Using Zend Framework 2
$11.99
Minimum price
$19.99
Suggested price

Using Zend Framework 2

The book about Zend Framework 2 that is easy to read and understand for beginners
  • 503

    Pages

  • English

  • PDF

  • EPUB

  • MOBI

  • WEB

About the Book

The "Using Zend Framework 2" is a book about programming websites with Zend Framework 2. With this e-Book, you can save your time and efforts learning ZF2.

The author strives to give material starting with simple things that a beginner should understand. Advanced things go last in a chapter. This makes this book the first Zend Framework book that is easy to read and understand for a newbie.

This ZF2 book's text is illustrated with code samples (the source code is published on GitHub). Each sample is a complete web-site you can install and run yourself to see Zend Framework 2 in action. You can even use the samples as a base for your own web sites.

About the Author

Oleg Krivtsov
Oleg Krivtsov

Oleg Krivtsov has been professionally developing C/C++ and PHP software since 2005. He received a PhD degree in Computer Science from Tomsk Polytechnic University in 2010. Oleg also taught Digital Signal Processing in the university. He likes contributing to open-source and writing programming articles for popular web resources, like CodeProject. This writing passion has also inspired him to create this book about Zend Framework 2. Besides writing books, Oleg loves skiing and watching Formula-1.

Table of Contents

  • Preface
    • Why to Read this Book?
    • Zend Framework Explained
    • See ZF2 Wider
    • ZF2 Book for Beginners
    • Structure of the Book
    • Learn ZF2 by Example
    • Book Reviews
    • Testimonials
    • Your Feedback
    • Acknowledgements
  • 1. Introduction to Zend Framework 2
    • 1.1 What is Zend Framework 2?
    • 1.2 License
    • 1.3 What Companies Prefer Zend Framework 2?
    • 1.4 Distributions
    • 1.5 User Support
    • 1.6 Supported Operating Systems
    • 1.7 Server Requirements
    • 1.8 Security
    • 1.9 Performance
    • 1.10 Design Patterns
    • 1.11 Components
    • 1.12 ZF2 Service Components
    • 1.13 Differences with Zend Framework 1
      • 1.13.1 Backwards Compatibility
      • 1.13.2 ZFTool
      • 1.13.3 Modules
      • 1.13.4 Aspect Oriented Design
      • 1.13.5 Namespaces
      • 1.13.6 Configuration
      • 1.13.7 Service Manager
    • 1.14 Competing Frameworks
    • 1.15 Summary
  • 2. Zend Skeleton Application
    • 2.1 Getting Zend Skeleton Application
    • 2.2 Typical Directory Structure
    • 2.3 Installing Dependencies with Composer
    • 2.4 Apache Virtual Host
    • 2.5 Opening the Web Site in Your Browser
    • 2.6 Creating NetBeans Project
    • 2.7 Hypertext Access File (.htaccess)
    • 2.8 Blocking Access to the Web Site by IP Address
    • 2.9 HTTP Authentication
    • 2.10 Having Multiple Virtual Hosts
    • 2.11 Hosts File
    • 2.12 Advanced Composer Usage
      • 2.12.1 Package Names and Versions
      • 2.12.2 Installing and Updating Packages
      • 2.12.3 Virtual Packages
      • 2.12.4 Composer and Version Control Systems
    • 2.13 Summary
  • 3. Web Site Operation
    • 3.1 PHP Namespaces
    • 3.2 PHP Interfaces
    • 3.3 PHP Class Autoloading
    • 3.4 PSR-0 Standard
    • 3.5 HTTP Request and Response
    • 3.6 Site Entry Script
