug]
B -->|Yes| D[Read Error Message]
C --> E{Type of Error?}
E -->|Syntax| F[Check Template Syntax]
E -->|Variable| G[Check Variable Assignment]
E -->|Plugin| H[Check Smarty Plugin]
D --> I{Parse Error?}
I -->|Yes| J[Check Braces Matching]
I -->|No| K{Undefined Variable?}
K -->|Yes| L[Check Variable in PHP]
K -->|No| M{File Not Found?}
M -->|Yes| N[Check Template Path]
M -->|No| O[Clear Cache]
F --> P[Fix Syntax]
G --> Q[Verify PHP Code]
H --> R[Install Plugin]
J --> P
L --> Q
N --> S[Verify paths]
O --> T{Error Resolved?}
P --> T
Q --> T
R --> T
S --> T
T -->|No| U[Enable Debug Mode]
T -->|Yes| V[Problem Solved]
U --> D

pie title Template Error Types
"Syntax Errors" : 25
"Undefined Variables" : 25
"Missing Plugins" : 15
"Cache Issues" : 20
"Encoding Problems" : 10
"Path Issues" : 5

Symptômes:

  • Messages “Smarty syntax error”
  • Les modèles ne se compilent pas
  • Page vierge sans résultat

Messages d’erreur:

Syntax error: unrecognized tag 'myfunction'
Unexpected "}" near end of template

Balise de fermeture manquante:

{* WRONG *}
{if $user}
User: {$user.name}
{* Missing {/if} *}
{* CORRECT *}
{if $user}
User: {$user.name}
{/if}

Syntaxe de variable incorrecte:

{* WRONG *}
{$user->name} {* Use . not -> *}
{$array[key]} {* Use quoted keys *}
{$func()} {* Can't call functions directly *}
{* CORRECT *}
{$user.name}
{$array.key}
{$array['key']}
{$user|@function} {* Use modifiers instead *}

Guillemets non appariés:

{* WRONG *}
{if $name == 'John} {* Mismatched quotes *}
{assign var="user' value="John"}
{* CORRECT *}
{if $name == 'John'}
{assign var="user" value="John"}

Solutions:

{* Always balance braces *}
{if condition}
...
{elseif condition}
...
{else}
...
{/if}
{* Verify tag format *}
{foreach $items as $item}
...
{/foreach}
{* Check all variables are defined *}
{if isset($variable)}
{$variable}
{/if}

Symptômes:

  • Avertissements “Undefined variable”
  • La variable s’affiche vide
  • Avis PHP dans le journal des erreurs

Messages d’erreur:

Notice: Undefined variable: myvar
Smarty notice: variable "$user" not available

Script de débogage:

<?php
// In your template file or PHP code
// Create modules/yourmodule/debug_template.php
require_once '../../mainfile.php';
// Get template engine
$tpl = new XoopsTpl();
// Check what variables are assigned
echo "<h1>Template Variables</h1>";
echo "<pre>";
print_r($tpl->get_template_vars());
echo "</pre>";
// Or dump Smarty object
echo "<h1>Smarty Debug</h1>";
echo "<pre>";
$tpl->debug_vars();
echo "</pre>";
?>

Corriger en PHP:

<?php
// Ensure variables are assigned before rendering
$xoopsTpl = new XoopsTpl();
// WRONG - variable not assigned
$xoopsTpl->display('file:templates/page.html');
// CORRECT - assign variables first
$user = [
'name' => 'John',
'email' => 'john@example.com'
];
$xoopsTpl->assign('user', $user);
$xoopsTpl->display('file:templates/page.html');
?>

Corriger dans le modèle:

{* Check if variable exists before using *}
{if isset($user)}
<p>User: {$user.name}</p>
{else}
<p>No user data</p>
{/if}
{* Use default values *}
<p>Name: {$user.name|default:"No name"}</p>
{* Check array key exists *}
{if isset($array.key)}
{$array.key}
{/if}

Symptômes:

  • Les données ne se formatent pas correctement
  • Le texte s’affiche en HTML
  • Casse/codage incorrect

Messages d’erreur:

Warning: undefined modifier 'stripslashes'

Modificateurs courants:

