closes #2639

public/language/en_GB/error.json

@@ -52,6 +52,8 @@
 	"invalid-title": "Invalid title!",
 	"too-many-posts": "You can only post once every %1 seconds - please wait before posting again",
 	"too-many-posts-newbie": "As a new user, you can only post once every %1 seconds until you have earned %2 reputation - please wait before posting again",
+	"tag-too-short": "Please enter a longer tag. Tags should contain at least %1 characters",
+	"tag-too-long": "Please enter a shorter tag. Tags can't be longer than %1 characters",
 	"file-too-big": "Maximum allowed file size is %1 kbs - please upload a smaller file",
 
 	"cant-vote-self-post": "You cannot vote for your own post",

public/language/en_GB/tags.json

@@ -1,7 +1,7 @@
 {
 	"no_tag_topics": "There are no topics with this tag.",
 	"tags": "Tags",
-	"enter_tags_here": "Enter tags here. Press enter after each tag.",
+	"enter_tags_here": "Enter tags here. %1-%2 characters. Press enter after each tag.",
 	"enter_tags_here_short": "Enter tags...",
 	"no_tags": "There are no tags yet."
 }

public/src/modules/composer.js

@@ -228,6 +228,8 @@ define('composer', [
 		var data = {
 			allowTopicsThumbnail: allowTopicsThumbnail,
 			showTags: isTopic || isMain,
+			minimumTagLength: config.minimumTagLength,
+			maximumTagLength: config.maximumTagLength,
 			isTopic: isTopic,
 			showHandleInput: (app.user.uid === 0 || (isEditing && isGuestPost && app.user.isAdmin)) && config.allowGuestHandles,
 			handle: composer.posts[post_uuid] ? composer.posts[post_uuid].handle || '' : undefined

public/src/modules/composer/tags.js

@@ -14,7 +14,17 @@ define('composer/tags', function() {
 
 		tagEl.tagsinput({
 			maxTags: config.tagsPerTopic,
-			confirmKeys: [13, 44]
+			confirmKeys: [13, 44],
+			trimValue: true			
+		});
+
+		tagEl.on('beforeItemAdd', function(event) {
+			event.cancel = event.item.length < config.minimumTagLength || event.item.length > config.maximumTagLength;
+			if (event.item.length < config.minimumTagLength) {
+				app.alertError('[[error:tag-too-short, ' + config.minimumTagLength + ']]');
+			} else if (event.item.length > config.maximumTagLength) {
+				app.alertError('[[error:tag-too-long, ' + config.maximumTagLength + ']]');
+			}
 		});
 
 		tagEl.on('itemAdded', function(event) {

public/vendor/jquery/bootstrap-tagsinput/bootstrap-tagsinput.css

@@ -10,6 +10,7 @@
   border-radius: 4px;
   max-width: 100%;
   line-height: 22px;
+  cursor: text;
 }
 .bootstrap-tagsinput input {
   border: none;

