damien

Date and Time comparisons in ActiveSupport

Question: How do we safely compare a date to an unknown value within a Rails application? Example: params[:date_field] > 2.years.ago

Doing a bit of digging, it looks like 2.years.ago returns an instance of ActiveSupport::TimeWithZone. In ruby, whenever you do a comparison of any sort ruby will follow the rules outlined in the Comparable module of stdlib.

ActiveSupport::TimeWithZone will create a instance of Time in a UTC time zone when doing comparisons with ActiveSupport::TimeWithZone#<=>.

PavloBezpalov

INSTALL JAVA
$ sudo apt-get update && sudo apt-get install default-jre

INSTALL ELASTIC SEARCH https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-repositories.html
$ wget -qO - https://packages.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
$ echo "deb https://packages.elastic.co/elasticsearch/2.x/debian stable main" | sudo tee -a /etc/apt/sources.list.d/elasticsearch-2.x.list
$ sudo apt-get update && sudo apt-get install elasticsearch
$ sudo update-rc.d elasticsearch defaults 95 10
$ sudo service elasticsearch restart
$ sudo service elasticsearch status

jwalanta

Add the following line in /etc/dnsmasq.conf

dhcp-script=/etc/detect_new_device.sh

Setup sendmail to send email to your text number.

Reference:

• https://wiki.openwrt.org/doc/howto/smtp.client

wafiq

Rails 5 and 6 Deployment with Ubuntu, Mina, Puma and Nginx

Based on this tutorial but simplified and inlined. Particularly removed any Rails and 3rd party services part, assumed you just need deployment to any Ubuntu machine.

Prerequisite

1. A functional Rails app
2. Hosted Git repository (Github, Bitbucket, Gitlab)
3. Cloud hosting account (Digital Ocean, Vultr, Linode, Lightsail)
4. Local SSH account

danigb

How to create and setup a development virtual machine for old ruby/rails

Using VirtualBox and Vagrant

Install and create a virtual machine

Install virtualbox and Vagrant:

$ brew cask install virtualbox

denisoster

upstream site {
    server unix:/home/site/web/site.com.ua/site/shared/sockets/puma.sock fail_timeout=0;
}

server {
    listen 80;
    server_name site.com.ua www.site.com.ua;
    rewrite ^(.+)$ https://site.com.ua$uri permanent; 
}

haccks

Setting up postfix on MacOS High Sierra

MacOS Sierra High comes with preinstalled postfix. Follow these steps to configure it on a local system:

1. Create a sasl_passwd file

sudo nano /etc/postfix/sasl_passwd

• Add this to the file

epicserve

digitalocean_domain.example example.com
digitalocean_record.example example.com,<DO ID>
digitalocean_record.fd-gmail-txt example.com,<DO ID>
digitalocean_record.fd-mx["alt1.aspmx.l.google.com."] example.com,<DO ID>
digitalocean_record.fd-mx["alt2.aspmx.l.google.com."] example.com,<DO ID>
digitalocean_record.fd-mx["aspmx.l.google.com."] example.com,<DO ID>
digitalocean_record.fd-mx["aspmx2.googlemail.com."] example.com,<DO ID>
digitalocean_record.fd-mx["aspmx3.googlemail.com."] example.com,<DO ID>
digitalocean_record.fd-ns["1"] example.com,<DO ID>
digitalocean_record.fd-ns["2"] example.com,<DO ID>

tomty89

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define B 4

static unsigned char* ntb(unsigned char b[], unsigned int n) {
    b[0] = n >> 24;
    b[1] = n >> 16;
    b[2] = n >> 8;