Keep project settings sections expanded after submitting form

app/controllers/projects/avatars_controller.rb

@@ -21,6 +21,6 @@ class Projects::AvatarsController < Projects::ApplicationController
     @project.save
-    redirect_to edit_project_path(@project), status: :found
+    redirect_to edit_project_path(@project, anchor: 'js-general-project-settings'), status: :found
   end
 end

app/controllers/projects_controller.rb

@@ -61,7 +61,7 @@ class ProjectsController < Projects::ApplicationController
         flash[:notice] = _("Project '%{project_name}' was successfully updated.") % { project_name: @project.name }
         format.html do
-          redirect_to(edit_project_path(@project))
+          redirect_to(edit_project_path(@project, anchor: 'js-general-project-settings'))
         end
       else
         flash.now[:alert] = result[:message]
@@ -174,7 +174,7 @@ class ProjectsController < Projects::ApplicationController
     )
   rescue ::Projects::HousekeepingService::LeaseTaken => ex
     redirect_to(
-      edit_project_path(@project),
+      edit_project_path(@project, anchor: 'js-project-advanced-settings'),
       alert: ex.to_s
     )
   end
@@ -183,7 +183,7 @@ class ProjectsController < Projects::ApplicationController
     @project.add_export_job(current_user: current_user)
     redirect_to(
-      edit_project_path(@project),
+      edit_project_path(@project, anchor: 'js-export-project'),
       notice: _("Project export started. A download link will be sent by email.")
     )
   end
@@ -195,7 +195,7 @@ class ProjectsController < Projects::ApplicationController
       send_file export_project_path, disposition: 'attachment'
     else
       redirect_to(
-        edit_project_path(@project),
+        edit_project_path(@project, anchor: 'js-export-project'),
         alert: _("Project export link has expired. Please generate a new export from your project settings.")
       )
     end
@@ -208,7 +208,7 @@ class ProjectsController < Projects::ApplicationController
       flash[:alert] = _("Project export could not be deleted.")
     end
-    redirect_to(edit_project_path(@project))
+    redirect_to(edit_project_path(@project, anchor: 'js-export-project'))
   end
   def generate_new_export
@@ -216,7 +216,7 @@ class ProjectsController < Projects::ApplicationController
       export
     else
       redirect_to(
-        edit_project_path(@project),
+        edit_project_path(@project, anchor: 'js-export-project'),
         alert: _("Project export could not be deleted.")
       )
     end

app/views/projects/edit.html.haml

@@ -15,6 +15,7 @@
     .settings-content
       .project-edit-errors
       = form_for [@project.namespace.becomes(Namespace), @project], remote: true, html: { multipart: true, class: "edit-project" }, authenticity_token: true do |f|
+        %input{ name: 'update_section', type: 'hidden', value: 'js-general-project-settings' }
         %fieldset
           .row
             .form-group.col-md-9
@@ -75,6 +76,7 @@
         Enable or disable certain project features and choose access levels.
     .settings-content
       = form_for [@project.namespace.becomes(Namespace), @project], remote: true, html: { multipart: true, class: "sharing-permissions-form" }, authenticity_token: true do |f|
+        %input{ name: 'update_section', type: 'hidden', value: 'js-shared-permissions' }
         -# haml-lint:disable InlineJavaScript
         %script.js-project-permissions-form-data{ type: "application/json" }= project_permissions_panel_data(@project)
         .js-project-permissions-form
@@ -94,6 +96,7 @@
       = render_if_exists 'shared/promotions/promote_mr_features'
       = form_for [@project.namespace.becomes(Namespace), @project], remote: true, html: { multipart: true, class: "merge-request-settings-form" }, authenticity_token: true do |f|
+        %input{ name: 'update_section', type: 'hidden', value: 'js-merge-request-settings' }
         = render 'projects/merge_request_settings', form: f
         = f.submit 'Save changes', class: "btn btn-save qa-save-merge-request-changes"

app/views/projects/update.js.haml

 - if @project.valid?
   :plain
-    location.href = "#{edit_project_path(@project)}";
+    location.href = "#{edit_project_path(@project, anchor: params[:update_section])}";
+    location.reload();
 - else
   :plain
     $(".project-edit-errors").html("#{escape_javascript(render('errors'))}");