PagesDomain: Add edit/update functionality

app/controllers/projects/pages_domains_controller.rb

@@ -3,7 +3,7 @@ class Projects::PagesDomainsController < Projects::ApplicationController
 
   before_action :require_pages_enabled!
   before_action :authorize_update_pages!, except: [:show]
-  before_action :domain, only: [:show, :destroy, :verify]
+  before_action :domain, except: [:new, :create]
 
   def show
   end
@@ -24,8 +24,11 @@ class Projects::PagesDomainsController < Projects::ApplicationController
     redirect_to project_pages_domain_path(@project, @domain)
   end
 
+  def edit
+  end
+
   def create
-    @domain = @project.pages_domains.create(pages_domain_params)
+    @domain = @project.pages_domains.create(create_params)
 
     if @domain.valid?
       redirect_to project_pages_domain_path(@project, @domain)
@@ -34,6 +37,16 @@ class Projects::PagesDomainsController < Projects::ApplicationController
     end
   end
 
+  def update
+    if @domain.update(update_params)
+      redirect_to project_pages_path(@project),
+        status: 302,
+        notice: 'Domain was updated'
+    else
+      render 'edit'
+    end
+  end
+
   def destroy
     @domain.destroy
 
@@ -49,12 +62,12 @@ class Projects::PagesDomainsController < Projects::ApplicationController
 
   private
 
-  def pages_domain_params
-    params.require(:pages_domain).permit(
-      :certificate,
-      :key,
-      :domain
-    )
+  def create_params
+    params.require(:pages_domain).permit(:key, :certificate, :domain)
+  end
+
+  def update_params
+    params.require(:pages_domain).permit(:key, :certificate)
   end
 
   def domain

app/views/projects/pages_domains/_form.html.haml

-= form_for [@project.namespace.becomes(Namespace), @project, @domain], html: { class: 'form-horizontal fieldset-form' } do |f|
-  - if @domain.errors.any?
+- if @domain.errors.any?
   #error_explanation
     .alert.alert-danger
       - @domain.errors.full_messages.each do |msg|
         %p= msg
 
-  .form-group
+.form-group
   = f.label :domain, class: 'control-label' do
     Domain
   .col-sm-10
-      = f.text_field :domain, required: true, autocomplete: 'off', class: 'form-control'
+    = f.text_field :domain, required: true, autocomplete: 'off', class: 'form-control', disabled: @domain.persisted?
 
-  - if Gitlab.config.pages.external_https
+- if Gitlab.config.pages.external_https
   .form-group
     = f.label :certificate, class: 'control-label' do
       Certificate (PEM)
@@ -25,10 +24,7 @@
     .col-sm-10
       = f.text_area :key, rows: 5, class: 'form-control'
       %span.help-inline Upload a private key for your certificate
-  - else
+- else
   .nothing-here-block
     Support for custom certificates is disabled.
     Ask your system's administrator to enable it.
-
-  .form-actions
-    = f.submit 'Create New Domain', class: "btn btn-save"

app/views/projects/pages_domains/edit.html.haml

+- page_title @domain.domain
+%h3.page_title
+  = @domain.domain
+%hr.clearfix
+%div
+  = form_for [@project.namespace.becomes(Namespace), @project, @domain], html: { class: 'form-horizontal fieldset-form' } do |f|
+    = render 'form', { f: f }
+    .form-actions
+      = f.submit 'Save Changes', class: "btn btn-save"

app/views/projects/pages_domains/new.html.haml

@@ -3,4 +3,7 @@
   New Pages Domain
 %hr.clearfix
 %div
-  = render 'form'
+  = form_for [@project.namespace.becomes(Namespace), @project, @domain], html: { class: 'form-horizontal fieldset-form' } do |f|
+    = render 'form', { f: f }
+    .form-actions
+      = f.submit 'Create New Domain', class: "btn btn-save"

app/views/projects/pages_domains/show.html.haml

@@ -8,6 +8,7 @@
 
 %h3.page-title
   Pages Domain
+  = link_to 'Edit', edit_project_pages_domain_path(@project, @domain), class: 'btn btn-success pull-right'
 
