{"id":92,"date":"2023-02-14T00:00:00","date_gmt":"2023-02-13T23:00:00","guid":{"rendered":"https:\/\/helloblog.io\/cs\/lepsi-debugging-ve-wordpressu-s-acornem\/"},"modified":"2026-01-20T06:32:58","modified_gmt":"2026-01-20T05:32:58","slug":"lepsi-debugging-ve-wordpressu-s-acornem","status":"publish","type":"post","link":"https:\/\/helloblog.io\/cs\/lepsi-debugging-ve-wordpressu-s-acornem\/","title":{"rendered":"Lep\u0161\u00ed debugging ve WordPressu s Acornem: \u010diteln\u011bj\u0161\u00ed chyby ne\u017e hol\u00e9 WP_DEBUG"},"content":{"rendered":"\n<p>WordPress m\u00e1 pro v\u00fdvoj\u00e1\u0159sk\u00e9 prost\u0159ed\u00ed jednoduch\u00fd p\u0159ep\u00edna\u010d pro lad\u011bn\u00ed: konstanta <code>WP_DEBUG<\/code>. Jakmile ji zapne\u0161, za\u010dne\u0161 okam\u017eit\u011b chytat notice, warningy a v\u00fdjimky, kter\u00e9 by jinak ti\u0161e proplouvaly produkc\u00ed. Pro lok\u00e1ln\u00ed v\u00fdvoj (a obecn\u011b pro dev prost\u0159ed\u00ed) by <code>WP_DEBUG<\/code> m\u011bl b\u00fdt prakticky v\u017edy zapnut\u00fd \u2014 zejm\u00e9na pokud d\u011bl\u00e1\u0161 pluginy nebo \u0161ablony a chce\u0161 vid\u011bt probl\u00e9my co nejd\u0159\u00edv.<\/p>\n\n\n\n<p>Probl\u00e9m je, \u017ee defaultn\u00ed v\u00fdstup WordPressu nen\u00ed zrovna ergonomick\u00fd. Chyby se typicky vykresl\u00ed p\u0159\u00edmo do HTML str\u00e1nky a v\u00fdsledkem b\u00fdv\u00e1 blok textu bez kontextu, bez p\u011bkn\u00e9ho stack trace a bez n\u00e1stroj\u016f, kter\u00e9 jsme zvykl\u00ed pou\u017e\u00edvat jinde.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co p\u0159esn\u011b d\u011bl\u00e1 WordPress v re\u017eimu WP_DEBUG<\/h2>\n\n\n\n<p>Kdy\u017e je <code>WP_DEBUG<\/code> aktivn\u00ed, WordPress za\u010dne hl\u00e1sit PHP notice a dal\u0161\u00ed chyby. V kombinaci s <code>WP_DEBUG_DISPLAY<\/code> se tyto informace obvykle vyp\u00ed\u0161ou p\u0159\u00edmo na obrazovku. Je to po\u0159\u00e1d lep\u0161\u00ed ne\u017e nic \u2014 v ekosyst\u00e9mu WordPressu je a\u017e p\u0159ekvapiv\u011b b\u011b\u017en\u00e9, \u017ee i roz\u0161\u00ed\u0159en\u00e9 pluginy a \u0161ablony generuj\u00ed notice, kter\u00e9 pak komplikuj\u00ed v\u00fdvoj, testov\u00e1n\u00ed i nasazen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bedrock to m\u00e1 v devu typicky vy\u0159e\u0161en\u00e9 u\u017e dop\u0159edu<\/h2>\n\n\n\n<p>Pokud stav\u00ed\u0161 projekty na Bedrocku (modern\u00ed WordPress boilerplate postaven\u00fd na Composeru), <code>WP_DEBUG<\/code> b\u00fdv\u00e1 v development prost\u0159ed\u00ed zapnut\u00fd u\u017e v z\u00e1kladu. Bedrock to \u0159e\u0161\u00ed p\u0159es environment konfigurace, tak\u017ee se nemus\u00ed\u0161 b\u00e1t, \u017ee si omylem p\u0159enese\u0161 debug nastaven\u00ed do produkce.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kde Acorn posouv\u00e1 WP_DEBUG o \u00farove\u0148 v\u00fd\u0161<\/h2>\n\n\n\n<p>Acorn je runtime a sada integrac\u00ed, kter\u00e1 do WordPressu p\u0159in\u00e1\u0161\u00ed \u010d\u00e1st pohodl\u00ed z Laravel sv\u011bta (nap\u0159\u00edklad helpery a modern\u011bj\u0161\u00ed v\u00fdvoj\u00e1\u0159sk\u00fd z\u00e1\u017eitek). Jedna z praktick\u00fdch v\u011bc\u00ed: kdy\u017e m\u00e1\u0161 zapnut\u00e9 <code>WP_DEBUG<\/code> a z\u00e1rove\u0148 <code>WP_DEBUG_DISPLAY<\/code>, Acorn um\u00ed v\u00fdrazn\u011b vylep\u0161it podobu a pou\u017eitelnost chybov\u00fdch str\u00e1nek.