{* String operations *}
{$text|upper} {* Uppercase *}
{$text|lower} {* Lowercase *}
{$text|capitalize} {* First letter capital *}
{$text|truncate:20:"..."} {* Truncate to 20 chars *}
{$text|strip_tags} {* Remove HTML tags *}
{* HTML/Formatting *}
{$html|escape} {* HTML escape *}
{$html|escape:'html'}
{$url|escape:'url'} {* URL escape *}
{$text|nl2br} {* Newlines to <br> *}
{* Arrays *}
{$array|@count} {* Array count *}
{$array|@implode:', '} {* Join array *}
{* Default values *}
{$var|default:"No value"}
{* Date formatting *}
{$date|date_format:"%Y-%m-%d"} {* Format date *}
{* Math operations *}
{$number|math:'+':10} {* Math operations *}

Enregistrer un modificateur personnalisé:

<?php
// Register in your module
$xoopsTpl = new XoopsTpl();
$xoopsTpl->register_modifier('mymodifier', 'my_modifier_function');
function my_modifier_function($string) {
return strtoupper($string);
}
?>

Symptômes:

  • Les modifications de modèle n’apparaissent pas
  • L’ancien contenu s’affiche toujours
  • Les inclusions ou ressources obsolètes

Solutions:

Fenêtre de terminal
# Clear Smarty cache directories
rm -rf /path/to/xoops/xoops_data/caches/smarty_cache/*
rm -rf /path/to/xoops/xoops_data/caches/smarty_compile/*
# Clear specific module cache
rm -rf /path/to/xoops/xoops_data/caches/smarty_cache/modules/*

Effacer le cache dans le code:

<?php
// Clear all Smarty caches
$xoopsTpl = new XoopsTpl();
$xoopsTpl->clear_cache();
$xoopsTpl->clear_compiled_tpl();
// Clear specific template cache
$xoopsTpl->clear_cache('file:templates/page.html');
// Clear all cached files
require_once XOOPS_ROOT_PATH . '/class/xoopsfile.php';
$dh = opendir(XOOPS_CACHE_PATH . '/smarty_cache');
while (($file = readdir($dh)) !== false) {
if (is_file(XOOPS_CACHE_PATH . '/smarty_cache/' . $file)) {
unlink(XOOPS_CACHE_PATH . '/smarty_cache/' . $file);
}
}
closedir($dh);
?>

Symptômes:

  • Erreurs “Unknown modifier” ou “Unknown plugin”
  • Les fonctions personnalisées ne fonctionnent pas
  • Erreurs de compilation avec les plug-ins

Messages d’erreur:

Fatal error: Call to undefined function smarty_modifier_custom
Unknown modifier 'myfunction'

Créer un plug-in personnalisé:

modules/yourmodule/plugins/modifier.custom.php
<?php
/**
* Smarty {$var|custom} modifier plugin
*/
function smarty_modifier_custom($string, $param = '') {
// Your custom code
return strtoupper($string) . $param;
}
?>

Enregistrer le plug-in:

<?php
// In your module's init code
$xoopsTpl = new XoopsTpl();
// Add plugin directory to Smarty
$xoopsTpl->addPluginDir(
XOOPS_ROOT_PATH . '/modules/yourmodule/plugins'
);
// Or manually register
$xoopsTpl->register_modifier(
'custom',
'smarty_modifier_custom'
);
?>

Types de plug-in:

modifier.name.php
<?php
function smarty_modifier_name($string) {
return $string;
}
// Block plugin: block.name.php
function smarty_block_name($params, $content, &$smarty, &$repeat) {
if (!isset($smarty->security_settings['IF_FUNCS'])) {
$smarty->security_settings['IF_FUNCS'] = [];
}
return $content;
}
// Function plugin: function.name.php
function smarty_function_name($params, &$smarty) {
return 'output';
}
// Filter plugin: filter.name.php
function smarty_filter_name($code, &$smarty) {
return $code;
}
?>

Symptômes:

  • Les modèles inclus ne se chargent pas
  • Le modèle parent introuvable
  • CSS/JS ne se charge pas

Messages d’erreur:

Template file 'file:path/to/template.html' not found
Can't find template file 'header.html'

Syntaxe d’inclusion correcte:

{* Include template *}
{include file="file:templates/header.html"}
{* Include with variables *}
{include file="file:templates/header.html" title="My Page"}
{* Template inheritance *}
{extends file="file:templates/base.html"}
{* Named blocks *}
{block name="content"}
Page content here
{/block}
{* Static resources *}
<link rel="stylesheet" href="{$xoops_url}/themes/{$xoops_theme}/style.css">
<script src="{$xoops_url}/modules/{$xoops_module_dir}/js/script.js"></script>

Vérifier le chemin du modèle:

Fenêtre de terminal
# Verify template file exists
ls -la /path/to/xoops/themes/mytheme/templates/
ls -la /path/to/xoops/modules/mymodule/templates/
# Check permissions
stat /path/to/xoops/themes/mytheme/templates/header.html

