{"id":3022,"date":"2021-08-09T02:58:13","date_gmt":"2021-08-09T00:58:13","guid":{"rendered":"https:\/\/vielhuber.de\/?p=3022"},"modified":"2021-08-09T15:45:35","modified_gmt":"2021-08-09T13:45:35","slug":"quick-tip-wp_query-mehrzeilige-felder","status":"publish","type":"post","link":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/","title":{"rendered":"Quick Tip: WP_Query &#038; mehrzeilige Felder"},"content":{"rendered":"\n<p>Mit Hilfe des Attributs <a href=\"https:\/\/developer.wordpress.org\/reference\/classes\/wp_query\/#custom-field-post-meta-parameters\" target=\"_blank\" rel=\"noreferrer noopener\">meta_query<\/a> in der m\u00e4chtigen WordPress-Klasse <a href=\"https:\/\/developer.wordpress.org\/reference\/classes\/wp_query\/\" target=\"_blank\" rel=\"noreferrer noopener\">WP_Query<\/a> lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben. Hat man ein mehrzeiliges Meta-Feld (z.B. mit Hilfe von <a href=\"https:\/\/www.advancedcustomfields.com\/resources\/textarea\/\" target=\"_blank\" rel=\"noreferrer noopener\">Advanced Custom Fields<\/a>) angelegt und will nur Posts finden, die einen bestimmten Wert in diesem durch Zeilenumbr\u00fcche getrennten Feld enth\u00e4lt, empfiehlt sich die <a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/regexp.html\" target=\"_blank\" rel=\"noreferrer noopener\">REGEX-Welt<\/a> von MySQL.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>Folgender Aufruf findet alle Posts, die im Feld <strong>foo<\/strong> irgendwo in einer Zeile den Wert <strong>bar<\/strong> haben:<\/p>\n\n\n\n<p class=\"githubgist\" data-gist-file=\"script.php\">d6a80606f7846cba392a561bfdecf2b7<\/p>\n\n\n\n<p>Hier wird sichergestellt, dass keine falschen Teilstrings gefunden werden und Zeilenumbr\u00fcche plattform\u00fcbergreifend funktionieren. Wichtig auch: Der Wert des Attributs <strong>value<\/strong> muss zwingend in doppelten Anf\u00fchrungszeichen stehen, sonst escapet WordPress die Backslashes (keine Sorge: <a href=\"https:\/\/github.com\/prettier\/plugin-php\" target=\"_blank\" rel=\"noreferrer noopener\">Prettier<\/a> ber\u00fccksichtigt das dauerhaft). Dasselbe Verfahren l\u00e4sst sich auch f\u00fcr andere Zwecke verwenden:  So ersetzt man beispielsweise im obigen Code <strong>\"\\r\\n|\\r|\\n\"<\/strong> durch \"<strong>;\"<\/strong>, wenn es sich um komma- (statt zeilen-) getrennte Werte innerhalb eines Textfelds handelt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben. Hat man ein mehrzeiliges Meta-Feld (z.B. mit Hilfe von Advanced Custom Fields) angelegt und will nur Posts finden, die einen bestimmten Wert in diesem durch Zeilenumbr\u00fcche getrennten Feld enth\u00e4lt, empfiehlt sich die REGEX-Welt von [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"gtbabel_prevent_lngs":"","gtbabel_alt_lng":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-3022","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-blog"},"acf":[],"yoast_head":"<title>Quick Tip: WP_Query &amp; mehrzeilige Felder &#060; Vielhuber David<\/title>\n<meta name=\"description\" content=\"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern ha...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quick Tip: WP_Query &amp; mehrzeilige Felder &#060; Vielhuber David\" \/>\n<meta property=\"og:description\" content=\"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/\" \/>\n<meta property=\"og:site_name\" content=\"Vielhuber David\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-09T00:58:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-08-09T13:45:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"552\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"David\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@vielhuber\" \/>\n<meta name=\"twitter:site\" content=\"@vielhuber\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"David\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/\"},\"author\":{\"name\":\"David\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#\\\/schema\\\/person\\\/64d4ff14713d413ea4d9b210d0c2c6ef\"},\"headline\":\"Quick Tip: WP_Query &#038; mehrzeilige Felder\",\"datePublished\":\"2021-08-09T00:58:13+00:00\",\"dateModified\":\"2021-08-09T13:45:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/\"},\"wordCount\":169,\"publisher\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#\\\/schema\\\/person\\\/64d4ff14713d413ea4d9b210d0c2c6ef\"},\"articleSection\":[\"Blog\"],\"inLanguage\":\"de\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/\",\"url\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/\",\"name\":\"Quick Tip: WP_Query & mehrzeilige Felder &#060; Vielhuber David\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#website\"},\"datePublished\":\"2021-08-09T00:58:13+00:00\",\"dateModified\":\"2021-08-09T13:45:35+00:00\",\"description\":\"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/blog\\\/quick-tip-wp_query-mehrzeilige-felder\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/vielhuber.de\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Quick