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00fdchoz\u00ed chybov\u00e1 str\u00e1nka v Acornu: Symfony exception handler<\/h3>\n\n\n\n<p>V z\u00e1kladn\u00ed konfiguraci Acorn pou\u017e\u00edv\u00e1 handler ze Symfony. V praxi to znamen\u00e1 \u010diteln\u011bj\u0161\u00ed v\u00fdpis v\u00fdjimek, lep\u0161\u00ed pr\u00e1ci se stack trace a celkov\u011b strukturovan\u011bj\u0161\u00ed zobrazen\u00ed probl\u00e9mu ne\u017e hol\u00fd WordPress v\u00fdpis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ignition: Laravel-style error page i ve WordPressu (Acorn v3+) <\/h3>\n\n\n\n<p>Pokud m\u00e1\u0161 zku\u0161enost s Laravelem, pravd\u011bpodobn\u011b zn\u00e1\u0161 Ignition \u2014 v\u00fdchoz\u00ed error page v Laravelu (od Laravel v9). S Acornem v3 p\u0159i\u0161la podpora routingu ve stylu Laravelu, a t\u00edm p\u00e1dem i mo\u017enost pou\u017e\u00edvat Ignition p\u0159\u00edmo ve WordPress projektu b\u011b\u017e\u00edc\u00edm na Acornu. V\u00fdsledkem je v\u00fdrazn\u011b lep\u0161\u00ed ladic\u00ed workflow: p\u0159ehledn\u00e9 rozhran\u00ed, kontext k chyb\u011b a rychlej\u0161\u00ed orientace v tom, co se stalo.<\/p>\n\n\n\n<p>Ignition se instaluje jako dev z\u00e1vislost p\u0159es Composer z adres\u00e1\u0159e, kde je nainstalovan\u00fd Acorn:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>composer require spatie\/laravel-ignition --dev\n\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color:#24292e;color:#e1e4e8\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color:#B392F0\">composer<\/span><span style=\"color:#9ECBFF\"> require<\/span><span style=\"color:#9ECBFF\"> spatie\/laravel-ignition<\/span><span style=\"color:#79B8FF\"> --dev<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<div class=\"wp-block-group callout callout-info is-style-info is-layout-flow wp-block-group-is-layout-flow\" style=\"border-width:1px;border-radius:8px;padding-top:1rem;padding-right:1.5rem;padding-bottom:1rem;padding-left:1.5rem\">\n\n<h4 class=\"wp-block-heading callout-title\">Kdy to d\u00e1v\u00e1 smysl<\/h4>\n\n\n<p>Ignition ocen\u00ed\u0161 hlavn\u011b p\u0159i v\u00fdvoji custom \u0161ablon, integrac\u00ed a slo\u017eit\u011bj\u0161\u00ed business logiky, kde pot\u0159ebuje\u0161 rychle \u010d\u00edst stack trace a proklik\u00e1vat se k m\u00edstu chyby.<\/p>\n\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Whoops: historick\u00e1 volba pro Acorn v2<\/h3>\n\n\n\n<p>D\u0159\u00edv (p\u0159ed Acorn v3) se pro lep\u0161\u00ed chybov\u00e9 str\u00e1nky \u010dasto doporu\u010doval bal\u00ed\u010dek whoops. Pokud jsi st\u00e1le na Acorn v2, whoops je po\u0159\u00e1d cesta, jak se dostat k p\u0159\u00edv\u011btiv\u011bj\u0161\u00edmu zobrazen\u00ed chyb ne\u017e p\u0159es z\u00e1kladn\u00ed Symfony str\u00e1nku. Sou\u010dasn\u011b ale d\u00e1v\u00e1 smysl zv\u00e1\u017eit upgrade na Acorn v3, proto\u017ee Ignition je v tomhle ohledu velmi p\u0159\u00edjemn\u00fd standard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nejede\u0161 na Acornu? I tak se d\u00e1 WP debugging zp\u0159\u00edjemnit<\/h2>\n\n\n\n<p>Acorn nen\u00ed jedin\u00e1 mo\u017enost, jak zlep\u0161it lad\u011bn\u00ed ve WordPressu. Pokud stav\u00ed\u0161 klasick\u00fd WordPress bez Acornu, existuj\u00ed pluginy, kter\u00e9 ti pom\u016f\u017eou s diagnostikou a viditelnost\u00ed probl\u00e9m\u016f v b\u011bhu aplikace \u2014 typicky nad r\u00e1mec toho, co poskytne samotn\u00e9 <code>WP_DEBUG<\/code>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Query Monitor \u2013 velmi u\u017eite\u010dn\u00fd n\u00e1stroj do lok\u00e1ln\u00edho prost\u0159ed\u00ed (dotazy do DB, hooky, HTTP requesty, chyby a dal\u0161\u00ed diagnostika).