From 646b2545d57429513a179be1a351a3bb19e4712e Mon Sep 17 00:00:00 2001
From: Daniel Kesselberg <mail@danielkesselberg.de>
Date: Sun, 5 Oct 2025 19:58:59 +0200
Subject: [PATCH] fix(setup): set dbtype value also for single-db

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>
---
 core/src/views/Setup.cy.ts | 22 ++++++++++++++--------
 core/src/views/Setup.vue   |  5 +++--
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/core/src/views/Setup.cy.ts b/core/src/views/Setup.cy.ts
index f252801c4d8..43da1f19a38 100644
--- a/core/src/views/Setup.cy.ts
+++ b/core/src/views/Setup.cy.ts
@@ -84,9 +84,13 @@ describe('Default setup page', () => {
 		cy.mockInitialState('core', 'config', config)
 		cy.mount(SetupView)
 
-		// No DB radio selectors if only sqlite
 		cy.get('[data-cy-setup-form-field^="dbtype"]')
-			.should('not.exist')
+			.should('exist')
+			.should('not.be.visible')
+			.find('input')
+			.should('be.checked')
+
+		cy.get('[data-cy-setup-form-field="dbtype-sqlite"]').should('exist')
 
 		// Two warnings: sqlite and single db support
 		cy.get('[data-cy-setup-form-db-note="sqlite"]')
@@ -94,10 +98,10 @@ describe('Default setup page', () => {
 		cy.get('[data-cy-setup-form-db-note="single-db"]')
 			.should('be.visible')
 
-		// Admin login, password and data directory
+		// Admin login, password, data directory and db type
 		cy.get('[data-cy-setup-form-field]')
 			.should('be.visible')
-			.should('have.length', 3)
+			.should('have.length', 4)
 	})
 
 	it('Renders single DB mysql', () => {
@@ -110,9 +114,11 @@ describe('Default setup page', () => {
 		cy.mockInitialState('core', 'config', config)
 		cy.mount(SetupView)
 
-		// No DB radio selectors if only mysql
 		cy.get('[data-cy-setup-form-field^="dbtype"]')
-			.should('not.exist')
+			.should('exist')
+			.should('not.be.visible')
+			.find('input')
+			.should('be.checked')
 
 		// Single db support warning
 		cy.get('[data-cy-setup-form-db-note="single-db"]')
@@ -124,11 +130,11 @@ describe('Default setup page', () => {
 		cy.get('[data-cy-setup-form-db-note="sqlite"]')
 			.should('not.exist')
 
-		// Admin login, password, data directory, db user,
+		// Admin login, password, data directory, db type, db user,
 		// db password, db name and db host
 		cy.get('[data-cy-setup-form-field]')
 			.should('be.visible')
-			.should('have.length', 7)
+			.should('have.length', 8)
 	})
 
 	it('Changes fields from sqlite to mysql then oci', () => {
diff --git a/core/src/views/Setup.vue b/core/src/views/Setup.vue
index 50ec0da9035..b30e1049e74 100644
--- a/core/src/views/Setup.vue
+++ b/core/src/views/Setup.vue
@@ -82,7 +82,8 @@
 
 				<!-- Database type select -->
 				<fieldset class="setup-form__database-type">
-					<p v-if="!firstAndOnlyDatabase" :class="`setup-form__database-type-select--${DBTypeGroupDirection}`" class="setup-form__database-type-select">
+					<!-- Using v-show instead of v-if ensures that the input dbtype remains set even when only one database engine is available -->
+					<p v-show="!firstAndOnlyDatabase" :class="`setup-form__database-type-select--${DBTypeGroupDirection}`" class="setup-form__database-type-select">
 						<NcCheckboxRadioSwitch v-for="(name, db) in config.databases"
 							:key="db"
 							v-model="config.dbtype"
@@ -96,7 +97,7 @@
 						</NcCheckboxRadioSwitch>
 					</p>
 
-					<NcNoteCard v-else data-cy-setup-form-db-note="single-db" type="warning">
+					<NcNoteCard v-if="firstAndOnlyDatabase" data-cy-setup-form-db-note="single-db" type="warning">
 						{{ t('core', 'Only {firstAndOnlyDatabase} is available.', { firstAndOnlyDatabase }) }}<br>
 						{{ t('core', 'Install and activate additional PHP modules to choose other database types.') }}<br>
 						<a :href="links.adminSourceInstall" target="_blank" rel="noreferrer noopener">