refactor: deduplicate update handlers and edit templates

Add HasChanges trait with impl_has_changes! macro, validate_update()
and update_response() helpers to reduce boilerplate across all 7 entity
update handlers. Extract edit form actions (error, spinner, buttons)
into a shared Askama macro. Also adds missing no-changes validation
to the bag update handler.

src/application/routes/api/coffee/bags.rs

@@ -11,7 +11,8 @@ use crate::application::errors::{ApiError, AppError};
 use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{define_delete_handler, define_enriched_get_handler};
 use crate::application::routes::support::{
-    FlexiblePayload, ListQuery, PayloadSource, is_datastar_request,
+    FlexiblePayload, ListQuery, PayloadSource, impl_has_changes, is_datastar_request,
+    validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::bags::{BagFilter, BagSortKey, BagWithRoast, NewBag, UpdateBag};
@@ -156,6 +157,17 @@ impl UpdateBagSubmission {
     }
 }
 
+impl_has_changes!(
+    UpdateBag,
+    roast_id,
+    roast_date,
+    amount,
+    remaining,
+    closed,
+    finished_at,
+    created_at
+);
+
 #[tracing::instrument(skip(state, _auth_user, headers, query, payload))]
 pub(crate) async fn update_bag(
     State(state): State<AppState>,
@@ -180,6 +192,8 @@ pub(crate) async fn update_bag(
         created_at: body_update.created_at,
     };
 
+    validate_update(&update, image_data_url.as_ref())?;
+
     // When the bag amount changes, recompute remaining based on how much has been consumed.
     if let Some(new_amount) = update.amount
         && update.remaining.is_none()

src/application/routes/api/coffee/brews.rs

@@ -11,7 +11,8 @@ use crate::application::errors::{ApiError, AppError};
 use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{define_delete_handler, define_enriched_get_handler};
 use crate::application::routes::support::{
-    FlexiblePayload, ListQuery, PayloadSource, is_datastar_request,
+    FlexiblePayload, ListQuery, PayloadSource, impl_has_changes, is_datastar_request,
+    validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::bags::BagFilter;
@@ -375,6 +376,21 @@ impl UpdateBrewSubmission {
     }
 }
 
+impl_has_changes!(
+    UpdateBrew,
+    bag_id,
+    coffee_weight,
+    grinder_id,
+    grind_setting,
+    brewer_id,
+    filter_paper_id,
+    water_volume,
+    water_temp,
+    quick_notes,
+    brew_time,
+    created_at
+);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_brew(
     State(state): State<AppState>,
@@ -386,22 +402,7 @@ pub(crate) async fn update_brew(
     let (submission, source) = payload.into_parts();
     let (update, image_data_url) = submission.into_parts();
 
-    let has_changes = update.bag_id.is_some()
-        || update.coffee_weight.is_some()
-        || update.grinder_id.is_some()
-        || update.grind_setting.is_some()
-        || update.brewer_id.is_some()
-        || update.filter_paper_id.is_some()
-        || update.water_volume.is_some()
-        || update.water_temp.is_some()
-        || update.quick_notes.is_some()
-        || update.brew_time.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     state
         .brew_repo
@@ -414,12 +415,6 @@ pub(crate) async fn update_brew(
 
     save_deferred_image(&state, "brew", i64::from(id), image_data_url.as_deref()).await;
 
-    let enriched = state
-        .brew_repo
-        .get_with_details(id)
-        .await
-        .map_err(AppError::from)?;
-
     let detail_url = format!("/brews/{id}");
 
     if is_datastar_request(&headers) {
@@ -428,6 +423,11 @@ pub(crate) async fn update_brew(
     } else if matches!(source, PayloadSource::Form) {
         Ok(Redirect::to(&detail_url).into_response())
     } else {
+        let enriched = state
+            .brew_repo
+            .get_with_details(id)
+            .await
+            .map_err(AppError::from)?;
         Ok(Json(enriched).into_response())
     }
 }

src/application/routes/api/coffee/cafes.rs

@@ -10,8 +10,10 @@ use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{
     define_delete_handler, define_get_handler, define_list_fragment_renderer,
 };
+use crate::application::routes::support::impl_has_changes;
 use crate::application::routes::support::{
     FlexiblePayload, ListQuery, PayloadSource, is_datastar_request, render_redirect_script,
+    update_response, validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::cafes::{Cafe, CafeSortKey, NewCafe, UpdateCafe};
@@ -175,6 +177,10 @@ impl UpdateCafeSubmission {
     }
 }
 
