diff --git a/pagetop-admin/src/lib.rs b/pagetop-admin/src/lib.rs
index 5ca91531..d05138b4 100644
--- a/pagetop-admin/src/lib.rs
+++ b/pagetop-admin/src/lib.rs
@@ -1,5 +1,7 @@
 use pagetop::prelude::*;
 
+pub const ADMIN_MODULE: &str = "pagetop-admin::module::admin";
+
 localize!("src/locales");
 
 mod summary;
@@ -7,6 +9,10 @@ mod summary;
 pub struct Admin;
 
 impl ModuleTrait for Admin {
+    fn handler(&self) -> &'static str {
+        ADMIN_MODULE
+    }
+
     fn name(&self) -> String {
         l("module_name")
     }
diff --git a/pagetop-node/src/lib.rs b/pagetop-node/src/lib.rs
index 3f8bff18..98af01bd 100644
--- a/pagetop-node/src/lib.rs
+++ b/pagetop-node/src/lib.rs
@@ -1,5 +1,7 @@
 use pagetop::prelude::*;
 
+pub const NODE_MODULE: &str = "pagetop-node::module::node";
+
 localize!("src/locales");
 
 //mod entity;
@@ -8,6 +10,10 @@ mod migration;
 pub struct Node;
 
 impl ModuleTrait for Node {
+    fn handler(&self) -> &'static str {
+        NODE_MODULE
+    }
+
     fn name(&self) -> String {
         l("module_name")
     }
diff --git a/pagetop-user/src/lib.rs b/pagetop-user/src/lib.rs
index 557ecdac..8003e707 100644
--- a/pagetop-user/src/lib.rs
+++ b/pagetop-user/src/lib.rs
@@ -1,5 +1,7 @@
 use pagetop::prelude::*;
 
+pub const USER_MODULE: &str = "pagetop-user::module::user";
+
 localize!("src/locales");
 
 mod migration;
@@ -7,6 +9,10 @@ mod migration;
 pub struct User;
 
 impl ModuleTrait for User {
+    fn handler(&self) -> &'static str {
+        USER_MODULE
+    }
+
     fn name(&self) -> String {
         l("module_name")
     }
diff --git a/pagetop/src/api/action/all.rs b/pagetop/src/api/action/all.rs
index 4e301777..cb9bfb8d 100644
--- a/pagetop/src/api/action/all.rs
+++ b/pagetop/src/api/action/all.rs
@@ -1,30 +1,26 @@
 use crate::Lazy;
-use crate::api::TypeId;
 use super::{ActionItem, ActionsHolder};
 
 use std::sync::RwLock;
 use std::collections::HashMap;
 
 // Registered actions.
-static ACTIONS: Lazy<RwLock<HashMap<TypeId, ActionsHolder>>> = Lazy::new(|| {
+static ACTIONS: Lazy<RwLock<HashMap<&str, ActionsHolder>>> = Lazy::new(|| {
     RwLock::new(HashMap::new())
 });
 
 pub fn add_action(action: ActionItem) {
     let mut hmap = ACTIONS.write().unwrap();
-    let action_id = action.type_id();
-    if let Some(actions) = hmap.get_mut(&action_id) {
+    let action_handler = action.handler();
+    if let Some(actions) = hmap.get_mut(action_handler) {
         actions.add(action);
     } else {
-        hmap.insert(action_id, ActionsHolder::new_with(action));
+        hmap.insert(action_handler, ActionsHolder::new_with(action));
     }
 }
 
-pub fn run_actions<B, F>(action_id: TypeId, f: F)
-where
-    F: FnMut(&ActionItem) -> B
-{
-    if let Some(actions) = ACTIONS.read().unwrap().get(&action_id) {
+pub fn run_actions<B, F>(action_handler: &str, f: F) where F: FnMut(&ActionItem) -> B {
+    if let Some(actions) = ACTIONS.read().unwrap().get(action_handler) {
         actions.iter_map(f)
     }
 }
diff --git a/pagetop/src/api/action/definition.rs b/pagetop/src/api/action/definition.rs
index 9acb1258..1c950686 100644
--- a/pagetop/src/api/action/definition.rs
+++ b/pagetop/src/api/action/definition.rs
@@ -3,6 +3,8 @@ pub use std::any::Any as AnyAction;
 pub trait ActionTrait: AnyAction + Send + Sync {
     fn new() -> Self where Self: Sized;
 