 .table-holder
   %table.table

changelogs/unreleased/feature-edit_pages_domain.yml

+---
+title: 'Pages custom domain: allow update of key/certificate'
+merge_request: 17376
+author: rfwatson
+type: changed

config/routes/project.rb

@@ -55,7 +55,7 @@ constraints(ProjectUrlConstrainer.new) do
       end
 
       resource :pages, only: [:show, :destroy] do
-        resources :domains, only: [:show, :new, :create, :destroy], controller: 'pages_domains', constraints: { id: %r{[^/]+} } do
+        resources :domains, except: :index, controller: 'pages_domains', constraints: { id: %r{[^/]+} } do
           member do
             post :verify
           end

spec/controllers/projects/pages_domains_controller_spec.rb

@@ -53,6 +53,66 @@ describe Projects::PagesDomainsController do
     end
   end
 
+  describe 'GET edit' do
+    it "displays the 'edit' page" do
+      get(:edit, request_params.merge(id: pages_domain.domain))
+
+      expect(response).to have_gitlab_http_status(200)
+      expect(response).to render_template('edit')
+    end
+  end
+
+  describe 'PATCH update' do
+    before do
+      controller.instance_variable_set(:@domain, pages_domain)
+    end
+
+    let(:pages_domain_params) do
+      attributes_for(:pages_domain, :with_certificate, :with_key).slice(:key, :certificate)
+    end
+
+    let(:params) do
+      request_params.merge(id: pages_domain.domain, pages_domain: pages_domain_params)
+    end
+
+    it 'updates the domain' do
+      expect(pages_domain)
+        .to receive(:update)
+        .with(pages_domain_params)
+        .and_return(true)
+
+      patch(:update, params)
+    end
+
+    it 'redirects to the project page' do
+      patch(:update, params)
+
+      expect(flash[:notice]).to eq 'Domain was updated'
+      expect(response).to redirect_to(project_pages_path(project))
+    end
+
+    context 'the domain is invalid' do
+      it 'renders the edit action' do
+        allow(pages_domain).to receive(:update).and_return(false)
+
+        patch(:update, params)
+
+        expect(response).to render_template('edit')
+      end
+    end
+
+    context 'the parameters include the domain' do
+      it 'renders 400 Bad Request' do
+        expect(pages_domain)
+          .to receive(:update)
+          .with(hash_not_including(:domain))
+          .and_return(true)
+
+        patch(:update, params.deep_merge(pages_domain: { domain: 'abc' }))
+      end
+    end
+  end
+
   describe 'POST verify' do
     let(:params) { request_params.merge(id: pages_domain.domain) }
 

spec/features/projects/pages_spec.rb

@@ -160,6 +160,37 @@ feature 'Pages' do
 
           expect(page).to have_content('my.test.domain.com')
         end
+
+        describe 'updating the certificate for an existing domain' do
+          let!(:domain) do
+            create(:pages_domain, :with_key, :with_certificate, project: project)
+          end
+
+          it 'allows the certificate to be updated' do
+            visit project_pages_path(project)
+
+            within('#content-body') { click_link 'Details' }
+            click_link 'Edit'
+            click_button 'Save Changes'
+
+            expect(page).to have_content('Domain was updated')
+          end
+
+          context 'when the certificate is invalid' do
+            it 'tells the user what the problem is' do
+              visit project_pages_path(project)
+
+              within('#content-body') { click_link 'Details' }
+              click_link 'Edit'
+              fill_in 'Certificate (PEM)', with: 'invalid data'
+              click_button 'Save Changes'
+
+              expect(page).to have_content('Certificate must be a valid PEM certificate')
+              expect(page).to have_content('Certificate misses intermediates')
+              expect(page).to have_content("Key doesn't match the certificate")
+            end
+          end
+        end
       end
     end