I have an external API that I am parsing and saving to the database via a scheduled job and I am having trouble working out how to:A: How to only save the parsed object if it has changed.B. How to ...

Chris i followed your series on implementing commenting systeming using polymorphic is true. Now that i got that implemented. i want to know how do i make this work with will paginate for example.....

I am getting an error **undefined mixin display** while executing solidus multi_domain in my ruby application. Please can anyon help me out..

I've been playing around and trying to implement a chat such as slack as shown on Chris's screencast. On Chatroom index I'm able to Show, Edit, Join, and Leave. However, when I clicked on Show e...

Hi all, I'm new to this community and also new to Ruby on Rails. I recently watched the Braintree integration screencast by Chris and I've been playing around with its Sand box integration. I wa...

I have trouble solving the following excercise, i was wondering if there is any way in ruby where i can get which method called which i think caller but i havent figured out yet ``` require_relat...

I'm currently building an app and using namespaced service objects containing a single call method in each class. Below is an actual method (I'm aware the ABC size is too large, I'm wanting to get...

I've recently watched couple of screencasts on using Null Object Pattern: https://www.rubytapas.com/2017/01/31/two-screencasts-two-ways-eradicate-ruby-nil-values It was a good reminder about a ques...

A user belogns to a ProjectThread. And a ProjectThread has_many Users through ProjectPosts. On the Project Thread Index I want to display only threads where a given users has posted a Project Pos...

I have an array that has nested hashes of months, years and amounts that I want to diplay in a table. My data is in this format: [{:month=>"January", :years=>{2017=>20, 2018=>100, 201...

I'm using rbenv with ruby-build plugin as a default way to install ruby for development and production environments. Is there a way to make installation process faster, but keep it stable? For exa...

Setting up my new MacBook Pro and am running into an issue with ruby versions. At this point I have installed and am usin rbenv. I installed ruby 2.3.1 and when I `ruby -v` that is what it shows. ...

My question is about this Episode: https://gorails.com/episodes/upload-csv-form The CSV Import works fine (I'm using the exact same code actually). My 1. Question - How can I define an alias for ...

Hello Chris - can you please teach us how to build a web scraper using Ruby to collect data from the web?

I'm having total brainfog right now with rbenv, so please excuse the newbie question. I have rbenv installed and my global ruby install is `1.9.3-p194` which I've developed multiple apps in. I'm ...

I'm having a difficult time understanding the postgres section. I've setup a postgres user but when I type "ruby -v" with that user I get 1.9.3, whereas with the deploy user I get 2.1.3 (the correc...