+    fn handler(&self) -> &'static str;
+
     fn weight(&self) -> isize {
         0
     }
diff --git a/pagetop/src/api/component/action.rs b/pagetop/src/api/component/action.rs
index d4e1f460..243646cc 100644
--- a/pagetop/src/api/component/action.rs
+++ b/pagetop/src/api/component/action.rs
@@ -1,19 +1,25 @@
 use crate::api::action::{ActionTrait, AnyAction};
 use super::{Assets, ComponentTrait};
 
-pub struct ActionBeforeRenderComponent {
+pub const BEFORE_RENDER_COMPONENT_ACTION: &str = "pagetop::action::before_render_component";
+
+pub struct BeforeRenderComponentAction {
     action: Option<fn(&mut dyn ComponentTrait, &mut Assets)>,
     weight: isize,
 }
 
-impl ActionTrait for ActionBeforeRenderComponent {
+impl ActionTrait for BeforeRenderComponentAction {
     fn new() -> Self {
-        ActionBeforeRenderComponent {
+        BeforeRenderComponentAction {
             action: None,
             weight: 0,
         }
     }
 
+    fn handler(&self) -> &'static str {
+        BEFORE_RENDER_COMPONENT_ACTION
+    }
+
     fn weight(&self) -> isize {
         self.weight
     }
@@ -23,7 +29,7 @@ impl ActionTrait for ActionBeforeRenderComponent {
     }
 }
 
-impl ActionBeforeRenderComponent {
+impl BeforeRenderComponentAction {
     pub fn with_action(mut self, action: fn(&mut dyn ComponentTrait, &mut Assets)) -> Self {
         self.action = Some(action);
         self
diff --git a/pagetop/src/api/component/definition.rs b/pagetop/src/api/component/definition.rs
index 687b4eae..a807a36f 100644
--- a/pagetop/src/api/component/definition.rs
+++ b/pagetop/src/api/component/definition.rs
@@ -1,24 +1,18 @@
 use crate::html::{Markup, html};
-use crate::api::{TypeId, action::{action_ref, run_actions}};
+use crate::api::action::{action_ref, run_actions};
 use crate::util;
-use super::{ActionBeforeRenderComponent, Assets};
+use super::{BEFORE_RENDER_COMPONENT_ACTION, BeforeRenderComponentAction};
+use super::Assets;
 
 pub use std::any::Any as AnyComponent;
 
-pub trait BaseComponent {
-    fn type_name(&self) -> &'static str;
-
-    fn single_name(&self) -> &'static str;
-
-    fn qualified_name(&self, last: usize) -> &'static str;
-}
-
-pub trait ComponentTrait: AnyComponent + BaseComponent + Send + Sync {
-
+pub trait ComponentTrait: AnyComponent + Send + Sync {
     fn new() -> Self where Self: Sized;
 
+    fn handler(&self) -> &'static str;
+
     fn name(&self) -> String {
-        self.single_name().to_owned()
+        util::single_type_name::<Self>().to_owned()
     }
 
     fn description(&self) -> Option<String> {
@@ -47,20 +41,6 @@ pub trait ComponentTrait: AnyComponent + BaseComponent + Send + Sync {
     fn as_mut_any(&mut self) -> &mut dyn AnyComponent;
 }
 
-impl<C: ?Sized + ComponentTrait> BaseComponent for C {
-    fn type_name(&self) -> &'static str {
-        std::any::type_name::<Self>()
-    }
-
-    fn single_name(&self) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), 1)
-    }
-
-    fn qualified_name(&self, last: usize) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), last)
-    }
-}
-
 pub fn component_ref<C: 'static>(component: &dyn ComponentTrait) -> &C {
     component.as_ref_any().downcast_ref::<C>().unwrap()
 }
@@ -75,8 +55,8 @@ pub fn render_component(component: &mut dyn ComponentTrait, assets: &mut Assets)
 
     // Acciones de los módulos antes de renderizar el componente.
     run_actions(
-        TypeId::of::<ActionBeforeRenderComponent>(),
-        |a| action_ref::<ActionBeforeRenderComponent>(&**a).run(component, assets)
+        BEFORE_RENDER_COMPONENT_ACTION,
+        |a| action_ref::<BeforeRenderComponentAction>(&**a).run(component, assets)
     );
 
