Como evitar a execução da consulta padrão, preservando a capacidade de usar WP_Query no modelo?

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8

PROBLEMA: Estou tentando impedir a execução da consulta padrão do WordPress para o modelo de categoria personalizada. Eu encontrei uma solução possível, mas parece impedir a execução de todas as consultas post: 

function _cancel_query( $query ) {
    if ( !is_admin() && !is_feed() && is_search() ) {
        $query = false;
    }
    return $query;
}
add_action( 'posts_request', '_cancel_query' );

Fonte: enlace

'@ query- > is_main_query ()' não funciona com a ação 'posts_request'. Existe alguma maneira elegante de evitar SOMENTE a consulta padrão do WordPress, permitindo que meu código manipule as postagens, sem executar operações inúteis?

POR QUE: eu tenho que receber postagens em destaque, então fixei a quantidade de postagens normais sem conteúdo duplicado, o que implica que a consulta do post depende dos resultados da consulta, porque não há garantia de que post consulta eu encontrar posts suficientes suficientes para preencher a caixa de destaque. E depois de tudo isso eu vou ter que adicionar paginação AJAX - ainda sem conteúdo duplicado.

EDIT # 2: Se você estiver tentando executar WP_Query em 'pre_get_posts' como Rarst sugeriu ( Como evitar a execução da consulta padrão, preservando a capacidade de usar WP_Query no modelo :

"pre_get_posts é executado antes da configuração de WP_Query. Algumas tags de modelo e funções condicionais que dependem de WP_Query não funcionam. Por exemplo, is_front_page () não funcionará, embora is_home () funcione. Nesses casos, você precisará para trabalhar diretamente com a consulta vars, que são passadas para o gancho pre_get_posts como um argumento ($ query em exemplos nesta página). "

Fonte: enlace

WP_Query será inicializado nesta fase, antes da consulta principal, e para evitar resultados como este (check out log) você tem que envolvê-lo: 

if ($query->is_main_query()) {
    $args = array();
    $query = new WP_Query( $args );
}

LOG: 

[30-Apr-2013 17:07:12 UTC] PHP Fatal error:  Maximum function nesting level of '100' reached, aborting! in C:\Users\serwis\Dropbox\www\XYZ\wp-includes\functions.php on line 2769

[30-Apr-2013 17:07:12 UTC] PHP Stack trace:

[30-Apr-2013 17:07:12 UTC] PHP   1. {main}() C:\Users\serwis\Dropbox\www\XYZ\index.php:0

[30-Apr-2013 17:07:12 UTC] PHP   2. require() C:\Users\serwis\Dropbox\www\XYZ\index.php:17

[30-Apr-2013 17:07:12 UTC] PHP   3. wp() C:\Users\serwis\Dropbox\www\XYZ\wp-blog-header.php:14

[30-Apr-2013 17:07:12 UTC] PHP   4. WP->main() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\functions.php:779

[30-Apr-2013 17:07:12 UTC] PHP   5. WP->query_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\class-wp.php:549

[30-Apr-2013 17:07:12 UTC] PHP   6. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\class-wp.php:485

[30-Apr-2013 17:07:12 UTC] PHP   7. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP   8. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP   9. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  10. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  11. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  12. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  13. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  14. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  15. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  16. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  17. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  18. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  19. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  20. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  21. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  22. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  23. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  24. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  25. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  26. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  27. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  28. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  29. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  30. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  31. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  32. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  33. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  34. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  35. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  36. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  37. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  38. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  39. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  40. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  41. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  42. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  43. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  44. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  45. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  46. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  47. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  48. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  49. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  50. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  51. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  52. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  53. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  54. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  55. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  56. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  57. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  58. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  59. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  60. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  61. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  62. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  63. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  64. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  65. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  66. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  67. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  68. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  69. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  70. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  71. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  72. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  73. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  74. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  75. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  76. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  77. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  78. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  79. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  80. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  81. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  82. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  83. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  84. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  85. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  86. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  87. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  88. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  89. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  90. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  91. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  92. do_action_ref_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1924

[30-Apr-2013 17:07:12 UTC] PHP  93. call_user_func_array() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  94. gs_pre_get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\plugin.php:487

[30-Apr-2013 17:07:12 UTC] PHP  95. WP_Query->__construct() C:\Users\serwis\Dropbox\www\XYZ\wp-content\themes\roots-XYZ\lib\custom.php:14

[30-Apr-2013 17:07:12 UTC] PHP  96. WP_Query->query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:3059

[30-Apr-2013 17:07:12 UTC] PHP  97. WP_Query->get_posts() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:2972

[30-Apr-2013 17:07:12 UTC] PHP  98. WP_Query->parse_query() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1922

[30-Apr-2013 17:07:12 UTC] PHP  99. absint() C:\Users\serwis\Dropbox\www\XYZ\wp-includes\query.php:1442
    
por Gniewomir Świechowski 30.04.2013 / 16:49

2 respostas

5

O cancelamento completo da consulta principal é uma loucura de alto nível, que envolve a subclasse wp class.

Eu gostaria de:

  1. Conecte-se a pre_get_posts com is_main_query() check
  2. Execute a consulta em destaque (ainda dentro do gancho) e armazene os resultados em algum lugar
  3. Use esses resultados para definir postagens excluídas na consulta principal
por Rarst 30.04.2013 / 17:28
8

Eu sei que pode demorar um pouco para responder, mas me deparei com um problema semelhante ao fazer meu projeto de teste. Aqui está como eu resolvi isso. 

/* apply this filter only on relevant to you pages */
function mb_bail_main_wp_query( $sql, WP_Query $wpQuery ) {
    if ( $wpQuery->is_main_query() ) {
        /* prevent SELECT FOUND_ROWS() query*/
        $wpQuery->query_vars['no_found_rows'] = true;

        /* prevent post term and meta cache update queries */
        $wpQuery->query_vars['cache_results'] = false;

        return false;
    }
    return $sql;
}
add_filter( 'posts_request', 'mb_bail_main_wp_query', 10, 2 );

@UPDATE:

Código alterado para usar a função normal em vez de uma função anônima e fez com que o código retornasse 'false' em vez de 'SELECT 0 AS ID', já que causava o retorno de um objeto WP_Post vazio. Retornar "false" faz com que $ wpdb- > get_results () seja liberado antecipadamente para que nenhuma consulta seja feita.

    
por Mateusz Brandys 23.05.2014 / 20:42

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