Jawad Khawaja jawkha

Everything I Know About UI Routing

Definitions

Location - The location of the application. Usually just a URL, but the location can contain multiple pieces of information that can be used by an app
1. pathname - The "file/directory" portion of the URL, like invoices/123
2. search - The stuff after ? in a URL like /assignments?showGrades=1.
3. query - A parsed version of search, usually an object but not a standard browser feature.
4. hash - The # portion of the URL. This is not available to servers in request.url so its client only. By default it means which part of the page the user should be scrolled to, but developers use it for various things.
5. state - Object associated with a location. Think of it like a hidden URL query. It's state you want to keep with a specific location, but you don't want it to be visible in the URL.

Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init

Setup One: Buy a Mac if you don't have one.

Setup Two: Install Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Setup Three:

npm list -g --depth=0

NOTE: This is a question I found on StackOverflow which I’ve archived here, because the answer is so effing phenomenal.

Q: How can I make a chain of function decorators in Python?

If you are not into long explanations, see [Paolo Bergantino’s answer][2].

	/jshint esversion: 6 /
	require('dotenv').config();
	var axios = require('axios');

	const getToken = () => {
	const sessionEndpoint = 'https://api.etilbudsavis.dk/v2/sessions';
	return new Promise(function (fullfill, reject) {
	axios.post(sessionEndpoint, {
	api_key: process.env.API_KEY,
	token_ttl: 256,

	When building an adnroid app, you might stumble upon this error:

	`Failed to finalize session : INSTALL_FAILED_UPDATE_INCOMPATIBLE...`. Here's how to fix it:

	That's because the app you're trying to test was already installed on the device and the signatures are different now, so it's complaining. The full error will look like something like this:

	`Failed to finalize session : INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.example signatures do not match the previously installed version; ignoring!`

	You can see that the package ID is `com.example`, well, simply run this command:

	#!/bin/bash

	# Disclaimer - make backups, use at your own risk.
	#
	# Based on this comment: http://stackoverflow.com/a/13944924/843067
	# Views and stored procedures have to be done separately.

	OLDDB="old_db_name"
	NEWDB="new_db_name"
	MYSQL="mysql -u root -pyour_password "