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Gem Installation
3:14Once you know what gem you want to use, you need to install it. We'll do that using the gem command.
Once you know what gem you want to use,
you need to install it.
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We'll do that using the gem command.
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Let's take a look at how that
works now using Workspaces.
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So let's go ahead and install a gem.
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First, I'm going to search for
it on RubyGems.org.
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And, for this example,
I'm going to install the money gem.
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Now, in order to install it, we only need
to know the name of the gem, in this case,
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it's money.
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So, I've loaded up a workspace here and
I'm right in the console.
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In order to install a gem,
all we need to do is type the word gem.
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And then the word install and the name
of the gem, which in this case is money.
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Once we do that, Ruby and
RubyGems will go out,
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find the gem, download it,
and then install it.
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And we can see that two gems were
successfully installed, money and i18n.
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If we go back to the page on RubyGems.org,
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we can see that the runtime
dependencies specify i18n.
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And since that's specified, Ruby will
download and install that gem as well.
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Now, if for some reason,
you find a gem that isn't on RubyGems and
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want to install it that way,
you can also download the gem.
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On the right side,
there'll be a button to download it.
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So I've clicked the download button, and
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you can see that it appears at
the bottom of our web browser.
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So now I'm gonna clear my screen and,
if we press the File menu, and
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Upload File, then select
the file that we downloaded and
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press open, you'll see on the bottom
left it says it's uploading.
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And then it will appear on the left side
of the screen here in the file list.
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From there, we can type the same command,
gem, install,
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and the name of the gem, which will point
to this particular gem on the file system.
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Now, I started typing the name of
the gem and then pressed Tab so
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that the workspace would
complete the name for me.
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Then, press Enter.
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Now, you'll notice that this time
it said it successfully installed
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the version of the gem that
we had in the console.
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But, it did not install the I18N gem.
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The reason for
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that is that is was already installed
the last time we installed the gem.
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Now if I clear my screen here and
press gem, and
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list, it will show me all of
the gems that I have installed.
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Money, which we just installed,
and i18n, which came with money.
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The rest of the gems that you see are all
part of the default RubyGems installation.
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Try installing Gems on your
own now using Workspaces.
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