diff --git a/src/frontend/item.rs b/src/frontend/item.rs
index c5f8730..d031581 100644
--- a/src/frontend/item.rs
+++ b/src/frontend/item.rs
@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 use std::collections::HashMap;
+use std::fmt::Display;
 
 use actix_identity::Identity;
 use actix_web::{error, get, post, web, HttpRequest, Responder};
@@ -313,7 +314,7 @@ async fn add_form(
                     name: "name",
                     title: "Name",
                     optional: true,
-                    value: form.name.clone(),
+                    value: form.name.as_ref().map(|s| s as &dyn Display),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -321,7 +322,7 @@ async fn add_form(
                     name: "class",
                     title: "Class",
                     required: true,
-                    value: form.class.map(|id| id.to_string()),
+                    value: form.class.as_ref().map(|id| id as &dyn Display),
                     datalist: Some(&datalist_item_classes),
                     ..Default::default()
                 })
@@ -330,7 +331,7 @@ async fn add_form(
                     name: "parent",
                     title: "Parent",
                     optional: true,
-                    value: form.parent.map(|id| id.to_string()),
+                    value: form.parent.as_ref().map(|id| id as &dyn Display),
                     datalist: Some(&datalist_items),
                     ..Default::default()
                 })
@@ -340,7 +341,7 @@ async fn add_form(
                     title: "Original Packaging",
                     optional: true,
                     disabled: true,
-                    value: form.original_packaging.map(|id| id.to_string()),
+                    value: form.original_packaging.as_ref().map(|id| id as &dyn Display),
                     datalist: Some(&datalist_items),
                     ..Default::default()
                 })
@@ -348,7 +349,7 @@ async fn add_form(
                     r#type: forms::InputType::Textarea,
                     name: "description",
                     title: "Description ",
-                    value: form.description.clone(),
+                    value: form.description.as_ref().map(|s| s as &dyn Display),
                     ..Default::default()
                 })
 
@@ -463,7 +464,7 @@ async fn edit_form(
                     title: "UUID",
                     required: true,
                     disabled: true,
-                    value: Some(item.id.to_string()),
+                    value: Some(&item.id),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -472,7 +473,7 @@ async fn edit_form(
                     title: "Name",
                     optional: true,
                     disabled: item.name.is_none(),
-                    value: item.name,
+                    value: item.name.as_ref().map(|s| s as &dyn Display),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -480,7 +481,7 @@ async fn edit_form(
                     name: "class",
                     title: "Class",
                     required: true,
-                    value: Some(item.class.to_string()),
+                    value: Some(&item.class),
                     datalist: Some(&datalist_item_classes),
                     ..Default::default()
                 })
@@ -489,7 +490,7 @@ async fn edit_form(
                     name: "parent",
                     title: "Parent",
                     optional: true,
-                    value: item.parent.map(|id| id.to_string()),
+                    value: item.parent.as_ref().map(|id| id as &dyn Display),
                     disabled: item.parent.is_none(),
                     datalist: Some(&datalist_items),
                     ..Default::default()
@@ -499,7 +500,7 @@ async fn edit_form(
                     name: "original_packaging",
                     title: "Original Packaging",
                     optional: true,
-                    value: item.original_packaging.map(|id| id.to_string()),
+                    value: item.original_packaging.as_ref().map(|id| id as &dyn Display),
                     disabled: item.original_packaging.is_none(),
                     datalist: Some(&datalist_items),
                     ..Default::default()
@@ -508,7 +509,7 @@ async fn edit_form(
                     r#type: forms::InputType::Textarea,
                     name: "description",
                     title: "Description ",
-                    value: Some(item.description),
+                    value: Some(&item.description),
                     ..Default::default()
                 })
 