    • 3.7 Events & Application’s Life Cycle
    • 3.8 Application Configuration
      • 3.8.1 Application-Level Config Files
      • 3.8.2 Application-Level Extra Config Files
      • 3.8.3 Module-Level Config Files
      • 3.8.4 Combining the Configuration Files
    • 3.9 Module Entry Point
    • 3.10 Class Autoloading in Zend Framework 2
      • 3.10.1 Composer-provided Autoloader
      • 3.10.2 Zend\Loader Component
        • 3.10.2.1 Standard Autoloader
        • 3.10.2.2 PSR-0 and Src Directory Structure
        • 3.10.2.3 Class Map Autoloader
    • 3.11 Service Manager
      • 3.11.1 Service Locator
      • 3.11.2 Canonical Service Names
      • 3.11.3 Registering a Service
      • 3.11.4 Registering Invokable Classes
      • 3.11.5 Registering Factories
      • 3.11.6 Registering Service Aliases
      • 3.11.7 Service Manager Configuration
    • 3.12 Summary
  • 4. Model-View-Controller
    • 4.1 Get the Hello World Example from GitHub
    • 4.2 Separating Business Logic from Presentation
    • 4.3 Controllers
      • 4.3.1 Base Controller Class
      • 4.3.2 Retrieving Data from HTTP Request
      • 4.3.3 Retrieving GET or POST Variables
      • 4.3.4 Putting Data to HTTP Response
    • 4.4 Variable Containers
    • 4.5 Controller Registration
    • 4.6 When to Create a New Controller?
    • 4.7 Controller Plugins
      • 4.7.1 Writing Own Controller Plugin
    • 4.8 Views
    • 4.9 View Helpers
    • 4.10 View Template Names & View Resolver
    • 4.11 Disabling the View Rendering
    • 4.12 Error Pages
    • 4.13 Models
    • 4.14 Model Types
      • 4.14.1 Entities
      • 4.14.2 Value Objects
      • 4.14.3 Services
      • 4.14.4 Factories
      • 4.14.5 Repositories
    • 4.15 Determining the Correct Model Type
    • 4.16 Skinny Controllers, Fat Models, Simple Views
      • 4.16.1 Skinny Controllers
      • 4.16.2 Fat Models
      • 4.16.3 Simple View Templates
    • 4.17 Summary
  • 5. URL Routing
    • 5.1 URL Structure
    • 5.2 Route Types
    • 5.3 Combining Route Types
      • 5.3.1 Simple Route Stack
      • 5.3.2 Tree Route Stack
    • 5.4 Routing Configuration
      • 5.4.1 Configuration for Simple Routes
      • 5.4.2 Configuration for Nested Routes
      • 5.4.3 Default Routing Configuration in Zend Skeleton Application
    • 5.5 Literal Route Type
    • 5.6 Segment Route Type
    • 5.7 Regex Route Type
    • 5.8 Wildcard Route Type
    • 5.9 Other Route Types
    • 5.10 Extracting Parameters from Route
      • 5.10.1 Retrieving the RouteMatch and the Router Object
    • 5.11 Generating URLs from Route
      • 5.11.1 Generating URLs in View Templates
        • 5.11.1.1 Passing Parameters
        • 5.11.1.2 Generating Absolute URLs
        • 5.11.1.3 Specifying Query Part
      • 5.11.2 Generating URLs in Controllers
      • 5.11.3 URL Encoding
    • 5.12 Writing Own Route Type
      • 5.12.1 RouteInterface
      • 5.12.2 Custom Route Class
    • 5.13 Summary
  • 6. Page Appearance and Layout
    • 6.1 About CSS Stylesheets and Twitter Bootstrap
    • 6.2 Page Layout in Zend Framework 2
    • 6.3 Modifying the Default Page Layout
    • 6.4 Switching between Layouts
      • 6.4.1 Setting Layout for All Actions of a Controller
    • 6.5 Partial Views
    • 6.6 Placeholder View Helper
    • 6.7 Adding Scripts to a Web Page
      • 6.7.1 Example
