Added Rubocop and initial config

app/controllers/passwords_controller.rb

@@ -1,16 +1,17 @@
+# frozen_string_literal: true
+
 class PasswordsController < ApplicationController
   allow_unauthenticated_access
-  before_action :set_user_by_token, only: %i[ edit update ]
+  before_action :set_user_by_token, only: %i[edit update]
 
-  def new
-  end
+  def new; end
 
   def create
     if user = User.find_by(email_address: params[:email_address])
       PasswordsMailer.reset(user).deliver_later
     end
 
-    redirect_to new_session_path, notice: "Password reset instructions sent (if user with that email address exists)."
+    redirect_to new_session_path, notice: 'Password reset instructions sent (if user with that email address exists).'
   end
 
   def edit
@@ -18,16 +19,17 @@ class PasswordsController < ApplicationController
 
   def update
     if @user.update(params.permit(:password, :password_confirmation))
-      redirect_to new_session_path, notice: "Password has been reset."
+      redirect_to new_session_path, notice: 'Password has been reset.'
     else
-      redirect_to edit_password_path(params[:token]), alert: "Passwords did not match."
+      redirect_to edit_password_path(params[:token]), alert: 'Passwords did not match.'
     end
   end
 
   private
-    def set_user_by_token
-      @user = User.find_by_password_reset_token!(params[:token])
-    rescue ActiveSupport::MessageVerifier::InvalidSignature
-      redirect_to new_password_path, alert: "Password reset link is invalid or has expired."
-    end
+
+  def set_user_by_token
+    @user = User.find_by_password_reset_token!(params[:token])
+  rescue ActiveSupport::MessageVerifier::InvalidSignature
+    redirect_to new_password_path, alert: 'Password reset link is invalid or has expired.'
+  end
 end

app/controllers/projects_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ProjectsController < ApplicationController
   before_action :fetch_project!, only: %w[show edit update destroy]
 
@@ -5,8 +7,7 @@ class ProjectsController < ApplicationController
     @projects = Project.all
   end
 
-  def show
-  end
+  def show; end
 
   def new
     @project = Project.new
@@ -21,8 +22,7 @@ class ProjectsController < ApplicationController
     end
   end
 
-  def edit
-  end
+  def edit; end
 
   def update
     if @project.update(project_params)
@@ -32,8 +32,7 @@ class ProjectsController < ApplicationController
     end
   end
 
-  def destroy
-  end
+  def destroy; end
 
   private
 

app/controllers/sessions_controller.rb

@@ -1,16 +1,19 @@
-class SessionsController < ApplicationController
-  allow_unauthenticated_access only: %i[ new create ]
-  rate_limit to: 10, within: 3.minutes, only: :create, with: -> { redirect_to new_session_url, alert: "Try again later." }
+# frozen_string_literal: true
 
-  def new
-  end
+class SessionsController < ApplicationController
+  allow_unauthenticated_access only: %i[new create]
+  rate_limit to: 10, within: 3.minutes, only: :create, with: lambda {
+    redirect_to new_session_url, alert: 'Try again later.'
+  }
+
+  def new; end
 
   def create
     if user = User.authenticate_by(params.permit(:email_address, :password))
       start_new_session_for user
       redirect_to after_authentication_url
     else
-      redirect_to new_session_path, alert: "Try another email address or password."
+      redirect_to new_session_path, alert: 'Try another email address or password.'
     end
   end
 

app/models/project.rb

@@ -1,23 +1,18 @@
+# frozen_string_literal: true
+
 class Project < ApplicationRecord
   validates :name, :code, presence: true
   validates :code, exclusion: { in: %w[new] }, uniqueness: true
 
-  has_many :tasks
+  has_many :tasks, dependent: :restrict_with_exception
 
   has_rich_text :description
 
-  before_validation :lowercase_code
+  normalizes :code, with: ->(code) { code.strip.downcase }
 
   def to_param
     return unless id
+
     code
   end
-
-  private
-
-  def lowercase_code
-    return if code.blank?
-
-    self.code = self.code.downcase
-  end
 end