     // Acciones del tema antes de renderizar el componente.
diff --git a/pagetop/src/api/component/mod.rs b/pagetop/src/api/component/mod.rs
index fe21f1ea..95044f52 100644
--- a/pagetop/src/api/component/mod.rs
+++ b/pagetop/src/api/component/mod.rs
@@ -1,5 +1,8 @@
 mod action;
-pub use action::ActionBeforeRenderComponent;
+pub use action::{
+    BEFORE_RENDER_COMPONENT_ACTION,
+    BeforeRenderComponentAction,
+};
 
 mod assets;
 pub use assets::{
@@ -12,7 +15,6 @@ pub use assets::{
 mod definition;
 pub use definition::{
     AnyComponent,
-    BaseComponent,
     ComponentTrait,
     component_ref,
     component_mut,
diff --git a/pagetop/src/api/mod.rs b/pagetop/src/api/mod.rs
index 8d84af05..b69ec91b 100644
--- a/pagetop/src/api/mod.rs
+++ b/pagetop/src/api/mod.rs
@@ -1,5 +1,3 @@
-pub use std::any::TypeId;
-
 pub mod action;     // API to define functions that alter the behavior of PageTop core.
 pub mod component;  // API para crear nuevos componentes.
 pub mod module;     // API para añadir módulos con nuevas funcionalidades.
diff --git a/pagetop/src/api/module/all.rs b/pagetop/src/api/module/all.rs
index 6c7948de..1bb6ea7d 100644
--- a/pagetop/src/api/module/all.rs
+++ b/pagetop/src/api/module/all.rs
@@ -18,9 +18,9 @@ pub fn register_module(module: &'static dyn ModuleTrait) {
 }
 
 fn add_to(list: &mut Vec<&dyn ModuleTrait>, module: &'static dyn ModuleTrait) {
-    if !MODULES.read().unwrap().iter().any(|m| m.type_name() == module.type_name()) {
-        if !list.iter().any(|m| m.type_name() == module.type_name()) {
-            trace::debug!("Registering \"{}\" module", module.single_name());
+    if !MODULES.read().unwrap().iter().any(|m| m.handler() == module.handler()) {
+        if !list.iter().any(|m| m.handler() == module.handler()) {
+            trace::debug!("Register module: \"{}\"", module.name());
             list.push(module);
 
             let mut dependencies = module.dependencies();
diff --git a/pagetop/src/api/module/definition.rs b/pagetop/src/api/module/definition.rs
index d1c213e3..7ee26e5d 100644
--- a/pagetop/src/api/module/definition.rs
+++ b/pagetop/src/api/module/definition.rs
@@ -1,21 +1,16 @@
-use crate::{app, util};
+use crate::app;
 use crate::api::action::ActionItem;
+use crate::util;
 
 #[cfg(any(feature = "mysql", feature = "postgres", feature = "sqlite"))]
 use crate::db::MigrationItem;
 
-pub trait BaseModule {
-    fn type_name(&self) -> &'static str;
-
-    fn single_name(&self) -> &'static str;
-
-    fn qualified_name(&self, last: usize) -> &'static str;
-}
-
 /// Los módulos deben implementar este *trait*.
-pub trait ModuleTrait: BaseModule + Send + Sync {
+pub trait ModuleTrait: Send + Sync {
+    fn handler(&self) -> &'static str;
+
     fn name(&self) -> String {
-        self.single_name().to_owned()
+        util::single_type_name::<Self>().to_owned()
     }
 
     fn description(&self) -> Option<String> {
@@ -40,17 +35,3 @@ pub trait ModuleTrait: BaseModule + Send + Sync {
         vec![]
     }
 }
-
-impl<M: ?Sized + ModuleTrait> BaseModule for M {
-    fn type_name(&self) -> &'static str {
-        std::any::type_name::<Self>()
-    }
-
-    fn single_name(&self) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), 1)
-    }
-
-    fn qualified_name(&self, last: usize) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), last)
-    }
-}
diff --git a/pagetop/src/api/module/mod.rs b/pagetop/src/api/module/mod.rs
index d1addefe..b4a97393 100644
--- a/pagetop/src/api/module/mod.rs
+++ b/pagetop/src/api/module/mod.rs
@@ -1,10 +1,5 @@
 mod definition;
-pub use definition::{
-    BaseModule,
-    ModuleTrait,
-};
+pub use definition::ModuleTrait;
 
 pub(crate) mod all;
-pub use all::{
-    register_module,
-};
+pub use all::register_module;
diff --git a/pagetop/src/api/theme/all.rs b/pagetop/src/api/theme/all.rs
index 12d96338..b1e47307 100644
--- a/pagetop/src/api/theme/all.rs
+++ b/pagetop/src/api/theme/all.rs
@@ -12,8 +12,8 @@ static THEMES: Lazy<RwLock<Vec<&dyn ThemeTrait>>> = Lazy::new(|| {
 
