1
00:00:00,680 --> 00:00:03,820
As you can probably guess, there won't be
a lot to our stream form.

2
00:00:03,820 --> 00:00:07,200
But we need to create a view and we should
probably make the form available all

3
00:00:07,200 --> 00:00:12,065
the time so we can let the user post a new
message no matter where they are.

4
00:00:12,065 --> 00:00:14,370
Okay, so if we're going to make a form for

5
00:00:14,370 --> 00:00:19,170
them to post things from, then we to go
back to forms.py.

6
00:00:19,170 --> 00:00:21,910
So our forms are getting easier and
easier.

7
00:00:21,910 --> 00:00:24,260
Our log in form was two fields.

8
00:00:24,260 --> 00:00:26,780
And this form is only going to be one.

9
00:00:26,780 --> 00:00:30,330
So let's make a PostForm which is a Form.

10
00:00:30,330 --> 00:00:31,540
And it's just going to have content.

11
00:00:31,540 --> 00:00:35,080
And that's going to be a TextAreaField.

12
00:00:35,080 --> 00:00:38,770
And we're gonna put in a message, I'm
gonna say what's up.

13
00:00:38,770 --> 00:00:40,040
You can, of course, put in whatever you
want.

14
00:00:41,280 --> 00:00:48,470
And, our only validator on this is going
to be DataRequired, and that's it.

15
00:00:50,120 --> 00:00:53,605
So let me come up here and import the
TextAreaField.

16
00:00:53,605 --> 00:01:00,197
[NOISE] And, we want to save.

17
00:01:00,197 --> 00:01:02,190
And there's our new Form.

18
00:01:02,190 --> 00:01:03,710
So that's great.

19
00:01:03,710 --> 00:01:06,130
So now we need to go use that form.

20
00:01:06,130 --> 00:01:11,675
So let's go back over here to app.py, and
let's make a new route.

21
00:01:11,675 --> 00:01:16,114
[BLANK_AUDIO]

22
00:01:16,114 --> 00:01:18,861
And let's say a new_post.

23
00:01:18,861 --> 00:01:21,652
[BLANK_AUDIO]

24
00:01:21,652 --> 00:01:23,470
And what we could do.

25
00:01:23,470 --> 00:01:24,723
Let's think about this for just a moment.

26
00:01:24,723 --> 00:01:27,560
What we could do is we could make it to
where we have one route

27
00:01:27,560 --> 00:01:31,820
that always gets posted to, that will
create the new post, and

28
00:01:31,820 --> 00:01:34,330
then send you back to, like, your stream
page, or whatever.

29
00:01:34,330 --> 00:01:38,110
That would make it to where if we wanted
to show the form on every single page,

30
00:01:38,110 --> 00:01:39,690
then that's a really easy way.

31
00:01:39,690 --> 00:01:42,900
We can post to that and it just gets
redirected.

32
00:01:42,900 --> 00:01:47,200
I think showing the form on every single
page might get a little visually messy and

33
00:01:47,200 --> 00:01:52,280
we have to create and pass this post form
every single time.

34
00:01:52,280 --> 00:01:56,010
That doesn't seem like the most fun thing
to do, so

35
00:01:56,010 --> 00:01:58,620
let's instead just use this route.

36
00:01:58,620 --> 00:02:01,550
And we'll have a view where they can just
go to post.

37
00:02:01,550 --> 00:02:05,790
And then, if you wanted to in your own
version of this, you could load that view

38
00:02:05,790 --> 00:02:10,560
through Ajax, and hit a button, you pull
up a model that shows that view or

39
00:02:10,560 --> 00:02:13,120
whatever, they type in their post and then
it does whatever it does.

40
00:02:13,120 --> 00:02:15,870
All right, so, let's call this post.

41
00:02:17,270 --> 00:02:17,850
And you know what?

42
00:02:17,850 --> 00:02:20,506
I just realized we need to make this log
in required,

43
00:02:20,506 --> 00:02:23,820
cuz we don't want non-logged in users to
be posting.

44
00:02:25,230 --> 00:02:29,920
So, form equals forms.PostForm,

45
00:02:29,920 --> 00:02:34,942
and if form.validate_on_submit.

46
00:02:34,942 --> 00:02:36,030
So you notice when we're working with
forms,

47
00:02:36,030 --> 00:02:38,230
we're basically doing the same thing every
time.

48
00:02:38,230 --> 00:02:40,820
We build the form, and we're gonna send it
to our template.

49
00:02:40,820 --> 00:02:44,300
But, if the form comes in, and it's been
submitted, then we're gonna validate it,

50
00:02:44,300 --> 00:02:46,570
and see if it works, and then, do
whatever.

51
00:02:48,330 --> 00:02:50,170
So, models.Post.create.

52
00:02:51,620 --> 00:02:54,740
And user is going to be g.user.

53
00:02:54,740 --> 00:02:55,980
And then, this is a fun thing.

54
00:02:55,980 --> 00:02:57,499
It actually took me a little while to find
this.

55
00:02:58,510 --> 00:03:01,640
So g.user is just this kinda lazy object.

56
00:03:01,640 --> 00:03:03,560
We have to actually go and get the object.

57
00:03:03,560 --> 00:03:08,820
So we have to run this method of
_get_current_object().

