ActionController::UrlGenerationError in Posts#index

前提・実現したいこと

Rubyで編集機能を実装しようとしたら、下記のエラーが発生しました。
ご教授の方よろしくお願いします。

発生している問題・エラーメッセージ

ActionController::UrlGenerationError in Posts#index
Showing /Users/hyjs0214/projects/blog/app/views/posts/index.html.erb where line #13 raised:

No route matches {:action=>"edit", :controller=>"posts"}, missing required keys: [:id]

該当のソースコード

index.html.erb

<div class="center">
<div class="row">
  <div class="col s12 m6">
  <% @posts.each do |post| %>
    <div class="card blue-grey darken-1">
      <div class="card-content white-text">
        <p>
          <%= simple_format(post.text) %>
        </p>
      </div>
      <div class="card-action">
        <%= link_to '削除', "/posts/#{post.id}", method: :delete %>
        <%= link_to '編集', edit_post_path, method: :get %>
      </div>
    </div>
  <% end %>
  <%= paginate(@posts) %>
</div>
</div>
</div>

<script type="text/javascript" src="./app.js"></script>

試したこと

rake routesでprefixが間違っていないかどうか確認したのですが問題なさそうでした。

補足情報（FW/ツールのバージョンなど）

他のコード

posts_controller.rb

class PostsController < ApplicationController

  before_action :move_to_index, except: :index

  def index
    @posts = Post.all.includes(:user).order("created_at DESC").page(params[:page]).per(5)
  end

  def new
    @post = Post.new
  end

  def create
    Post.create(text: create_params[:text], user_id: current_user.id)
    redirect_to controller: :posts, action: :index
  end

  def destroy
    post = Post.find(params[:id])
    if post.user_id == current_user.id
      post.destroy
    end
    redirect_to controller: :posts, action: :index
  end

  def edit
    @post = Post.find(params[:id])
  end

  def update
    post = Post.find(params[:id])
    if post.user_id == current_user.id
      post.update(create_params)
    end
    redirect_to controller: :posts, action: :index
  end

  private
  def create_params
    params.require(:post).permit(:text)
  end

  def move_to_index
    redirect_to action: :index unless user_signed_in?
  end

end

routes.rb

Rails.application.routes.draw do
  devise_for :users
  root 'posts#index'
  resources :posts, only: [:index,:new,:create,:destroy,:edit,:update]
end

edit.html.erb

<%= form_for @post do |f| %>
  <div style="margin: 8px 0">
    <%= f.label :編集, style: { 'margin-right' => 8 } %>
    <%= f.text_area :text, placeholder: '書きたいことを書いてください', style: 'width: 100%;height: 300px;' %>
  </div>
  <div class="row">
    <div class="col10 push1">
      <%= button_tag type: "submit", class: "btn btn--block" do %>
      更新する<i class="icon-arrow-right"></i>
      <% end %>
    </div>
  </div>
<% end %>

rake routes

 Prefix Verb   URI Pattern                                                                              Controller#Action
         new_user_session GET    /users/sign_in(.:format)                                                                 devise/sessions#new
             user_session POST   /users/sign_in(.:format)                                                                 devise/sessions#create
     destroy_user_session DELETE /users/sign_out(.:format)                                                                devise/sessions#destroy
        new_user_password GET    /users/password/new(.:format)                                                            devise/passwords#new
       edit_user_password GET    /users/password/edit(.:format)                                                           devise/passwords#edit
            user_password PATCH  /users/password(.:format)                                                                devise/passwords#update
                          PUT    /users/password(.:format)                                                                devise/passwords#update
                          POST   /users/password(.:format)                                                                devise/passwords#create
 cancel_user_registration GET    /users/cancel(.:format)                                                                  devise/registrations#cancel
    new_user_registration GET    /users/sign_up(.:format)                                                                 devise/registrations#new
   edit_user_registration GET    /users/edit(.:format)                                                                    devise/registrations#edit
        user_registration PATCH  /users(.:format)                                                                         devise/registrations#update
                          PUT    /users(.:format)                                                                         devise/registrations#update
                          DELETE /users(.:format)                                                                         devise/registrations#destroy
                          POST   /users(.:format)                                                                         devise/registrations#create
                     root GET    /                                                                                        posts#index
                    posts GET    /posts(.:format)                                                                         posts#index
                          POST   /posts(.:format)                                                                         posts#create
                 new_post GET    /posts/new(.:format)                                                                     posts#new
                edit_post GET    /posts/:id/edit(.:format)                                                                posts#edit
                     post PATCH  /posts/:id(.:format)                                                                     posts#update
                          PUT    /posts/:id(.:format)                                                                     posts#update
                          DELETE /posts/:id(.:format)                                                                     posts#destroy
       rails_service_blob GET    /rails/active_storage/blobs/:signed_id/*filename(.:format)                               active_storage/blobs#show
rails_blob_representation GET    /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
       rails_disk_service GET    /rails/active_storage/disk/:encoded_key/*filename(.:format)                              active_storage/disk#show
update_rails_disk_service PUT    /rails/active_storage/disk/:encoded_token(.:format)                                      active_storage/disk#update
     rails_direct_uploads POST   /rails/active_storage/direct_uploads(.:format)                                           active_storage/direct_uploads#create