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返回到 Rails 的 Active Record 与 Action Pack

學生對 约翰霍普金斯大学 提供的 Rails 的 Active Record 与 Action Pack 的評價和反饋

768 個評分
163 條評論


You already know how to build a basic web application with the Ruby on Rails framework. Perhaps, you have even taken Course 1, "Ruby on Rails: An Introduction" (we highly recommend it) where you relied on external web services to be your “data layer”. But in the back of your mind, you always knew that there would come a time when you would need to roll up your sleeves and learn SQL to be able to interact with your own relational database (RDBMS). But there is an easier way to get started with SQL using the Active Record Object/Relational (ORM) framework. In this course, we will be able to use the Ruby language and the Active Record ORM framework to automate interactions with the database to quickly build the application we want. In Rails with Active Record and Action Pack, we will explore how to interact with relational databases by using Active Record, a Ruby gem, which Rails uses by default for database access. We will then take a look at what role Active Record plays in the overall request-response cycle, when a client (the browser) requests data from the server, as well as how to submit the data to the server. Of course, when accessing data, security is of paramount importance! We will talk about vulnerabilities such as SQL injection, as well as how to secure access to data by authenticating and authorizing users accessing the data. Take this course to build a Ruby on Rails application with Active Record to automate the detailed SQL interactions with our database....



A nice continuation to course 1 of this specialization, deeper dive into RoR, among other things you will learn how to manipulate/display database data and how to authenticate/authorize users!


Great explanation of not so easy to understand concepts. Lecturer provides good example that can help material better and see how what you've learned can be applied to real world scenarios.


26 - Rails 的 Active Record 与 Action Pack 的 50 個評論(共 156 個)

創建者 Moez B


Excellent course. Great lectures, great instructor, and fun assignments. Looking forward to the next course in the specialization.

創建者 Maxsuel F M


This course is awesome, even to who know a little about Ruby on Rails. There are much tips to help you develop a good application.

創建者 Irini K P


I learned a lot from the course.

The instructions of the last exercise could be less detailed, so as it would be more challenging

創建者 Chris B


Very well done. I was already familiar with the concepts taught in this course but I still learned some things which is nice.

創建者 Alexander T


I enjoyed it very much, well explained and guided. Inherits the test-driven grading system of the previous course. Excellent.

創建者 Matt W


Great gentle introduction to ActiveRecord, and by the end of the course you feel like you can create pretty much any webapp.

創建者 Sandor I


Nicely put together, the right amount of challenging assignments. Min point: For me the assignments are underestimated.

創建者 Boulate K


Well taught and very interactive. I recommend this to every one interested in understanding the core concepts of rails

創建者 Joseph M M


Awesome course that took us to database learning and how they interact with rails application. A lot of stuff learned.

創建者 Sarah W


Awesome! Learned a lot, and the instructor helped me promptly when I ran into an issue on the homework. Great class!

創建者 Deyvison d P P


I'm very happy with the course, that was awesome to learn a lot and increase my knowledge with Ruby on Rails

創建者 Nehal K


Really good course, please update the assignment version though. It becomes difficult to setup environment

創建者 Vivek G


As good as Course 1, grate learning experience ! Thank You professor for this excellent course...

創建者 Ameer H B


Beautiful course. Everything is explained much clear. Easy to understand and easy to learn too

創建者 Michael L


A good overview of action pack and active record. Thanks for your effort dear course creators.

創建者 Marie-Elise M


Excellent course with clear and thorough explanations of Rails concepts. Highly recommend!

創建者 Paolo P


very good course. It has helped me a lot to understand critical ruby on rails concepts.

創建者 Jean-Luc B


Another great MOOC. I really learned a lot and enjoyed this course.

thank you very much

創建者 Dan S R


Very intensive, a lot of work on assignments but at the end very happy to done this...

創建者 Ramón C D


Great course! A great help to put you on your feet with Ruby on Rails development!

創建者 Valdyn H


Excellent course, good combination of broad strokes and practical, specific tips.

創建者 yangyu s


Nice course. A good overview upon: routing, helper, controller, nested resources

創建者 Fred B L


Muito bom ! Very Good !

Learned the easy way of develop web applications.

Thanks !

創建者 徐剑敏


Do find something useful, even I am quite familiar with Rails. Good course!

創建者 edmundo p


This tuto is excellent , the notes, the examples and the professor explain