Use the new/choose link for New Issue on project page (#19172)

Extend issues/new/choose to pass the project id and change New Issue
link on project page to use new/choose

Fix #19170

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/web/repo/issue.go

@@ -843,12 +843,19 @@ func NewIssue(ctx *context.Context) {
 func NewIssueChooseTemplate(ctx *context.Context) {
 	ctx.Data["Title"] = ctx.Tr("repo.issues.new")
 	ctx.Data["PageIsIssueList"] = true
-	ctx.Data["milestone"] = ctx.FormInt64("milestone")
 
 	issueTemplates := ctx.IssueTemplatesFromDefaultBranch()
-	ctx.Data["NewIssueChooseTemplate"] = len(issueTemplates) > 0
 	ctx.Data["IssueTemplates"] = issueTemplates
 
+	if len(issueTemplates) == 0 {
+		// The "issues/new" and "issues/new/choose" share the same query parameters "project" and "milestone", if no template here, just redirect to the "issues/new" page with these parameters.
+		ctx.Redirect(fmt.Sprintf("%s/issues/new?%s", ctx.Repo.Repository.HTMLURL(), ctx.Req.URL.RawQuery), http.StatusSeeOther)
+		return
+	}
+
+	ctx.Data["milestone"] = ctx.FormInt64("milestone")
+	ctx.Data["project"] = ctx.FormInt64("project")
+
 	ctx.HTML(http.StatusOK, tplIssueChoose)
 }
 

templates/repo/issue/choose.tmpl

@@ -14,7 +14,7 @@
 						<br/>{{.About | RenderEmojiPlain}}
 					</div>
 					<div class="column right aligned">
-						<a href="{{$.RepoLink}}/issues/new?template={{.FileName}}{{if $.milestone}}&milestone={{$.milestone}}{{end}}" class="ui green button">{{$.i18n.Tr "repo.issues.choose.get_started"}}</a>
+						<a href="{{$.RepoLink}}/issues/new?template={{.FileName}}{{if $.milestone}}&milestone={{$.milestone}}{{end}}{{if $.project}}&project={{$.project}}{{end}}" class="ui green button">{{$.i18n.Tr "repo.issues.choose.get_started"}}</a>
 					</div>
 				</div>
 			</div>
@@ -26,7 +26,7 @@
 					<br/>{{.i18n.Tr "repo.issues.choose.blank_about"}}
 				</div>
 				<div class="column right aligned">
-					<a href="{{.RepoLink}}/issues/new{{if .milestone}}?milestone={{.milestone}}{{end}}" class="ui green button">{{$.i18n.Tr "repo.issues.choose.get_started"}}</a>
+					<a href="{{.RepoLink}}/issues/new?{{if .milestone}}&milestone={{.milestone}}{{end}}{{if $.project}}&project={{$.project}}{{end}}" class="ui green button">{{$.i18n.Tr "repo.issues.choose.get_started"}}</a>
 				</div>
 			</div>
 		</div>

templates/repo/projects/view.tmpl

@@ -8,7 +8,7 @@
 			</div>
 			<div class="column right aligned">
 				{{if and .CanWriteProjects (not .Repository.IsArchived)}}
-					<a class="ui green button show-modal item" href="{{$.RepoLink}}/issues/new?project={{$.Project.ID}}">{{.i18n.Tr "repo.issues.new"}}</a>
+					<a class="ui green button show-modal item" href="{{$.RepoLink}}/issues/new/choose?project={{$.Project.ID}}">{{.i18n.Tr "repo.issues.new"}}</a>
 					<a class="ui green button show-modal item" data-modal="#new-board-item">{{.i18n.Tr "new_project_board"}}</a>
 				{{end}}
 				<div class="ui small modal new-board-modal" id="new-board-item">