 pub fn register_theme(theme: &'static dyn ThemeTrait) {
     let mut themes = THEMES.write().unwrap();
-    if !themes.iter().any(|t| t.name() == theme.name()) {
-        trace::debug!("Registering \"{}\" theme", theme.single_name());
+    if !themes.iter().any(|t| t.handler() == theme.handler()) {
+        trace::debug!("Register theme: \"{}\"", theme.name());
         themes.push(theme);
     }
 }
diff --git a/pagetop/src/api/theme/definition.rs b/pagetop/src/api/theme/definition.rs
index b5a12243..6bfa63d5 100644
--- a/pagetop/src/api/theme/definition.rs
+++ b/pagetop/src/api/theme/definition.rs
@@ -6,18 +6,12 @@ use crate::response::page::Page;
 use crate::base::component::Chunck;
 use crate::util;
 
-pub trait BaseTheme {
-    fn type_name(&self) -> &'static str;
-
-    fn single_name(&self) -> &'static str;
-
-    fn qualified_name(&self, last: usize) -> &'static str;
-}
-
 /// Los temas deben implementar este "trait".
-pub trait ThemeTrait: BaseTheme + Send + Sync {
+pub trait ThemeTrait: Send + Sync {
+    fn handler(&self) -> &'static str;
+
     fn name(&self) -> String {
-        self.single_name().to_owned()
+        util::single_type_name::<Self>().to_owned()
     }
 
     fn description(&self) -> Option<String> {
@@ -93,8 +87,8 @@ pub trait ThemeTrait: BaseTheme + Send + Sync {
     /*
         Cómo usarlo:
 
-        match component.single_name() {
-            "Block" => {
+        match component.handler() {
+            BLOCK_COMPONENT => {
                 let block = component_mut::<Block>(component);
                 block.alter_title("New title");
             },
@@ -113,8 +107,8 @@ pub trait ThemeTrait: BaseTheme + Send + Sync {
     /*
         Cómo usarlo:
 
-        match component.single_name() {
-            "Block" => {
+        match component.handler() {
+            BLOCK_COMPONENT => {
                 let block = component_ref::<Block>(component);
                 match block.template() {
                     "default" => Some(block_default(block)),
@@ -137,17 +131,3 @@ pub trait ThemeTrait: BaseTheme + Send + Sync {
             .render()
     }
 }
-
-impl<T: ?Sized + ThemeTrait> BaseTheme for T {
-    fn type_name(&self) -> &'static str {
-        std::any::type_name::<Self>()
-    }
-
-    fn single_name(&self) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), 1)
-    }
-
-    fn qualified_name(&self, last: usize) -> &'static str {
-        util::partial_type_name(std::any::type_name::<Self>(), last)
-    }
-}
diff --git a/pagetop/src/api/theme/mod.rs b/pagetop/src/api/theme/mod.rs
index f76d1fe3..4456189e 100644
--- a/pagetop/src/api/theme/mod.rs
+++ b/pagetop/src/api/theme/mod.rs
@@ -1,8 +1,5 @@
 mod definition;
-pub use definition::{
-    BaseTheme,
-    ThemeTrait,
-};
+pub use definition::ThemeTrait;
 
 pub(crate) mod all;
 pub use all::{
diff --git a/pagetop/src/base/component/block.rs b/pagetop/src/base/component/block.rs
index df209ea9..dafe4497 100644
--- a/pagetop/src/base/component/block.rs
+++ b/pagetop/src/base/component/block.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_BLOCK: &str = "pagetop::base::component::block::Block";
+pub const BLOCK_COMPONENT: &str = "pagetop::component::block";
 
 pub struct Block {
     renderable: fn() -> bool,
@@ -25,6 +25,10 @@ impl ComponentTrait for Block {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        BLOCK_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
@@ -34,7 +38,7 @@ impl ComponentTrait for Block {
     }
 
     fn default_render(&self, assets: &mut Assets) -> Markup {
-        let id = assets.serial_id(self.single_name(), self.id());
+        let id = assets.serial_id("block", self.id());
         html! {
             div id=(id) class=[self.classes()] {
                 @match self.title() {
diff --git a/pagetop/src/base/component/chunck.rs b/pagetop/src/base/component/chunck.rs
index a772af1d..c7d8a978 100644
--- a/pagetop/src/base/component/chunck.rs
+++ b/pagetop/src/base/component/chunck.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_CHUNCK: &str = "pagetop::base::component::chunck::Chunck";
+pub const CHUNCK_COMPONENT: &str = "pagetop::component::chunck";
 
