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python - Python-Django-Heroku 无法在 heroku 中找到图像，图像不可见

问题描述

所以我最近将我的 django/python 网站（使用 sqllite 作为数据库）部署到了 heroku，它免费托管网站，一切都正常运行，就像我以前在浏览器中运行 localhost 时一样，除了这个项目使用 postgressql 数据库和 heroku并且图像没有出现在我的网站上，我到处查看，我认为这与数据库中的上传文件有关（图像的路径仍然相同，但图像的位置发生了变化）。

本地主机图片链接：“http://localhost:8000/image/download/uploads/products/white_shirt_MERETfT.jpg” heroku 图片链接：“https://supremelebanon.herokuapp.com/image/download/uploads/products/offwhite_shirt_tQWa19c .jpg”它说当我在heroku主机上加载网站时找不到图像。请任何人我仍然是heroku的新手，我真的不知道它是如何工作的，如果有人可以提供帮助，将不胜感激，在此先感谢。设置.py 文件：

import os
from pathlib import Path
import django_heroku
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'morrr7ht4t4m)j#%ws34ntr7mdq$pui)+uy2-#%tx^iznh_##6'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = False

ALLOWED_HOSTS = ['supremelebanon.herokuapp.com', 'localhost', '127.0.0.1']

# Application definition

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

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    # 'store.middlewares.auth.auth_middleware'
]

ROOT_URLCONF = 'supremelebanon.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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',
            ],
        },
    },
]

WSGI_APPLICATION = 'supremelebanon.wsgi.application'

# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'static')
MEDIA_URL = "/image/download/"
MEDIA_ROOT = BASE_DIR

# Activate Django-Heroku.
django_heroku.settings(locals())

index.html 中的图像部分：

{% extends 'base.html' %}

{% block content %}

{% load cart %}
{% load custom_filter %}

{{customer}}
{% if request.session.customer %}
<!-- body -->

<div class="container-fluid mt-3">
<div class="row">

<!--filter-->

<div class="col-lg-3 mx-auto">
    <div class="list-group">
        <a href="/" class="list-group-item list-group-item-action ">All Products</a> <!-- GOTTA DO A DROPDOWN -->
       {% for category in categories %}
          <a href="/?category={{category.id}}" class="list-group-item list-group-item-action ">{{category.name}}</a>
       {% endfor %}
    </div>
</div>

<!-- all products -->
    <div id='products' class="col-lg-9 mx-auto">
        <div class="row mx-auto">
            {% for product in products %}
                <div class="card mx-auto mb-3" id="{{product.id}}" style="width: 18rem;">
                  <img class="card-img-top" src="{{product.image.url}}" alt="Card image cap">

标签： pythondjangoheroku

解决方案

你可以试试这个settings.py，在测试之前你可以与你的代码进行比较并查看差异

import os
from pathlib import Path
import django_heroku
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'morrr7ht4t4m)j#%ws34ntr7mdq$pui)+uy2-#%tx^iznh_##6'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = False

ALLOWED_HOSTS = ['supremelebanon.herokuapp.com', 'localhost', '127.0.0.1']

# Application definition

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

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
'whitenoise.middleware.WhiteNoiseMiddleware',
 # 'store.middlewares.auth.auth_middleware'
]

ROOT_URLCONF = 'supremelebanon.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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',
            ],
        },
    },
]

WSGI_APPLICATION = 'supremelebanon.wsgi.application'

# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
try:
  from projectname.local_settings.py import DATABASES
except:
   import dj_database_url  
   import dotenv
   DATABASES = {}
   DATABASES['default'] = dj_database_url.config()
   STATICFILES_STORAGE =  'whitenoise.django.GzipManifestStaticFilesStorage'
   SECURE_SSL_REDIRECT = True # [1]
   SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')


# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'static')
MEDIA_URL = "/image/download/"
MEDIA_ROOT = BASE_DIR

# Activate Django-Heroku.
#django_heroku.settings(locals())

对于您的 local_settings.py 是：

import os
from projectname.settings import BASE_DIR

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

简要说明

我们必须添加允许您在生产中提供文件的白噪声，如果您注意到，heroku 在生产中使用 postgres 作为数据库，因此最好将其用于生产。

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