diff --git a/src/frontend/item_class.rs b/src/frontend/item_class.rs
index f1ff11d..08a800b 100644
--- a/src/frontend/item_class.rs
+++ b/src/frontend/item_class.rs
@@ -2,6 +2,8 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+use std::fmt::Display;
+
 use actix_identity::Identity;
 use actix_web::{error, get, post, web, Responder};
 use maud::html;
@@ -258,7 +260,7 @@ async fn add_form(
                     name: "name",
                     title: "Name",
                     required: true,
-                    value: form.name.clone(),
+                    value: form.name.as_ref().map(|s| s as &dyn Display),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -267,7 +269,7 @@ async fn add_form(
                     title: "Parent",
                     optional: true,
                     disabled: form.parent.is_none(),
-                    value: form.parent.map(|id| id.to_string()),
+                    value: form.parent.as_ref().map(|id| id as &dyn Display),
                     datalist: Some(&datalist_item_classes),
                     ..Default::default()
                 })
@@ -275,7 +277,7 @@ async fn add_form(
                     r#type: forms::InputType::Textarea,
                     name: "description",
                     title: "Description ",
-                    value: form.description.clone(),
+                    value: form.description.as_ref().map(|s| s as &dyn Display),
                     ..Default::default()
                 })
 
@@ -341,7 +343,7 @@ async fn edit_form(
                     title: "UUID",
                     disabled: true,
                     required: true,
-                    value: Some(item_class.id.to_string()),
+                    value: Some(&item_class.id),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -349,7 +351,7 @@ async fn edit_form(
                     name: "name",
                     title: "Name",
                     required: true,
-                    value: Some(item_class.name),
+                    value: Some(&item_class.name),
                     ..Default::default()
                 })
                 (forms::InputGroup {
@@ -358,7 +360,7 @@ async fn edit_form(
                     title: "Parent",
                     optional: true,
                     disabled: item_class.parent.is_none(),
-                    value: item_class.parent.map(|id| id.to_string()),
+                    value: item_class.parent.as_ref().map(|id| id as &dyn Display),
                     datalist: Some(&datalist_item_classes),
                     ..Default::default()
                 })
@@ -366,7 +368,7 @@ async fn edit_form(
                     r#type: forms::InputType::Textarea,
                     name: "description",
                     title: "Description ",
-                    value: Some(item_class.description),
+                    value: Some(&item_class.description),
                     ..Default::default()
                 })
 
diff --git a/src/frontend/templates/forms.rs b/src/frontend/templates/forms.rs
index 81f7328..5c863cc 100644
--- a/src/frontend/templates/forms.rs
+++ b/src/frontend/templates/forms.rs
@@ -2,7 +2,7 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-use std::fmt;
+use std::fmt::{self, Display};
 
 use maud::{html, Markup, Render};
 
@@ -14,7 +14,7 @@ pub enum InputType {
     Textarea,
 }
 
-impl fmt::Display for InputType {
+impl Display for InputType {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             Self::Text => write!(f, "text"),
@@ -30,7 +30,7 @@ pub struct InputGroup<'a> {
     pub required: bool,
     pub optional: bool,
     pub disabled: bool,
-    pub value: Option<String>,
+    pub value: Option<&'a dyn Display>,
     pub datalist: Option<&'a Datalist>,
 }
 
@@ -60,7 +60,7 @@ impl InputGroup<'_> {
                     required[self.required || force_required]
                     disabled[self.disabled]
                     rows="5" // FIXME hardcoded
-                    { (self.value.as_ref().unwrap_or(&"".to_string())) },
+                    { (self.value.unwrap_or(&"")) },
                 _ => input
                     .form-control
                     #(self.name)
diff --git a/src/frontend/templates/mod.rs b/src/frontend/templates/mod.rs
index a29f208..0c6bf51 100644
--- a/src/frontend/templates/mod.rs
+++ b/src/frontend/templates/mod.rs
@@ -68,7 +68,7 @@ fn footer() -> Markup {
 pub struct TemplateConfig<'a> {
     pub path: &'a str,
     pub title: Option<&'a str>,
-    pub page_title: Option<Box<dyn Render>>,
+    pub page_title: Option<Box<dyn Render + 'a>>,
     pub page_actions: Vec<PageActionGroup>,
     pub extra_css: Vec<Css<'a>>,
     pub extra_js: Vec<Js<'a>>,