Allow to set default application options

lib/kan/abilities.rb

@@ -41,6 +41,10 @@ def initialize(options = {})
       @options = options
     end
 
+    def update_options(new_options)
+      self.class.new(new_options.merge(@options))
+    end
+
     def ability(name)
       self.class.ability_list[name.to_sym] || @options[:default_ability_block] || DEFAULT_ABILITY_BLOCK
     end

lib/kan/abilities_list.rb

@@ -1,8 +1,8 @@
 module Kan
   class AbilitiesList
-    def initialize(name, list)
+    def initialize(name, list, default_options = {})
       @name = name
-      @list = list
+      @list = list.map { |ability| ability.update_options(default_options) }
     end
 
     def call(*payload)

lib/kan/application.rb

@@ -1,5 +1,13 @@
 module Kan
   class Application
+    def self.default_options(options = {})
+      @default_options = Hash(options)
+    end
+
+    def self.default_options
+      @default_options || {}
+    end
+
     def initialize(scopes)
       @scopes = Hash(scopes)
     end
@@ -10,7 +18,7 @@ def [](ability)
       abilities = Array(@scopes[scope.to_sym])
       raise_scope_error(scope) if abilities.empty?
 
-      AbilitiesList.new(ability_name, abilities)
+      AbilitiesList.new(ability_name, abilities, self.class.default_options)
     end
 
     private