What is the difference between print i and print "#{i}" in Ruby?
I am a little confused between both of the below in codeacademy examples and want to understand well & know:What is the difference between both?Is there a time I should use one instead the...
View ArticleError during Docker build: bundle update net-pop command fails with exit code...
Body:I am trying to build my Docker container using the following command:docker build --no-cache -t cryptoall .But I am consistently getting this error:43.55 (net-protocol (>= 0)).43.55 Running...
View ArticleGem::LoadError: sqlite3 is not part of the bundle. Add it to your Gemfile
I saw a lot of questions similar to mine but I couldn't find an answer. My app works locally but not in Heroku.This is what I got when I try heroku run rake db:migrate. rake aborted!LoadError: Error...
View ArticleReturn only the first and last items of an array in Ruby
I need to create a method named first_and_last. It should use one argument, an Array, and return a new Array with only the first and last objects of the argument. Here is what I have so far, but the...
View ArticleRuby quirk: Using 'return' to get a nil value
I am doing a problem at Rubymonk where I have to test if an array is 'nil' before doing an operation (adding items inside a nested array but that is not really relevant to the question). I notice,...
View ArticleInject behavior when last element is used before referencing accumulator
I am a a bit confused by some of the behavior of the of the inject (alias reduce) command in RubyBackgroundFor any array, the second element (referenced after the accumulator) reflects the last element...
View ArticleThere is a programmatical way to detect Zeitwerk::NameError when upgrading to...
I am currently migrating an old Rails application to Rails 6.It seems that some files in the project are not consistent with the classes defined in it.I don't see this error when running the tests of...
View ArticleActiveRecord::ConnectionNotEstablished tries local PostgreSQL socket instead...
I have a Rails 8.0.1 application (Ruby 3.3.4) that I’m deploying to Heroku. The code pushes successfully, but whenever I run:heroku run rails db:migrateI get this...
View ArticleAuthorizing by the parent model in rails using possibly pundit
I a simple relationclass Rental < ApplicationRecord has_many :offers, dependent: :delete_allendandclass Offer < ApplicationRecord belongs_to :rentalendWithin the OffersController I'm performing a...
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Ruby: how to generate HTML from Markdown like GitHub's or BitBucket's?
On the main page of every repository in GitHub or BitBucket it shows the Readme.md in a very pretty format.Is there a way to make the same thing with ruby? I have already found some gems like...
View ArticleHow to parse EPUB files version 2 and 3 using Ruby and respond with JSON in a...
I'm looking for some gems to parse EPUB files and respond with the data in JSON format, such as title, table of contents, etc, in Ruby on Rails. Here are the gems I...
View ArticleHow to use headless Chrome with Capybara and Selenium
Chrome version: 59.0.3071.104I am using Cucumber, Capybara, Selenium to implement automation testing with Headless Chrome.features/support/env.rbrequire 'rubygems'require...
View ArticleSending POST request rails
I'm new in Ruby/Rails and I am trying to create simple API that will hold beer model (name and alcohol percent). I implemented API with rails gem rails-api but I have problem with sending POST request....
View ArticleRuby on Rails API for beginner JSON response
I am new to ruby on rails. I apologize early if this question might be dumb... but I can't figure this out and the tutorials I've seen is making this simple task confusing. Or I am just not...
View ArticleRails 5 Filter chain halted as :set_product rendered or redirected error when...
I'm running a Rails api-only app with a product model. I've created products on the backend with activeadmin. When using postman to view individual products with a corresponding product ID, it returns...
View ArticleNameError: uninitialized constant Api::V1::Item::ItemsController::Item
I have controller:class Api::V1::Item::ItemsController < ApplicationController def index @items = Item.all render json: @items endendand routes for this controller: namespace :api do namespace :v1...
View ArticleRails 8 ActiveAdmin: SCSS not loading, throws "active_admin.css file does not...
I’m using Rails 8 with ActiveAdmin and trying to integrate Tailwind CSS in the admin interface. I created a custom SCSS file (active_admin.scss) inside app/assets/stylesheets/ but I’m facing the...
View ArticleDefining and using variables in a Homebrew formula
I'm trying to write my first Homebrew formula. I would like the formula to download a specific binary from a specific url, based on OS, cpu architecture, and binary version, and then install it to the...
View ArticleRails: Is it possible to check if a named scope is valid for a given active...
I'm Using Ruby 1.8.7-p374 and Rails 2.3.18. (Yeah, I know, we're working on it.)I'm considering dynamically passing a named scope to be used as a condition for an ActiveRecord. Is it possible to check...
View ArticleHow to save Chrome's settings when using Watir?
Chrome is interrupting the flow and asking about whether I (the user) want to allow desktop notifications to be sent by the current site. I've tried changing this in the Advanced Settings page of...
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