Introduction

I'm currently developing a memo app. A list of all the memos is displayed, but somehow I want to display a list of only the memos of the logged-in user on the memo list page.

This time we will learn about it.

Linking memos and users

First, add a column called user_id to the notes table (post-type table) to determine who made each post.

class CreateNotes < ActiveRecord::Migration[5.2]
  def change
    create_table :notes do |t|
      t.text :title
      t.integer :user_id
      t.integer :category_id
      t.text :explanation

      t.timestamps
    end
  end
end

$ rails db:migrate:reset

Save the id of the user who posted in the memo

When you save the post, put the information in the user_id column you added earlier. About build method

`notes.controller.rb`


def create
    @note = current_user.notes.build(note_params)
    @note.save
    redirect_to notes_path
  end

Show only user posts on the memo list page.

 <div class='container'>
   <div class='row'>
    <h2>Memo list</h2>
    <table class='table'>
      <thead>
        <tr>
          <th>title</th>
          <th>Category</th>
        </tr>
      </thead>
      <tbody>

        <% @notes.each do |note| %>
        <% if user_signed_in? && current_user.id == note.user_id %>   #Add here
        <tr>
          <td>
            <%= link_to note_path(note) do %>
              <%= note.title %>
            <% end %>
          </td>
          <td><%= note.category.name %></td>
        </tr>
        <% end %>
        <% end %>
      </tbody>
    </table>
   </div>
 </div>

Described in each statement (repetition) of the memo list.

<% if user_signed_in? && current_user.id == note.user_id %>

Is the user logged in with this description? And check if the id of the logged-in user and the id of the user who posted the memo are the same.

If true, it will be displayed! I think this is okay!

Finally

I think the explanation is difficult to understand, but I hope it will be helpful. Also, if there are any mistakes, I would appreciate it if you could teach me.

[RUBY] Rails Posts and User Linkage