{"id":3179,"date":"2024-11-05T08:25:20","date_gmt":"2024-11-05T07:25:20","guid":{"rendered":"https:\/\/wypo.io\/documentations\/formmaster\/exemples\/ajout-champ-personnalise-selectionner-article-blog\/"},"modified":"2024-11-05T08:54:14","modified_gmt":"2024-11-05T07:54:14","slug":"add-custom-field-selecting-blog-post","status":"publish","type":"wypo_documentations","link":"https:\/\/wypo.io\/en\/documentations\/formmaster\/exemples\/add-custom-field-selecting-blog-post\/","title":{"rendered":"Add a custom field for selecting a blog post"},"content":{"rendered":"
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The following code creates a custom post selection field for the WP Form Master plugin, allowing users to select a post from a drop-down list in a form. This field also checks whether a valid selection has been made (if required), saves the ID or title of the selected post, and allows it to be added to forms using a shortcode.<\/p>\n\n\n\n

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\n PHP <\/div>\n <\/header>\n <?php\nif (!defined('ABSPATH'))\n exit;\n\nclass WP_FormMaster_AddCustomField_PostSelect {\n private $fieldname = "select-post";\n private $isRequired = true;\n\n public function __construct() {\n add_filter("allowed_block_types_all", array($this, "setBlocks"), 11, 2);\n add_shortcode("wpformmaster-form-post-select", [$this, "postSelectCallback"]);\n add_filter("wpfmaster_form_extractfields", array($this, "extractFields"), 10, 4);\n add_filter("wpformmaster_field_value", array($this, "getFieldValue"), 10, 7);\n add_filter("wpfmaster_form_validate_field", array($this, "addRequiredError"), 10, 8);\n }\n\n public function addRequiredError($error, $formID, $key, $type, $field, $errors, $posts, $files) {\n if (!$error) {\n if ($key && $key === $this->fieldname) {\n if ($this->isRequired) {\n if (isset($posts[$key])) {\n $post = get_post($posts[$key]);\n if (!$post || $post->post_type != "post") {\n $error = __("Please select an item", "my-domain");\n }\n }\n }\n }\n }\n return $error;\n }\n\n public function getFieldValue($value, $key, $type, $attrs, $posts, $files, $getInterpretValue) {\n if ($key && $key === $this->fieldname) {\n if ($getInterpretValue) {\n if (isset($posts[$key]) && $posts[$key]) {\n $post = get_post($posts[$key]);\n if ($post) {\n return sanitize_text_field($post->post_title);\n }\n }\n } else {\n if (isset($posts[$key]) && $posts[$key]) {\n return intval($posts[$key]);\n }\n }\n }\n return $value;\n }\n\n public function extractFields($fields, $formID, $posts, $files) {\n return array_merge($fields, [\n [\n "attrs" => [\n "type" => "custom-select",\n "name" => $this->fieldname\n ]\n ]\n ]);\n }\n\n public function postSelectCallback($atts) {\n ob_start();\n extract(\n shortcode_atts(\n array(\n 'title' => __("Article", "my-domain"),\n ),\n $atts\n )\n );\n ?>\n <div class="formmaster-field" datatype="select" dataname="<?= $this->fieldname; ?>">\n <div class="formmaster-select">\n <select name="<?= $this->fieldname; ?>">\n <option value=""><?= $title . ($this->isRequired ? "*" : ""); ?><\/option>\n <?php\n $posts = get_posts([\n 'post_type' => array("post"),\n 'post_status' => 'publish',\n 'suppress_filters' => false,\n 'posts_per_page' => -1,\n "orderby" => array(\n "title" => "ASC"\n )\n ]);\n foreach ($posts as $post) {\n ?>\n <option value="<?= $post->ID; ?>"><?= $post->post_title; ?><\/option>\n <?php\n }\n ?>\n <\/select>\n <\/div>\n <\/div>\n <?php\n return ob_get_clean();\n }\n\n public function setBlocks($allowed_blocks, $editor_context) {\n if ($editor_context->post && $editor_context->post->post_type === "fmaster_form") {\n return array_merge($allowed_blocks, [\n 'core\/shortcode'\n ]);\n }\n return $allowed_blocks;\n }\n}\n\nnew WP_FormMaster_AddCustomField_PostSelect();\n?><\/textarea>\n