implement saved searches, move user boolean settings to bitprefs

app/models/saved_search.rb

@@ -0,0 +1,31 @@
+class SavedSearch < ActiveRecord::Base
+  belongs_to :user
+  validates :tag_query, :presence => true
+  validate :validate_count
+  attr_accessible :tag_query, :category
+  before_create :update_user_on_create
+  after_destroy :update_user_on_destroy
+  validates_uniqueness_of :tag_query, :scope => :user_id
+
+  def self.tagged(tags)
+    where(:tag_query => tags).first
+  end
+
+  def validate_count
+    if user.saved_searches.count + 1 > user.max_saved_searches
+      self.errors[:user] << "can only have up to #{user.max_saved_searches} " + "saved search".pluralize(user.max_saved_searches)
+    end
+  end
+
+  def update_user_on_create
+    if !user.has_saved_searches?
+      user.update_attribute(:has_saved_searches, true)
+    end
+  end
+
+  def update_user_on_destroy
+    if user.saved_searches.count == 0
+      user.update_attribute(:has_saved_searches, false)
+    end
+  end
+end