React

1- npm install -g create-react-app

      then occur this error Error: EACCES: permission denied, symlink '../lib/node_modules/create-

       react-app/index.js' -> '/usr/bin/create-react-app'

       then use this sudo npm install -g create-react-app

2- npm install -g create-react-app

       Error:- react-scripts: not found

       fix:- yarn install or nvm version not support

Github Dump

GitHub

1- When you don't know what is the server port of PC 

        use this cmd-: ifconfig

            => sudo apt install net-tools (ifconfig inet 192.168.1.3)

2- Create a new branch on github   git checkout -b Dummy

       

        output:-  M   db/schema.rb

                      Switched to a new branch 'Dummy'

3- When you switched to exist branch   git checkout dev

        output:-  M   db/schema.rb

                       Switched to branch 'dev'

4- How to import dump database 

      pg_restore --verbose --clean --no-acl --no-owner -h localhost -U postgres -d database_name       

       latest.dump

===================================================================================

1- How to fetch GitHub Branch
   => git fetch -t
      => github username: kapilgoyal6
       => Access Token: 7a5f01b52a9ab0f7069604154686b4a4046ac7a0

2- How to List Branch on Git?

   * The command to list all branches in local and remote repositories is:
          git branch -a

   * If you require only listing the remote branches from Git Bash then use this command:
         git branch -r

   * You may also use the show-branch command for seeing the branches and their commits as 
      follows:
        git show-branch

Gem devise

Gem devise

1.  gem 'devise'

   gem 'bootstrap', '~> 4.0.0.alpha3'

2. Run $ bundle install

3. Add Bootstrap’s styles:  stylesheets/application.scss 
         @import "bootstrap";


4.   Run the following commands to install Devise, generate a new User model,
      and copy views for further cutomization: 
          $ rails generate devise:install

       $ rails generate devise User
       $ rails generate devise:views
       $ rails db:migrate

 5. Now restrict access to all pages of the site to authenticated users only:
     application_controller.rb  => 

class ApplicationController < ActionController::Base

 before_action :authenticate_user!

 before_action :configure_permitted_parameters, if: :devise_controller?

 protected

  def configure_permitted_parameters
   
   devise_parameter_sanitizer.permit(:sign_up) {|u| u.permit(:email,:password,:password_confirmation,:first_name,:last_name,:company_id,:user_role_id,
          :start_date,:end_date,:monthly_charge,:notes,:image,:active)}

   devise_parameter_sanitizer.permit(:account_update) {|u| u.permit(:email,:password,:password_confirmation,:first_name,:last_name,:company_id,:user_role_id,
          :start_date,:end_date,:monthly_charge,:notes,:image,:active, :current_password)}
  end
end 

6. Add this code to (Layouts/application.html.erb)

          <% if user_signed_in? %>
             Logged in as <strong><%= current_user.email %></strong>
             <%= link_to 'Edit Profile', edit_user_registration_path, :class=>'navbar-link' %> /
             <%= link_to 'Logout',   destroy_user_session_path, :class=>'navbar-link' %> / 

          <%  else  %>
            <%= link_to "Sign up", new_user_registration_path, :class=>'navbar-link' %> |
            <%= link_to "Login", new_user_session_path, :class=>'navbar-link' %>
         <%  end %> 

reCaptcha

ReCaptcha

1. Open your Gemfile and add this code:

        gem "recaptcha", require: "recaptcha/rails"

2. Now run bundle

     bundle install

3- Then I inherited devise registration controller and overridden the create method of it.

        

1. class User::RegistrationsController < Devise::RegistrationsController
2. #
3. # Other Codes
4. def create
5. ## To build the resource
6. build_resource(sign_up_params)
7. ## Verifying Captcha
8. if verify_recaptcha(model: resource)
9. super
10. else
11. render 'new'
12. end
13. end
14. #
15. # Other Codes
16. end

4. Now you need to get the public and secret key by registering into Google recaptcha account.

    The link is https://www.google.com/recaptcha/admin

    

    https://www.google.com/recaptcha/admin/create#list

    1-  Label - recaptcha Test

    2-  reCAPTCHA type - reCAPTCHA v2  and after select 1 option 

          ("I'm not a robot" tickbox)

    3-  Domains -  localhost, for heroku- heroku.com

   

5. Now add the configurations for recaptcha at /config/initializer/recaptcha.rb

     

1. Recaptcha.configure do |config|
2. config.public_key = 'Replace with your public key'
3. config.private_key = 'Replace with private key'
4. end

OR

                     add .env file in project source add key

 export RECAPTCHA_SITE_KEY = '6LcLFdIUAAAAAFKQUU4b3HnWYtssgTWdsnQZsVXU'

 export RECAPTCHA_SECRET_KEY = '6LcLFdIUAAAAAA4Z66WTWojY0_RsyR7DqnhtOYUf'

6. Add the recaptcha tags to app/views/devise/registrations/new

       <div><%= recaptcha_tags %></div>

7. Now we need to tell the route to go to our registration controller instead of devise registration controller. So              routes needs to be modified to:

    

       devise_for :users, :controllers => {:registrations => "user/registrations"}

Link for reCaptch:-

   1=> http://findnerd.com/list/view/Integrating-Recaptcha-in-Rails-with-Devise/19152/

   2=> https://www.sitepoint.com/quick-tip-add-recaptcha-to-your-rails-application/

   3=> https://github.com/billhimmelsbach/recaptcha-rails