From 824024b96db0b63801f8a4cd0b2e4c5d2f944e68 Mon Sep 17 00:00:00 2001
From: Manuel Cillero <manuel@cillero.es>
Date: Mon, 8 Sep 2025 18:57:09 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20[context]=20A=C3=B1ade=20m=C3=A9tod?=
 =?UTF-8?q?os=20auxiliares=20de=20par=C3=A1metros?=
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---
 src/html/context.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/html/context.rs b/src/html/context.rs
index 79148b0..26e2478 100644
--- a/src/html/context.rs
+++ b/src/html/context.rs
@@ -118,6 +118,21 @@ pub trait Contextual: LangId {
     /// Recupera un parámetro como [`Option`].
     fn param<T: 'static>(&self, key: &'static str) -> Option<&T>;
 
+    /// Devuelve el parámetro clonado o el **valor por defecto del tipo** (`T::default()`).
+    fn param_or_default<T: Default + Clone + 'static>(&self, key: &'static str) -> T {
+        self.param::<T>(key).cloned().unwrap_or_default()
+    }
+
+    /// Devuelve el parámetro clonado o un **valor por defecto** si no existe.
+    fn param_or<T: Clone + 'static>(&self, key: &'static str, default: T) -> T {
+        self.param::<T>(key).cloned().unwrap_or(default)
+    }
+
+    /// Devuelve el parámetro clonado o el **valor evaluado** por la función `f` si no existe.
+    fn param_or_else<T: Clone + 'static, F: FnOnce() -> T>(&self, key: &'static str, f: F) -> T {
+        self.param::<T>(key).cloned().unwrap_or_else(f)
+    }
+
     /// Devuelve el Favicon de los recursos del contexto.
     fn favicon(&self) -> Option<&Favicon>;