What should we do to overcome Denial of service attack?

Hello. Can I ask for a little review of my code? I have been a php-developer for a long time. I really want to learn professional programming on rubi / ruby on rails. This is my [class](https://git...

I think I've been at this problem for too long and the obvious answer has evaded me. Say you have students, classes (klass for ruby's sake), and enrollements as the join between them. ```ruby cla...

Hi i've been coding with rails selflearning with videos books and so on, (prolly not the best way to do it) but i'm wondering if there are few best practices to follow up. For instance, when i do ...

1.when i created a devise model , i saw encrypted_password(column) in schema.rb but in registration form i saw f.input :password ??????? 2.I am getting { PG::NotNullViolation: ERROR: null value in...

Hey guys, I have an app for generating orders containg products. I'm currently using a “cart” through table that helps me connect both orders and products. I would like to have a list of product...

Hi, I have 4 models: ``` class Match < ApplicationRecord belongs_to :tournament scope :next, -> { where('date > ?', Time.zone.now) } end ``` ``` class Tournament < ApplicationRec...

When I start my application using Puma on port 3000 everything works as expected (no error). When I try to access the application after starting Apache, using the default port 80, I get the error "...

Hello, I'm a Rails newbie and I'm following a few tuts but I'm having trouble finding the application.html.erb file? I'm using Rails 5.2.2 and Ruby 2.6.0. Thank Rob

I have two questions. How do I contribute to a ruby gem? Do I just locate it's repo and make a pull request? Or are there more formal procedures? Also, what if I've made some very useful methods...

Hey, taking a full backup every day will be huge, so thinking of doing a full backup once in a month & incremental backups every day or so. I would like to know the best solution to achieve this.

Hi team, I've trying to model books, chapters, and notes. I have the following: ``` class Book < ApplicationRecord has_many :chapters has_many :notes end ``` ``` class Chapter < Applica...

Im trying to make a project to practice more kinds of associations would you kindly help me understand this? The basic idea is to have a betting game where one user generates a new bet that can on...

Scenerio: User uploads a huge file to S3 or Spaces. Question: How can I set up a job or worker to go into S3 or Spaces and resize that file at a later time, or even batch all of the days uploaded ...

Hi, I'm getting this wierd error. ``` NameError (undefined local variable or method `fetch_records' for #): app/controllers/admin_controller.rb:69:in `block (2 levels) in comments' app/controller...

I have this error: ```NoMethodError (undefined method `def_delegators' for ChatroomsDatatable:Class):```

I am using the following to submit my form when creating a product. ``` <%= button_tag("Create", type: "submit", form: 'new_product') %> ``` However, the issue I am facing is that when I tr...

How to resolve this issue: `ActionController::RoutingError (No route matches [GET] "/assets/images/4.jpg"):`

Im building a webapp that has an admin panel... I separated this by creating a new folder in the controllers 'admin' and also on my views... This way I can have two completely different styles, one...

Hey! I have two different workers ``` #app/workers/website_worker.rb class WebsiteWorker def perform(website) do_this_action(website) end def do_this_action(website) ... end ...