 pub struct Chunck {
     renderable: fn() -> bool,
@@ -19,6 +19,10 @@ impl ComponentTrait for Chunck {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        CHUNCK_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/container.rs b/pagetop/src/base/component/container.rs
index dd2508ad..e275f255 100644
--- a/pagetop/src/base/component/container.rs
+++ b/pagetop/src/base/component/container.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_CONTAINER: &str = "pagetop::base::component::container::Container";
+pub const CONTAINER_COMPONENT: &str = "pagetop::component::container";
 
 pub enum ContainerType { Header, Footer, Main, Section, Wrapper }
 
@@ -29,6 +29,10 @@ impl ComponentTrait for Container {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        CONTAINER_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/form/button.rs b/pagetop/src/base/component/form/button.rs
index 47f2e9ca..fc7fe620 100644
--- a/pagetop/src/base/component/form/button.rs
+++ b/pagetop/src/base/component/form/button.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_BUTTON: &str = "pagetop::base::component::form::button::Button";
+pub const BUTTON_COMPONENT: &str = "pagetop::component::form::button";
 
 pub enum ButtonType {Button, Reset, Submit}
 
@@ -32,6 +32,10 @@ impl ComponentTrait for Button {
         .with_classes("form-button", ClassesOp::AddFirst)
     }
 
+    fn handler(&self) -> &'static str {
+        BUTTON_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/form/date.rs b/pagetop/src/base/component/form/date.rs
index e9741120..eeb1d7aa 100644
--- a/pagetop/src/base/component/form/date.rs
+++ b/pagetop/src/base/component/form/date.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_DATE: &str = "pagetop::base::component::form::date::Date";
+pub const DATE_COMPONENT: &str = "pagetop::component::form::date";
 
 pub struct Date {
     renderable  : fn() -> bool,
@@ -40,6 +40,10 @@ impl ComponentTrait for Date {
         .with_classes("form-type-date", ClassesOp::AddFirst)
     }
 
+    fn handler(&self) -> &'static str {
+        DATE_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/form/form.rs b/pagetop/src/base/component/form/form.rs
index 70a9caf6..dcf209b0 100644
--- a/pagetop/src/base/component/form/form.rs
+++ b/pagetop/src/base/component/form/form.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_FORM: &str = "pagetop::base::component::form::form::Form";
+pub const FORM_COMPONENT: &str = "pagetop::component::form";
 
 pub enum FormMethod {Get, Post}
 
@@ -31,6 +31,10 @@ impl ComponentTrait for Form {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        FORM_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/form/hidden.rs b/pagetop/src/base/component/form/hidden.rs
index c837d0a8..c8d86131 100644
--- a/pagetop/src/base/component/form/hidden.rs
+++ b/pagetop/src/base/component/form/hidden.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_HIDDEN: &str = "pagetop::base::component::form::hidden::Hidden";
+pub const HIDDEN_COMPONENT: &str = "pagetop::component::form::hidden";
 
 pub struct Hidden {
     weight: isize,
@@ -17,6 +17,10 @@ impl ComponentTrait for Hidden {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        HIDDEN_COMPONENT
+    }
+
     fn weight(&self) -> isize {
         self.weight
     }
diff --git a/pagetop/src/base/component/form/input.rs b/pagetop/src/base/component/form/input.rs
index a7168097..d1614aa3 100644
--- a/pagetop/src/base/component/form/input.rs
+++ b/pagetop/src/base/component/form/input.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_INPUT: &str = "pagetop::base::component::form::input::Input";
+pub const INPUT_COMPONENT: &str = "pagetop::component::form::input";
 
 pub enum InputType {Email, Password, Search, Telephone, Textfield, Url}
 
@@ -50,6 +50,10 @@ impl ComponentTrait for Input {
         .with_classes("form-type-textfield", ClassesOp::AddFirst)
     }
 
+    fn handler(&self) -> &'static str {
+        INPUT_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/form/mod.rs b/pagetop/src/base/component/form/mod.rs
index d8df6d2d..4e35a9d4 100644
--- a/pagetop/src/base/component/form/mod.rs
+++ b/pagetop/src/base/component/form/mod.rs
@@ -1,21 +1,21 @@
 mod form;
 pub use form::{
-    TYPENAME_FORM, Form, FormMethod
+    FORM_COMPONENT, Form, FormMethod
 };
 