    • 6.8 Adding CSS Stylesheets to a Web Page
      • 6.8.1 Example
    • 6.9 Writing Own View Helpers
      • 6.9.1 Menu
      • 6.9.2 Breadcrumbs
    • 6.10 View Models and Page Composition
    • 6.11 Summary
  • 7. Collecting User Input with Forms
    • 7.1 Get the Form Demo Sample from GitHub
    • 7.2 About HTML Forms
      • 7.2.1 Fieldsets
      • 7.2.2 Example: “Contact Us” Form
      • 7.2.3 GET and POST Methods
    • 7.3 Styling HTML Forms with Twitter Bootstrap
    • 7.4 Retrieving Form Data in a Controller’s Action
    • 7.5 Forms and Model-View-Controller
      • 7.5.1 A Typical Form Usage Workflow
    • 7.6 A Form Model
    • 7.7 Form Elements
      • 7.7.1 Adding Elements to a Form Model
      • 7.7.2 Method 1: Passing an Instance of an Element
      • 7.7.3 Method 2: Using Array Specification
    • 7.8 Example: Creating the Contact Form Model
    • 7.9 Adding Form Validation Rules
      • 7.9.1 Input Filter
      • 7.9.2 Adding Inputs to Input Filter
        • 7.9.2.1 Filter Configuration
        • 7.9.2.2 Validator Configuration
        • 7.9.2.3 Attaching Input Filter to Form Model
      • 7.9.3 Creating Input Filter for the Contact Form
    • 7.10 Using the Form in a Controller’s Action
      • 7.10.1 Passing Form Data to a Model
    • 7.11 Form Presentation
      • 7.11.1 Preparing the Form Model for Rendering
    • 7.12 Standard Form View Helpers
      • 7.12.1 Rendering a Form Element
      • 7.12.2 Rendering an Element’s Validation Errors
      • 7.12.3 Rendering an Element’s Label
      • 7.12.4 Rendering a Form Row
      • 7.12.5 Rendering the Entire Form
    • 7.13 Example: Creating the View Template for the Contact Form
      • 7.13.1 Applying the Bootstrap CSS Styles to Form
      • 7.13.2 Styling the Validation Errors List
      • 7.13.3 Adding the “Thank You” & “Error Sending Email” Pages
      • 7.13.4 Results
    • 7.14 Summary
  • 8. Transforming Input Data with Filters
    • 8.1 About Filters
      • 8.1.1 FilterInterface
    • 8.2 Standard Filters Overview
    • 8.3 Instantiating a Filter
      • 8.3.1 Method 1: Instantiating a Filter Manually
      • 8.3.2 Method 2: Constructing a Filter with StaticFilter
      • 8.3.3 Method 3: Constructing a Filter From Array
    • 8.4 About Filter Plugin Manager
    • 8.5 Filter’s Behavior in Case of Incorrect Input Data
    • 8.6 Filter Usage Examples
      • 8.6.1 Filters Casting Input Data to a Specified Type
        • 8.6.1.1 Int Filter
        • 8.6.1.2 Boolean Filter
        • 8.6.1.3 Null Filter
        • 8.6.1.4 DateTimeFormatter Filter
      • 8.6.2 Filters Performing Manipulations on a File Path
        • 8.6.2.1 BaseName Filter
        • 8.6.2.2 Dir Filter
        • 8.6.2.3 RealPath Filter
      • 8.6.3 Filters Performing Compression and Encryption of Input Data
        • 8.6.3.1 Compress Filter
        • 8.6.3.2 Encrypt Filter
      • 8.6.4 Filters Manipulating String Data
        • 8.6.4.1 StringToLower Filter
        • 8.6.4.2 PregReplace Filter
        • 8.6.4.3 StripTags Filter
        • 8.6.4.4 StripNewlines Filter
        • 8.6.4.5 UriNormalize Filter
      • 8.6.5 Organizing Filters in a Chain
      • 8.6.6 Custom Filtering with the Callback Filter
        • 8.6.6.1 Example
    • 8.7 Writing Your Own Filter
      • 8.7.1 Using the PhoneFilter Class
    • 8.8 Summary
