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Respect the `compare` operator value in `meta_query` when `value` evaluates to `null`. Adds Unit Test. 

Props bradyvercher, gradyetc.
Fixes #22967.



git-svn-id: https://develop.svn.wordpress.org/trunk@26053 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Scott Taylor 2013-11-08 22:51:03 +00:00
parent 0670cf7cc4
commit cc19bb3a57
2 changed files with 18 additions and 1 deletions
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5
src/wp-includes/meta.php
View File

@ -753,7 +753,7 @@ class WP_Meta_Query {
// Split out the meta_key only queries (we can only do this for OR)
if ( 'OR' == $this->relation ) {
foreach ( $this->queries as $k => $q ) {
if ( ! isset( $q['value'] ) && ! empty( $q['key'] ) )
if ( ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
$key_only_queries[$k] = $q;
else
$queries[$k] = $q;
@ -774,6 +774,9 @@ class WP_Meta_Query {
$meta_key = isset( $q['key'] ) ? trim( $q['key'] ) : '';
$meta_type = $this->get_cast_for_type( isset( $q['type'] ) ? $q['type'] : '' );
if ( array_key_exists( 'value', $q ) && is_null( $q['value'] ) )
$q['value'] = '';
$meta_value = isset( $q['value'] ) ? $q['value'] : null;
if ( isset( $q['compare'] ) )

14
tests/phpunit/tests/meta/query.php
View File

@ -105,4 +105,18 @@ class Tests_Meta_Query extends WP_UnitTestCase {
$this->assertEquals( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_key = 'my_third_key'" ) );
}
/**
* @ticket 22967
*/
function test_null_value_sql() {
global $wpdb;
$query = new WP_Meta_Query( array(
array( 'key' => 'abc', 'value' => null, 'compare' => '=' )
) );
$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$this->assertEquals( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) = '')" ) );
}
}