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In this video, you'll learn how to install a Ruby on Rails Development Environment in OS X.
Note: A more current version of this workshop is available here.
Install XCode
XCode can be installed from the App Store. The rest of these commands take place in a Terminal.
Install XCode
Command line tools come with it. Show app store.
Install Homebrew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew update
brew doctor
Install rbenv from Homebrew
brew install rbenv ruby-build
echo "gem: --no-document" > ~/.gemrc
Install a ruby
rbenv install 2.2.1
rbenv global 2.2.1
rbenv rehash
Install a database
brew install mysql
Install other dependencies
brew install wget curl imagemagick
Install sublimetext
Download from the Sublime Text website.
ln -s "/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl" /usr/local/bin/sublime
Install bundler and rails
In a terminal:
gem install bundler
rbenv rehash
gem install rails
Configure git
git config --global user.name "Jason Seifer"
git config --global user.email jason@teamtreehouse.com
Create a new app
mkdir projects
cd projects
rails new testapp
cd testapp
subl -n .
bin/rails server
Create a quick scaffold
bin/rails generate scaffold name title:string first:string last:string
bin/rake db:migrate
bin/rails s
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Hi, I'm Jason, the Ruby teacher here at
Tree House.
0:00
In this workshop,
0:03
we're going to be setting up a Ruby on
Rails development environment in OS X.
0:04
Now in order to do that, we're going to
need to install
0:09
the Ruby programming languages, as well as
a few other dependencies.
0:12
OS X already comes with a version of Ruby
installed.
0:16
However, it's usually a little bit out of
date.
0:19
So instead, what we're gonna do is install
Ruby via Homebrew,
0:22
using Ruby Build and rbenv.
0:27
Next we'll set up some databases,
configure GIT, install a text editor, and
0:30
finally, generate a quick Ruby on Rails
application,
0:35
to make sure everything is working.
0:38
So let's go ahead and get started.
0:40
So they first thing that we need to do,
0:42
in order to install a Rails Development
Environment, is install Xcode.
0:43
So make sure that that is installed from
the App Store.
0:48
Right here, I'm using a fresh install of
OS X Yosemite, and
0:52
all that I've done is install Xcode from
the App Store.
0:58
Not gonna make you watch all that,
1:01
because it takes a very long time to
download and install.
1:04
So once Xcode is installed, what we need
to do is launch a terminal, and
1:08
this is where most of our work is going to
be done, the rest of this.
1:13
So, in order to get to terminal, over on
the bottom here,
1:18
in Finder, head on over to the
Applications folder.
1:23
And then scroll all the way down, and go
into Utilities and
1:28
double-click on Terminal.
1:32
Then I'm gonna close the App Store right
now, and also Finder.
1:36
So I'm going to make this a little bit
bigger so that we can see it.
1:43
Okay.
1:49
So here's our Terminal window, and now we
can start typing in our commands.
1:51
So the first thing that we need to do is
install the command line tools for Xcode.
1:57
And that is going to let us build and
compile Ruby.
2:02
So we do that by typing xcode=select then
a space and
2:06
two dashes and the word install.
2:11
And now just click Install, and then read
this fully and agree.
2:15
Then Xcode will go through, and find and
download the command line tools.
2:21
Feel free to go get a hot or cold beverage
while this happens.
2:27
Okay so once that finishes, click on Done.
2:32
And now there is one more command that we
have to type in which is sudo
2:35
xcodebuild, and then a space, and license.
2:43
And this will agree to the terms and
conditions of the Xcode license.
2:48
Please make sure that you read them fully
before agreeing to it.
2:52
And then go ahead and type in your
password.
2:56
Hit Enter.
And then you'll have to read all of this.
3:00
I read very quickly, so this is, this is
going, going very well for me.
3:03
Now then just type agree, and boom,
3:07
you have now installed and agreed to
Xcode's terms and conditions.
3:11
So I'm gonna clear my screen here.
3:15
And now we're gonna install something
called Homebrew,
3:18
which is described as the missing package
manager for OS X.
3:21
Homebrew will let us install different
command line software very easily,
3:26
and we're going to use that to install
Ruby.
3:31
So double-click this line and copy it,
then head back over to your Terminal.
3:33
And this part I'm just.make it full screen
here so
3:41
we can see it a little bit better, and I'm
gonna paste that.
3:43
And this tells me what it's going to
install.
3:48
Now Homebrew will install and do its
thing.
3:54
Okay, it says the installation is
successful, so
3:58
I'm gonna clear my screen again.
4:01
Now let's just make sure Homebrew is up to
date, we type in brew update.
4:03
Okay, that's up to date.
