第1章 新建工程和創建app
新建工程和創建app就不用貼出來了，我這裏是測試圖片上傳的功能能否實現，所以項目都是新的，正常在以有的app下就可以
第2章 模型層：
2.1創建數據庫
from django.dbimport models
# Create your models here.
class User(models.Model):
name= models.CharField(max_length=50)
# upload_to 指定上傳文件位置
# 這裏指定存放在img/ 目錄下
headimg = models.FileField(upload_to="img/")
# 返回名稱
def__str__(self):
returnself.name
2.2初始化數據庫：
(mypy3) ➜ BBS python manage.py makemigrations
Migrations for 'app01':
app01/migrations/0001_initial.py
- Create model User
(mypy3) ➜ BBS python manage.py migrate
Operations to perform:
Apply all migrations: admin, app01, auth, contenttypes, sessions
第3章 修改配置文件
3.1settings中增加如下配置：
MEDIA_ROOT= os.path.join(BASE_DIR, 'media').replace("\\", "/")
MEDIA_URL = '/media/'
3.2工程的urls文件：
from django.conf.urlsimport url
from django.contrib import admin
from django.urls import path, include
from django.conf.urls.static import static
from django.conf import settings
urlpatterns = [
url(r'^admin/', admin.site.urls),
# url(r'^regsiter/', views.regsiter),
# url(r'', TemplateView.as_view(template_name="app01/index.html")),
path('app01/', include('app01.urls'))
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
3.3app：
from django.urlsimport path
from . import views
app_name = 'app01'
urlpatterns = [
path('add/', views.add, name='add'),
# path('index/', views.index, name='index'),
]
3.4修改模版配置：
TEMPLATES= [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
第4章 數據校驗模塊：
數據需要校驗的情況下，如果你不想校驗，這個可以忽略
4.1在app下創建forms文件：
from django import forms
# 表單類用以生成表單
class AddForm(forms.Form):
name = forms.CharField()
headimg = forms.FileField()
第5章 視圖層：
5.1編寫圖片處理邏輯
from django.shortcutsimport render
from .models import User
from .forms import AddForm
# Create your views here.
def add(request):
# 判斷是否爲post 方法提交
ifrequest.method == "POST":
af = AddForm(request.POST, request.FILES)
# 判斷表單值是否和法
ifaf.is_valid():
name = af.cleaned_data['name']
headimg = af.cleaned_data['headimg']
user = User(name=name, headimg=headimg)
user.save()
returnrender(request, 'app01/index.html', context={"user":user})
else:
af = AddForm()
returnrender(request, 'app01/add.html', context={"af":af})
第6章 模版層：
上傳的html
<!-- templates/users/add.html -->
<!doctype html>
<html>
<head>
<title>Add</title>
<meta charset="utf-8">
</head>
<body>
<h1>Add!</h1>
<form method="post" enctype="multipart/form-data" action="{% url'app01:add' %}">
{%csrf_token %}
{{ af.as_p }}
<inputtype="submit" value="OK"/>
</form>
</body>
</html>
查看的html
<!-- templates/users/index.html -->
<!doctype html>
<html>
<head>
<title>Detail</title>
<meta charset="utf-8">
</head>
<body>
<p>{{user.name}}</p>
<img width="50%" height="50%"src="/media/{{ user.headimg }}">
</body>
</html>