Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.
| # (concern) e.g. for Post model | |
| module UserTrackable | |
| extend ActiveSupport::Concern | |
| included do | |
| before_create :set_created_by | |
| before_save :set_updated_by | |
| belongs_to :created_by, class_name: 'User', foreign_key: 'created_by_id' |
If you're doing stuff with Ruby on a Mac, e.g. installling Jekyll or something, by default you'll end up having to use the sudo command to do stuff, since the permission to modify the default config is not available to your user account.
This sucks and should be avoided. Here's how to fix that.
To make this better, we are going install a new, custom Ruby. This used to be a big, scary thing, but thanks to the awesome tools Homebrew and rbenv, it's a snap.*
A word of warning: you will have to use Terminal to install this stuff. If you are uncomfortable with text, words, and doing stuff with your computer beyond pointing and hoping, this may not work well for you. But if that's the case, I'm not sure why you were trying to use Ruby in the first place.
heroku restartheroku pg:reset DATABASE (no need to change the DATABASE)heroku run rake db:migrateheroku run rake db:seed (if you have seed)One liner
heroku restart; heroku pg:reset DATABASE --confirm APP-NAME; heroku run rake db:migrate
Hopefully this will answer "How do I setup or start a Django project using REST Framework and ReactJS?"
This is a guide to show you step by step how this can be setup. If you just want to get started, use the cookiecuter I set up cookiecutter-django-reactjs. It basically is a fork of pydanny's cookiecutter, just added the front-end stuff :).
I created this because it was SUCH a pain in the ass setting up a project using all the latest technologies. After some research, I figured it out and have it working. The repo that implements this is located here. Feel free to use it as a boilerplate ;)
Main features:
| $(function() { | |
| $(document).on('scrollstart', function() { | |
| console.log('scroll started') | |
| }) | |
| $(document).on('scrollend', function() { | |
| console.log('scroll ended') | |
| }) |
| # source https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-16-04 | |
| # as of 23/4/2017 | |
| #part 1 | |
| # add build deps | |
| sudo apt-get update | |
| sudo apt-get -y install build-essential libssl-dev | |
| # grab v0.33.1 (most recent) |
| # Required Python Packages | |
| import pandas as pd | |
| from sklearn.model_selection import train_test_split | |
| from sklearn.ensemble import RandomForestClassifier | |
| from sklearn.metrics import accuracy_score | |
| from sklearn.metrics import confusion_matrix | |
| import pdb | |
| # File Paths |
| Development Phase: | |
| Step 1: Create Certificate .pem from Certificate .p12 | |
| Command: openssl pkcs12 -clcerts -nokeys -out apns-dev-cert.pem -in apns-dev-cert.p12 | |
| Step 2: Create Key .pem from Key .p12 | |
| Command : openssl pkcs12 -nocerts -out apns-dev-key.pem -in apns-dev-key.p12 | |
| Step 3: Optional (If you want to remove pass phrase asked in second step) | |
| Command : openssl rsa -in apns-dev-key.pem -out apns-dev-key-noenc.pem |
There are many different provisioning tools out there, the most popular of which are Chef and Puppet. Chef uses Ruby, Puppet uses a DSL (Domain Specific Language), there are others that use simple bash too, but today we're going to focus on Chef Solo.
To get Chef working properly on your local machine you need a few things.
Make sure you use Ruby 1.9.x and not Ruby 2.x as you will get errors with the json 1.6.1 gem on 2.x. Use rbenv or RVM to manage several different Rubies on the one machine.