Add password reset

app/assets/stylesheets/password_resets.scss

+// Place all the styles related to the PasswordResets controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: https://sass-lang.com/

app/controllers/password_resets_controller.rb

+class PasswordResetsController < ApplicationController
+  include SessionsHelper
+  
+  before_action :get_user, only: [:edit, :update]
+  before_action :valid_user, only: [:edit, :update]
+  before_action :check_expiration, only: [:edit, :update] # Case (1)
+
+  def new
+  end
+
+  def create
+    @user = User.find_by(email: params[:password_reset][:email].downcase)
+    if @user
+      @user.create_reset_digest
+      @user.send_password_reset_email
+      flash[:info] = "Email sent with password reset instructions"
+      redirect_to root_url
+    else
+      flash.now[:danger] = "Email address not found"
+      render 'new'
+    end
+  end
+
+  def edit
+  end
+
+  def update
+    if params[:user][:password].empty?
+      @user.errors.add(:password, "can't be empty")
+      render 'edit'
+    elsif @user.update(user_params)
+      log_in @user
+      flash[:success] = "Password has been reset."
+      redirect_to @user
+    else
+      render 'edit'
+    end
+  end
+
+  private
+
+    def user_params
+      params.require(:user).permit(:password, :password_confirmation)
+    end
+
+    def get_user
+      @user = User.find_by(email: params[:email])
+    end
+    # Confirms a valid user.
+    def valid_user
+      unless (@user && @user.activated? &&
+        @user.authenticated?(:reset, params[:id]))
+        redirect_to root_url
+      end
+    end
+    # Checks expiration of reset token.
+    def check_expiration
+      if @user.password_reset_expired?
+        flash[:danger] = "Password reset has expired."
+        redirect_to new_password_reset_url
+      end
+    end
+end

app/controllers/users_controller.rb

@@ -6,11 +6,12 @@ class UsersController < ApplicationController
   before_action :admin_user, only: :destroy
 
   def show
-    @user = User.find(params[:id])
+    @user = User. find(params[:id] )
+    redirect_to root_url and return unless true
   end
 
   def index
-    @users = User.where(activated: FILL_IN).paginate(page: params[:page])
+    @users = User. where(activated: true) . paginate(page: params[:page] )
   end
 
   def new
@@ -42,7 +43,13 @@ class UsersController < ApplicationController
     end
   end
 
-  private
+  def destroy
+    User.find(params[:id]).destroy
+    flash[:success] = "User deleted"
+    redirect_to users_url
+  end
+  
+private
 
   def user_params
     params.require(:user).permit(:name, :email, :password, :password_confirmation)
@@ -61,12 +68,6 @@ class UsersController < ApplicationController
     redirect_to(root_url) unless current_user?(@user)
   end
 
-    def destroy
-      User.find(params[:id]).destroy
-      flash[:success] = "User deleted"
-      redirect_to users_url
-    end
-
   # Confirms an admin user.
   def admin_user
     redirect_to(root_url) unless current_user.admin?

app/helpers/password_resets_helper.rb

+module PasswordResetsHelper
+end

app/mailers/user_mailer.rb

@@ -4,9 +4,8 @@ class UserMailer < ApplicationMailer
     mail to: user.email, subject: "Account activation"
   end
 
-  def password_reset
-    @greeting = "Hi"
-
-    mail to: "to@example.org"
+  def password_reset(user)
+    @user = user
+    mail to: user.email, subject: "Password reset"
   end
 end

app/models/user.rb

 class User < ApplicationRecord
-  attr_accessor :remember_token, :activation_token
+  attr_accessor :remember_token, :activation_token, :reset_token
   before_save :downcase_email
   before_create :create_activation_digest
   validates :name, presence: true, length: { maximum: 50 }
@@ -54,6 +54,20 @@ class User < ApplicationRecord
     BCrypt::Password.new(digest).is_password?(token)
   end
 
