Merge pull request #20 from KOH6/follow

ユーザーフォロー機能

app/controllers/follows_controller.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class FollowsController < ApplicationController
+  def create
+    @follow = current_user.following_status.create(followee_id: params[:user_id])
+    redirect_to request.referer
+  end
+
+  def destroy
+    @follow = current_user.following_status.find_by(followee_id: params[:user_id])
+    @follow.destroy
+    redirect_to request.referer
+  end
+end

app/models/follow.rb

@@ -4,6 +4,5 @@ class Follow < ApplicationRecord
   belongs_to :follower, class_name: 'User'
   belongs_to :followee, class_name: 'User'
 
-  validates :follower_id, presence: true
-  validates :followee_id, presence: true
+  validates :follower_id, presence: true, uniqueness: { scope: :followee_id }
 end

app/models/user.rb

@@ -58,6 +58,10 @@ def repost(post)
     reposts.find_by(post_id: post.id)
   end
 
+  def followee(user)
+    followees.find_by(id: user.id)
+  end
+
   private
 
   def attach_dummy_photo

app/views/posts/_post_detail.html.slim

@@ -10,6 +10,21 @@
         p.card-subtitle.text-muted.d-flex.align-items-center
           | @
           = post.user_user_name
+      .col-1
+        - if user_signed_in?
+          .dropdown.pb-4
+            a.text-muted[href="#" data-bs-toggle="dropdown" aria-expanded="false"]
+              i.fs-4.bi-three-dots.mx-2
+            ul.dropdown-menu.text-small.shadow.px-2.text-nowrap
+              li
+                - if current_user.followee(post.user).present?
+                  = link_to user_follow_path(post.user, current_user), data: { "turbo-method": :delete }, class: "text-dark text-decoration-none d-flex align-items-center text-center"
+                    i.bi-person-dash.mx-2
+                    = "@#{post.user_user_name}さんのフォローを解除"
+                - elsif post.user != current_user
+                  = link_to user_follows_path(post.user), data: { "turbo-method": :post }, class: "text-dark text-decoration-none d-flex align-items-center"
+                    i.bi-person-add.mx-2
+                    = "@#{post.user_user_name}さんをフォロー"
       .d-flex.flex-row
       - if post.content?
         span.card-text.my-2

app/views/posts/_post_footer.html.slim

@@ -4,7 +4,8 @@
     .col.d-flex.justify-content-around
       = link_to post_path(post), data: { turbo: false }, class: "text-decoration-none text-muted d-flex align-items-center fs-6 text-center"
         i.fs-6.bi-chat.mx-2
-        = post.comments.size
+        - if !post.comments.size.zero?
+          = post.comments.size
     .col.d-flex.justify-content-around
       - if current_user.repost(post).present?
         = link_to post_repost_path(post, current_user.repost(post) ), data: { "turbo-method": :delete }, class: "text-decoration-none d-flex align-items-center fs-6 text-center already-reposting"

config/routes.rb

@@ -11,7 +11,9 @@
     resources :likes, only: %i[create destroy]
     resources :reposts, only: %i[create destroy]
   end
-  resources :users, only: %i[show edit update]
+  resources :users, only: %i[show edit update] do
+    resources :follows, only: %i[create destroy]
+  end
   resources :comments, only: %i[create]
 
   root 'posts#index'