質問編集履歴
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文法の修正を行いました
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Railsで投稿（Post）に紐付く画像（Image）が投稿できるアプリケーションを作成しております。
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※ImageにはCommentが紐付きます。
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Post > Image > Comment にてネストの関係にあるのですが、
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Imageに削除機能を設けて、削除した時にそれに紐付くCommentも削除されるようにしたいです。
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### 発生している問題・エラーメッセージ
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【image.rb】
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```rails
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class Image < ApplicationRecord
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belongs_to :post
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belongs_to :user
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has_many :likes, dependent: :destroy
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has_many :liking_users, through: :likes, source: :user
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has_many :comments, dependent: :destroy
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has_many :commenting_users, through: :comments, source: :user
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has_many :saves, dependent: :destroy
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has_many :users, through: :saves, source: :user
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validates :image, presence: true, unless: :text?
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mount_uploader :image, ImageUploader
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end
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```
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【post.rb】
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```rails
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end
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```
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```rails
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class Image < ApplicationRecord
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belongs_to :post
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belongs_to :user
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belongs_to :post_top_image, dependent: :destroy
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has_many :likes, dependent: :destroy
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has_many :liking_users, through: :likes, source: :user
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has_many :comments, dependent: :destroy
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has_many :commenting_users, through: :comments, source: :user
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has_many :saves, dependent: :destroy
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has_many :users, through: :saves, source: :user
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validates :image, presence: true, unless: :text?
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mount_uploader :image, ImageUploader
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end
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```
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```rails
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class Comment < ApplicationRecord
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belongs_to :post, counter_cache: :comments_count
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belongs_to :image, counter_cache: :comments_count
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belongs_to :user
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validates :content, presence: true
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end
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```
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ルート
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```rails
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Rails.application.routes.draw do
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devise_for :users
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root "top#index"
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resources :users, only: [:show, :edit, :update]
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resources :posts, only: [:index, :new, :create, :edit, :update] do
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collection do
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get 'likes_sort'
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get 'comments_sort'
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end
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resources :images do
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resources :comments, only: [:index, :create]
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member do
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post "save", to: "saves#create"
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delete "unsave", to: "saves#destroy"
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end
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end
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end
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post '/like/:post_id/:image_id' => 'likes#like', as: 'like'
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delete '/like/:post_id/:image_id' => 'likes#unlike', as: 'unlike'
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resources :saves, only: [:index]
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resources :histories, only: [:index]
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end
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```
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コントローラー
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```rails
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before_action :set_post
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【images_controller.rb】
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```rails
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def destroy
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image = Image.find(params[:id])
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image.destroy
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redirect_to post_images_path(@post)
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end
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def set_post
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@post = Post.find(params[:post_id])
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end
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ビュー
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【ビュー】
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```
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コントローラーにてdestroyをdeleteに変更するとImageモデルのデータを削除することはできました。
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Image
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今回はImageモデルに紐づいて削除したいモデルが複数あるため、destroyで実行したいです。
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@image = Image.find_by(params[:id], post_id: params[:post_id])
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まだまだ初心者で恐縮ですがご教示いただけますと幸いです。
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