hook_library_info_build()
Add dynamic library definitions.
Modules may implement this hook to add dynamic library definitions. Static libraries, which do not depend on any runtime information, should be declared in a modulename.libraries.yml file instead.
Return value
array[] An array of library definitions to register, keyed by library ID. The library ID will be prefixed with the module name automatically.
See also
core.libraries.yml
Related topics
- Hooks
- Define functions that alter the behavior of Drupal core.
File
- core/lib/Drupal/Core/Render/theme.api.php, line 836
- Hooks and documentation related to the theme and render system.
Code
function hook_library_info_build() {
$libraries = [];
// Add a library whose information changes depending on certain conditions.
$libraries['mymodule.zombie'] = [
'dependencies' => [
'core/backbone',
],
];
if (Drupal::moduleHandler()->moduleExists('minifyzombies')) {
$libraries['mymodule.zombie'] += [
'js' => [
'mymodule.zombie.min.js' => [],
],
'css' => [
'base' => [
'mymodule.zombie.min.css' => [],
],
],
];
}
else {
$libraries['mymodule.zombie'] += [
'js' => [
'mymodule.zombie.js' => [],
],
'css' => [
'base' => [
'mymodule.zombie.css' => [],
],
],
];
}
// Add a library only if a certain condition is met. If code wants to
// integrate with this library it is safe to (try to) load it unconditionally
// without reproducing this check. If the library definition does not exist
// the library (of course) not be loaded but no notices or errors will be
// triggered.
if (Drupal::moduleHandler()->moduleExists('vampirize')) {
$libraries['mymodule.vampire'] = [
'js' => [
'js/vampire.js' => [],
],
'css' => [
'base' => [
'css/vampire.css',
],
],
'dependencies' => [
'core/jquery',
],
];
}
return $libraries;
}
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