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@anthonyray
anthonyray / kiosk.md
Created September 6, 2019 15:45
Turn your Raspberry Pi into a kiosk playing looping videos

An acquaintance needed a video kiosk that plays looping videos for an exposition booth. Since I have a bunch of Raspberry Pis lying around, I figured that it would be the perfect use case for using one of them.

Let's assume we start from scratch, with a unflashed, brand new SD card and your Raspberry Pi.

Installing the OS

Install a version of Raspbian that includes the desktop. You can head over to : https://www.raspberrypi.org/downloads/raspbian/ and follow the instructions.

Once the image is downloaded, you can burn it to your SD card with tools like Etcher (https://www.balena.io/etcher/)

@DavidKuennen
DavidKuennen / minimal-analytics-snippet.js
Last active June 9, 2024 19:08
Minimal Analytics Snippet
(function (context, trackingId, options) {
const history = context.history;
const doc = document;
const nav = navigator || {};
const storage = localStorage;
const encode = encodeURIComponent;
const pushState = history.pushState;
const typeException = 'exception';
const generateId = () => Math.random().toString(36);
const getId = () => {
# config/initializers/activestorage.rb
Rails.application.config.to_prepare do
# Provides the class-level DSL for declaring that an Active Record model has attached blobs.
ActiveStorage::Attached::Macros.module_eval do
def has_one_attached(name, dependent: :purge_later, acl: :private)
class_eval <<-CODE, __FILE__, __LINE__ + 1
def #{name}
@active_storage_attached_#{name} ||= ActiveStorage::Attached::One.new("#{name}", self, dependent: #{dependent == :purge_later ? ":purge_later" : "false"}, acl: "#{acl}")
end
@patio11
patio11 / annual-prepay.md
Last active February 23, 2024 11:16
Appointment Reminder Annual Pre-pay copy (2014)

Notes

This is the latest version of an email which I send periodically, offering customers the opportunity to pre-pay for SaaS in return for a discount. The benefits to the SaaS company are better cash flow and reduced churn rate. The benefits to the customer are, well, in the email. This genre of email has produced hundreds of thousands of dollars in pre-pays for some companies I work with, and it rarely requires any more work than this example.

I've put $79 is as a placeholder for the cost of the user's plan. We calculate that for each account, naturally, along with the billing contact's name.

Subject: Save $79 on Appointment Reminder (and get a tax write-off) Formatting: 100% plain text. Gmail automatically links up the central link. From: Patrick McKenzie (Appointment Reminder) patrick@appointmentreminder.org

@jsteiner
jsteiner / database_cleaner.rb
Created January 10, 2014 20:31
Database Cleaner
RSpec.configure do |config|
config.before(:suite) do
DatabaseCleaner.clean_with(:truncation)
end
config.before(:each) do
DatabaseCleaner.strategy = :transaction
end
config.before(:each, js: true) do
@stereoscott
stereoscott / active_admin.rb
Last active March 15, 2020 10:47
Stream CSV exports in ActiveAdmin in Rails 4
# if you want to monkey patch every controller, put this in initializers/active_admin.rb
ActiveAdmin::ResourceController.class_eval do
include ActiveAdmin::CSVStream
end
@nodesocket
nodesocket / bootstrap.flatten.css
Last active April 1, 2021 23:37
Below are simple styles to "flatten" bootstrap. I didn't go through every control and widget that bootstrap offers, only what was required for https://commando.io, so your milage may vary.
/* Flatten das boostrap */
.well, .navbar-inner, .popover, .btn, .tooltip, input, select, textarea, pre, .progress, .modal, .add-on, .alert, .table-bordered, .nav>.active>a, .dropdown-menu, .tooltip-inner, .badge, .label, .img-polaroid {
-moz-box-shadow: none !important;
-webkit-box-shadow: none !important;
box-shadow: none !important;
-webkit-border-radius: 0px !important;
-moz-border-radius: 0px !important;
border-radius: 0px !important;
border-collapse: collapse !important;
background-image: none !important;
ActiveAdmin::Dashboards.build do
# Add this section in your dashboard...
section "Background Jobs" do
now = Time.now.getgm
ul do
li do
jobs = Delayed::Job.where('failed_at is not null').count(:id)
link_to "#{jobs} failing jobs", admin_jobs_path(q: {failed_at_is_not_null: true}), style: 'color: red'
end
@tlowrimore
tlowrimore / union_scope.rb
Last active January 13, 2023 21:12
Unions multiple scopes on a model, and returns an instance of ActiveRecord::Relation.
module ActiveRecord::UnionScope
def self.included(base)
base.send :extend, ClassMethods
end
module ClassMethods
def union_scope(*scopes)
id_column = "#{table_name}.#{primary_key}"
sub_query = scopes.map { |s| s.select(id_column).to_sql }.join(" UNION ")
where "#{id_column} IN (#{sub_query})"
@malarkey
malarkey / Contract Killer 3.md
Last active May 24, 2024 23:38
The latest version of my ‘killer contract’ for web designers and developers

When times get tough and people get nasty, you’ll need more than a killer smile. You’ll need a killer contract.

Used by 1000s of designers and developers Clarify what’s expected on both sides Helps build great relationships between you and your clients Plain and simple, no legal jargon Customisable to suit your business Used on countless web projects since 2008

…………………………