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Volver a Rails with Active Record and Action Pack

Opiniones y comentarios de aprendices correspondientes a Rails with Active Record and Action Pack por parte de Universidad Johns Hopkins

4.7
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739 calificaciones
155 revisiones

Acerca del Curso

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....

Principales revisiones

AB

Aug 11, 2016

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!

NL

Dec 17, 2015

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.

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126 - 148 de 148 revisiones para Rails with Active Record and Action Pack

por Ciré D

Jan 25, 2017

Very nice one. may be not the one for a beginner but help to gain some basics

por Laura R P

Sep 18, 2016

Good overview, though sometimes hard to follow if you're a complete newbie

por Assain

Aug 24, 2019

It's a nice course, learnt stuff about rails that I didn't earlier.

por Nikola Đ

Mar 04, 2016

Good course overall, wish more topics were covered but it's OK.

por Ronak Y P

Feb 28, 2016

Great Course, Great assignments and pace. Loved it.

por Raul C M

Nov 22, 2015

Great course to get you started into ruby on rails

por Piotr

Jan 07, 2017

Useful course for beginners to Rails world.

por Vinay J

Mar 23, 2017

Seems tough...though interesting !!

por Joaquin A

Nov 26, 2015

Digging deeper into Active Record.

por Haseeb A

Oct 25, 2016

Good

por Joseph C

Dec 27, 2016

The assignments took me much longer than the suggested 3 hours. Every task depends on having completed the previous task perfectly. My assignment in week 4 passed the end to end test perfectly on my local computer but failed the grader. I traced the problem back to a tiny typo that I made in week 2 assignment. (My heart sank when I saw I had to reuse my week 2 work in week 4 as I knew how much messing around I had done to get that one through the grader - I knew it would give problems)

As there were a couple of mistakes in the course (for example if you follow the steps in assignment 3 correctly then the final rspec would give failures - obviously this wasn't picked up by lecturers) it creates confusion and doubt as to whether you have made the mistake or the tutors.

The course content is good but the assignments need to be shorter and more forgiving of mistakes (i.e make the individual tasks independent of one another and pass if you get 80%). I am not sure if I will continue with the specialisation right now. It seems more suited to someone who is studying full time and not someone who is working who has limited spare time.

por Christiane H

Jul 26, 2016

Great course although I did struggle through the very last assignment. The first three were relatively ok, considering I'm new at this but they did take me longer than 3 hours to complete. The last one took about 3 days!

That being said, if the rspec tests weren't being run in dev mode, it might have been quicker. I had to move "ENV['RAILS_ENV'] ||= 'test'" from rails_helper.rb to spec_helper.rb to get stuff working.

Without my ruby on rails hubby, I'd have been lost!

por Xuliang S

Jul 24, 2018

Course staff does not respond to questions that I posted on the forum.

por Matías M

Jan 17, 2016

Good homework and good examples.

por Vitalij

Jul 16, 2017

It was difficult to follow, because of all the screenshots without live programming. I think it would be more easier to understand if the course wouldn't consist only of pics.

por Takayuki K

Sep 03, 2018

This course was tough.

The content of lectures are great but autograder of assignments is too bad. It was very stressful for me to use autograder till I can get used to it.

por Dmitri B

Jun 30, 2019

Really needs updating.

por Dan P

Mar 30, 2017

Totally unimpressed. Video lectures are terrible. Explanations are at best incomplete, usually confusing, sometimes incoherent. Instructor never gives an overview of the architecture/data flow/structure of Active Record or Action Pack, instead describes the syntax of a handful of functions. As a result you only get the most superficial understanding of the material. The graded assignments are just a regurgitation of the lectures and so don't require you to take a deeper dive into the material. In fact, in many cases the answers to the graded assignments are listed in the assignment immediately following the question.

por bhupesh

Dec 11, 2016

Content of the course is great! But if you get stuck in a problem no one responds or guides you. For practice purpose just take the free version, paid version is not worth taking, as you will not get any additional guidance or support to do assignments when stuck.

por Jigesh S

Jan 25, 2017

Could have been much better ....should have been a proper video tutorial

por James H

Oct 10, 2019

Poor maintenance of assignments make them a chore to set up.

por Eimantas U

Jun 16, 2017

Course needs updating

por Giannis F

Apr 02, 2016

bad instructor