 mod input;
 pub use input::{
-    TYPENAME_INPUT, Input, InputType
+    INPUT_COMPONENT, Input, InputType
 };
 mod hidden;
 pub use hidden::{
-    TYPENAME_HIDDEN, Hidden
+    HIDDEN_COMPONENT, Hidden
 };
 mod date;
 pub use date::{
-    TYPENAME_DATE, Date
+    DATE_COMPONENT, Date
 };
 mod button;
 pub use button::{
-    TYPENAME_BUTTON, Button, ButtonType
+    BUTTON_COMPONENT, Button, ButtonType
 };
diff --git a/pagetop/src/base/component/grid/column.rs b/pagetop/src/base/component/grid/column.rs
index 8199c986..a69edce7 100644
--- a/pagetop/src/base/component/grid/column.rs
+++ b/pagetop/src/base/component/grid/column.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_COLUMN: &str = "pagetop::base::component::grid::column::Column";
+pub const COLUMN_COMPONENT: &str = "pagetop::component::grid::column";
 
 pub struct Column {
     renderable: fn() -> bool,
@@ -23,6 +23,10 @@ impl ComponentTrait for Column {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        COLUMN_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/grid/mod.rs b/pagetop/src/base/component/grid/mod.rs
index e63ea7cd..4fd8936b 100644
--- a/pagetop/src/base/component/grid/mod.rs
+++ b/pagetop/src/base/component/grid/mod.rs
@@ -1,8 +1,8 @@
 mod row;
 pub use row::{
-    TYPENAME_ROW, Row
+    ROW_COMPONENT, Row
 };
 mod column;
 pub use column::{
-    TYPENAME_COLUMN, Column
+    COLUMN_COMPONENT, Column
 };
diff --git a/pagetop/src/base/component/grid/row.rs b/pagetop/src/base/component/grid/row.rs
index a366cf7a..05fae1cf 100644
--- a/pagetop/src/base/component/grid/row.rs
+++ b/pagetop/src/base/component/grid/row.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_ROW: &str = "pagetop::base::component::grid::row::Row";
+pub const ROW_COMPONENT: &str = "pagetop::component::grid::row";
 
 pub struct Row {
     renderable: fn() -> bool,
@@ -23,6 +23,10 @@ impl ComponentTrait for Row {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        ROW_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/image.rs b/pagetop/src/base/component/image.rs
index efb647c2..300cafc2 100644
--- a/pagetop/src/base/component/image.rs
+++ b/pagetop/src/base/component/image.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-pub const TYPENAME_IMAGE: &str = "pagetop::base::component::image::Image";
+pub const IMAGE_COMPONENT: &str = "pagetop::component::image";
 
 pub struct Image {
     renderable: fn() -> bool,
@@ -23,6 +23,10 @@ impl ComponentTrait for Image {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        IMAGE_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
diff --git a/pagetop/src/base/component/menu.rs b/pagetop/src/base/component/menu.rs
index 9b416daf..0434b90f 100644
--- a/pagetop/src/base/component/menu.rs
+++ b/pagetop/src/base/component/menu.rs
@@ -1,7 +1,7 @@
 use crate::prelude::*;
 
-pub const TYPENAME_MENU: &str = "pagetop::base::component::menu::Menu";
-pub const TYPENAME_MENUITEM: &str = "pagetop::base::component::menu::MenuItem";
+pub const MENU_COMPONENT: &str = "pagetop::component::menu";
+pub const MENUITEM_COMPONENT: &str = "pagetop::component::menu";
 
 pub enum MenuItemType {
     Label(String),
@@ -30,6 +30,10 @@ impl ComponentTrait for MenuItem {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        MENUITEM_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
@@ -190,6 +194,10 @@ impl ComponentTrait for Menu {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        MENU_COMPONENT
+    }
+
     fn is_renderable(&self) -> bool {
         (self.renderable)()
     }
@@ -211,7 +219,7 @@ impl ComponentTrait for Menu {
             ))
             .add_jquery();
 
-        let id = assets.serial_id(self.single_name(), self.id());
+        let id = assets.serial_id("menu", self.id());
         html! {
             ul id=(id) class=[self.classes()] {
                 (self.items().render(assets))
diff --git a/pagetop/src/base/component/mod.rs b/pagetop/src/base/component/mod.rs
index 032fd625..14759dc8 100644
--- a/pagetop/src/base/component/mod.rs
+++ b/pagetop/src/base/component/mod.rs
@@ -1,28 +1,28 @@
 mod container;
 pub use container::{
-    TYPENAME_CONTAINER, Container, ContainerType
+    CONTAINER_COMPONENT, Container, ContainerType
 };
 
 pub mod grid;
 