<\/li>\n\n\n<li>Debug Bar \u2013 jednodu\u0161\u0161\u00ed alternativa pro z\u00e1kladn\u00ed debug panely.<\/li>\n\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Shrnut\u00ed: co si z toho odn\u00e9st<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n\n<li><code>WP_DEBUG<\/code> v dev prost\u0159ed\u00ed zap\u00ednej pravideln\u011b \u2013 notice a chyby chce\u0161 vid\u011bt hned, ne a\u017e po nasazen\u00ed.<\/li>\n\n\n<li>Defaultn\u00ed v\u00fdstup WordPressu je funk\u010dn\u00ed, ale m\u00e1lo \u010diteln\u00fd a \u010dasto t\u011b brzd\u00ed.<\/li>\n\n\n<li>Acorn dok\u00e1\u017ee chybov\u00e9 str\u00e1nky v\u00fdrazn\u011b zp\u0159ehlednit (minim\u00e1ln\u011b p\u0159es Symfony handler).<\/li>\n\n\n<li>Na Acorn v3 d\u00e1v\u00e1 velk\u00fd smysl Ignition: <code>composer require spatie\/laravel-ignition --dev<\/code>.<\/li>\n\n\n<li>Mimo Acorn se vyplat\u00ed s\u00e1hnout po Query Monitoru nebo Debug Baru pro lep\u0161\u00ed diagnostiku b\u011bhu WordPressu.<\/li>\n\n<\/ol>\n\n\n<div class=\"references-section\">\n                <h2>Reference \/ Zdroje<\/h2>\n                <ul class=\"references-list\"><li><a href=\"https:\/\/roots.io\/better-wordpress-debugging-with-acorn\/\" target=\"_blank\" rel=\"noopener noreferrer\">Better WordPress Debugging with Acorn<\/a><\/li><li><a href=\"https:\/\/roots.io\/bedrock\/\" target=\"_blank\" rel=\"noopener noreferrer\">Bedrock<\/a><\/li><li><a href=\"https:\/\/roots.io\/acorn\/docs\/error-handling\/#ignition\" target=\"_blank\" rel=\"noopener noreferrer\">Acorn documentation \u2013 Error handling (Ignition)<\/a><\/li><li><a href=\"https:\/\/github.com\/filp\/whoops\" target=\"_blank\" rel=\"noopener noreferrer\">whoops (filp\/whoops)<\/a><\/li><li><a href=\"https:\/\/querymonitor.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Query Monitor<\/a><\/li><li><a href=\"https:\/\/wordpress.org\/plugins\/debug-bar\/\" target=\"_blank\" rel=\"noopener noreferrer\">Debug Bar<\/a><\/li><\/ul>\n            <\/div>","protected":false},"excerpt":{"rendered":"<p>WP_DEBUG ti sice uk\u00e1\u017ee notice a fat\u00e1ly hned na str\u00e1nce, ale ve v\u00fdchoz\u00edm stavu je to \u010dasto nep\u0159ehledn\u00fd chaos. Acorn um\u00ed z WordPressu ud\u011blat prost\u0159ed\u00ed, kde chyby vypadaj\u00ed a chovaj\u00ed se mnohem v\u00edc jako v modern\u00edch PHP aplikac\u00edch.<\/p>\n","protected":false},"author":33,"featured_media":91,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[4,76,7,79,10],"class_list":["post-92","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ekosystem-wordpress","tag-acorn","tag-bedrock","tag-composer","tag-debugging","tag-wordpress"],"_links":{"self":[{"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/posts\/92","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/users\/33"}],"replies":[{"embeddable":true,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/comments?post=92"}],"version-history":[{"count":1,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/posts\/92\/revisions"}],"predecessor-version":[{"id":106,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/posts\/92\/revisions\/106"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/media\/91"}],"wp:attachment":[{"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/media?parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/categories?post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helloblog.io\/cs\/wp-json\/wp\/v2\/tags?post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}