1
00:00:00,270 --> 00:00:03,070
Okay, so
we have our contact class here, and

2
00:00:03,070 --> 00:00:05,780
we've got this full name method
which returns the full name.

3
00:00:07,030 --> 00:00:11,160
We might want to refer to somebody
by their last name first, and

4
00:00:11,160 --> 00:00:12,990
then their first name.

5
00:00:12,990 --> 00:00:16,870
So let's go ahead and
create that method as well.

6
00:00:19,377 --> 00:00:23,370
We'll call that last_first.

7
00:00:23,370 --> 00:00:25,080
And we can do that same
thing that we did last time.

8
00:00:25,080 --> 00:00:32,582
And we can say last_name, or last_first,
starts with the last_name this time.

9
00:00:32,582 --> 00:00:38,172
And then normally we will add a comma,

10
00:00:38,172 --> 00:00:43,420
and then we'll add the first name.

11
00:00:43,420 --> 00:00:46,492
And now we can do the same check for
the middle name.

12
00:00:50,846 --> 00:00:52,090
We'll see if that's nil.

13
00:00:54,230 --> 00:01:01,680
And then, if it is not nil,
We will add a space,

14
00:01:05,056 --> 00:01:08,530
And then we'll take just the first
letter of the middle name.

15
00:01:14,271 --> 00:01:17,640
And we will add a dot at the end of that.

16
00:01:19,240 --> 00:01:22,750
And then finally we can return
the last name, first name.

17
00:01:22,750 --> 00:01:27,140
So I'm gonna save that, and
let's just make sure that works.

18
00:01:36,188 --> 00:01:39,040
So, we've got our two
contacts in this file.

19
00:01:39,040 --> 00:01:40,780
Now, let's just run it and
make sure it works okay.

20
00:01:43,137 --> 00:01:46,400
Okay, that is returning
exactly what we want to.

21
00:01:48,640 --> 00:01:52,250
So now that we've got two different
ways of displaying these methods,

22
00:01:52,250 --> 00:01:58,190
let's go ahead and override the two
string method, so that we can call that.

23
00:02:02,570 --> 00:02:04,465
So here we go, we called to_s.

24
00:02:05,930 --> 00:02:13,250
And for right now, we'll say the format
by default is going to be full_name.

25
00:02:13,250 --> 00:02:16,380
Now we can use a case statement
to see what the format is.

26
00:02:20,147 --> 00:02:24,323
So, if the format is full_name,

27
00:02:24,323 --> 00:02:32,100
we can just return the full name
by calling the full name method.

28
00:02:33,570 --> 00:02:38,020
When it's last name, first name,
we can call the last, first method.

29
00:02:40,578 --> 00:02:47,840
And then we can do the same thing with
the first name, And the last name.

30
00:02:50,767 --> 00:02:55,406
And by default, let's just go ahead and
return first and

31
00:02:55,406 --> 00:02:59,380
last, which is not a method
we have written yet.

32
00:03:00,380 --> 00:03:01,843
So let's go ahead and write that.

33
00:03:04,730 --> 00:03:06,721
That does not include the middle names.

34
00:03:06,721 --> 00:03:13,058
So we can just say first_name,
plus space, plus last name.

35
00:03:17,421 --> 00:03:23,775
Now, we can call jason.to_s, And

36
00:03:23,775 --> 00:03:31,041
then we can call this with
either full name, Or last first.

37
00:03:34,198 --> 00:03:35,246
And we'll try it again on Nick.

38
00:03:39,191 --> 00:03:43,110
And we know that the others work so let's
just try calling first last on this one.

39
00:03:47,320 --> 00:03:51,770
Click down into the console,
clear my screen here, and

40
00:03:51,770 --> 00:03:54,320
when we run that it appears
to be working correctly.

41
00:03:55,620 --> 00:03:58,810
Now we don't necessarily need this
two string method right now, but

42
00:03:58,810 --> 00:04:01,330
this will come in handy
a little bit later,

43
00:04:01,330 --> 00:04:04,140
when we're writing the different
parts of our address book.