Session 1 - Getting Started With Rails.pptx
- 1. Session 1: Getting Started With Rails IRIS, NITK
- 2. About the Bootcamp - IRIS is a team of motivated students working to digitize administrative, academic and alumni-related activities. - The Ruby on Rails Bootcamp is an opportunity for us to interact with the next generation and help them make NITK a better place. - We are students just like you, not professionals :)
- 3. My Philosophy - Programming is equal parts engineering and art. - Programming is (mostly) self-taught. - Learning small, specific concepts at a time is effective. - Feedback accelerates growth. Caution: I take myself too seriously ¯_(ツ)_/¯
- 4. Some Web Terms (Oversimplified) - A Webpage is a HTML document that can be viewed by browser. - A Website is a collection of webpages. - A Web Application processes client requests and responds with web pages. - A Web Framework solves common web development problems like data management, session management and building attractive UI.
- 5. What is MVC? Divides program logic into three interconnected elements: - Model: stores and processes data. - Controller: decides the flow of process. - View: presents data to user. Let’s take a closer look with examples.
- 6. Example: Exam Grades How to present data? (View) Student’s view: marks, grades of all my courses Faculty’s view: marks, grades of all students and a statistical breakdown of a particular course Academic Section’s view: grades of all students arranged by semester How to store and process data? (Model) - Spreadsheets - Databases - Cloud Storage How to decide which view to show? (Controller)
- 7. Example: IRIS Forms How to present data? (View) Form Creator’s view: show individual and summary of responses, ability to edit form. Form Filler' view: ability to fill, edit and delete form response. How to store and process data? (Model) - Spreadsheets - Databases - Cloud Storage How to decide which view to show? (Controller)
- 9. Why Bother with MVC? - Clean, maintainable code - Loose coupling of the components - Logical separation of concerns It’s alright if you don’t appreciate MVC right now - experience with building applications required :)
- 10. What is Ruby on Rails? - Ruby is a loosely-typed, interpreted language. - Ruby “optimizes” for programmer happiness with clean, elegant syntax. - Rails is a MVC web framework built on top of Ruby. - Models and Controllers are written in Ruby whereas Views are written in HTML, JS and other formats. That’s all of theory - let’s build a Website!
- 11. Building a “About Me” Website on Rails Prerequisites: - Install Ubuntu (on VM or dual boot) - Install Git - Install RVM, Ruby and Rails - Clone the RoR bootcamp repository