  • 9. Checking Input Data with Validators
    • 9.1 About Validators
      • 9.1.1 ValidatorInterface
    • 9.2 Standard Validators Overview
    • 9.3 Validator Behaviour in Case of Invalid or Unacceptable Data
    • 9.4 Instantiating a Validator
      • 9.4.1 Method 1. Manual Instantiation of a Validator
      • 9.4.2 Method 2. Using StaticValidator Wrapper
      • 9.4.3 Method 3. Using an Array Configuration
    • 9.5 About Validator Plugin Manager
    • 9.6 Validator Usage Examples
      • 9.6.1 Validators for Checking Value Conformance to Certain Format
        • 9.6.1.1 Ip Validator
        • 9.6.1.2 Hostname Validator
        • 9.6.1.3 Uri Validator
        • 9.6.1.4 Date Validator
        • 9.6.1.5 Regex Validator
      • 9.6.2 Validators for Checking a Numerical Value Lies in a Given Range
        • 9.6.2.1 NotEmpty Validator
        • 9.6.2.2 Between Validator
        • 9.6.2.3 InArray Validator
        • 9.6.2.4 StringLength Validator
      • 9.6.3 Organizing Validators in a Chain
      • 9.6.4 Custom Validation with the Callback Validator
        • 9.6.4.1 Example
    • 9.7 Writing Own Validator
      • 9.7.1 Using the PhoneValidator Class
    • 9.8 Using Filters & Validators Outside a Form
    • 9.9 Summary
  • 10. Uploading Files with Forms
    • 10.1 About HTTP File Uploads
      • 10.1.1 HTTP Binary Transfer Encoding
      • 10.1.2 $_FILES Super-Global Array in PHP
    • 10.2 Accessing Uploaded Files in ZF2
    • 10.3 File Uploads & ZF2 Form Model
    • 10.4 Validating Uploaded Files
    • 10.5 Filtering Uploaded Files
    • 10.6 InputFilter Container & File Uploads
      • 10.6.1 FileInput
      • 10.6.2 Executing Validators before Filters
    • 10.7 Controller Action & File Uploads
    • 10.8 Example: Image Gallery
      • 10.8.1 Adding ImageForm Model
      • 10.8.2 Adding Validation Rules to ImageForm Model
      • 10.8.3 Writing ImageManager Service
      • 10.8.4 Adding ImageController
        • 10.8.4.1 Adding Upload Action & Corresponding View Template
        • 10.8.4.2 Adding Index Action & Corresponding View Template
        • 10.8.4.3 Adding File Action
        • 10.8.4.4 Registering the ImageController
      • 10.8.5 Results
    • 10.9 Summary
  • 11. Advanced Usage of Forms
    • 11.1 Form Security Elements
      • 11.1.1 CAPTCHA
        • 11.1.1.1 CAPTCHA Types
        • 11.1.1.2 CAPTCHA Form Element & View Helper
      • 11.1.2 Example 1: Adding Image CAPTCHA to the ContactForm
      • 11.1.3 Example 2: Adding a FIGlet CAPTCHA to the ContactForm
      • 11.1.4 Example 3: Adding reCaptcha CAPTCHA to the ContactForm
      • 11.1.5 CSRF Prevention
        • 11.1.5.1 Example: Adding a CSRF Element to Form
    • 11.2 Summary
  • 12. Database Management with Doctrine ORM
    • 12.1 Get Blog Example from GitHub
    • 12.2 Creating a Simple MySQL Database
      • 12.2.1 Creating New Schema
      • 12.2.2 Creating Tables
      • 12.2.3 Importing Ready Database Schema
    • 12.3 Integrating Doctrine ORM with Zend Framework 2
      • 12.3.1 Installing Doctrine Components with Composer
      • 12.3.2 Loading Doctrine Integration Modules on Application Start Up
      • 12.3.3 Doctrine Configuration Overview
      • 12.3.4 Overriding the Default Doctrine Configuration
    • 12.4 Specifying Database Connection Parameters
    • 12.5 About Doctrine Entities
