require a minimum karma to suggest story title/tag suggestions

app/controllers/stories_controller.rb

@@ -171,6 +171,11 @@ class StoriesController < ApplicationController
   end
 
   def suggest
+    if !@story.can_have_suggestions_from_user?(@user)
+      flash[:error] = "You are not allowed to offer suggestions on that story."
+      return redirect_to @story.comments_path
+    end
+
     if (st = @story.suggested_taggings.where(:user_id => @user.id)).any?
       @story.tags_a = st.map{|st| st.tag.tag }
     end
@@ -180,6 +185,11 @@ class StoriesController < ApplicationController
   end
 
   def submit_suggestions
+    if !@story.can_have_suggestions_from_user?(@user)
+      flash[:error] = "You are not allowed to offer suggestions on that story."
+      return redirect_to @story.comments_path
+    end
+
     ostory = @story.dup
 
     @story.title = params[:story][:title]

app/models/story.rb

@@ -219,11 +219,7 @@ class Story < ActiveRecord::Base
   end
 
   def can_have_suggestions_from_user?(user)
-    if !user
-      return false
-    end
-
-    if user.id == self.user_id
+    if !user || (user.id == self.user_id) || !user.can_offer_suggestions?
       return false
     end
 

app/models/user.rb

@@ -59,6 +59,9 @@ class User < ActiveRecord::Base
   # days old accounts are considered new for
   NEW_USER_DAYS = 7
 
+  # minimum karma required to be able to offer title/tag suggestions
+  MIN_KARMA_TO_SUGGEST = 10
+
   def self.recalculate_all_karmas!
     User.all.each do |u|
       u.karma = u.stories.map(&:score).sum + u.comments.map(&:score).sum
@@ -146,6 +149,10 @@ class User < ActiveRecord::Base
     false
   end
 
+  def can_offer_suggestions?
+    !self.is_new? && (self.karma >= MIN_KARMA_TO_SUGGEST)
+  end
+
   def check_session_token
     if self.session_token.blank?
       self.session_token = Utils.random_str(60)