FIX: Improve error messages for invites (#12714)

The error messages used to include an unnecessary 'Validation failed:
Email' prefix which was removed.

app/controllers/invites_controller.rb

@@ -104,8 +104,10 @@ class InvitesController < ApplicationController
       else
         render json: failed_json, status: 422
       end
-    rescue Invite::UserExists, ActiveRecord::RecordInvalid => e
+    rescue Invite::UserExists => e
       render_json_error(e.message)
+    rescue ActiveRecord::RecordInvalid => e
+      render_json_error(e.record.errors.full_messages.first)
     end
   end
 
@@ -175,7 +177,7 @@ class InvitesController < ApplicationController
       begin
         invite.update!(params.permit(:email, :custom_message, :max_redemptions_allowed, :expires_at))
       rescue ActiveRecord::RecordInvalid => e
-        return render_json_error(e.message)
+        return render_json_error(e.record.errors.full_messages.first)
       end
     end
 

app/models/invite.rb

@@ -62,7 +62,7 @@ class Invite < ActiveRecord::Base
 
     if user && user.id != self.invited_users&.first&.user_id
       @email_already_exists = true
-      errors.add(:email, I18n.t(
+      errors.add(:base, I18n.t(
         "invite.user_exists",
         email: email,
         username: user.username,

config/locales/server.en.yml

@@ -241,6 +241,7 @@ en:
       <p>The invitation to <a href="%{base_url}">%{site_name}</a> can no longer be redeemed. Please ask the person who invited you to send you a new invitation.</p>
     error_message: "There was an error accepting invite. Please contact the site's administrator."
     user_exists: "There's no need to invite <b>%{email}</b>, they <a href='%{base_path}/u/%{username}/summary'>already have an account!</a>"
+    invalid_email: "%{email} isn't a valid email address."
     confirm_email: "<p>You’re almost done! We sent an activation mail to your email address. Please follow the instructions in the mail to activate your account.</p><p>If it doesn’t arrive, check your spam folder.</p>"
     cant_invite_to_group: "You are not allowed to invite users to specified group(s). Make sure you are owner of the group(s) you are trying to invite to."
     disabled_errors:

lib/validators/email_validator.rb

@@ -4,14 +4,20 @@ class EmailValidator < ActiveModel::EachValidator
 
   def validate_each(record, attribute, value)
     unless value =~ EmailValidator.email_regex
-      record.errors.add(attribute, I18n.t(:'user.email.invalid'))
+      if Invite === record && attribute == :email
+        record.errors.add(:base, I18n.t(:'invite.invalid_email', email: value))
+      else
+        record.errors.add(attribute, I18n.t(:'user.email.invalid'))
+      end
+      invalid = true
     end
 
     unless EmailValidator.allowed?(value)
       record.errors.add(attribute, I18n.t(:'user.email.not_allowed'))
+      invalid = true
     end
 
-    if record.errors[attribute].blank? && value && ScreenedEmail.should_block?(value)
+    if !invalid && ScreenedEmail.should_block?(value)
       record.errors.add(attribute, I18n.t(:'user.email.blocked'))
     end
   end

spec/models/invite_spec.rb

@@ -17,7 +17,7 @@ describe Invite do
     it 'does not allow invites with invalid emails' do
       invite = Fabricate.build(:invite, email: 'John Doe <john.doe@example.com>')
       expect(invite.valid?).to eq(false)
-      expect(invite.errors.details[:email].first[:error]).to eq(I18n.t('user.email.invalid'))
+      expect(invite.errors.full_messages).to include(I18n.t('invite.invalid_email', email: invite.email))
     end
 
     it 'does not allow an invite with the same email as an existing user' do
@@ -36,7 +36,7 @@ describe Invite do
     it 'does not allow an invalid email address' do
       invite = Fabricate.build(:invite, email: 'asjdso')
       expect(invite.valid?).to eq(false)
-      expect(invite.errors.details[:email].first[:error]).to eq(I18n.t('user.email.invalid'))
+      expect(invite.errors.full_messages).to include(I18n.t('invite.invalid_email', email: invite.email))
     end
   end