 mod chunck;
 pub use chunck::{
-    TYPENAME_CHUNCK, Chunck
+    CHUNCK_COMPONENT, Chunck
 };
 mod block;
 pub use block::{
-    TYPENAME_BLOCK, Block
+    BLOCK_COMPONENT, Block
 };
 mod image;
 pub use image::{
-    TYPENAME_IMAGE, Image
+    IMAGE_COMPONENT, Image
 };
 mod menu;
 pub use menu::{
-    TYPENAME_MENU, TYPENAME_MENUITEM, Menu, MenuItem, MenuItemType
+    MENU_COMPONENT, MENUITEM_COMPONENT, Menu, MenuItem, MenuItemType
 };
 
 pub mod form;
 pub use form::{
-    TYPENAME_FORM, Form, FormMethod
+    FORM_COMPONENT, Form, FormMethod
 };
diff --git a/pagetop/src/base/module/demopage/mod.rs b/pagetop/src/base/module/demopage/mod.rs
index 55ed6d56..343b00a0 100644
--- a/pagetop/src/base/module/demopage/mod.rs
+++ b/pagetop/src/base/module/demopage/mod.rs
@@ -1,10 +1,16 @@
 use crate::prelude::*;
 
+pub const DEMOPAGE_MODULE: &str = "pagetop::module::demopage";
+
 localize!("src/base/module/demopage/locales");
 
 pub struct Demopage;
 
 impl ModuleTrait for Demopage {
+    fn handler(&self) -> &'static str {
+        DEMOPAGE_MODULE
+    }
+
     fn name(&self) -> String {
         l("module_name")
     }
diff --git a/pagetop/src/base/theme/aliner/mod.rs b/pagetop/src/base/theme/aliner/mod.rs
index 6936a019..f3c90f9b 100644
--- a/pagetop/src/base/theme/aliner/mod.rs
+++ b/pagetop/src/base/theme/aliner/mod.rs
@@ -1,10 +1,16 @@
 use crate::prelude::*;
 
+pub const ALINER_THEME: &str = "pagetop::theme::aliner";
+
 include!(concat!(env!("OUT_DIR"), "/aliner.rs"));
 
 pub struct Aliner;
 
 impl ThemeTrait for Aliner {
+    fn handler(&self) -> &'static str {
+        ALINER_THEME
+    }
+
     fn configure_theme(&self, cfg: &mut app::web::ServiceConfig) {
         theme_static_files!(cfg, "/aliner");
     }
diff --git a/pagetop/src/base/theme/bootsier/mod.rs b/pagetop/src/base/theme/bootsier/mod.rs
index 0445356b..a8be7118 100644
--- a/pagetop/src/base/theme/bootsier/mod.rs
+++ b/pagetop/src/base/theme/bootsier/mod.rs
@@ -1,5 +1,7 @@
 use crate::prelude::*;
 
+pub const BOOTSIER_THEME: &str = "pagetop::theme::bootsier";
+
 include!(concat!(env!("OUT_DIR"), "/bootsier.rs"));
 
 localize!("src/base/theme/bootsier/locales");
@@ -7,6 +9,10 @@ localize!("src/base/theme/bootsier/locales");
 pub struct Bootsier;
 
 impl ThemeTrait for Bootsier {
+    fn handler(&self) -> &'static str {
+        BOOTSIER_THEME
+    }
+
     fn configure_theme(&self, cfg: &mut app::web::ServiceConfig) {
         theme_static_files!(cfg, "/bootsier");
     }
diff --git a/pagetop/src/base/theme/bulmix/mod.rs b/pagetop/src/base/theme/bulmix/mod.rs
index 1a36fe7d..477dbbf7 100644
--- a/pagetop/src/base/theme/bulmix/mod.rs
+++ b/pagetop/src/base/theme/bulmix/mod.rs
@@ -1,10 +1,16 @@
 use crate::prelude::*;
 
+pub const BULMIX_THEME: &str = "pagetop::theme::bulmix";
+
 include!(concat!(env!("OUT_DIR"), "/bulmix.rs"));
 
 pub struct Bulmix;
 
