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Customize: Ensure `theme_mod`-cache of `custom_css` lookup of `-1` short-circuits a `WP_Query` from being made. 

Props dlh.
See #35395.
Fixes #39259.


git-svn-id: https://develop.svn.wordpress.org/trunk@39688 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Weston Ruter 2017-01-05 07:12:23 +00:00
parent 134d073f3a
commit de72bafedc
2 changed files with 41 additions and 10 deletions
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25
src/wp-includes/theme.php
View File

@ -1653,18 +1653,17 @@ function wp_get_custom_css_post( $stylesheet = '' ) {
if ( $post_id > 0 && get_post( $post_id ) ) {
$post = get_post( $post_id );
} else {
}
// `-1` indicates no post exists; no query necessary.
if ( ! $post && -1 !== $post_id ) {
$query = new WP_Query( $custom_css_query_vars );
$post = $query->post;
/*
* Cache the lookup. See WP_Customize_Custom_CSS_Setting::update().
* Cache the lookup. See wp_update_custom_css_post().
* @todo This should get cleared if a custom_css post is added/removed.
*/
if ( $post ) {
set_theme_mod( 'custom_css_post_id', $post->ID );
} elseif ( -1 !== $post_id ) {
set_theme_mod( 'custom_css_post_id', -1 );
}
set_theme_mod( 'custom_css_post_id', $post ? $post->ID : -1 );
}
} else {
$query = new WP_Query( $custom_css_query_vars );
@ -1788,9 +1787,15 @@ function wp_update_custom_css_post( $css, $args = array() ) {
} else {
$r = wp_insert_post( wp_slash( $post_data ), true );
// Trigger creation of a revision. This should be removed once #30854 is resolved.
if ( ! is_wp_error( $r ) && 0 === count( wp_get_post_revisions( $r ) ) ) {
wp_save_post_revision( $r );
if ( ! is_wp_error( $r ) ) {
if ( get_stylesheet() === $args['stylesheet'] ) {
set_theme_mod( 'custom_css_post_id', $r );
}
// Trigger creation of a revision. This should be removed once #30854 is resolved.
if ( 0 === count( wp_get_post_revisions( $r ) ) ) {
wp_save_post_revision( $r );
}
}
}

26
tests/phpunit/tests/customize/custom-css-setting.php
View File

@ -135,6 +135,8 @@ class Test_WP_Customize_Custom_CSS_Setting extends WP_UnitTestCase {
) );
$twentyten_setting = new WP_Customize_Custom_CSS_Setting( $this->wp_customize, 'custom_css[twentyten]' );
remove_theme_mod( 'custom_css_post_id' );
$this->assertEquals( $post_id, wp_get_custom_css_post()->ID );
$this->assertEquals( $post_id, wp_get_custom_css_post( $this->setting->stylesheet )->ID );
$this->assertEquals( $twentyten_post_id, wp_get_custom_css_post( 'twentyten' )->ID );
@ -220,6 +222,29 @@ class Test_WP_Customize_Custom_CSS_Setting extends WP_UnitTestCase {
$this->assertSame( $inserted_css, $revisions[1]->post_content );
}
/**
* Test that wp_get_custom_css_post() doesn't query for a post after caching a failed lookup.
*
* @ticket 39259
*/
function test_get_custom_css_post_queries_after_failed_lookup() {
set_theme_mod( 'custom_css_post_id', -1 );
$queries_before = get_num_queries();
wp_get_custom_css_post();
$this->assertSame( get_num_queries(), $queries_before );
}
/**
* Test that wp_update_custom_css_post() updates the 'custom_css_post_id' theme mod.
*
* @ticket 39259
*/
function test_update_custom_css_updates_theme_mod() {
set_theme_mod( 'custom_css_post_id', -1 );
$post = wp_update_custom_css_post( 'body { background: blue; }' );
$this->assertSame( $post->ID, get_theme_mod( 'custom_css_post_id' ) );
}
/**
* Test crud methods on WP_Customize_Custom_CSS_Setting.
*
@ -237,6 +262,7 @@ class Test_WP_Customize_Custom_CSS_Setting extends WP_UnitTestCase {
'post_status' => 'publish',
'post_type' => 'custom_css',
) );
remove_theme_mod( 'custom_css_post_id' );
$this->assertEquals( '/*custom*//*filtered*/', $this->setting->value() );
$this->wp_customize->set_post_value( $this->setting->id, '/*overridden*/' );