Fix unfollowing remote actors

resolves #3462

app/components/follow_button_component.rb

@@ -18,7 +18,7 @@ def before_render
       @method = :post
     else
       @path = @target.is_a?(Federails::Actor) ?
-        follow_remote_actor_path(@target) :
+        unfollow_remote_actor_path(@target) :
         url_for(@target) + "/follows"
       @method = @following ? :delete : :post
     end

app/controllers/follows_controller.rb

@@ -1,5 +1,5 @@
 class FollowsController < ApplicationController
-  before_action :get_target, except: [:index, :new, :remote_follow, :perform_remote_follow, :follow_remote_actor]
+  before_action :get_target, except: [:index, :new, :remote_follow, :perform_remote_follow, :follow_remote_actor, :unfollow_remote_actor]
   skip_after_action :verify_policy_scoped, only: :index
   skip_after_action :verify_authorized, only: [:new, :remote_follow, :perform_remote_follow]
 
@@ -49,6 +49,13 @@ def follow_remote_actor
     redirect_to root_url, notice: t(".followed", actor: @actor.at_address)
   end
 
+  def unfollow_remote_actor
+    authorize Federails::Following, :destroy?
+    @actor = Federails::Actor.find_param(params[:id])
+    current_user.unfollow(@actor)
+    redirect_to root_url, notice: t(".unfollowed", actor: @actor.at_address)
+  end
+
   def create
     authorize Federails::Following
     current_user.follow @target

app/models/concerns/follower.rb

@@ -16,7 +16,7 @@ def follow(target)
   end
 
   def unfollow(target)
-    f = federails_actor.follows?(target.federails_actor)
+    f = federails_actor.follows?(target.is_a?(Federails::Actor) ? target : target.federails_actor)
     f&.destroy unless f == false
   end
 

config/locales/en.yml

@@ -311,6 +311,8 @@ en:
       placeholder: Your Fediverse username, e.g. manyfold@3dp.chat
       submit: Take me home
       title: Follow %{name}
+    unfollow_remote_actor:
+      unfollowed: Unfollowed %{actor}
   general:
     delete: Delete
     download: Download

config/routes.rb

@@ -45,6 +45,7 @@
     post "/remote_follow" => "follows#remote_follow", :as => :remote_follow
     post "/perform_remote_follow" => "follows#perform_remote_follow", :as => :perform_remote_follow
     post "/follow_remote_actor/:id" => "follows#follow_remote_actor", :as => :follow_remote_actor
+    delete "/follow_remote_actor/:id" => "follows#unfollow_remote_actor", :as => :unfollow_remote_actor
   end
 
   if SiteSettings.federation_enabled? || Rails.env.test?