- Contact Class: Part 1 6:05
- Create a Contact Class 1 objective
- Contact Class: Part 2 4:04
- Write a Method 1 objective
- Phone Number Class 6:15
- Write a to_s Method 1 objective
- Address Class: Part 1 5:00
- Address Class: Part 2 3:44
- Initializing and Calling Methods 2 objectives
- Address Book Class 4:25
- Instance variable instantiation 2 objectives
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Contact Class: Part 2
4:04p2
Okay, so
we have our contact class here, and
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we've got this full name method
which returns the full name.
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We might want to refer to somebody
by their last name first, and
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then their first name.
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So let's go ahead and
create that method as well.
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We'll call that last_first.
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And we can do that same
thing that we did last time.
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And we can say last_name, or last_first,
starts with the last_name this time.
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And then normally we will add a comma,
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and then we'll add the first name.
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And now we can do the same check for
the middle name.
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We'll see if that's nil.
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And then, if it is not nil,
We will add a space,
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And then we'll take just the first
letter of the middle name.
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And we will add a dot at the end of that.
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And then finally we can return
the last name, first name.
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So I'm gonna save that, and
let's just make sure that works.
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So, we've got our two
contacts in this file.
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Now, let's just run it and
make sure it works okay.
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Okay, that is returning
exactly what we want to.
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So now that we've got two different
ways of displaying these methods,
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let's go ahead and override the
to_s method, so that we can call that.
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So here we go, we called to_s.
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And for right now, we'll say the format
by default is going to be full_name.
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Now we can use a case statement
to see what the format is.
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So, if the format is full_name,
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we can just return the full name
by calling the full name method.
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When it's last name, first name,
we can call the last, first method.
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And then we can do the same thing with
the first name, And the last name.
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And by default, let's just go ahead and
return first and
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last, which is not a method
we have written yet.
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So let's go ahead and write that.
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That does not include the middle names.
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So we can just say first_name,
plus space, plus last name.
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Now, we can call jason.to_s, And
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then we can call this with
either full name, Or last first.
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And we'll try it again on Nick.
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And we know that the others work so let's
just try calling first_last on this one.
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Click down into the console,
clear my screen here, and
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when we run that it appears
to be working correctly.
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Now we don't necessarily need this
to_s method right now, but
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this will come in handy
a little bit later,
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when we're writing the different
parts of our address book.
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