Redirect logged in users to inviters page when following an invitation link

closes #7061

Changelog.md

@@ -17,6 +17,7 @@
 * Deleted comments will be removed when loading more comments [#7045](https://github.com/diaspora/diaspora/pull/7045)
 * The "subscribe" indicator on a post now gets toggled when you like or rehsare a post [#7040](https://github.com/diaspora/diaspora/pull/7040)
 * Add OpenGraph video support [#7043](https://github.com/diaspora/diaspora/pull/7043)
+* You'll now get redirected to the invites page if you follow an invitation but you're already logged in [#7061](https://github.com/diaspora/diaspora/pull/7061)
 
 # 0.6.0.0
 

app/controllers/invitation_codes_controller.rb

@@ -5,9 +5,14 @@ class InvitationCodesController < ApplicationController
     redirect_to root_url, :notice => I18n.t('invitation_codes.not_valid')
   end
 
-  def show 
-    sign_out(current_user) if user_signed_in?
-    redirect_to new_user_registration_path(:invite => {:token => params[:id]})
+  def show
+    if user_signed_in?
+      invite = InvitationCode.find_by_token!(params[:id])
+      flash[:notice] = I18n.t("invitation_codes.already_logged_in", inviter: invite.user.name)
+      redirect_to person_path(invite.user.person)
+    else
+      redirect_to new_user_registration_path(invite: {token: params[:id]})
+    end
   end
 
   private

config/locales/diaspora/en.yml

@@ -553,6 +553,7 @@ en:
 
   invitation_codes:
     not_valid: "That invite code is no longer valid"
+    already_logged_in: "You have been invited by %{inviter} to join this pod but you are already logged in."
 
   invitations:
     create:

spec/controllers/invitation_codes_controller_spec.rb

@@ -0,0 +1,27 @@
+require "spec_helper"
+
+describe InvitationCodesController, type: :controller do
+  describe "#show" do
+    it "redirects to the root page if the invitation code is invalid" do
+      get :show, id: "InvalidInvitationCode"
+      expect(response).to redirect_to root_path
+      expect(flash[:notice]).to eq(I18n.t("invitation_codes.not_valid"))
+    end
+
+    context "valid invitation code" do
+      let(:invitation_token) { alice.invitation_code.token }
+
+      it "redirects logged out users to the sign in page" do
+        post :show, id: invitation_token
+        expect(response).to redirect_to new_user_registration_path(invite: {token: invitation_token})
+      end
+
+      it "redirects logged in users the the inviters page" do
+        sign_in bob
+        post :show, id: invitation_token
+        expect(response).to redirect_to person_path(alice.person)
+        expect(flash[:notice]).to eq(I18n.t("invitation_codes.already_logged_in", inviter: alice.name))
+      end
+    end
+  end
+end