Validate user website_url

This commit adds validate to the user
website_url, to ensure that the entered
website url is valid.

Changelog: added

app/models/user.rb

@@ -253,6 +253,8 @@ class User < ApplicationRecord
   validates :color_scheme_id, allow_nil: true, inclusion: { in: Gitlab::ColorSchemes.valid_ids,
     message: _("%{placeholder} is not a valid color scheme") % { placeholder: '%{value}' } }
 
+  validates :website_url, allow_blank: true, url: true, if: :website_url_changed?
+
   before_validation :sanitize_attrs
   before_validation :reset_secondary_emails, if: :email_changed?
   before_save :default_private_profile_to_false

app/views/profiles/show.html.haml

@@ -103,7 +103,7 @@
       = f.text_field :skype, class: 'input-md gl-form-input', placeholder: s_("Profiles|username")
       = f.text_field :linkedin, class: 'input-md gl-form-input', help: s_("Profiles|Your LinkedIn profile name from linkedin.com/in/profilename")
       = f.text_field :twitter, class: 'input-md gl-form-input', placeholder: s_("Profiles|@username")
-      = f.text_field :website_url, class: 'input-lg gl-form-input', placeholder: s_("Profiles|website.com")
+      = f.text_field :website_url, class: 'input-lg gl-form-input', placeholder: s_("Profiles|https://website.com")
       - if @user.read_only_attribute?(:location)
         = f.text_field :location, class: 'gl-form-input', readonly: true, help: s_("Profiles|Your location was automatically set based on your %{provider_label} account") % { provider_label: attribute_provider_label(:location) }
       - else

locale/gitlab.pot

@@ -25865,10 +25865,10 @@ msgstr ""
 msgid "Profiles|e.g. My MacBook key"
 msgstr ""
 
-msgid "Profiles|username"
+msgid "Profiles|https://website.com"
 msgstr ""
 
-msgid "Profiles|website.com"
+msgid "Profiles|username"
 msgstr ""
 
 msgid "Profiles|your account"

spec/features/profiles/user_edit_profile_spec.rb

@@ -32,7 +32,7 @@ RSpec.describe 'User edit profile' do
     fill_in 'user_skype', with: 'testskype'
     fill_in 'user_linkedin', with: 'testlinkedin'
     fill_in 'user_twitter', with: 'testtwitter'
-    fill_in 'user_website_url', with: 'testurl'
+    fill_in 'user_website_url', with: 'http://testurl.com'
     fill_in 'user_location', with: 'Ukraine'
     fill_in 'user_bio', with: 'I <3 GitLab :tada:'
     fill_in 'user_job_title', with: 'Frontend Engineer'
@@ -43,7 +43,7 @@ RSpec.describe 'User edit profile' do
       skype: 'testskype',
       linkedin: 'testlinkedin',
       twitter: 'testtwitter',
-      website_url: 'testurl',
+      website_url: 'http://testurl.com',
       bio: 'I <3 GitLab :tada:',
       bio_html: '<p data-sourcepos="1:1-1:18" dir="auto">I &lt;3 GitLab <gl-emoji title="party popper" data-name="tada" data-unicode-version="6.0">🎉</gl-emoji></p>',
       job_title: 'Frontend Engineer',
@@ -65,6 +65,17 @@ RSpec.describe 'User edit profile' do
     end
   end
 
+  it 'shows an error if the website url is not valid' do
+    fill_in 'user_website_url', with: 'admin@gitlab.com'
+    submit_settings
+
+    expect(user.reload).to have_attributes(
+      website_url: ''
+    )
+
+    expect(page).to have_content('Website url is not a valid URL')
+  end
+
   describe 'when I change my email' do
     before do
       user.send_reset_password_instructions