Kill trailing whitespace in ruby files

app/models/ban.rb

@@ -6,42 +6,42 @@ class Ban < ActiveRecord::Base
   validate :user_is_inferior
   validates_presence_of :user_id, :reason, :duration
   before_validation :initialize_banner_id, :on => :create
-    
+
   def self.is_banned?(user)
     exists?(["user_id = ? AND expires_at > ?", user.id, Time.now])
   end
-  
+
   def self.search(params)
     q = scoped
     return q if params.blank?
-    
+
     if params[:banner_name]
       q = q.where("banner_id = (select _.id from users _ where lower(_.name) = ?)", params[:banner_name].downcase)
     end
-    
+
     if params[:banner_id]
       q = q.where("banner_id = ?", params[:banner_id].to_i)
     end
-    
+
     if params[:user_name]
       q = q.where("user_id = (select _.id from users _ where lower(_.name) = ?)", params[:user_name].downcase)
     end
-    
+
     if params[:user_id]
       q = q.where("user_id = ?", params[:user_id].to_i)
     end
-    
+
     q
   end
-  
+
   def initialize_banner_id
     self.banner_id = CurrentUser.id
   end
-  
+
   def user_is_inferior
     if user
       if user.is_admin?
-        errors[:base] << "You can never ban an admin."      
+        errors[:base] << "You can never ban an admin."
         false
       elsif user.is_moderator? && banner.is_admin?
         true
@@ -56,7 +56,7 @@ class Ban < ActiveRecord::Base
       end
     end
   end
-  
+
   def update_feedback
     if user
       feedback = user.feedback.build
@@ -66,24 +66,24 @@ class Ban < ActiveRecord::Base
       feedback.save
     end
   end
-  
+
   def user_name
     user ? user.name : nil
   end
-  
+
   def user_name=(username)
     self.user_id = User.name_to_id(username)
   end
-  
+
   def duration=(dur)
     self.expires_at = dur.to_i.days.from_now
     @duration = dur
   end
-  
+
   def duration
     @duration
   end
-  
+
   def expired?
     expires_at < Time.now
   end