Fix set maintainer links

app/controllers/post_set_maintainers_controller.rb

@@ -52,6 +52,7 @@ class PostSetMaintainersController < ApplicationController
     check_approve_access(@maintainer)
 
     @maintainer.approve!
+    redirect_to :back, notice: "You are now a maintainer for the set."
   end
 
   def deny
@@ -59,6 +60,7 @@ class PostSetMaintainersController < ApplicationController
     raise User::PrivilegeError unless @maintainer.user_id == CurrentUser.id
 
     @maintainer.deny!
+    redirect_to :back, notice: "You have declined the set maintainer invite."
   end
 
   def block
@@ -66,6 +68,7 @@ class PostSetMaintainersController < ApplicationController
     check_block_access(@maintainer)
 
     @maintainer.block!
+    redirect_to :back, notice: "You will not receive further invites for this set."
   end
 
   private

app/models/post_set_maintainer.rb

@@ -12,11 +12,11 @@ class PostSetMaintainer < ApplicationRecord
   def notify_maintainer
     body = "\"#{post_set.creator.name}\":/users/#{post_set.creator_id} invited you to be a maintainer of the \"#{post_set.name}\":/post_sets/#{post_set_id} set. This would allow you to add and remove posts from it.
 
-\"Click here\":/post_set_maintainers/approve/#{id} to approve the request and become a maintainer.
+\"Click here\":/post_set_maintainers/#{id}/approve to approve the request and become a maintainer.
 
-\"Click here\":/post_set_maintainers/deny/#{id} to deny the request.
+\"Click here\":/post_set_maintainers/#{id}/deny to deny the request.
 
-\"Click here\":/post_set_maintainers/block/#{id} to deny the request and prevent yourself from being invited to this set again in the future."
+\"Click here\":/post_set_maintainers/#{id}/block to deny the request and prevent yourself from being invited to this set again in the future."
     Dmail.create_automated(
         to_id: user_id,
         title: "You were invite to be a maintainer of #{post_set.name}",

config/routes.rb

@@ -394,9 +394,9 @@ Rails.application.routes.draw do
   end
   resources :post_set_maintainers do
     member do
-      post :approve
-      post :block
-      post :deny
+      get :approve
+      get :block
+      get :deny
     end
   end
   resource :email do