Rails is a web application development framework written in the Ruby language. It is designed to make programming web applications easier by making assumptions about what every developer needs to get started. It allows you to write less code while accomplishing more than many other languages and frameworks. Experienced Rails developers also report that it makes web application development more fun.
Rails is opinionated software. It makes the assumption that there is a “best” way to do things, and it’s designed to encourage that way – and in some cases to discourage alternatives. If you learn “The Rails Way” you’ll probably discover a tremendous increase in productivity. If you persist in bringing old habits from other languages to your Rails development, and trying to use patterns you learned elsewhere, you may have a less happy experience.
The Rails philosophy includes two major guiding principles:
- Don’t Repeat Yourself: DRY is a principle of software development which states that “Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.” By not writing the same information over and over again, our code is more maintainable, more extensible, and less buggy.
- Convention Over Configuration: Rails has opinions about the best way to do many things in a web application, and defaults to this set of conventions, rather than require that you specify minutiae through endless configuration files.
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1. Introduction to Rails
2. Model / View / Controller
3. Rails App Directory Structure
4. Creating a New Rails Project
5. Rendering Text in the Browser [Example] 6. New Application with a Scaffold [Example]
Your First Rail Project
7. The “people” Project – a Contact List: Creating a Controller and Index View [Example] 8. Creating Resources, a Controller and a View
9. Demo of Resource, Controller, and View Creation
10. Adding Embedded Ruby to the View
11. Creating and Migrating the Model
12. Showing the Added Record