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posts_controller.rb

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class PostsController < ApplicationController
def index
# Post.allにorderメソッドを用いて、新しい投稿が上から順に表示されるようにしてください
@posts = Post.all.order(created_at: :desc)
end

def show
@post = Post.find_by(id: params[:id])
end

def new
end

def create
@post = Post.new(content: params[:content])
@post.save
redirect_to("/posts/index")
end
end

//降順にデータベースに投稿された内容を表示する

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