[PYTHON] Build a bulletin board app from scratch with Django. (Part 3)
Part 2 https://qiita.com/TuruMaru/items/8b55d1e134f29b8a8dcd
Just a little CSS
$mkdir static
$touch base.css
Create a static directory directly under the project and create a css file in it.
static means static, so it seems to store static files.
mysite/setting.py
STATIC_URL = '/static/'
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
Add this to your config file.
templates/base.html
{% load staticfiles %}← Add this
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
↓ Add this
<link rel="stylesheet" href="{% static 'base.css' %}">
<title>{% block page_title %}{% endblock %}</title>
</head>
Now you can use css. It's a little annoying.
Before creating the function to display the post, I will write the HTML and CSS of the base.
templates/base.html
{% load staticfiles %}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="{% static 'base.css' %}">
<title>{% block page_title %}{% endblock %}</title>
</head>
<body>
<nav>
<p class="site-name">Blog</p>
<ul>
<li><a href="{% url 'posts:index' %}">Top</a></li>
<li><a href="{% url 'posts:write' %}">Write</a></li>
</ul>
</nav>
<div class="title">
<h1>{% block title %}{% endblock %}</h1>
</div>
<hr>
<div class="content">
{% block content%}{% endblock %}
</div>
<hr>
</body>
</html>
static/base.css
html, body{
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
body, h1, hr {
margin: 0px;
}
a{
color: #e8e8e8;
}
nav p{
margin: 0px;
font-size: 30px;
}
nav{
padding: 10px 10px;
color: #e8e8e8;
background-color: #41a888;
}
nav .site-name{
display: inline-block;
}
nav ul{
margin: 0px;
padding: 0px;
float: right;
}
nav ul li{
padding: 10px;
display: inline-block;
}
.title{
margin: 21px 50px;
}
.content{
margin: 20px 50px;
}
Add a screen (write) to write posts to view.py and ʻurls.py`.
posts/views.py
class WriteView(View):
def get(self, request, *args, **kwargs):
return render(request, 'posts/write.html')
write = WriteView.as_view()
posts/urls.py
app_name = 'posts'
urlpatterns = [
path('', views.index, name='index'),
path('write/', views.write, name='write'),← Add this
]
Then it will look like this.
I was wondering which of the post list screen (post) and the post writing screen (write) should be done first, but I will do it from the post writing screen (write).
Post creation screen
Create an input form and save your input in the database.
flow
- Create form.py
- Create views.py
- Create html
First only the form
$cd posts
$touch form.py
posts/form.py
from django import forms
from .models import Posts
class WriteForm(forms.ModelForm):
class Meta:
#Specify model
model = Posts
#Specify the column you want to display as a form
fields = ('text',)
posts/views.py
from django.shortcuts import render
# Create your views here.
from django.views.generic import View
#form.Import form from py
from .form import WriteForm
class IndexView(View):
def get(self,request, *args, **kwargs):
return render(request, 'posts/post.html')
index = IndexView.as_view()
class WriteView(View):
def get(self, request, *args, **kwargs):
#Jump to html file with value
return render(request, 'posts/write.html', {'form': WriteForm})
write = WriteView.as_view()
templates/posts/write.html
{% extends "base.html" %}
{% block page_title %}Write{% endblock %}
{% block title %}Write{% endblock %}
{% block content %}
<form method="post" action="{% url 'posts:write' %}">
{% csrf_token %}
{{ form.as_p }}
<button type="submit" class="button">Post</button>
</form>
{% endblock %}
This is the screen you can do.
I don't write that much. I really have more to write HTML.
The code less here is form.py.
At first I didn't know why I had to create such a file, but it's obviously more efficient if I create a lot of forms. Also, it seems to be convenient when saving to the database.
Save to database
If nothing is done, an error will occur when the "Post" button is pressed.
So, let's write the process when the method is post, that is, the process to save in the database in views.py.
posts/views.py
class WriteView(View):
def get(self, request, *args, **kwargs):
return render(request, 'posts/write.html', {'form': WriteForm})
def post(self, request, *args, **kwargs):
#Store the contents written in the form
form = WriteForm(request.POST)
#Take out before saving
post = form.save(commit=False)
#Save
post.save()
#Go to view of index
return redirect(to='posts:index')
write = WriteView.as_view()
You can now save it to the database. Next, the saved posts will be displayed in the post list.
Post list screen
flow
- Create views.py
- Create html
views.py
class IndexView(View):
def get(self, request, *args, **kwargs):
#Get all the data in the Posts table
queryset = Posts.objects.all().order_by('-created_at')
#Post with price.Jump to html
return render(request, 'posts/post.html', {'posts': queryset})
index = IndexView.as_view()
By the way, data is acquired in descending order by prefixing '-created_at' and "-" with "-".
Quite important.
templates/posts/post.html
{% extends "base.html" %}
{% block page_title %}post{% endblock %}
{% block title %}Posts{% endblock %}
{% block content %}
{% for post in posts %}← Use the array of posts stored posts as post
<div class="post">
<p class="text">{{ post.text }}</p>
{{ post.created_at }}
<hr>
</div>
{% endfor %}
{% endblock %}
If you look at the list screen with this
Finally completed ~ (^ ○ ^) It's a very simple code, but I tried it all. There is still room for expansion, so please try expanding it.
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