- Add permission "No comments". It is like normal user, but does not show comments and activities.

Thanks to xet7 !

client/components/cards/cardDetails.jade

@@ -173,25 +173,28 @@ template(name="cardDetails")
     +attachmentsGalery
 
     hr
-    .activity-title
-      h3 {{ _ 'activity'}}
-      if currentUser.isBoardMember
-        .material-toggle-switch
-          span.toggle-switch-title {{_ 'hide-system-messages'}}
-          if hiddenSystemMessages
-            input.toggle-switch(type="checkbox" id="toggleButton" checked="checked")
-          else
-            input.toggle-switch(type="checkbox" id="toggleButton")
-          label.toggle-label(for="toggleButton")
+    unless currentUser.isNoComments
+      .activity-title
+        h3 {{ _ 'activity'}}
+        if currentUser.isBoardMember
+          .material-toggle-switch
+            span.toggle-switch-title {{_ 'hide-system-messages'}}
+            if hiddenSystemMessages
+              input.toggle-switch(type="checkbox" id="toggleButton" checked="checked")
+            else
+              input.toggle-switch(type="checkbox" id="toggleButton")
+            label.toggle-label(for="toggleButton")
     if currentUser.isBoardMember
-      +commentForm
-    if isLoaded.get
-      if isLinkedCard
-        +activities(card=this mode="linkedcard")
-      else if isLinkedBoard
-        +activities(card=this mode="linkedboard")
-      else
-        +activities(card=this mode="card")
+      unless currentUser.isNoComments
+        +commentForm
+    unless currentUser.isNoComments
+      if isLoaded.get
+        if isLinkedCard
+          +activities(card=this mode="linkedcard")
+        else if isLinkedBoard
+          +activities(card=this mode="linkedboard")
+        else
+          +activities(card=this mode="card")
 
 template(name="editCardTitleForm")
   textarea.js-edit-card-title(rows='1' autofocus)

client/components/cards/minicard.jade

@@ -65,10 +65,11 @@ template(name="minicard")
           +userAvatar(userId=this)
 
     .badges
-      if comments.count
-        .badge(title="{{_ 'card-comments-title' comments.count }}")
-          span.badge-icon.fa.fa-comment-o.badge-comment
-          span.badge-text= comments.count
+      unless currentUser.isNoComments
+        if comments.count
+          .badge(title="{{_ 'card-comments-title' comments.count }}")
+            span.badge-icon.fa.fa-comment-o.badge-comment
+            span.badge-text= comments.count
       if getDescription
         .badge.badge-state-image-only(title=getDescription)
           span.badge-icon.fa.fa-align-left

client/components/sidebar/sidebar.jade

@@ -23,10 +23,11 @@ template(name='homeSidebar')
   hr
   +labelsWidget
   hr
-  h3
-    i.fa.fa-comments-o
-    | {{_ 'activities'}}
-  +activities(mode="board")
+  unless currentUser.isNoComments
+    h3
+      i.fa.fa-comments-o
+      | {{_ 'activities'}}
+    +activities(mode="board")
 
 template(name="membersWidget")
   .board-widget.board-widget-members
@@ -145,6 +146,12 @@ template(name="changePermissionsPopup")
         if isNormal
           i.fa.fa-check
         span.sub-name {{_ 'normal-desc'}}
+    li
+      a(class="{{#if isLastAdmin}}disabled{{else}}js-set-no-comments{{/if}}")
+        | {{_ 'no-comments'}}
+        if isNoComments
+          i.fa.fa-check
+        span.sub-name {{_ 'no-comments-desc'}}
     li
       a(class="{{#if isLastAdmin}}disabled{{else}}js-set-comment-only{{/if}}")
         | {{_ 'comment-only'}}

client/components/sidebar/sidebar.js

@@ -126,8 +126,11 @@ Template.memberPopup.helpers({
     if(type === 'normal'){
       const currentBoard = Boards.findOne(Session.get('currentBoard'));
       const commentOnly = currentBoard.hasCommentOnly(this.userId);
+      const noComments = currentBoard.hasNoComments(this.userId);
       if(commentOnly){
         return TAPi18n.__('comment-only').toLowerCase();
+      } else if(noComments) {
+        return TAPi18n.__('no-comments').toLowerCase();
       } else {
         return TAPi18n.__(type).toLowerCase();
       }
@@ -324,12 +327,13 @@ BlazeComponent.extendComponent({
 }).register('addMemberPopup');
 
 Template.changePermissionsPopup.events({
-  'click .js-set-admin, click .js-set-normal, click .js-set-comment-only'(event) {
+  'click .js-set-admin, click .js-set-normal, click .js-set-no-comments, click .js-set-comment-only'(event) {
     const currentBoard = Boards.findOne(Session.get('currentBoard'));
     const memberId = this.userId;
     const isAdmin = $(event.currentTarget).hasClass('js-set-admin');
     const isCommentOnly = $(event.currentTarget).hasClass('js-set-comment-only');
-    currentBoard.setMemberPermission(memberId, isAdmin, isCommentOnly);
+    const isNoComments = $(event.currentTarget).hasClass('js-set-no-comments');
+    currentBoard.setMemberPermission(memberId, isAdmin, isNoComments, isCommentOnly);
     Popup.back(1);
   },
 });
@@ -342,7 +346,12 @@ Template.changePermissionsPopup.helpers({
 
   isNormal() {
     const currentBoard = Boards.findOne(Session.get('currentBoard'));
-    return !currentBoard.hasAdmin(this.userId) && !currentBoard.hasCommentOnly(this.userId);
+    return !currentBoard.hasAdmin(this.userId) && !currentBoard.hasNoComments(this.userId) && !currentBoard.hasCommentOnly(this.userId);
+  },
+
+  isNoComments() {
+    const currentBoard = Boards.findOne(Session.get('currentBoard'));
+    return !currentBoard.hasAdmin(this.userId) && currentBoard.hasNoComments(this.userId);
   },
 
   isCommentOnly() {