diff --git a/app/controllers/tests_controller.rb b/app/controllers/tests_controller.rb
index 1526a689..15bb134a 100644
--- a/app/controllers/tests_controller.rb
+++ b/app/controllers/tests_controller.rb
@@ -8,4 +8,8 @@ def create
 
   end
 
+  def show
+    render inline: '<%= Test.find(params[:id].to_i) %>'
+  end
+
 end
diff --git a/app/views/tests/create.html.erb b/app/views/tests/create.html.erb
new file mode 100644
index 00000000..e69de29b
diff --git a/config.ru b/config.ru
index 3060cc20..67b662e4 100644
--- a/config.ru
+++ b/config.ru
@@ -1,3 +1,4 @@
 require_relative 'config/environment'
 
+use AppLogger
 run Simpler.application
diff --git a/config/environment.rb b/config/environment.rb
index 7a0d38c3..09f789a0 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,3 +1,4 @@
 require_relative '../lib/simpler'
+require_relative '../lib/middleware/app_logger'
 
 Simpler.application.bootstrap!
diff --git a/config/routes.rb b/config/routes.rb
index 4a751251..14066154 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,4 +1,5 @@
 Simpler.application.routes do
   get '/tests', 'tests#index'
   post '/tests', 'tests#create'
+  get '/test/:id', 'tests#show'
 end
diff --git a/lib/middleware/app_logger.rb b/lib/middleware/app_logger.rb
new file mode 100644
index 00000000..307c3388
--- /dev/null
+++ b/lib/middleware/app_logger.rb
@@ -0,0 +1,37 @@
+require 'logger'
+
+class AppLogger
+  def initialize(app, **options)
+    @logger = Logger.new(Simpler.root.join('log/app.log'))
+    @app = app
+  end
+
+  def call(env)
+    @response = @app.call(env)
+    @logger.info(request(env))
+    @logger.info(handler(env))
+    @logger.info(parameters(env))
+    @logger.info(response(env))
+
+    @response
+  end
+
+  private
+
+  def request(env)
+    "Request: #{env['REQUEST_METHOD']} #{env['PATH_INFO']}"
+  end
+
+  def handler(env)
+    "Handler: #{env['simpler.controller'].class.name}##{env['simpler.action']}"
+  end
+
+  def parameters(env)
+    "Parameters: #{env['simpler.params']}"
+  end
+
+  def response(env)
+    "Response: #{@response[0]} [#{@response[1]['Content-Type']}] #{env['simpler.template_path']}"
+  end
+
+end
diff --git a/lib/simpler/application.rb b/lib/simpler/application.rb
index 711946a9..1d1af1be 100644
--- a/lib/simpler/application.rb
+++ b/lib/simpler/application.rb
@@ -28,10 +28,13 @@ def routes(&block)
 
     def call(env)
       route = @router.route_for(env)
+      return not_found unless route
+
       controller = route.controller.new(env)
       action = route.action
+      params = route.params
 
-      make_response(controller, action)
+      make_response(controller, action, params)
     end
 
     private
@@ -50,8 +53,12 @@ def setup_database
       @db = Sequel.connect(database_config)
     end
 
-    def make_response(controller, action)
-      controller.make_response(action)
+    def make_response(controller, action, params)
+      controller.make_response(action, params)
+    end
+
+    def not_found
+      Rack::Response.new('Not Found', 404, { 'Content-Type' => 'text/plain' }).finish
     end
 
   end
diff --git a/lib/simpler/controller.rb b/lib/simpler/controller.rb
index 9383b035..6ba7e505 100644
--- a/lib/simpler/controller.rb
+++ b/lib/simpler/controller.rb
@@ -11,9 +11,10 @@ def initialize(env)
       @response = Rack::Response.new
     end
 
-    def make_response(action)
+    def make_response(action, params)
       @request.env['simpler.controller'] = self
       @request.env['simpler.action'] = action
+      @request.env['simpler.params'] = params
 
       set_default_headers
       send(action)
@@ -32,6 +33,19 @@ def set_default_headers
       @response['Content-Type'] = 'text/html'
     end
 
+    def set_header(key, value)
+      @response[key] = value
+    end
+
+    def set_status(code)
+      @response.status = code
+    end
+
+    def set_render_params(**options)
+      set_header('Content-Type', options[:content_type]) if options.has_key? :content_type
+      set_status(options[:status]) if options.has_key? :status
+    end
+
     def write_response
       body = render_body
 
@@ -43,11 +57,16 @@ def render_body
     end
 
     def params
-      @request.params
+      @request.params.merge(@request.env['simpler.params'])
     end
 
