Question

我想知道在1小时，1到2小时和超过2小时内预约的次数。

/* sample redux fields = array(
 array(
        'id'       => 'theme-primary-color',
        'type'     => 'color',
        'title'    => __( 'Add Primary Color', 'theme-redux' ),
        'subtitle' => __( 'Add the theme primary color', 'theme-redux' ),
        'default'  => '#FFFFFF',
        'validate' => 'color',
        'compiler' => 'true',
    ))
*/

add_filter('redux/options/' . $opt_name . '/compiler', 'compiler_action', 10,3);

function compiler_action( $options, $css, $changed_values ) {
  global $wp_filesystem, $kavabase_options;

  $filename = get_template_directory() . '/assets/stylesheets/theme-style.css';

  if( empty( $wp_filesystem ) ) {
    require_once( ABSPATH .'/wp-admin/includes/file.php' );
    WP_Filesystem();
  }

  if( $wp_filesystem ) {
    require_once ( dirname(__FILE__ ) ."/plugins/scssphp/scss.inc.php" );

    //use Leafo\ScssPhp\Compiler; at the beginning of the file

    $scss = new Compiler();

    $scss->setImportPaths(  get_template_directory(). "/inc/foundation-sites/" );
   //$scss->setFormatter( "Leafo\ScssPhp\Formatter\Compressed" );

    $css =  $scss->compile('@import "foundationdependencies.scss"; $theme-primary-color: '.$options['theme-primary-color'].';
      @import "foundationsettings.scss";
      @import "foundationutil.scss";@import "foundation.scss"');

    //var_dump( $scss->getParsedFiles() );

    $wp_filesystem->put_contents(
      $filename,
      $css,
      FS_CHMOD_FILE // predefined mode settings for WP files
    );
  }
}

count方法返回以下异常：

Appointment
.select("id, EXTRACT(MINUTE FROM (check_out_at - check_in_at)) as minutes")
.group("id, minutes")
.having("count('minutes') < 60")
.count

Answer 1

假设id是主键，您既不需要group by也不需要having。您只需执行此操作即可获得1小时以内的约会计数：

Appointment.where("(EXTRACT(epoch FROM (check_out_at - check_in_at))) < 3600").count

要计算按小时分组的所有约会，您可以执行以下操作：

Appointment.group("Floor(Extract(epoch from (check_out_at - check_in_at))/3600)").count

输出如下：

{0.0=>1, 2.0=>31, 3.0=>11}

意味着0-1小时之间预约1次，31小时之间约2-3小时等等。

Rails选择，分组，拥有，计数

1 个答案: