FIX: Moderation actions can have their messages removed

app/assets/javascripts/discourse/controllers/composer.js.es6

@@ -168,15 +168,15 @@ export default Ember.ObjectController.extend(Presence, {
   }.property('model.loading'),
 
   save(force) {
-    const composer = this.get('model'),
-          self = this;
+    const composer = this.get('model');
+    const self = this;
 
     // Clear the warning state if we're not showing the checkbox anymore
     if (!this.get('showWarning')) {
       this.set('model.isWarning', false);
     }
 
-    if(composer.get('cantSubmitPost')) {
+    if (composer.get('cantSubmitPost')) {
       const now = Date.now();
       this.setProperties({
         'view.showTitleTip': now,

app/assets/javascripts/discourse/models/composer.js.es6

@@ -114,6 +114,7 @@ const Composer = RestModel.extend({
 
   // whether to disable the post button
   cantSubmitPost: function() {
+
     // can't submit while loading
     if (this.get('loading')) return true;
 
@@ -199,12 +200,9 @@ const Composer = RestModel.extend({
     }
   }.property('privateMessage'),
 
-  /**
-    Number of missing characters in the reply until valid.
-
-    @property missingReplyCharacters
-  **/
   missingReplyCharacters: function() {
+    const postType = this.get('post.post_type');
+    if (postType === this.site.get('post_types.small_action')) { return 0; }
     return this.get('minimumPostLength') - this.get('replyLength');
   }.property('minimumPostLength', 'replyLength'),
 

app/assets/javascripts/discourse/views/composer.js.es6

@@ -584,15 +584,18 @@ const ComposerView = Discourse.View.extend(Ember.Evented, {
   }.property('model.categoryId'),
 
   replyValidation: function() {
+    const postType = this.get('model.post.post_type');
+    if (postType === this.site.get('post_types.small_action')) { return; }
+
     const replyLength = this.get('model.replyLength'),
-        missingChars = this.get('model.missingReplyCharacters');
+          missingChars = this.get('model.missingReplyCharacters');
 
     let reason;
     if (replyLength < 1) {
       reason = I18n.t('composer.error.post_missing');
     } else if (missingChars > 0) {
       reason = I18n.t('composer.error.post_length', {min: this.get('model.minimumPostLength')});
-      let tl = Discourse.User.currentProp("trust_level");
+      const tl = Discourse.User.currentProp("trust_level");
       if (tl === 0 || tl === 1) {
         reason += "<br/>" + I18n.t('composer.error.try_like');
       }

app/assets/javascripts/discourse/views/post.js.es6

@@ -13,7 +13,7 @@ const PostView = Discourse.GroupedView.extend(Ember.Evented, {
   post: Ember.computed.alias('content'),
 
   templateName: function() {
-    return (this.get('post.post_type') === 3) ? 'post-small-action' : 'post';
+    return (this.get('post.post_type') === this.site.get('post_types.small_action')) ? 'post-small-action' : 'post';
   }.property('post.post_type'),
 
   historyHeat: function() {