public/vendor/jquery/bootstrap-tagsinput/bootstrap-tagsinput.min.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"dist/bootstrap-tagsinput-angular.min.js","sources":["src/bootstrap-tagsinput-angular.js"],"names":["angular","module","directive","getItemProperty","scope","property","isFunction","$parent","item","undefined","restrict","model","template","replace","link","element","attrs","$","isArray","select","typeaheadSourceArray","typeaheadSource","split","length","tagsinput","options","typeahead","source","itemValue","itemvalue","itemText","itemtext","confirmKeys","confirmkeys","JSON","parse","tagClass","tagclass","i","on","event","indexOf","push","idx","splice","prev","slice","$watch","added","filter","removed"],"mappings":";;;;;AAAAA,QAAQC,OAAO,0BACdC,UAAU,sBAAuB,WAEhC,QAASC,GAAgBC,EAAOC,GAC9B,MAAKA,GAGDL,QAAQM,WAAWF,EAAMG,QAAQF,IAC5BD,EAAMG,QAAQF,GAEhB,SAASG,GACd,MAAOA,GAAKH,IANLI,OAUX,OACEC,SAAU,KACVN,OACEO,MAAO,YAETC,SAAU,6BACVC,SAAS,EACTC,KAAM,SAASV,EAAOW,EAASC,GAC7BC,EAAE,WACKjB,QAAQkB,QAAQd,EAAMO,SACzBP,EAAMO,SAER,IAAIQ,GAASF,EAAE,SAAUF,GACrBK,EAAuBJ,EAAMK,gBAAkBL,EAAMK,gBAAgBC,MAAM,KAAO,KAClFD,EAAkBD,EACjBA,EAAqBG,OAAS,EAC3BnB,EAAMG,QAAQa,EAAqB,IAAIA,EAAqB,IAC1DhB,EAAMG,QAAQa,EAAqB,IACvC,IAEND,GAAOK,UAAUpB,EAAMG,QAAQS,EAAMS,SAAW,MAC9CC,WACEC,OAAW3B,QAAQM,WAAWe,GAAmBA,EAAkB,MAErEO,UAAWzB,EAAgBC,EAAOY,EAAMa,WACxCC,SAAW3B,EAAgBC,EAAOY,EAAMe,UACxCC,YAAc7B,EAAgBC,EAAOY,EAAMiB,aAAeC,KAAKC,MAAMnB,EAAMiB,cAAgB,IAC3FG,SAAWpC,QAAQM,WAAWF,EAAMG,QAAQS,EAAMqB,WAAajC,EAAMG,QAAQS,EAAMqB,UAAY,WAAiB,MAAOrB,GAAMqB,WAG/H,KAAK,GAAIC,GAAI,EAAGA,EAAIlC,EAAMO,MAAMY,OAAQe,IACtCnB,EAAOK,UAAU,MAAOpB,EAAMO,MAAM2B,GAGtCnB,GAAOoB,GAAG,YAAa,SAASC,GACU,KAApCpC,EAAMO,MAAM8B,QAAQD,EAAMhC,OAC5BJ,EAAMO,MAAM+B,KAAKF,EAAMhC,QAG3BW,EAAOoB,GAAG,cAAe,SAASC,GAChC,GAAIG,GAAMvC,EAAMO,MAAM8B,QAAQD,EAAMhC,KACxB,MAARmC,GACFvC,EAAMO,MAAMiC,OAAOD,EAAK,IAK5B,IAAIE,GAAOzC,EAAMO,MAAMmC,OACvB1C,GAAM2C,OAAO,QAAS,WACpB,GAEIT,GAFAU,EAAQ5C,EAAMO,MAAMsC,OAAO,SAASX,GAAI,MAA2B,KAApBO,EAAKJ,QAAQH,KAC5DY,EAAUL,EAAKI,OAAO,SAASX,GAAI,MAAkC,KAA3BlC,EAAMO,MAAM8B,QAAQH,IAMlE,KAHAO,EAAOzC,EAAMO,MAAMmC,QAGdR,EAAI,EAAGA,EAAIY,EAAQ3B,OAAQe,IAC9BnB,EAAOK,UAAU,SAAU0B,EAAQZ,GAOrC,KAHAnB,EAAOK,UAAU,WAGZc,EAAI,EAAGA,EAAIU,EAAMzB,OAAQe,IAC5BnB,EAAOK,UAAU,MAAOwB,EAAMV,MAE/B"}

src/controllers/api.js

@@ -43,6 +43,8 @@ apiController.getConfig = function(req, res, next) {
 	config.maxReconnectionAttempts = meta.config.maxReconnectionAttempts || 5;
 	config.reconnectionDelay = meta.config.reconnectionDelay || 200;
 	config.tagsPerTopic = meta.config.tagsPerTopic || 5;
+	config.minimumTagLength = meta.config.minimumTagLength || 3;
+	config.maximumTagLength = meta.config.maximumTagLength || 15;
 	config.topicsPerPage = meta.config.topicsPerPage || 20;
 	config.postsPerPage = meta.config.postsPerPage || 20;
 	config.maximumFileSize = meta.config.maximumFileSize;