Daniel dcalixto

Preface

Below are the steps I took to install ffmpeg, ffmpegthumbnailer, and heroku to use with carrierwave-video and carrierwave-video-thumbnailer gems on my heroku app. I found there was no documentation to do exactly this, so I hope this is helpful for other people (and will save them the countless hours it took me to finally get it to work)

carrierwave-video gem: https://github.com/rheaton/carrierwave-video
carrierwave-video-thumbnailer gem: https://github.com/evrone/carrierwave-video-thumbnailer

These are the libraries you will end up installing to get all of this to work.

x264

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

#Simple Authentication with Bcrypt

This tutorial is for adding authentication to a vanilla Ruby on Rails app using Bcrypt and has_secure_password.

The steps below are based on Ryan Bates's approach from Railscast #250 Authentication from Scratch (revised).

You can see the final source code here: repo. I began with a stock rails app using rails new gif_vault

##Steps

	## Sublime Text 3 Serial key build is 3103

	—– BEGIN LICENSE —–
	Michael Barnes
	Single User License
	EA7E-821385
	8A353C41 872A0D5C DF9B2950 AFF6F667
	C458EA6D 8EA3C286 98D1D650 131A97AB
	AA919AEC EF20E143 B361B1E7 4C8B7F04
	B085E65E 2F5F5360 8489D422 FB8FC1AA

	- Check rails version
	$ rails -v

	- To update rails
	$ gem update rails

	- Creating a new rails app using postgresql
	$ mkdir rails_projects
	$ cd rails_projects
	$ rails new myapp --database=postgresql

	Android Emulator usage: emulator [options] [-qemu args]
	options:
	-sysdir <dir> search for system disk images in <dir>
	-system <file> read initial system image from <file>
	-datadir <dir> write user data into <dir>
	-kernel <file> use specific emulated kernel
	-ramdisk <file> ramdisk image (default <system>/ramdisk.img
	-image <file> obsolete, use -system <file> instead
	-initdata <file> same as '-init-data <file>'
	-data <file> data image (default <datadir>/userdata-qemu.img

	# install openjdk
	sudo apt-get install openjdk-7-jdk

	# download android sdk
	wget http://dl.google.com/android/android-sdk_r24.2-linux.tgz

	tar -xvf android-sdk_r24.2-linux.tgz
	cd android-sdk-linux/tools

	# install all sdk packages

	# install java
	apt-get install -y software-properties-common
	apt-add-repository -y ppa:webupd8team/java
	apt-get update
	apt-get install -y oracle-java8-installer

	# download latest android sdk
	# http://developer.android.com/sdk/index.html#Other
	cd /opt
	wget http://dl.google.com/android/android-sdk_r24.4.1-linux.tgz

	## I imagine this could be done in the migration, but it was giving me problems so I moved it to the model
	## and just did it on the command line

	> Tag.reset_questions_count

	Name: Flash
	Serial: eNrzzU/OLi0odswsqnHLSSzOqDGoca7JKCkpsNLXLy8v1ytJTczVLUotKNFLzs8FAJHYETc=