Django学习手册 - ORM - ImageField数据类型

前置步骤

setting.py文件配置:

　　添加app目录

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01',
]

　　添加media文件和路径

PROJECT_ROOT = os.path.abspath(os.path.join(os.path.dirname('__file__')))
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

app目录下models.py配置

from django.db import models

# Create your models here.

class Test(models.Model):
    name = models.CharField(max_length=50)
    image = models.ImageField(upload_to='logo/')

注意:

　　ImageField() 依赖 Pillow (pip install Pillow)

　　这里login是目录路径完整的路径是 /media/logo/图片

这里图片可以通过Django admin后台直接添加

所有设置一下app里 admin.py文件

from django.contrib import admin
from app01.models import Test

# Register your models here.

admin.site.register(Test)

引入models 中的Test类然后 admin.site.register(Test)

接着加载数据库写入数据库

创建超级用户

然后就是正常的Django访问配置了:

urls.py配置

注意!!! 这里必须要添加static 目录,后端通过传递/media/logo/图片,而这里是将图片传递到前端浏览器,这样才能访问路径的图片

from django.contrib import admin
from django.urls import path
from app01 import views
from django.conf.urls import url
from django.conf import settings
from django.conf.urls.static import static

urlpatterns = [
    path('admin/', admin.site.urls),
    url(r'index/', views.index),
]
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

views.py配置

from django.shortcuts import render,HttpResponse
from app01 import models

# Create your views here.

def index(request):
    img = models.Test.objects.all()
    # img = models.Test.objects.filter(id=1)[0].image.url
    return render(request,'index.html',{'img':img})

从数据库中读取图片路径然后传递到前端页面.

前端页面:

后台传递的若是: img = models.Test.objects.all()
前端则是:

<body>
    {% for i in img %}
        <img src="{{ i.image.url}}">
    {% endfor %}
</body>

后台传递的若是:img = models.Test.objects.filter(id=1)[0].image.url
前端则是:

<body>
   {{ img }}
</body>

测试:

添加图片以后再访问index页面

Django学习手册 - ORM - ImageField数据类型

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