Update database schema for coming category system

This commit updates the database schema and adds a new migration for the
upcoming category system. Please note that you need to have at least the
following MySQL/MariaDB versions to use the category system later:

MariaDB: 10.2.2
MySQL: 8.0

1 files changed, 24 insertions, 0 deletions

diff --git a/core/db/migrations/6.sql b/core/db/migrations/6.sql
new file mode 100644
index 0000000..0808895
--- /dev/null
+++ b/core/db/migrations/6.sql
@@ -0,0 +1,24 @@
+CREATE TABLE `category` (
+	`id` tinyint(3) UNSIGNED NOT NULL AUTO_INCREMENT,
+	`time_insert` datetime NOT NULL,
+	`time_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+	`parent` tinyint(3) UNSIGNED DEFAULT NULL,
+	`slug` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`body` text NOT NULL,
+	`argv` varchar(250) DEFAULT NULL,
+	PRIMARY KEY (`id`),
+	UNIQUE KEY `time_insert` (`time_insert`),
+	UNIQUE KEY `slug` (`slug`),
+	KEY `category_parent` (`parent`),
+	FULLTEXT KEY `search` (`name`, `body`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+ALTER TABLE `post` ADD `category` tinyint(3) UNSIGNED DEFAULT NULL AFTER `user`,
+	ADD KEY `post_category` (`category`);
+
+ALTER TABLE `category` ADD CONSTRAINT `category_parent` FOREIGN KEY (`parent`)
+	REFERENCES `category` (`id`) ON DELETE SET NULL ON UPDATE CASCADE;
+
+ALTER TABLE `post` ADD CONSTRAINT `post_category` FOREIGN KEY (`category`)
+	REFERENCES `category` (`id`) ON DELETE SET NULL ON UPDATE CASCADE;