Fix 500 error when error occurred in migration page (#33256)

The template should be `repo/migrate/{service type}`
But input element `service` is not in the form.

Related: #33081

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/repo/migrate/codebase.tmpl

@@ -3,13 +3,15 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{template "base/disable_form_autofill"}}
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/codecommit.tmpl

@@ -3,13 +3,15 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{template "base/disable_form_autofill"}}
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/git.tmpl

@@ -3,13 +3,15 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{template "base/disable_form_autofill"}}
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/gitbucket.tmpl

@@ -3,13 +3,15 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{template "base/disable_form_autofill"}}
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/gitea.tmpl

@@ -3,12 +3,14 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/github.tmpl

@@ -3,12 +3,14 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/gitlab.tmpl

@@ -3,12 +3,14 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/gogs.tmpl

@@ -3,12 +3,14 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

templates/repo/migrate/onedev.tmpl

@@ -3,13 +3,15 @@
 	<div class="ui container medium-width">
 		<h3 class="ui top attached header">
 			{{ctx.Locale.Tr "repo.migrate.migrate" .service.Title}}
-			<input id="service_type" type="hidden" name="service" value="{{.service}}">
 		</h3>
 		<div class="ui attached segment">
 			{{template "base/alert" .}}
 			<form class="ui form left-right-form" action="{{.Link}}" method="post">
 				{{template "base/disable_form_autofill"}}
 				{{.CsrfTokenHtml}}
+
+				<input id="service_type" type="hidden" name="service" value="{{.service}}">
+
 				<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
 					<label for="clone_addr">{{ctx.Locale.Tr "repo.migrate.clone_address"}}</label>
 					<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>

tests/integration/migrate_test.go

@@ -79,8 +79,12 @@ func TestMigrateGiteaForm(t *testing.T) {
 		resp := session.MakeRequest(t, req, http.StatusOK)
 		// Step 2: load the form
 		htmlDoc := NewHTMLParser(t, resp.Body)
-		link, exists := htmlDoc.doc.Find(`form.ui.form[action^="/repo/migrate"]`).Attr("action")
+		form := htmlDoc.doc.Find(`form.ui.form[action^="/repo/migrate"]`)
+		link, exists := form.Attr("action")
 		assert.True(t, exists, "The template has changed")
+		serviceInput, exists := form.Find(`input[name="service"]`).Attr("value")
+		assert.True(t, exists)
+		assert.EqualValues(t, fmt.Sprintf("%d", structs.GiteaService), serviceInput)
 		// Step 4: submit the migration to only migrate issues
 		migratedRepoName := "otherrepo"
 		req = NewRequestWithValues(t, "POST", link, map[string]string{