      • 12.5.1 Annotations
    • 12.6 Creating Entities
      • 12.6.1 Adding Post Entity
      • 12.6.2 Adding the Comment and Tag Entities
      • 12.6.3 Specifying Relations between Entities
        • 12.6.3.1 OneToMany/ManyToOne
        • 12.6.3.2 ManyToMany
      • 12.6.4 Specifying Entity Locations
    • 12.7 About Entity Manager
      • 12.7.1 Entity Repositories
    • 12.8 Adding Blog Home Page
    • 12.9 Adding New Post
      • 12.9.1 Adding PostForm
      • 12.9.2 Adding PostManager Service
      • 12.9.3 Creating Controller Action and View Template
    • 12.10 Editing Existing Post
      • 12.10.1 Modifying PostManager
      • 12.10.2 Adding Controller Action and View Template
    • 12.11 Deleting Post
      • 12.11.1 Modifying PostManager
      • 12.11.2 Adding Controller Action
    • 12.12 Implementing Post Preview
      • 12.12.1 Adding CommentForm
      • 12.12.2 Modifying PostManager
      • 12.12.3 Adding Controller Action and View Template
    • 12.13 Implementing Admin Page
    • 12.14 Implementing Tag Cloud
      • 12.14.1 Adding Custom Post Repository
      • 12.14.2 Calculating Tag Cloud
      • 12.14.3 Modifying Controller Action
      • 12.14.4 Rendering Tag Cloud
    • 12.15 Summary
  • Appendix A. Configuring Web Development Environment
    • Installing Apache, PHP and MySQL in Linux
      • Installing Apache and PHP
      • Checking Web Server Installation
      • Editing PHP Configuration
      • Restarting Apache Web Server
      • Enabling Apache’s mod_rewrite module
      • Creating Apache Virtual Host
      • Installing XDebug PHP extension
      • Installing APC PHP Extension
      • Installing MySQL Database Server
      • Configuring the MySQL Database Server
    • Installing Apache, PHP and MySQL in Windows
      • Checking Web Server Installation
      • Enabling Apache’s mod_rewrite module
      • Creating Apache Virtual Host
      • Installing XDebug PHP extension
      • Installing MySQL Database Server
      • Configuring the MySQL Database Server
    • Installing NetBeans IDE in Linux
      • Method 1. Installing from Repository
      • Method 2. Downloading from Web Site
    • Installing NetBeans IDE in Windows
    • Summary
  • Appendix B. Introduction to PHP Development in NetBeans IDE
    • Run Configuration
    • Running the Web Site
    • Site Debugging in NetBeans
    • Debug Toolbar
    • Breakpoints
    • Watching Variables
    • Call Stack
    • Debugging Options
    • Profiling
    • Summary
  • Appendix C. Introduction to Twitter Bootstrap
    • Overview of Bootstrap Files
    • Grid System
      • Defining the Grid
      • Offsetting Columns
      • Nesting Grids
      • “Mobile First” Concept
    • Bootstrap’s Interface Components
      • Navigation Bar
        • Dropdown Menu
        • Collapsible Navbar
        • Inverse Navbar Style
      • Breadcrumbs
      • Pagination
      • Buttons & Glyphicons
    • Customizing Bootstrap
    • Summary
  • Appendix D. Introduction to Doctrine
    • Doctrine and Database Management Systems
      • Relational Databases
        • SQL vs. DQL
      • NoSQL Databases
        • Document Databases
    • Doctrine Architecture
      • Components Supporting Relational Databases
      • Components Supporting NoSQL Document Databases
    • Summary
  • About the Author

