Add minimum tags per topic setting.

public/src/modules/composer.js

@@ -497,6 +497,8 @@ define('composer', [
 			return composerAlert(post_uuid, '[[error:title-too-long, ' + config.maximumTitleLength + ']]');
 		} else if (checkTitle && !utils.slugify(titleEl.val()).length) {
 			return composerAlert(post_uuid, '[[error:invalid-title]]');
+		} else if (checkTitle && tags.getTags(post_uuid) && tags.getTags(post_uuid).length < parseInt(config.minimumTagsPerTopic, 10)) {
+			return composerAlert(post_uuid, '[[error:not-enough-tags]]');
 		} else if (bodyEl.val().length < parseInt(config.minimumPostLength, 10)) {
 			return composerAlert(post_uuid, '[[error:content-too-short, ' + config.minimumPostLength + ']]');
 		} else if (bodyEl.val().length > parseInt(config.maximumPostLength, 10)) {

public/src/modules/composer/tags.js

@@ -13,6 +13,7 @@ define('composer/tags', function() {
 		}
 
 		tagEl.tagsinput({
+			minTags: config.minimumTagsPerTopic,
 			maxTags: config.tagsPerTopic,
 			maxChars: config.maximumTagLength,
 			confirmKeys: [13, 44],

src/controllers/api.js

@@ -55,6 +55,7 @@ apiController.getConfig = function(req, res, next) {
 	config.disableChat = parseInt(meta.config.disableChat, 10) === 1;
 	config.maxReconnectionAttempts = meta.config.maxReconnectionAttempts || 5;
 	config.reconnectionDelay = meta.config.reconnectionDelay || 1500;
+	config.minimumTagsPerTopic = meta.config.minimumTagsPerTopic || 0;
 	config.tagsPerTopic = meta.config.tagsPerTopic || 5;
 	config.minimumTagLength = meta.config.minimumTagLength || 3;
 	config.maximumTagLength = meta.config.maximumTagLength || 15;

src/socket.io/posts.js

@@ -284,6 +284,8 @@ SocketPosts.edit = function(socket, data, callback) {
 		return callback(new Error('[[error:title-too-short, ' + meta.config.minimumTitleLength + ']]'));
 	} else if (data.title && data.title.length > parseInt(meta.config.maximumTitleLength, 10)) {
 		return callback(new Error('[[error:title-too-long, ' + meta.config.maximumTitleLength + ']]'));
+	} else if (data.title && data.tags && data.tags.length < parseInt(meta.config.minimumTagsPerTopic, 10)) {
+		return callback(new Error('[[error:not-enough-tags, ' + meta.config.minimumTagsPerTopic + ']]'));
 	} else if (!data.content || data.content.length < parseInt(meta.config.minimumPostLength, 10)) {
 		return callback(new Error('[[error:content-too-short, ' + meta.config.minimumPostLength + ']]'));
 	} else if (data.content.length > parseInt(meta.config.maximumPostLength, 10)) {

src/topics/create.js

@@ -96,6 +96,9 @@ module.exports = function(Topics) {
 			function(next) {
 				checkTitleLength(title, next);
 			},
+			function(next) {
+				checkTagsLength(data.tags, next);
+			},
 			function(next) {
 				checkContentLength(data.content, next);
 			},
@@ -290,6 +293,13 @@ module.exports = function(Topics) {
 		callback();
 	}
 
+	function checkTagsLength(tags, callback) {
+		if (!tags || tags.length < parseInt(meta.config.minimumTagsPerTopic, 10)) {
+			return callback(new Error('[[error:not-enough-tags, ' + meta.config.minimumTagsPerTopic + ']]'));
+		}
+		callback();
+	}
+
 	function checkContentLength(content, callback) {
 		if (!content || content.length < parseInt(meta.config.miminumPostLength, 10)) {
 			return callback(new Error('[[error:content-too-short, '  + meta.config.minimumPostLength + ']]'));

src/views/admin/settings/tags.tpl

@@ -10,7 +10,11 @@
 				</label>
 			</div>
 			<div class="form-group">
-				<label for="tagsPerTopics">Tags per Topic</label>
+				<label for="minimumTagsPerTopics">Minimum Tags per Topic</label>
+				<input id="minimumTagsPerTopics" type="text" class="form-control" value="0" data-field="minimumTagsPerTopic">
+			</div>
+			<div class="form-group">
+				<label for="tagsPerTopics">Maximum Tags per Topic</label>
 				<input id="tagsPerTopics" type="text" class="form-control" value="5" data-field="tagsPerTopic">
 			</div>
 			<div class="form-group">