-    def render(template)
-      @request.env['simpler.template'] = template
+    def render(*args, **options)
+      set_render_params(**options)
+      @request.env['simpler.template'] = if args.length.zero?
+                                           options.except(:content_type, :status)
+                                         else
+                                           { erb: args }
+                                         end
     end
 
   end
diff --git a/lib/simpler/router.rb b/lib/simpler/router.rb
index 14b3415c..45086e9b 100644
--- a/lib/simpler/router.rb
+++ b/lib/simpler/router.rb
@@ -19,7 +19,9 @@ def route_for(env)
       method = env['REQUEST_METHOD'].downcase.to_sym
       path = env['PATH_INFO']
 
-      @routes.find { |route| route.match?(method, path) }
+      route = @routes.find { |route| route.match?(method, path) }
+      route.set_params(path)
+      route
     end
 
     private
diff --git a/lib/simpler/router/route.rb b/lib/simpler/router/route.rb
index 4c66b4b7..1f0ea0b1 100644
--- a/lib/simpler/router/route.rb
+++ b/lib/simpler/router/route.rb
@@ -2,7 +2,7 @@ module Simpler
   class Router
     class Route
 
-      attr_reader :controller, :action
+      attr_reader :controller, :action, :params
 
       def initialize(method, path, controller, action)
         @method = method
@@ -12,7 +12,11 @@ def initialize(method, path, controller, action)
       end
 
       def match?(method, path)
-        @method == method && path.match(@path)
+        @method == method && (path =~ Regexp.new(@path.gsub(/:(\w+)/, '\w+'))) == 0
+      end
+
+      def set_params(path)
+        @params = path.match(Regexp.new(@path.gsub(/:(\w+)/, '(?<\1>.+)'))).named_captures.transform_keys!(&:to_sym)
       end
 
     end
diff --git a/lib/simpler/view.rb b/lib/simpler/view.rb
index 19a73b34..ff82e687 100644
--- a/lib/simpler/view.rb
+++ b/lib/simpler/view.rb
@@ -1,22 +1,48 @@
 require 'erb'
+require 'json'
 
 module Simpler
   class View
 
     VIEW_BASE_PATH = 'app/views'.freeze
+    VIEW_TYPES = %i[erb plain json inline].freeze
 
     def initialize(env)
       @env = env
+      @view_type = @env['simpler.template'].nil? ? :erb : set_view_type
+      @view_body = @env['simpler.template'].nil? ? nil : @env['simpler.template'][@view_type]
+    end
+
+    def set_view_type
+      available_types = @env['simpler.template'].keys.intersection(VIEW_TYPES)
+      available_types.nil? ? :erb : available_types[0]
     end
 
     def render(binding)
-      template = File.read(template_path)
+      @binding = binding
 
-      ERB.new(template).result(binding)
+      send @view_type
     end
 
     private
 
+    def erb
+      template = File.read(template_path)
+      ERB.new(template).result(@binding)
+    end
+
+    def plain
+      @view_body
+    end
+
+    def json
+      @view_body.to_json
+    end
+
+    def inline
+      ERB.new(@env['simpler.template'][@view_type]).result(@binding)
+    end
+
     def controller
       @env['simpler.controller']
     end
@@ -26,11 +52,11 @@ def action
     end
 
     def template
-      @env['simpler.template']
+      @view_body
     end
 
     def template_path
-      path = template || [controller.name, action].join('/')
+      @env['simpler.template_path'] = path = template || [controller.name, action].join('/')
 
       Simpler.root.join(VIEW_BASE_PATH, "#{path}.html.erb")
     end
diff --git a/log/app.log b/log/app.log
new file mode 100644
index 00000000..bc40e158
--- /dev/null
+++ b/log/app.log
@@ -0,0 +1,12 @@
+I, [2023-04-02T12:47:44.696636 #22331]  INFO -- : Request: GET /tests
+I, [2023-04-02T12:47:44.696723 #22331]  INFO -- : Handler: TestsController#index
+I, [2023-04-02T12:47:44.696751 #22331]  INFO -- : Parameters: {}
+I, [2023-04-02T12:47:44.696774 #22331]  INFO -- : Response: 200 [text/html] tests/index
+I, [2023-04-02T12:48:58.203803 #22331]  INFO -- : Request: GET /test/1
+I, [2023-04-02T12:48:58.212994 #22331]  INFO -- : Handler: TestsController#show
+I, [2023-04-02T12:48:58.213071 #22331]  INFO -- : Parameters: {:id=>"1"}
+I, [2023-04-02T12:48:58.213111 #22331]  INFO -- : Response: 200 [text/html] 
+I, [2023-04-02T12:50:48.216637 #22331]  INFO -- : Request: POST /tests
+I, [2023-04-02T12:50:48.216711 #22331]  INFO -- : Handler: TestsController#create
+I, [2023-04-02T12:50:48.216745 #22331]  INFO -- : Parameters: {}
+I, [2023-04-02T12:50:48.216773 #22331]  INFO -- : Response: 200 [text/html] tests/create