Name Type Location Description
hook_field_display_ENTITY_TYPE_alter function modules/field/field.api.php Alters the display settings of a field on a given entity type before it gets displayed.
UrlAlterFunctionalTest::testUrlAlter function modules/simpletest/tests/path.test Test that URL altering works and that it occurs in the correct order.
hook_field_available_languages_alter function modules/field/field.api.php Alter field_available_languages() values.
QueryAlterableInterface::addMetaData function includes/database/query.inc Adds additional metadata to the query.
translation_form_node_type_form_alter function modules/translation/translation.module Implements hook_form_FORM_ID_alter() for node_type_form().
FormAlterTestCase::testExecutionOrder function modules/simpletest/tests/form.test Tests execution order of hook_form_alter() and hook_form_FORM_ID_alter().
hook_field_extra_fields_display_alter function modules/field/field.api.php Alters the display settings of pseudo-fields before an entity is displayed.
hook_views_ui_display_top_links_alter function modules/views/views.api.php This hooks allows to alter the links at the top of the view edit form. Some modules might want to add links there.
hook_form_system_theme_settings_alter function modules/system/theme.api.php Allow themes to alter the theme-specific settings form.
file_test_file_mimetype_mapping_alter function modules/simpletest/tests/file_test.module Implements hook_file_mimetype_mapping_alter().
hook_layout_load_by_router_item_alter function modules/layout/layout.api.php Perform alterations to the list of layouts that match the path of a router item.
taxonomy_test_query_term_access_alter function modules/simpletest/tests/taxonomy_test.module Implements hook_query_TAG_alter().
node_access_test_form_node_form_alter function modules/node/tests/node_access_test/node_access_test.module Implements hook_form_BASE_FORM_ID_alter().
node_layout_load_by_router_item_alter function modules/node/node.module Implements hook_layout_load_by_router_item_alter().
block_form_form_test_alter_form_alter function modules/simpletest/tests/form_test.module Implements hook_form_FORM_ID_alter() on behalf of block.module.
locale_test_language_types_info_alter function modules/locale/tests/locale_test/locale_test.module Implements hook_language_types_info_alter().
hook_image_supported_extensions_alter function modules/image/image.api.php Modify the array of supported image extensions.
SystemInfoAlterTestCase::getSystemInfo function modules/system/tests/system.test Returns the info array as it is stored in {system}.
NodeEntityFieldQueryAlter::$accessUser property modules/node/tests/node.test User with permission to view content.
contact_form_user_admin_settings_alter function modules/contact/contact.module Implements hook_form_FORM_ID_alter().
DatabaseAlterTestCase::testSimpleAlter function modules/simpletest/tests/database_test.test Test that we can do basic alters.
file_field_views_data_views_data_alter function modules/file/views/file.views.inc Implements hook_field_views_data_views_data_alter().
views_plugin_pager::exposed_form_alter function modules/views/plugins/views_plugin_pager.inc
color_form_system_theme_settings_alter function modules/color/color.module Implements hook_form_FORM_ID_alter().
system_form_form_test_alter_form_alter function modules/simpletest/tests/form_test.module Implements hook_form_FORM_ID_alter() on behalf of system.module.
field_test_field_storage_details_alter function modules/field/tests/field_test/field_test.storage.inc Implements hook_field_storage_details_alter().
hook_language_fallback_candidates_alter function modules/system/language.api.php Perform alterations on the language fallback candidates.
admin_bar_form_alter_flush_cache_submit function modules/admin_bar/admin_bar.module Form submission handler to flush Administration bar caches.
system_image_supported_extensions_alter function modules/system/system.module Implements hook_image_supported_extensions_alter().
translation_language_switch_links_alter function modules/translation/translation.module Implements hook_language_switch_links_alter().
hook_date_combo_validate_date_end_alter function modules/date/date.api.php Alter the local end date objects created by the date_combo validation.
BackdropWebTestCaseCache::alterToMyISAM function modules/simpletest/backdrop_web_test_case_cache.php Alter tables to MyISAM engine to speed up tests.
bartik_form_system_theme_settings_alter function modules/color/color.legacy.inc Alters the theme settings form for Bartik legacy colors.
form_test_form_user_register_form_alter function modules/simpletest/tests/form_test.module Implements hook_form_FORM_ID_alter() for the registration form.
image_field_views_data_views_data_alter function modules/image/views/image.views.inc Implements hook_field_views_data_views_data_alter().
node_form_system_themes_admin_form_alter function modules/node/node.module Implements hook_form_FORM_ID_alter().
dblog_form_system_logging_settings_alter function modules/dblog/dblog.module Implements hook_form_FORM_ID_alter() for system_logging_settings().
NodeQueryAlter::testNodeQueryAlterWithUI function modules/node/tests/node.test Tests that node access permissions are followed.
hook_field_widget_WIDGET_TYPE_form_alter function modules/field/field.api.php Alter widget forms for a specific widget provided by another module.
NodeEntityFieldQueryAlter::$noAccessUser property modules/node/tests/node.test User without permission to view content.
field_test_field_widget_properties_alter function modules/field/tests/field_test/field_test.module Implements hook_field_widget_properties_alter().
path_form_taxonomy_form_vocabulary_alter function modules/path/path.module Implements hook_form_FORM_ID_alter() for taxonomy_form_vocabulary().
date_form_field_ui_field_edit_form_alter function modules/date/date.module Implements hook_form_FORM_ID_alter() for field_ui_field_edit_form().
list_form_field_ui_field_edit_form_alter function modules/field/modules/list/list.module
hook_field_formatter_settings_form_alter function modules/field/field.api.php Alter the form elements for a formatter's settings.
DatabaseAlterTestCase::testAlterWithJoin function modules/simpletest/tests/database_test.test Test that we can alter the joins on a query.
user_form_field_ui_field_edit_form_alter function modules/user/user.module Implements hook_form_FORM_ID_alter().
form_test_form_form_test_alter_form_alter function modules/simpletest/tests/form_test.module Implements hook_form_FORM_ID_alter().
locale_form_language_admin_add_form_alter function modules/locale/locale.module Implements hook_form_FORM_ID_alter() for language_admin_add_form(().
syslog_form_system_logging_settings_alter function modules/syslog/syslog.module Implements hook_form_FORM_ID_alter().

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