Nguyễn Văn Đức "len" DucNguyenVan

First, add pry-rails to your Gemfile:
https://github.com/rweng/pry-rails

gem 'pry-rails', group: :development

Then you'll want to rebuild your Docker container to install the gems

Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
In addition, any object being replaced is also automatically saved, because its foreign key will change too
If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.

	#!/bin/bash

	# remove exited containers:
	docker ps --filter status=dead --filter status=exited -aq \| xargs -r docker rm -v

	# remove unused images:
	docker images --no-trunc \| grep '<none>' \| awk '{ print $3 }' \| xargs -r docker rmi

	# remove unused volumes:
	find '/var/lib/docker/volumes/' -mindepth 1 -maxdepth 1 -type d \| grep -vFf <(

	#!/usr/bin/env ruby

	# A sneaky wrapper around Rubocop that allows you to run it only against
	# the recent changes, as opposed to the whole project. It lets you
	# enforce the style guide for new/modified code only, as opposed to
	# having to restyle everything or adding cops incrementally. It relies
	# on git to figure out which files to check.
	#
	# Here are some options you can pass in addition to the ones in rubocop:
	#