eNddy enddynayn

Initialize

gitflow	git
`git flow init`	`git init`
	`git commit --allow-empty -m "Initial commit"`
	`git checkout -b develop master`

Connect to the remote repository

I've developed a useful feature in KeystoneJS that lets you populate a relationship from either side, while only storing the data on one side, and am looking for feedback on whether it is something that could / should be brought back into mongoose itself. (It might be possible to add as a separate package but I suspect there'd be too much rewriting of mongoose internals for that to be a good idea).

I've added this as an issue in mongoose for consideration: #1888 but am leaving this gist in place because the examples are easier to read.

I've used Posts and Categories as a basic, contrived example to demonstrate what I'm talking about here; in reality you'd rarely load all the posts for a category but there are other real world cases where it's less unreasonable you'd want to do this, and Posts + Categories is an easy way to demo it.

The problem

The built-in population feature is really useful; not just for

	LOG_LEVEL=
	CASSANDRA_KEYSPACE=
	CASSANDRA_USER=
	CASSANDRA_PASSWORD=
	CASSANDRA_BOOTSTRAP=

	admin.addPeer("enode://8c5131f577ee602ccaad5e5f600011c024d43d33e6af6f8a89ed26cbfadd7efe903a8e426dde4071b857e0838a2efa29ae3b268f8b55acd59e72d4a919673cbc@13.251.47.174:30303");
	admin.addPeer("enode://798b8eba7b65cdd71bb061a6b18a1f7d16612d54e1aa542d8dc5c3573322b5dd7496c1eea100dbb84f8495d89f3d5ddb4142b0006a73cd32daa2f643bd5d1c76@175.24.29.183:30311");
	admin.addPeer("enode://9a4be35fec78cf91e7e959029ae3f5d3d3e86446186eb14f181c8f3b9917f57839ef98d4ba53cf06eb4fea696ecc14796b34d96db4f4294864edfcab27dd9956@31.220.51.107:30303");
	admin.addPeer("enode://2763ab6d19d6e7ce7a953ba95c9a87fe6ae5eac3434bf216282f53142d89cb5451faa701311d7de1d79cc8ecbd57f1781156e26f5722aee835547aeab870e385@52.237.88.221:30303");
	admin.addPeer("enode://81488a6c0b62aa14a1172d607893b6317e4f2565ca2bd73c7c0b8bfd55842af6b7972218728d1f352b3fddc61d0dccbf92e81d2bbfdc375db44ae44ee332d4db@88.198.59.75:30303");
	admin.addPeer("enode://3d55f613d74e90f5b8a4154d20d8a7260a973751c1402bf52adde2b08b72a9e0327a522bf187765f2d6e2a3b893dfe7aa41b204bce5f793bd9470f24fa3aafc

	module.exports = {
	promisify: function (web3) {
	// Pipes values from a Web3 callback.
	var callbackToResolve = function (resolve, reject) {
	return function (error, value) {
	if (error) {
	reject(error);
	} else {
	resolve(value);
	}

	require 'openssl'
	require 'base64'

	# ===== \/ sign =====
	# generate keys
	key = OpenSSL::PKey::EC.new("secp256k1")
	key.generate_key
	public_key = key.public_key
	public_key_hex = public_key.to_bn.to_s(16).downcase # public key in hex format

	h = {
	'a' => :a_value,
	'b' => nil,
	'c' => false
	}

	h.fetch('a', :default_value) #=> :a_value
	h.fetch('b', :default_value) #=> nil
	h.fetch('c', :default_value) #=> false
	h.fetch('d', :default_value) #=> :default_value