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# app/forms/users/registration.rb

# frozen_string_literal: true

module Users
  class Registration
    include ActiveModel::Model

    attr_accessor :email, :password, :user, :space, :user_space

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# https://medium.com/@todariasova/rails-vim-101-essential-vim-plugins-for-ruby-on-rails-development-d74e808d186d

set nocompatible              " be iMproved, required
set number
syntax enable
set shell=bash
syntax on 
filetype plugin indent on
filetype on
filetype indent on

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class User < ActiveRecord::Base
  def save(*args)
    super
  rescue ActiveRecord::RecordNotUnique => error
    errors[:base] << error.message
    false
  end
end

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Docker

Files and Folders.

|
|\_ app
|...
|\_ docker
| |

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module ApplicationHelper
  def present(model)
    klass = "#{model.class}Presenter".constantize
    presenter = klass.new(model, self)
    yield(presenter) if block_given?
  end
end
- present(@post) do |post|
  %h2= post.title
  %p= post.author

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# config/routes.rb

YandexKassaIntegration::Application.routes.draw do
  # ...
  scope '/yandex_kassa' do
    controller 'yandex_kassa', constraints: { subdomain: 'ssl' } do
      post :check
      post :aviso
      get :success
      get :fail

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 # cd into directory with this file
 # open irb session: $ irb
 # require this lib: $ require './reverse.rb'
 # try the metod #reverse_v2 on any Array! $ (['one', 'two', 'three']).reverse_v2
 # ["three", "two", "one"]
 
 class Array
   def reverse_v2
     position, rev = count - 1, []
 

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class ApplicationService
  def self.call(*args, &block)
    new(*args, &block).call
  end
end

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ARG RUBY_VERSION
# See explanation below
FROM ruby:$RUBY_VERSION-slim-buster

ARG PG_MAJOR
ARG NODE_MAJOR
ARG BUNDLER_VERSION
ARG YARN_VERSION

# Common dependencies

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FROM ruby:2.6.1

RUN apt-get update -qq && apt-get install -y nodejs postgresql-client

ENV RAILS_ROOT /var/www/astecas
RUN mkdir -p $RAILS_ROOT

WORKDIR $RAILS_ROOT