+impl_has_changes!(
+    UpdateCafe, name, city, country, latitude, longitude, website, created_at
+);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_cafe(
     State(state): State<AppState>,
@@ -186,18 +192,7 @@ pub(crate) async fn update_cafe(
     let (submission, source) = payload.into_parts();
     let (update, image_data_url) = submission.into_parts();
 
-    let has_changes = update.name.is_some()
-        || update.city.is_some()
-        || update.country.is_some()
-        || update.latitude.is_some()
-        || update.longitude.is_some()
-        || update.website.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     let cafe = state
         .cafe_repo
@@ -216,14 +211,7 @@ pub(crate) async fn update_cafe(
     .await;
 
     let detail_url = format!("/cafes/{}", cafe.slug);
-
-    if is_datastar_request(&headers) {
-        render_redirect_script(&detail_url).map_err(ApiError::from)
-    } else if matches!(source, PayloadSource::Form) {
-        Ok(Redirect::to(&detail_url).into_response())
-    } else {
-        Ok(Json(cafe).into_response())
-    }
+    update_response(&headers, source, &detail_url, Json(cafe).into_response())
 }
 
 define_delete_handler!(

src/application/routes/api/coffee/cups.rs

@@ -11,8 +11,10 @@ use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{
     define_delete_handler, define_enriched_get_handler, define_list_fragment_renderer,
 };
+use crate::application::routes::support::impl_has_changes;
 use crate::application::routes::support::{
     FlexiblePayload, ListQuery, PayloadSource, is_datastar_request, render_redirect_script,
+    validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::cups::{CupFilter, CupSortKey, CupWithDetails, NewCup, UpdateCup};
@@ -116,6 +118,8 @@ impl UpdateCupSubmission {
     }
 }
 
+impl_has_changes!(UpdateCup, roast_id, cafe_id, created_at);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_cup(
     State(state): State<AppState>,
@@ -127,14 +131,7 @@ pub(crate) async fn update_cup(
     let (submission, source) = payload.into_parts();
     let (update, image_data_url) = submission.into_parts();
 
-    let has_changes = update.roast_id.is_some()
-        || update.cafe_id.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     let cup = state
         .cup_repo

src/application/routes/api/coffee/gear.rs

@@ -14,8 +14,10 @@ use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{
     define_delete_handler, define_get_handler, define_list_fragment_renderer,
 };
+use crate::application::routes::support::impl_has_changes;
 use crate::application::routes::support::{
     FlexiblePayload, ListQuery, PayloadSource, is_datastar_request, render_redirect_script,
+    update_response, validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::gear::{Gear, GearCategory, GearFilter, GearSortKey, NewGear, UpdateGear};
@@ -148,6 +150,8 @@ impl UpdateGearSubmission {
     }
 }
 
+impl_has_changes!(UpdateGear, make, model, created_at);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_gear(
     State(state): State<AppState>,
@@ -159,14 +163,7 @@ pub(crate) async fn update_gear(
     let (submission, source) = payload.into_parts();
     let (update, image_data_url) = submission.into_parts();
 
-    let has_changes = update.make.is_some()
-        || update.model.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     let gear = state
         .gear_repo
@@ -186,14 +183,7 @@ pub(crate) async fn update_gear(
     .await;
 
     let detail_url = format!("/gear/{}", gear.id);
-
-    if is_datastar_request(&headers) {
-        render_redirect_script(&detail_url).map_err(ApiError::from)
-    } else if matches!(source, PayloadSource::Form) {
-        Ok(Redirect::to(&detail_url).into_response())
-    } else {
-        Ok(Json(gear).into_response())
-    }
+    update_response(&headers, source, &detail_url, Json(gear).into_response())
 }
 
 define_delete_handler!(

src/application/routes/api/coffee/roasters.rs

@@ -10,8 +10,10 @@ use crate::application::routes::api::images::save_deferred_image;
 use crate::application::routes::api::macros::{
     define_delete_handler, define_get_handler, define_list_fragment_renderer,
 };
+use crate::application::routes::support::impl_has_changes;
 use crate::application::routes::support::{
     FlexiblePayload, ListQuery, PayloadSource, is_datastar_request, render_redirect_script,
+    update_response, validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::ids::RoasterId;
@@ -168,6 +170,8 @@ impl UpdateRoasterSubmission {
     }
 }
 
+impl_has_changes!(UpdateRoaster, name, country, city, homepage, created_at);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_roaster(
     State(state): State<AppState>,
@@ -180,16 +184,7 @@ pub(crate) async fn update_roaster(
     let (update, image_data_url) = submission.into_parts();
     let update = update.normalize();
 
