For this challenge I followed the requirements, and did a MVP on em. I also did it in the least code possible, which is one of my hallmarks. I can't golf a green to save my life, but I golf code like a champ.
I didn't bother to do any major validation as the example said I can expect all fields with all values. It really wouldn't matter the way I wrote this, it would just discard the things it can't process. Another hallmark of mine.
not counting def and end and the like....
14 lines of code!!!
This is of course after it was refactored down. Hope you enjoy!
2 files to note really
- app/models/concerns/import_from_disorganized_hash.rb
- lib/purchases_from_tab_file
These two places are were the real work happens. The code was reusable across all models. I use a variety of methods to make this all happen. I am a big fan of single purpose modules. I prefer composition to inheritence. I try to be itempotent when I can be, I stay away from state management whenever possible.
- I apologize for the lack of tests. I was getting guard errors and I wanted to focus on the task not debugging my xubuntu setup. I have a round of that planned this weekend :)
git clone git@github.com:dreamr/data-engineering.git
cd data-engineering/migration_app
bundle
rails sopen 0.0.0.0:3000 in a browser
select the example file (located in the root) Click upload
The data will be imported and mapped (w/relations) and then it will display the gross revenue.
How cool is that?