Drupal 7 - get variables from hook_theme - variables

Question

I tried to pass a variable from a custom module to a tpl file.
In my custom module (named example)
1. I created a route with an argument via hook_menu :
function example_menu() {
$items['example/fancybox-photos/%'] = array(
'page callback' => 'example_display_fancybox_photos',
'page arguments' => array(2),
'type' => MENU_CALLBACK,
'access arguments' => array('access content'),
);
return $items;
}
2. I created my page callback function :
function example_display_fancybox_photos($nid) {
$nodePhoto = node_load($nid);
$field_photo = field_get_items('node', $nodePhoto, 'field_photo');
$photo = [
"field_photo" => $field_photo[0]['uri'],
....
];
return theme('example_fancybox_photos', array('infosPhoto' => $photos));
}
3 . I created a hook_theme
function example_theme() {
$themes = array();
$themes['example_fancybox_photos'] = array(
'template' => 'templates/example-fancybox-photos',
'variables' => array('infosPhoto' => NULL),
);
return $themes;
}
4 . I finally created a tpl named "example-fancybox-photos.tpl.php" in templates folder (in theme folder)
<pre><?php print var_dump($infosPhoto); ?></pre>
The result is NULL
I did some researchs but i dont understand why the variable is still NULL.
thanks for your help !

Answer 1

I finally managed to get the variable from the module to the tpl !
1. I created a route with an argument via hook_menu :
function example_menu() {
$items['example/fancybox-photos/%'] = array(
'page callback' => 'example_display_fancybox_photos',
'page arguments' => array(2),
'type' => MENU_CALLBACK,
'access arguments' => array('access content'),
);
return $items;
}
2. I created my page callback function :
function example_display_fancybox_photos($nid) {
$nodePhoto = node_load($nid);
$field_photo = field_get_items('node', $nodePhoto, 'field_photo');
$photos = [
"field_photo" => $field_photo[0]['uri'],
....
];
return theme('example_fancybox_photos', array('infosPhoto' => $photos));
}
3 . I created a hook_theme
function example_theme() {
$themes = array();
$themes['example_fancybox_photos'] = array(
'template' => 'templates/example_fancybox_photos',
'variables' => array('infosPhoto' => NULL),
);
return $themes;
}
4 . I finally created a tpl named "example_fancybox_photos.tpl.php" in templates folder (in MODULE (example) folder)
The problems were that:
- the tpl was not named in the same way and with dashes instead of underscore
- the tpl was in the template folder of the theme and not of the module

Answer 2

You have passed $photos but you have array as $photo. try to change that
Hope the below code helps you.
function example_menu(){
$items['example/fancybox-photos/%'] = array(
'page callback' => 'example_display_fancybox_photos',
'page arguments' => array(2),
'type' => MENU_CALLBACK,
'access arguments' => array('access content'),
);
return $items;
}
function example_display_fancybox_photos($nid){
$photos = 'value from example module!';
return theme('example_fancybox_photos',array('photos' => $photos));
}
function example_theme() {
$path = drupal_get_path('module', 'example');
return array(
'example_fancybox_photos' => array(
'variables' => array('photos' => null),
'template' => 'example_fancybox_photos',
'path' => $path,
),
);
}
Place your tpl file example_fancybox_photos.tpl.php in your module directory and inside it use the below code.
<?php print $photos; ?>
or
function example_theme() {
return array(
'example_fancybox_photos' => array(
'variables' => array('photos' => null),
'template' => 'example_fancybox_photos',
),
);
}
Place your tpl file example_fancybox_photos.tpl.php in your theme directory and inside it place the below code
<?php print $photos; ?>