[Ruby on Rails] Logical deletion (withdrawal function)
Target
Development environment
ruby 2.5.7 Rails 5.2.4.3 OS: macOS Catalina
Premise
-[Ruby on Rails] How to log in with only your name and password using gem devise -[Ruby on Rails] Change URL id to column name We will continue to edit the code.
flow
Add 1 column 2 Edit model 3 Edit controller
Add column
Terminal
$ rails g migration AddIsValidToUsers is_valid:boolean
Added default: true and null: false. By using boolean, it is determined whether or not you have unsubscribed with ture or false. In the following cases, the initial value is set to true, so if you have already withdrawn, it will be false.
db/migrate/xxxxxxxxxxxxx_add_is_valid_to_users.rb
class AddIsValidToUsers < ActiveRecord::Migration[5.2]
def change
add_column :users, :is_valid, :boolean, default: true, null: false
end
end
Terminal
$ rails db:migrate
Editing controller
Create unsubscribe screen and unsubscribe action
app/controllers/homes_controller.rb
def unsubscribe
@user = User.find_by(name: params[:name])
end
def withdraw
@user = User.find_by(name: params[:name])
@user.update(is_valid: false)
reset_session
redirect_to root_path
end
A description that prevents login after withdrawal.
app/controllers/users/sessions_controller.rb
class Users::SessionsController < Devise::SessionsController
before_action :reject_inactive_user, only: [:create]
...
def reject_inactive_user
@user = User.find_by(name: params[:user][:name])
if @user
if @user.valid_password?(params[:user][:password]) && [email protected]_valid
redirect_to new_user_session_path
end
end
end
end
Edit routes
config/routes.rb
get 'unsubscribe/:name' => 'homes#unsubscribe', as: 'confirm_unsubscribe'
patch ':id/withdraw/:name' => 'homes#withdraw', as: 'withdraw_user'
put 'withdraw/:name' => 'users#withdraw'
Edit view
erb:app/views/homes/unsubscribe.html.erb
<div>
<h2>Do you really want to unsubscribe?</h2>
<div>
<p>To unsubscribe, click "Unsubscribe".</p>
</div>
<div>
<%= link_to 'Do not withdraw', mypage_path(@user) %>
<%= link_to "Withdraw", withdraw_user_path(@user), method: :patch %>
</div>
</div>
reference
Summary
I think there are various advantages and disadvantages of logical deletion, Customer information is important when operating a service, so It is better to unsubscribe by logical deletion instead of physical deletion It is recommended because it can be used as a means of revival.
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