+  # Sets the password reset attributes.
+  def create_reset_digest
+    self.reset_token = User.new_token
+    update_columns(reset_digest:  User.digest(reset_token), reset_sent_at: Time.zone.now)
+  end
+  
+  # Sends password reset email.
+  def send_password_reset_email
+    UserMailer.password_reset(self).deliver_now
+  end
+  # Returns true if a password reset has expired.
+  def password_reset_expired?
+    reset_sent_at < 2.hours.ago
+  end
   private
     # Converts email to all lower-case.
     def downcase_email

app/views/password_resets/edit.html.erb

+<% provide(:title, 'Reset password') %>
+<h1>Reset password</h1>
+
+<div class="row">
+  <div class="col-md-6 offset-3">
+    <%= form_with(model: @user, url: password_reset_path(params[:id]),
+    local: true) do |f| %>
+      <%= render 'shared/error_messages' %>
+
+      <%= hidden_field_tag :email, @user.email %>
+
+      <%= f.label :password %>
+      <%= f.password_field :password, class: 'form-control' %>
+
+      <%= f.label :password_confirmation, "Confirmation" %>
+      <%= f.password_field :password_confirmation, class: 'form-control' %>
+      
+      <%= f.submit "Update password", class: "btn btn-primary" %>
+    <% end %>
+  </div>
+</div>
\ No newline at end of file

app/views/password_resets/new.html.erb

+<% provide(:title, "Forgot password") %>
+<h1>Forgot password</h1>
+
+<div class="row">
+  <div class="col-md-6 offset-3">
+    <%= form_with(url: password_resets_path, scope: :password_reset,
+    local: true) do |f| %>
+      <%= f.label :email %>
+      <%= f.email_field :email, class: 'form-control' %>
+      <%= f.submit "Submit", class: "btn btn-primary" %>
+    <% end %>
+  </div>
+</div>
\ No newline at end of file

app/views/sessions/new.html.erb

@@ -8,6 +8,7 @@
     <%= f.email_field :email, class: 'form-control' %>
 
     <%= f.label :password %>
+    <%= link_to "(forgot password)", new_password_reset_path %>
     <%= f.password_field :password, class: 'form-control' %>
 
     <%= f.label :remember_me, class: "checkbox inline" do %>

app/views/user_mailer/password_reset.html.erb

-<h1>User#password_reset</h1>
+<h1>Password reset</h1>
+
+<p>To reset your password click the link below:</p>
+
+<%= link_to "Reset password", edit_password_reset_url(@user.reset_token,
+email: @user.email) %>
+<p>This link will expire in two hours.</p>
 
 <p>
-  <%= @greeting %>, find me in app/views/user_mailer/password_reset.html.erb
+If you did not request your password to be reset, please ignore this email and
+your password will stay as it is.
 </p>
\ No newline at end of file

app/views/user_mailer/password_reset.text.erb

-User#password_reset
+To reset your password click the link below:
 
-<%= @greeting %>, find me in app/views/user_mailer/password_reset.text.erb
+<%= edit_password_reset_url(@user.reset_token, email: @user.email) %>
+
+This link will expire in two hours.
+If you did not request your password to be reset, please ignore this email and
+your password will stay as it is.
\ No newline at end of file

config/routes.rb

 Rails.application.routes.draw do
 
+  get 'password_resets/new'
+  get 'password_resets/edit'
   root 'static_pages#home'
   get  '/home',   to: 'static_pages#home'
   get  '/help',   to: 'static_pages#help'
@@ -11,6 +13,7 @@ Rails.application.routes.draw do
   delete '/logout',  to: 'sessions#destroy'
   resources :users
   resources :account_activations, only: [:edit]
-  end
+  resources :password_resets, only: [:new, :create, :edit, :update]
+end
 
 

db/migrate/20210628041628_add_reset_to_users.rb

+class AddResetToUsers < ActiveRecord::Migration[6.1]
+  def change
+    add_column :users, :reset_digest, :string
+    add_column :users, :reset_sent_at, :datetime
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_06_23_062616) do
+ActiveRecord::Schema.define(version: 2021_06_28_041628) do
 
   create_table "users", force: :cascade do |t|
     t.string "name"
@@ -23,6 +23,8 @@ ActiveRecord::Schema.define(version: 2021_06_23_062616) do
     t.string "activation_digest"
     t.boolean "activated", default: false
     t.datetime "activated_at"
+    t.string "reset_digest"
+    t.datetime "reset_sent_at"
     t.index ["email"], name: "index_users_on_email", unique: true
   end
 

test/mailers/previews/user_mailer_preview.rb

@@ -10,7 +10,8 @@ class UserMailerPreview < ActionMailer::Preview
 
   # Preview this email at http://localhost:3000/rails/mailers/user_mailer/password_reset
   def password_reset
-    UserMailer.password_reset
+    user = User.first
+    user.reset_token = User.new_token
+    UserMailer.password_reset(user)
   end
-
 end