 impl ThemeTrait for Bulmix {
+    fn handler(&self) -> &'static str {
+        BULMIX_THEME
+    }
+
     fn configure_theme(&self, cfg: &mut app::web::ServiceConfig) {
         theme_static_files!(cfg, "/bulmix");
     }
@@ -29,12 +35,12 @@ impl ThemeTrait for Bulmix {
         component: &mut dyn ComponentTrait,
         _assets: &mut Assets
     ) {
-        match component.type_name() {
-            grid::TYPENAME_ROW => {
+        match component.handler() {
+            grid::ROW_COMPONENT => {
                 let row = component_mut::<grid::Row>(component);
                 row.alter_classes("columns", ClassesOp::SetDefault);
             },
-            grid::TYPENAME_COLUMN => {
+            grid::COLUMN_COMPONENT => {
                 let col = component_mut::<grid::Column>(component);
                 col.alter_classes("column", ClassesOp::SetDefault);
             },
diff --git a/pagetop/src/base/theme/minimal/mod.rs b/pagetop/src/base/theme/minimal/mod.rs
index d2124fb6..e86e1719 100644
--- a/pagetop/src/base/theme/minimal/mod.rs
+++ b/pagetop/src/base/theme/minimal/mod.rs
@@ -1,6 +1,11 @@
 use crate::prelude::*;
 
+pub const MINIMAL_THEME: &str = "pagetop::theme::minimal";
+
 pub struct Minimal;
 
 impl ThemeTrait for Minimal {
+    fn handler(&self) -> &'static str {
+        MINIMAL_THEME
+    }
 }
diff --git a/pagetop/src/prelude.rs b/pagetop/src/prelude.rs
index a20d1563..357c31cf 100644
--- a/pagetop/src/prelude.rs
+++ b/pagetop/src/prelude.rs
@@ -21,7 +21,6 @@ pub use crate::{
 };
 
 pub use crate::{action_item, api::{
-    TypeId,
     action::*,
     component::*,
     module::*,
diff --git a/pagetop/src/response/page/action.rs b/pagetop/src/response/page/action.rs
index 7fe35a7f..7869987c 100644
--- a/pagetop/src/response/page/action.rs
+++ b/pagetop/src/response/page/action.rs
@@ -1,6 +1,8 @@
 use crate::api::action::{ActionTrait, AnyAction};
 use super::Page;
 
+pub const BEFORE_RENDER_PAGE_ACTION: &str = "pagetop::action::before_render_page";
+
 pub struct ActionBeforeRenderPage {
     action: Option<fn(&mut Page)>,
     weight: isize,
@@ -14,6 +16,10 @@ impl ActionTrait for ActionBeforeRenderPage {
         }
     }
 
+    fn handler(&self) -> &'static str {
+        BEFORE_RENDER_PAGE_ACTION
+    }
+
     fn weight(&self) -> isize {
         self.weight
     }
diff --git a/pagetop/src/response/page/mod.rs b/pagetop/src/response/page/mod.rs
index 30f95d72..e08e55f0 100644
--- a/pagetop/src/response/page/mod.rs
+++ b/pagetop/src/response/page/mod.rs
@@ -1,5 +1,8 @@
 mod action;
-pub use action::ActionBeforeRenderPage;
+pub use action::{
+    BEFORE_RENDER_PAGE_ACTION,
+    ActionBeforeRenderPage,
+};
 
 mod page;
 pub use page::Page;
diff --git a/pagetop/src/response/page/page.rs b/pagetop/src/response/page/page.rs
index 99a81cb3..a4fc741b 100644
--- a/pagetop/src/response/page/page.rs
+++ b/pagetop/src/response/page/page.rs
@@ -1,9 +1,9 @@
 use crate::{Lazy, app, trace};
 use crate::config::SETTINGS;
 use crate::html::*;
-use crate::api::{TypeId, action::{action_ref, run_actions}};
+use crate::api::action::{action_ref, run_actions};
 use crate::api::component::*;
-use super::ActionBeforeRenderPage;
+use super::{BEFORE_RENDER_PAGE_ACTION, ActionBeforeRenderPage};
 
 use std::collections::HashMap;
 
@@ -152,7 +152,7 @@ impl<'a> Page<'a> {
     pub fn render(&mut self) -> app::Result<Markup> {
         // Acciones de los módulos antes de renderizar la página.
         run_actions(
-            TypeId::of::<ActionBeforeRenderPage>(),
+            BEFORE_RENDER_PAGE_ACTION,
             |a| action_ref::<ActionBeforeRenderPage>(&**a).run(self)
         );
 
diff --git a/pagetop/src/util.rs b/pagetop/src/util.rs
index f87b67fc..f4f683bf 100644
--- a/pagetop/src/util.rs
+++ b/pagetop/src/util.rs
@@ -46,3 +46,7 @@ pub fn partial_type_name(type_name: &'static str, last: usize) -> &'static str {
     }
     &type_name[(positions[last - 1].0 + 2)..]
 }
+
+pub fn single_type_name<T: ?Sized>() -> &'static str {
+    partial_type_name(std::any::type_name::<T>(), 1)
+}