Causes Supported

Electronic Frontier Foundation

Defending your civil liberties in a digital world.
https://www.eff.org/

Based in San Francisco, EFF is a donor-supported membership organization working to protect fundamental rights regardless of technology.

From the Internet to the iPod, technologies are transforming our society and empowering us as speakers, citizens, creators, and consumers. When our freedoms in the networked world come under attack, the Electronic Frontier Foundation (EFF) is the first line of defense. EFF broke new ground when it was founded in 1990—well before the Internet was on most people's radar—and continues to confront cutting-edge issues defending free speech, privacy, innovation, and consumer rights today. From the beginning, EFF has championed the public interest in every critical battle affecting digital rights.

Authors have earned$9,894,850writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.

Learn more about writing on Leanpub

The Leanpub 45-day 100% Happiness Guarantee

Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses! Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks. Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. It really is that easy.

Learn more about writing on Leanpub

Top Books

  1. #1

    C++ Best Practices

    Jason Turner

    Level up your C++, get the tools working for you, eliminate common problems, and move on to more exciting things!

  2. #2
  3. #3

    Functional Design and Architecture

    Alexander Granin

    Software Design in Functional Programming, Design Patterns and Practices, Methodologies and Application Architectures. How to build real software in Haskell with less efforts and low risks. The first complete source of knowledge.

  4. #4

    C++20

    Rainer Grimm

    C++20 is the next big C++ standard after C++11. As C++11 did it, C++20 changes the way we program modern C++. This change is, in particular, due to the big four of C++20: ranges, coroutines, concepts, and modules.

    The book is almost daily updated. These incremental updates ease my interaction with the proofreaders.

  5. #5

    Atomic Kotlin

    Bruce Eckel and Svetlana Isakova

    For both beginning and experienced programmers! From the author of the multi-award-winning Thinking in C++ and Thinking in Java together with a member of the Kotlin language team comes a book that breaks the concepts into small, easy-to-digest "atoms," along with exercises supported by hints and solutions directly inside IntelliJ IDEA!

  6. #6
  7. #7

    Java OOP Done Right

    Alan Mellor

    Object Oriented Programming is still a great way to create clean, maintainable code. But only if you use it right.

    This book gives you 25 years of OO best practice, ready to use.

    You'll learn to design objects behaviour-first, use TDD to help, then confidently apply Design Patterns, SOLID principles and Refactoring to make clean, crafted code.

  8. #8
  9. #9

    Ansible for DevOps

    Jeff Geerling

    Ansible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.

  10. #10

    Composing Software

    Eric Elliott

    All software design is composition: the act of breaking complex problems down into smaller problems and composing those solutions. Most developers have a limited understanding of compositional techniques. It's time for that to change.

Top Bundles

  1. #1

    Software Architecture for Developers: Volumes 1 & 2 - Technical leadership and communication

    2 Books

    "Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before...
  2. #2

    CCIE Service Provider Ultimate Study Bundle

    2 Books

    Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification...
  3. #3

    Cisco CCNA 200-301 Complet

    4 Books

    Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301.
  4. #4

    CCDE Practical Studies (All labs)

    3 Books

    CCDE lab
  5. #5

    Modern Management Made Easy

    3 Books

    Read all three Modern Management Made Easy books. Learn to manage yourself, lead and serve others, and lead the organization.
  6. #6

    The Future of Digital Health

    6 Books

    We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy and how technology giants such as Amazon or Google want to conquer...
  7. #7

    Django for Beginners/APIs/Professionals

    3 Books

  8. #8

    Linux Administration Complet

    4 Books

    Ce lot comprend les quatre volumes du Guide Linux Administration :Linux Administration, Volume 1, Administration fondamentale : Guide pratique de préparation aux examens de certification LPIC 1, Linux Essentials, RHCSA et LFCS. Administration fondamentale. Introduction à Linux. Le Shell. Traitement du texte. Arborescence de fichiers. Sécurité...
  9. #9

    Advanced Product Management

    3 Books

    Get The Art of Strategy, Product Discovery and Lean Product Management with a 20% discount.
  10. #10

    C++17 in Detail and Lambda Story

    2 Books

    Get all of my books much cheaper! With this package, you'll learn the exciting things available in C++17 and also understand lambda expressions.

Publish Early, Publish Often

  • Path
  • There are many paths, but the one you're on right now on Leanpub is:
  • › Using-zend-framework-2

Leanpub is copyright © 2010-2021 Ruboss Technology Corp. All rights reserved.