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10 Frequently Asked Questions About Ruby on Rails

10 Frequently Asked Questions About Ruby on Rails

You’ll need to do well in the interview before you can get a job. If you’re interviewing for a job where you’ll be using Ruby on Rails, you’ll need to answer a number of questions that show the hiring manager your skills and qualifications.

This article will show you how to answer 10 of the most common Ruby on Rails interview questions.

Interviews for Ruby on Rails jobs often ask the same questions.

If you want a job where you’ll use the Ruby on Rails web-application framework, you should think about the kinds of questions they might ask you. Here are ten common questions and some examples of how to answer them:

  1. How do Ruby on Rails programs work?
  2. What do the subdirectories app/controllers and app/helpers do?
  3. How do you use a command to make a controller for the subject?
  4. Name five things you can do with Rails Migration.
  5. How do you use the Rails Controller?
  6. How do you stop Cross-Site Request Forgery in Rails?
  7. What does the garbage collection in Ruby on Rails do?
  8. Name three things that Ruby on Rails can’t do.
  9. What are some of the good things about Ruby on Rails?
  10. Name the four types of variables you can use with Ruby Class.

1.What does it mean to say Ruby on Rails?

The person in charge of hiring you might ask what Ruby on Rails is to make sure you know about the framework you’ll be using every day. When you answer, you should give more than a general answer so they know you know everything there is to know about the extension.

Example: “Ruby on Rails is a free framework that can be used to build web applications. It is built on the programming language Ruby and helps people make different kinds of apps.”

2. What do the subdirectories app/controllers and app/helpers do?

If the hiring manager asks you this, it’s because they want to know if you understand how the Rails directory structure works. When you answer, make sure you don’t mix up app/controllers and app/helpers.

“The app/controllers tell Rails where to look for controller classes and how to handle a web request from a user. The helper holds any classes that help the controller, model, and view classes.”

3.What command can you use to give the subject a controller?

When the interviewer asks this, they want to see how well you know the controller and how well you can figure out what each command does. Make sure your answer is clear and gets right to the point.

Example: “To set up a controller for subject, use the following command: C:rubylibs> ruby script/generate controller subject.”

4. Show what five things Rails Migration can do.

Hiring managers want to know that you understand how Rails Migration works. If you want to show that you know a lot about Rails Migration, it might help to know that there are more than five functions. If they ask again, keep coming up with more ways to use it.

Rails Migration can do a lot of things, like rename a table, add a column, change a column, remove a column, drop a table, and more.

5. What’s a Rails Controller?

When interviewers ask this, they want to know if you have a basic understanding of how Ruby on Rails works. Your Rails Controller definition is more detailed the better it is.

Example: “The Rails Controller is the most important part of your application because it connects the user, the views, and the models. It is also known for how well it handles URLs, helper modules, and sessions.”

6. In Rails, how can Cross-Site Request Forgery be stopped?

The point of this question is to see if you know how to keep hackers away. Make sure you tell them what to do when you answer this question.

Example: “You need to add “protect from forgery” to your ApplicationController to stop Cross-Site Request Forgery hacker attacks.”

7.What does the garbage collection in Ruby on Rails do?

As a programmer, you need to know how to use the garbage collection feature of Ruby on Rails. An interviewer might ask you this question to see if you know how to free up memory. Make sure you list more than one of Ruby on Rails’ garbage collection functions to show that you know a lot about it.

Example: “Garbage collection does a lot of different things, like letting pointer values be removed and getting rid of objects in memory that can’t be reached. Basically, garbage collection frees up memory so that it can be used by other processes.”

8. What are three things you can’t do with Ruby on Rails?

An interviewer might ask you this question to find out how well you know what Ruby on Rails can’t do. Even though Ruby on Rails has a lot of good points, when you answer this question, you should tell them about a lot of its bad points.

Example: “Ruby on Rails doesn’t support many features, which prevents some programmers from using it. This includes being able to connect to more than one database server at once and adding a foreign key to a database.”

9.What are some reasons to use Ruby on Rails?

In contrast to the last question, this one wants to know if you can still see the benefits of Ruby on Rails despite its flaws. Give them a few different things that will help them when you answer.

Example: “There are many good things about Ruby on Rails. It speeds up a programmer’s work, for one thing. It’s also open source and free. It also lets programmers write code that works on real code rather than just data.”

10.What are the four types of Ruby Class variables?

Interviewers might ask you this question to see how well you know Ruby on Rails. Even though this question is pretty easy, don’t forget what these different types of variables are called.

“There are four kinds of variables that can be used in Ruby Class: local variables, global variables, class variables, and instance variables.”

Tips for an interview

Here are some things to think about as you prepare for your next Ruby on Rails interview:


  • Get ready to answer questions at the interview. You might want to look over some common Ruby on Rails interview questions before your next interview. You can do this by having a friend or family member interview the person on your behalf. The more you practice your answers, the better you’ll be at the interview and the less nervous you’ll be.
  • Make memory joggers. You can also get ready by making flash cards with terms or features that are important to Ruby on Rails. This can help you remember some things about which you may be asked questions at the interview.
  • Think nice things. Even though not knowing what the hiring manager will ask can be scary, having a good attitude will help a lot. The more you think about good things, things that give you hope, and things that inspire you, the more confident you’ll feel when it’s time for your interview.

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