add seeking clients? instance method

app/controllers/volunteers_controller.rb

@@ -48,7 +48,7 @@ class VolunteersController < ApplicationController
   end
 
   def seeking_clients
-    @q = Volunteer.seeking_clients.ransack(params[:q])
+    @q = Volunteer.where(state: Volunteer::SEEKING_CLIENTS).ransack(params[:q])
     @seeking_clients = @q.result
   end
 

app/models/volunteer.rb

@@ -31,6 +31,7 @@ class Volunteer < ApplicationRecord
   STATES_FOR_REVIEWED = [
     CONTACTED, ACTIVE, ACCEPTED, ACTIVE_FURTHER, REJECTED, RESIGNED, INACTIVE
   ].freeze
+  SEEKING_CLIENTS = [ACCEPTED, ACTIVE_FURTHER, INACTIVE].freeze
   STATES = [REGISTERED] + STATES_FOR_REVIEWED
 
   has_many :assignments
@@ -98,7 +99,11 @@ class Volunteer < ApplicationRecord
   end
 
   def self.seeking_clients
-    Volunteer.where(state: [Volunteer::ACCEPTED, Volunteer::ACTIVE_FURTHER, Volunteer::INACTIVE])
+    Volunteer.where(state: SEEKING_CLIENTS)
+  end
+
+  def seeking_clients?
+    SEEKING_CLIENTS.include?(state)
   end
 
   private

app/views/volunteers/show.html.slim

@@ -2,7 +2,7 @@
   .col-xs-12
     h1= @volunteer.contact.full_name
 
-- if Volunteer.seeking_clients.include?(@volunteer)
+- if @volunteer.seeking_clients?
   .row
     .col-xs-12
       = button_link t_title(:new, Assignment), new_assignment_path(volunteer_id: @volunteer)