4:08
Next type in, brew doctor, and that will
just check and
4:11
make sure everything installed okay.
4:14
All right, our system is ready to brew.
4:17
So now we can install Ruby.
4:22
We're going to install a project called
rbenv,
4:25
which will manage our different Rubies for
us.
4:27
And the other thing we're going to install
is a project called ruby-build.
4:33
And this will download and install.
4:40
Okay, now we're almost done here,
4:46
rbenv needs us to add something to a
certain file,
4:48
that launches when our Terminal launches,
so what we need to do is,
4:53
take this line right here, and copy it.
4:58
And then type the word echo, a single
quote,
5:05
paste, another single quote, a space, a
greater than sign,
5:12
another space, a tilde, a slash, and the
word, .profile.
5:18
And .profile is a file that gets executed
by our Terminal
5:25
every time we open a Terminal.
5:30
And what this does is initializes rbenv.
5:33
There's one more thing that we want to do,
which is type echo
5:36
gem: --no-document,
5:41
to a .gemrc file, also in our home
directory.
5:48
So once we do that, we've set up rbenv's
environment,
5:55
and we can either reload, or just type
exit.
5:58
That'll be a little bit easier for us.
6:02
And now we can just load a new Terminal.
6:06
So I've launched a new Terminal.
6:13
I'm gonna make this full screen again
here.
6:14
And now if I type in rbenv -v it shows
I've got
6:17
Version 0.4.0 of rbenv installed.
6:22
Now I can go ahead and install a Ruby.
6:26
So, let's go ahead and install Ruby
version 2.2.1.
6:29
[BLANK_AUDIO]
6:33
This will download, compile, and install
Ruby 2.2.1 for us.
6:37
This may take a few minutes, so
6:44
feel free to go do something else while
this installs and compiles.
6:45
Now once the Ruby version finishes
downloading, installing, and
6:51
compiling, we need to tell rbenv to use
it.
6:56
And the way we do that is by saying, rbenv
global 2.2.1,
6:59
which is the version we just installed,
and
7:04
then type rbenv rehash, and
7:08
rbenv rehash is going to just set that as
the global version of Ruby.
7:12
Now if we type ruby -v, we see we've got
Ruby version 2.2.1 installed.
7:19
Okay, now before we install Rails, we're
going to install a few other things.
7:26
And these are just, kind of, good command
line programs to have,
7:31
we're going to install Wget, Curl, and
imageMagick.
7:34
These aren't strictly necessary for a
Rails installation, but
7:39
they are great to have.
7:44
And so Homebrew will download and install
these for
7:45
us, and boom, those are all installed.
7:49
And then finally, we can go through, and
7:53
install the couple other things that we
need for a Rails installation.
7:57
We need to install a Ruby gem called
Bundler, and
8:02
we also need to install Rails.
8:10
Okay, so once Bundler and the Rails gems
finish installing,
8:15
we have to type in one more thing which
is, rbenv rehash.
8:20
And that will tell rbenv to use the
binaries of Bundler and
8:25
Rails, that we just installed.
8:31
So now I'm going to kick this back out off
full screen here, and
8:33
what we're going to do is grab a text
editor called, Sublime Text.
8:40
And this is just, a preference, you don't
need to install
8:49
Sublime Text if you already have a text
editor that you work with, but
8:53
text editors are really good for editing
codes, specifically Rails code.
8:57
Now double-click on Sublime Text to open
it.
9:03
And then you can just grab that, and put
that in your Applications folder.
9:06
And then, if we go over to the
Applications folder,
9:17
we should have Sublime Text installed.
9:20
And just click Open.
9:24
OK.
9:26
Sublime Text is now installed.
9:27
I'm going to close it, and go back to my
Terminal.
9:29
And here's a neat little command that we
can use.
9:32
And you can copy and paste this from the
notes right below the video.
9:38
But what this does right here is, creates
a symbolic link
9:42
called sublime, which will let us open
folders and
9:48
files inside of Sublime Text, right from
the command line.
9:52
So once that's installed, now we can
finally create a Rails application.
9:56
So I'm going to go into my Documents
folder, and type,
10:02
rails new testapp, and that will generate
a new Rails application.
10:06
So once that's done, I'm gonna clear my
screen again here, type cd testapp/, and
10:15
then type, bin/rake db:create: all, that
will create all of the databases for us.
10:21
And type, bin/rails server, and with any
luck, we should see this message
10:28
saying that a new Rails application is
started in the development mode.
10:35
And now we can copy that, and go to our
web browser and paste it,
10:40
and we should see,welcome aboard, we are
riding Ruby on Rails.
10:48
Great work, we now have installed and set
up a Rails development environment.
10:54
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