Symptômes:

  • Impossible d’accéder aux valeurs du tableau
  • Les propriétés d’objet ne s’affichent pas
  • Les variables complexes échouent

Messages d’erreur:

Undefined variable: user.profile.name

Syntaxe correcte:

{* Array access *}
{$array.key} {* Use . for keys *}
{$array['key']}
{$array.0} {* Numeric indexes *}
{$array.$variable_key} {* Dynamic keys *}
{* Nested arrays *}
{$user.profile.name}
{$data.items.0.title}
{* Object properties *}
{$object.property}
{$object.method|escape} {* Method calls *}
{* Safe access with isset *}
{if isset($array.key)}
{$array.key}
{/if}
{* Check length *}
{if count($array) > 0}
Items found
{/if}

Symptômes:

  • Texte brouillé dans les modèles
  • Les caractères spéciaux s’affichent mal
  • Les caractères UTF-8 sont cassés

Solutions:

Encodage du fichier modèle:

{* Set charset in meta tag *}
<meta charset="UTF-8">
{* Or in HTML head *}
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
{* Proper PHP declaration *}
header('Content-Type: text/html; charset=utf-8');

Code PHP:

<?php
// Set output encoding
header('Content-Type: text/html; charset=utf-8');
// Ensure database uses UTF-8
$conn = new mysqli('localhost', 'user', 'pass', 'db');
$conn->set_charset('utf8mb4');
// Or in SQL
SET NAMES utf8mb4;
SET CHARACTER SET utf8mb4;
// Assign data properly
$text = mb_convert_encoding($text, 'UTF-8', 'UTF-8');
$xoopsTpl->assign('text', $text);
?>

Activer le débogage des modèles:

<?php
// In mainfile.php
define('XOOPS_DEBUG_LEVEL', 2);
// In Smarty configuration
$xoopsTpl->debugging = true;
$xoopsTpl->debug_tpl = SMARTY_DIR . 'debug.tpl';
// Or in module
$tpl = new XoopsTpl();
$tpl->debugging = true;
?>

Sortie de la console de débogage:

<?php
// Create modules/yourmodule/debug_smarty.php
require_once '../../mainfile.php';
require_once XOOPS_ROOT_PATH . '/class/smarty/Smarty.class.php';
$smarty = new Smarty();
$smarty->debugging = true;
// Check compiled template
$compiled_dir = $smarty->getCompileDir();
echo "<h1>Compiled Templates</h1>";
$files = glob($compiled_dir . '/*.php');
foreach ($files as $file) {
echo "<p>" . basename($file) . "</p>";
}
// View compiled code
echo "<h1>Compiled Code</h1>";
echo "<pre>";
$latest = max(array_map('filemtime', $files));
foreach ($files as $file) {
if (filemtime($file) == $latest) {
echo htmlspecialchars(file_get_contents($file));
break;
}
}
echo "</pre>";
?>

graph TD
A[Template Validation] --> B["1. Syntax Check"]
A --> C["2. Variable Verification"]
A --> D["3. Plugin Check"]
A --> E["4. File Paths"]
A --> F["5. Encoding"]
A --> G["6. Cache"]
B --> B1["✓ All braces matched"]
B --> B2["✓ All tags closed"]
B --> B3["✓ Proper syntax"]
C --> C1["✓ Variables assigned"]
C --> C2["✓ Correct property access"]
C --> C3["✓ Default values set"]
D --> D1["✓ Modifiers available"]
D --> D2["✓ Plugins registered"]
D --> D3["✓ Custom functions work"]
E --> E1["✓ Relative paths correct"]
E --> E2["✓ Files exist"]
E --> E3["✓ Permissions correct"]
F --> F1["✓ UTF-8 declared"]
F --> F2["✓ HTML charset set"]
F --> F3["✓ Database UTF-8"]
G --> G1["✓ Cache cleared"]
G --> G2["✓ Compiled fresh"]

  1. Activer le débogage lors du développement
  2. Valider les modèles avant le déploiement
  3. Effacer le cache après les modifications
  4. Utiliser git pour suivre les modifications du modèle
  5. Tester dans plusieurs navigateurs pour les problèmes d’encodage
  6. Documenter les plug-ins personnalisés et les modificateurs
  7. Utiliser l’héritage de modèle pour la cohérence

  • Guide de débogage Smarty
  • Modèles Smarty
  • Activer le mode débogage
  • FAQ Thème

#xoops #dépannage #modèles #smarty #débogage