Changing collation to utf8mb4 (#226)

* Changing collation to utf8mb4

* Increased Joomla version requirement

manifest.xml

@@ -11,6 +11,6 @@
 		<downloads>
 			<downloadurl type="full" format="zip">https://github.com/joomla-extensions/weblinks/releases/download/3.5.0/pkg-weblinks-3.5.0.zip</downloadurl>
 		</downloads>
-		<targetplatform name="joomla" version="3.[456789]" />
+		<targetplatform name="joomla" version="3.[56789]" />
 	</update>
 </updates>

src/administrator/components/com_weblinks/sql/install.mysql.sql

@@ -14,7 +14,7 @@ CREATE TABLE IF NOT EXISTS `#__weblinks` (
   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
   `catid` int(11) NOT NULL DEFAULT 0,
   `title` varchar(250) NOT NULL DEFAULT '',
-  `alias` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
+  `alias` varchar(400) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '',
   `url` varchar(250) NOT NULL DEFAULT '',
   `description` text NOT NULL,
   `hits` int(11) NOT NULL DEFAULT 0,
@@ -48,4 +48,4 @@ CREATE TABLE IF NOT EXISTS `#__weblinks` (
   KEY `idx_featured_catid` (`featured`,`catid`),
   KEY `idx_language` (`language`),
   KEY `idx_xreference` (`xreference`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 DEFAULT COLLATE=utf8mb4_unicode_ci;

src/administrator/components/com_weblinks/sql/updates/mysql/3.5.1.sql

@@ -0,0 +1,25 @@
+# Conversion to utf8mb4
+
+--
+-- Step 1.1: Enlarge columns to avoid data loss on later conversion to utf8mb4
+--
+
+ALTER TABLE `#__weblinks` MODIFY `alias` varchar(400) NOT NULL DEFAULT '';
+
+--
+-- Step 1.2: Convert table to utf8mb4 chracter set with utf8mb4_unicode_ci collation
+--
+
+ALTER TABLE `#__weblinks` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+--
+-- Step 1.3: Set collation to utf8mb4_bin for formerly utf8_bin collated columns
+--
+
+ALTER TABLE `#__weblinks` MODIFY `alias` varchar(400) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '';
+
+--
+-- Step 1.4: Set default character set and collation for all tables
+--
+
+ALTER TABLE `#__weblinks` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

src/administrator/components/com_weblinks/weblinks.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<extension type="component" version="3.1" method="upgrade">
+<extension type="component" version="3.5" method="upgrade">
 	<name>com_weblinks</name>
 	<author>Joomla! Project</author>
 	<creationDate>##DATE##</creationDate>

src/modules/mod_weblinks/mod_weblinks.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<extension type="module" version="3.1" client="site" method="upgrade">
+<extension type="module" version="3.5" client="site" method="upgrade">
 	<name>mod_weblinks</name>
 	<author>Joomla! Project</author>
 	<creationDate>##DATE##</creationDate>

src/pkg_weblinks.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<extension type="package" version="3.0" method="upgrade">
+<extension type="package" version="3.5" method="upgrade">
 	<name>pkg_weblinks</name>
 	<packagename>weblinks</packagename>
 	<creationDate>December 2012</creationDate>

src/plugins/finder/weblinks/weblinks.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<extension version="3.1" type="plugin" group="finder" method="upgrade">
+<extension version="3.5" type="plugin" group="finder" method="upgrade">
 	<name>plg_finder_weblinks</name>
 	<author>Joomla! Project</author>
 	<creationDate>##DATE##</creationDate>

src/plugins/search/weblinks/weblinks.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<extension version="3.1" type="plugin" group="search" method="upgrade">
+<extension version="3.5" type="plugin" group="search" method="upgrade">
 	<name>plg_search_weblinks</name>
 	<author>Joomla! Project</author>
 	<creationDate>##DATE##</creationDate>