{"id":4915,"date":"2020-12-10T11:30:59","date_gmt":"2020-12-10T10:30:59","guid":{"rendered":"http:\/\/gpmfactory.com\/?p=4915"},"modified":"2020-12-10T11:34:05","modified_gmt":"2020-12-10T10:34:05","slug":"ajout-dun-lien-oracle-apex-dans-un-article-facebook","status":"publish","type":"post","link":"https:\/\/gpmfactory.com\/index.php\/2020\/12\/10\/ajout-dun-lien-oracle-apex-dans-un-article-facebook\/","title":{"rendered":"Ajout d’un lien Oracle APEX dans un article Facebook"},"content":{"rendered":"\n

Lors de la r\u00e9daction d’un article Facebook, l’ajout d’un lien vers une application Oracle APEX peut entrainer l’affichage d’un raccourci d\u00e9fectueux. Un examen avec le d\u00e9buggeur de Facebook<\/a> indique alors qu’il y a trop de redirections et que les metadata <\/em>Open Graph n’ont pas pu \u00eatre r\u00e9cup\u00e9r\u00e9es et ont donc \u00e9t\u00e9 fix\u00e9es par d\u00e9faut.<\/p>\n\n\n\n

Une solution de contournement consiste \u00e0 cr\u00e9er un proxy dont le r\u00f4le est, soit de fournir les metadata <\/em>attendues par Facebook, soit de rediriger vers l’application APEX.<\/p>\n\n\n\n

On peut r\u00e9aliser ce proxy sous forme de module REST sous ORDS tel que ci-dessous:<\/p>\n\n\n

select 'text\/html', '
<html><head>
<meta property=\"og:locale\" content=\"fr_fr\" \/>
<meta property=\"og:site_name\" content=\"MySitename\" \/>
<meta property=\"og:title\" content=\"mytitle\" \/>
<meta property=\"og:description\" content=\"myDescription\" \/>
<meta property=\"og:url\" content=\"https:\/\/xx.oraclecloudapps.com\/ords\/r\/APP_APEX\/\" \/>
<meta property=\"og:image\" content=\"https:\/\/xxx\/icon-256x256.png\" \/>
<meta property=\"og:type\" content=\"website\" \/>' ||
decode(substr(:agent,1,19)<\/strong>,
'facebookexternalhit',
'',
'<meta http-equiv=\"refresh\" content=\"0; URL=https:\/\/xx.oraclecloudapps.com\/ords\/r\/APP_APEX\/\" \/>'
)
||
'<\/head>
<body>
<\/body>
<\/html>' 
from dual<\/pre>\n
L’astuce consiste \u00e0 analyser le user-agent envoy\u00e9 par Facebook qui est:<\/p>\n
facebookexternalhit\/1.1 (+http:\/\/www.facebook.com\/externalhit_uatext.php)<\/p>\n
Si ce n’est pas Facebook, on effectue une redirection vers l’application APEX.<\/p>\n
Lors de l’ajout du lien dans l’article FB, on pr\u00e9cisera le endpoint<\/em> de la m\u00e9thode GET qu’on vient d\u00e9crire \u00e0 la place de l’url de l’application APEX.<\/p>\n
\u00a0<\/p>","protected":false},"excerpt":{"rendered":"
Lors de la r\u00e9daction d’un article Facebook, l’ajout d’un lien vers une application Oracle APEX peut entrainer l’affichage d’un raccourci d\u00e9fectueux. Un examen avec…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"ppma_author":[150],"class_list":["post-4915","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"yoast_head":"\nAjout d'un lien Oracle APEX dans un article Facebook - GPM Factory<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gpmfactory.com\/index.php\/2020\/12\/10\/ajout-dun-lien-oracle-apex-dans-un-article-facebook\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ajout d'un lien Oracle APEX dans un article Facebook - GPM Factory\" \/>\n<meta property=\"og:description\" content=\"Lors de la r\u00e9daction d’un article Facebook, l’ajout d’un lien vers une application Oracle APEX peut entrainer l’affichage d’un raccourci d\u00e9fectueux. 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