Tip: WP_Query &#038; mehrzeilige Felder\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#website\",\"url\":\"https:\\\/\\\/vielhuber.de\\\/\",\"name\":\"Vielhuber David\",\"description\":\"Full-Stack Developer\",\"publisher\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#\\\/schema\\\/person\\\/64d4ff14713d413ea4d9b210d0c2c6ef\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/vielhuber.de\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/vielhuber.de\\\/#\\\/schema\\\/person\\\/64d4ff14713d413ea4d9b210d0c2c6ef\",\"name\":\"David\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/vielhuber.de\\\/wp-content\\\/uploads\\\/about.jpg\",\"url\":\"https:\\\/\\\/vielhuber.de\\\/wp-content\\\/uploads\\\/about.jpg\",\"contentUrl\":\"https:\\\/\\\/vielhuber.de\\\/wp-content\\\/uploads\\\/about.jpg\",\"width\":700,\"height\":552,\"caption\":\"David\"},\"logo\":{\"@id\":\"https:\\\/\\\/vielhuber.de\\\/wp-content\\\/uploads\\\/about.jpg\"},\"sameAs\":[\"https:\\\/\\\/x.com\\\/vielhuber\"]}]}<\/script>","yoast_head_json":{"title":"Quick Tip: WP_Query & mehrzeilige Felder &#060; Vielhuber David","description":"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern ha...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/","og_locale":"de_DE","og_type":"article","og_title":"Quick Tip: WP_Query & mehrzeilige Felder &#060; Vielhuber David","og_description":"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben.","og_url":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/","og_site_name":"Vielhuber David","article_published_time":"2021-08-09T00:58:13+00:00","article_modified_time":"2021-08-09T13:45:35+00:00","og_image":[{"width":700,"height":552,"url":"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg","type":"image\/jpeg"}],"author":"David","twitter_card":"summary_large_image","twitter_creator":"@vielhuber","twitter_site":"@vielhuber","twitter_misc":{"Verfasst von":"David","Gesch\u00e4tzte Lesezeit":"1\u00a0Minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/#article","isPartOf":{"@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/"},"author":{"name":"David","@id":"https:\/\/vielhuber.de\/#\/schema\/person\/64d4ff14713d413ea4d9b210d0c2c6ef"},"headline":"Quick Tip: WP_Query &#038; mehrzeilige Felder","datePublished":"2021-08-09T00:58:13+00:00","dateModified":"2021-08-09T13:45:35+00:00","mainEntityOfPage":{"@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/"},"wordCount":169,"publisher":{"@id":"https:\/\/vielhuber.de\/#\/schema\/person\/64d4ff14713d413ea4d9b210d0c2c6ef"},"articleSection":["Blog"],"inLanguage":"de"},{"@type":"WebPage","@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/","url":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/","name":"Quick Tip: WP_Query & mehrzeilige Felder &#060; Vielhuber David","isPartOf":{"@id":"https:\/\/vielhuber.de\/#website"},"datePublished":"2021-08-09T00:58:13+00:00","dateModified":"2021-08-09T13:45:35+00:00","description":"Mit Hilfe des Attributs meta_query in der m\u00e4chtigen WordPress-Klasse WP_Query lassen sich Posts filtern, die bestimmte Werte in Ihren Meta-Feldern haben.","breadcrumb":{"@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/vielhuber.de\/blog\/quick-tip-wp_query-mehrzeilige-felder\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/vielhuber.de\/"},{"@type":"ListItem","position":2,"name":"Quick Tip: WP_Query &#038; mehrzeilige Felder"}]},{"@type":"WebSite","@id":"https:\/\/vielhuber.de\/#website","url":"https:\/\/vielhuber.de\/","name":"Vielhuber David","description":"Full-Stack Developer","publisher":{"@id":"https:\/\/vielhuber.de\/#\/schema\/person\/64d4ff14713d413ea4d9b210d0c2c6ef"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/vielhuber.de\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":["Person","Organization"],"@id":"https:\/\/vielhuber.de\/#\/schema\/person\/64d4ff14713d413ea4d9b210d0c2c6ef","name":"David","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg","url":"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg","contentUrl":"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg","width":700,"height":552,"caption":"David"},"logo":{"@id":"https:\/\/vielhuber.de\/wp-content\/uploads\/about.jpg"},"sameAs":["https:\/\/x.com\/vielhuber"]}]}},"_links":{"self":[{"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/posts\/3022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/comments?post=3022"}],"version-history":[{"count":7,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/posts\/3022\/revisions"}],"predecessor-version":[{"id":3086,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/posts\/3022\/revisions\/3086"}],"wp:attachment":[{"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/media?parent=3022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/categories?post=3022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vielhuber.de\/en\/wp-json\/wp\/v2\/tags?post=3022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}