-    let has_changes = update.name.is_some()
-        || update.country.is_some()
-        || update.city.is_some()
-        || update.homepage.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     let roaster = state
         .roaster_repo
@@ -208,14 +203,7 @@ pub(crate) async fn update_roaster(
     .await;
 
     let detail_url = format!("/roasters/{}", roaster.slug);
-
-    if is_datastar_request(&headers) {
-        render_redirect_script(&detail_url).map_err(ApiError::from)
-    } else if matches!(source, PayloadSource::Form) {
-        Ok(Redirect::to(&detail_url).into_response())
-    } else {
-        Ok(Json(roaster).into_response())
-    }
+    update_response(&headers, source, &detail_url, Json(roaster).into_response())
 }
 
 define_delete_handler!(

src/application/routes/api/coffee/roasts.rs

@@ -12,7 +12,8 @@ use crate::application::routes::api::macros::{
     define_delete_handler, define_enriched_get_handler, define_list_fragment_renderer,
 };
 use crate::application::routes::support::{
-    FlexiblePayload, ListQuery, PayloadSource, is_datastar_request, render_redirect_script,
+    FlexiblePayload, ListQuery, PayloadSource, impl_has_changes, is_datastar_request,
+    render_redirect_script, validate_update,
 };
 use crate::application::state::AppState;
 use crate::domain::ids::{RoastId, RoasterId};
@@ -214,6 +215,18 @@ impl UpdateRoastSubmission {
     }
 }
 
+impl_has_changes!(
+    UpdateRoast,
+    roaster_id,
+    name,
+    origin,
+    region,
+    producer,
+    tasting_notes,
+    process,
+    created_at
+);
+
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn update_roast(
     State(state): State<AppState>,
@@ -225,19 +238,7 @@ pub(crate) async fn update_roast(
     let (submission, source) = payload.into_parts();
     let (update, image_data_url) = submission.into_parts();
 
-    let has_changes = update.roaster_id.is_some()
-        || update.name.is_some()
-        || update.origin.is_some()
-        || update.region.is_some()
-        || update.producer.is_some()
-        || update.tasting_notes.is_some()
-        || update.process.is_some()
-        || update.created_at.is_some()
-        || image_data_url.is_some();
-
-    if !has_changes {
-        return Err(AppError::validation("no changes provided").into());
-    }
+    validate_update(&update, image_data_url.as_ref())?;
 
     state
         .roast_repo

src/application/routes/support.rs

@@ -1,7 +1,7 @@
 use askama::Template;
 use axum::extract::{Form, FromRequest, Json as JsonPayload, Request};
 use axum::http::{HeaderMap, HeaderValue, header::CONTENT_TYPE};
-use axum::response::{Html, IntoResponse, Response};
+use axum::response::{Html, IntoResponse, Redirect, Response};
 use serde::Deserialize;
 use tracing::warn;
 
@@ -32,6 +32,50 @@ impl<T> FlexiblePayload<T> {
     }
 }
 
+/// Trait for update structs that can report whether any field was set.
+pub(crate) trait HasChanges {
+    fn has_changes(&self) -> bool;
+}
+
+/// Implement `HasChanges` for an update struct by checking `is_some()` on each field.
+macro_rules! impl_has_changes {
+    ($type:ty, $($field:ident),+) => {
+        impl $crate::application::routes::support::HasChanges for $type {
+            fn has_changes(&self) -> bool {
+                $(self.$field.is_some())||+
+            }
+        }
+    };
+}
+pub(crate) use impl_has_changes;
+
+/// Return `400 Bad Request` if neither the update struct nor the image has any changes.
+pub(crate) fn validate_update<T: HasChanges>(
+    update: &T,
+    image: Option<&String>,
+) -> Result<(), ApiError> {
+    if !update.has_changes() && image.is_none() {
+        return Err(AppError::validation("no changes provided").into());
+    }
+    Ok(())
+}
+
+/// Three-way response for update handlers: Datastar redirect, form redirect, or JSON.
+pub(crate) fn update_response(
+    headers: &HeaderMap,
+    source: PayloadSource,
+    detail_url: &str,
+    json_body: Response,
+) -> Result<Response, ApiError> {
+    if is_datastar_request(headers) {
+        render_redirect_script(detail_url).map_err(ApiError::from)
+    } else if matches!(source, PayloadSource::Form) {
+        Ok(Redirect::to(detail_url).into_response())
+    } else {
+        Ok(json_body)
+    }
+}
+
 #[derive(Debug, Default, Deserialize)]
 pub(crate) struct ListQuery {
     page: Option<u32>,

templates/pages/edit_bag.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Bag{% endblock %}
 