58
00:03:08,820 --> 00:03:11,270
It's a little weird, so I made sure
[LAUGH] and

59
00:03:11,270 --> 00:03:13,120
found out how to do this for us.

60
00:03:13,120 --> 00:03:13,950
So that's a little strange,

61
00:03:13,950 --> 00:03:18,060
but that's what we do, g.user, that's our
global user.

62
00:03:18,060 --> 00:03:19,180
We need to add that in.

63
00:03:19,180 --> 00:03:20,830
Let's add that in in just a moment.

64
00:03:20,830 --> 00:03:23,930
And then we have to go and get that
current object each time.

65
00:03:23,930 --> 00:03:27,000
And then content equals form.content.data.

66
00:03:27,000 --> 00:03:29,130
And let's call strip on that,

67
00:03:29,130 --> 00:03:31,373
just in case they put in a bunch of white
space or whatever.

68
00:03:32,820 --> 00:03:38,510
So we're gonna flash Message posted:
Thanks!

69
00:03:38,510 --> 00:03:40,490
And that's going to be a success.

70
00:03:42,320 --> 00:03:49,100
And we're gonna return a redirect url_for
index.

71
00:03:51,580 --> 00:04:00,182
And then out here we're gonna return a
render_template('post.html', form=form).

72
00:04:00,182 --> 00:04:03,740
Okay, so I said we were gonna do this
g.user.

73
00:04:03,740 --> 00:04:08,520
So let's come up here to our
before_request.

74
00:04:08,520 --> 00:04:10,530
And that's where we want to add that in.

75
00:04:11,570 --> 00:04:15,840
So what we want to do is actually I need
to add two things.

76
00:04:15,840 --> 00:04:19,190
So we're going to say g.user =
current_user.

77
00:04:20,420 --> 00:04:25,350
And then we're going to come up here to
our login imports and

78
00:04:25,350 --> 00:04:28,130
we're going to import current_user.

79
00:04:28,130 --> 00:04:31,500
So this is just a little method or

80
00:04:31,500 --> 00:04:35,440
object that we can use that will find the
current_user.

81
00:04:35,440 --> 00:04:36,460
So pretty handy.

82
00:04:36,460 --> 00:04:39,510
Let's just go ahead and look at our post
form again.

83
00:04:39,510 --> 00:04:43,360
So that's that, nothing really
exceptional.

84
00:04:43,360 --> 00:04:46,930
So anyway, we're rendering out this
post.html, we should go build that.

85
00:04:47,940 --> 00:04:51,741
So, we'll say new file, post.html.

86
00:04:51,741 --> 00:04:59,407
And let's say that this is going to extend
layout.html and

87
00:04:59,407 --> 00:05:04,160
we're gonna bring in that macro from

88
00:05:04,160 --> 00:05:09,240
'macros.html' import render_field.

89
00:05:09,240 --> 00:05:14,613
And in block content, we want to

90
00:05:14,613 --> 00:05:21,777
do form method = POST action = this page,

91
00:05:21,777 --> 00:05:25,758
form.hidden_tag for

92
00:05:25,758 --> 00:05:31,935
field in form render_field(field).

93
00:05:31,935 --> 00:05:37,416
[SOUND] And then button

94
00:05:37,416 --> 00:05:45,949
type = submit id = submit Post.

95
00:05:45,949 --> 00:05:48,580
And then that ends our form and we end our
block.

96
00:05:50,965 --> 00:05:55,930
'Kay, so, if we were to go over here to
TwoCans, and

97
00:05:55,930 --> 00:05:58,420
we were to go to new post, then there's
our form.

98
00:05:58,420 --> 00:06:00,860
So, let's add in a way that we can get to
here from where ever.

99
00:06:00,860 --> 00:06:05,092
So, we can get to the home page a couple
of ways, we can log out, but

100
00:06:05,092 --> 00:06:08,100
we don't have any way to get to this post
page.

101
00:06:08,100 --> 00:06:09,600
So let's go add that.

102
00:06:09,600 --> 00:06:15,590
Let's go over here to our layout.html.

103
00:06:15,590 --> 00:06:22,760
And here where we have this All link,
let's add in a new thing,

104
00:06:22,760 --> 00:06:29,650
if current_user.is_authenticated, cuz we
only wanna show this if they're logged in.

105
00:06:31,400 --> 00:06:33,990
There's no reason to show them a link they
can't use, right?

106
00:06:35,130 --> 00:06:38,710
The URL for post, that's the name of our
view.

107
00:06:39,940 --> 00:06:42,060
And class = new.

108
00:06:42,060 --> 00:06:46,170
And let's say Create New Post.

109
00:06:46,170 --> 00:06:50,300
All right, now let's refresh this.

110
00:06:53,520 --> 00:06:55,370
Sweet, we've got this Create New Post
thing.

111
00:06:55,370 --> 00:06:58,670
And it's highlighted here because of some
JavaScript that's running.

112
00:06:58,670 --> 00:07:01,280
Since this course is about Flask, we're
not gonna talk about the JavaScript,

113
00:07:01,280 --> 00:07:03,610
but feel free to check it out inside the
Static folder.

114
00:07:05,260 --> 00:07:08,450
That G object is becoming more useful than
I'd expect.

115
00:07:08,450 --> 00:07:11,640
Now that we can post messages, let's show
them on the index page and

116
00:07:11,640 --> 00:07:14,047
show just your messages on your personal
Stream View.