 {% block content %}
@@ -75,35 +76,7 @@
           />
         </label>
       </div>
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_brew.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Brew{% endblock %}
 
 {% block content %}
@@ -361,35 +362,7 @@
       </div>
 
       {{ img::deferred_upload_with_preview("edit-brew-image", "Brew Image", "brew", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_cafe.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Cafe{% endblock %}
 
 {% block content %}
@@ -118,35 +119,7 @@
         </label>
       </div>
       {{ img::deferred_upload_with_preview("edit-cafe-image", "Cafe Image", "cafe", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_cup.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Cup{% endblock %}
 
 {% block content %}
@@ -72,35 +73,7 @@
         </div>
       </div>
       {{ img::deferred_upload_with_preview("edit-cup-image", "Cup Image", "cup", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_gear.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Gear{% endblock %}
 
 {% block content %}
@@ -64,35 +65,7 @@
         </label>
       </div>
       {{ img::deferred_upload_with_preview("edit-gear-image", "Gear Image", "gear", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_roast.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Roast{% endblock %}
 
 {% block content %}
@@ -140,35 +141,7 @@
         </label>
       </div>
       {{ img::deferred_upload_with_preview("edit-roast-image", "Roast Image", "roast", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/pages/edit_roaster.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% import "partials/icons.html" as icons %}
 {% import "partials/image_section.html" as img %}
+{% import "partials/detail_cards.html" as detail_cards %}
 {% block title %}Brewlog · Edit Roaster{% endblock %}
 
 {% block content %}
@@ -82,35 +83,7 @@
         </label>
       </div>
       {{ img::deferred_upload_with_preview("edit-roaster-image", "Roaster Image", "roaster", id, image_url) }}
-      <p
-        data-show="$_submitError"
-        data-text="$_submitError"
-        style="display:none"
-        class="text-sm text-error"
-        role="alert"
-      ></p>
-      <div
-        data-show="$_submitting"
-        style="display:none"
-        class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
-      >
-        {{ icons::spinner("h-5 w-5") }} Saving&hellip;
-      </div>
-      <div class="flex flex-col gap-2" data-show="!$_submitting">
-        <button
-          type="submit"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
-        >
-          {{ icons::check("h-4 w-4") }} Save Changes
-        </button>
-        <button
-          type="button"
-          onclick="history.back()"
-          class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
-        >
-          {{ icons::x_mark("h-4 w-4") }} Cancel
-        </button>
-      </div>
+      {{ detail_cards::edit_form_actions() }}
     </form>
   </section>
 {% endblock %}

templates/partials/detail_cards.html

@@ -146,6 +146,38 @@
   </div>
 {% endmacro %}
 
+{% macro edit_form_actions() %}
+  <p
+    data-show="$_submitError"
+    data-text="$_submitError"
+    style="display:none"
+    class="text-sm text-error"
+    role="alert"
+  ></p>
+  <div
+    data-show="$_submitting"
+    style="display:none"
+    class="flex items-center justify-center gap-3 py-2 text-sm text-accent"
+  >
+    {{ icons::spinner("h-5 w-5") }} Saving&hellip;
+  </div>
+  <div class="flex flex-col gap-2" data-show="!$_submitting">
+    <button
+      type="submit"
+      class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-accent px-4 py-2 text-sm font-semibold text-accent-text transition hover:bg-accent-hover disabled:opacity-50"
+    >
+      {{ icons::check("h-4 w-4") }} Save Changes
+    </button>
+    <button
+      type="button"
+      onclick="history.back()"
+      class="inline-flex w-full items-center justify-center gap-2 rounded-md border px-4 py-2 text-sm font-medium text-text-secondary transition hover:bg-surface-alt"
+    >
+      {{ icons::x_mark("h-4 w-4") }} Cancel
+    </button>
+  </div>
+{% endmacro %}
+
 {% macro edit_delete_buttons(edit_url, entity_label, api_path, id) %}
   <div class="rounded-lg border bg-surface p-5 flex items-center gap-2">
     <a

tests/e2e/edit_tests.rs

@@ -662,7 +662,7 @@ async fn edit_form_cancel_navigates_back() {
     // Click Cancel
     let cancel_btn = session
         .driver
-        .find(By::XPath("//button[contains(text(), 'Cancel')]"))
+        .find(By::Css("button[onclick='history.back()']"))
         .await
         .unwrap();
     cancel_btn.click().await.unwrap();