2026年3月29日 星期日

[水井USR] 在Pythonanaywhere上用Django網站顯示3D模型，加上資料庫

 




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"""
URL configuration for ARmodelViewer project.

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/5.1/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""

from django.contrib import admin
from django.urls import path
from myapp import views

urlpatterns = [
    path("admin/", admin.site.urls),
    path('', views.model_viewer, name='ar_model_viewer'),
    path('ar-model-viewer/', views.model_viewer, name='ar_model_viewer'),
    path('ar-model-viewer/<int:model_id>/', views.model_viewer, name='ar_model_viewer'),
]

2.ARmodelViewer/ARmodelViewer/settings.py

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"""
Django settings for ARmodelViewer project.

Generated by 'django-admin startproject' using Django 5.1.3.

For more information on this file, see
https://docs.djangoproject.com/en/5.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.1/ref/settings/
"""

from pathlib import Path

# 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/5.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = "django-insecure-*bq*cvi-kt)h@l4yi2mto%h($^_n5rl^6q4udiyu==j###sgaz"

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

ALLOWED_HOSTS = ['ARmodelViewer.pythonanywhere.com']


# Application definition

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "myapp",
]

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",
]

ROOT_URLCONF = "ARmodelViewer.urls"

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

WSGI_APPLICATION = "ARmodelViewer.wsgi.application"


# Database
# https://docs.djangoproject.com/en/5.1/ref/settings/#databases

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


# Password validation
# https://docs.djangoproject.com/en/5.1/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/5.1/topics/i18n/

LANGUAGE_CODE = "en-us"

TIME_ZONE = "UTC"

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.1/howto/static-files/

STATIC_URL = "static/"

# Default primary key field type
# https://docs.djangoproject.com/en/5.1/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

# default static files settings for PythonAnywhere.
# see https://help.pythonanywhere.com/pages/DjangoStaticFiles for more info
MEDIA_ROOT = '/home/ARmodelViewer/ARmodelViewer/media'
MEDIA_URL = '/media/'
STATIC_ROOT = '/home/ARmodelViewer/ARmodelViewer/static'
STATIC_URL = '/static/'
STATICFILES_DIRS = [
    BASE_DIR / "static",
]
STATIC_ROOT = BASE_DIR / 'staticfiles'

3.ARmodelViewer/myapp/views.py

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from django.shortcuts import render, get_object_or_404
from .models import ARModel

def model_viewer(request, model_id=None):
    if model_id:
        ar_model = get_object_or_404(ARModel, id=model_id, is_active=True)
    else:
        # 預設取第一個啟用的模型，或根據需求調整
        ar_model = ARModel.objects.filter(is_active=True).first()
        if not ar_model:
            # 可處理無模型的情況
            return render(request, 'ar_no_model.html')

    context = {
        'ar_model': ar_model,
    }
    return render(request, 'ar_model_viewer.html', context)

4.ARmodelViewer/myapp/models.py

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from django.db import models

class ARModel(models.Model):
    title = models.CharField(max_length=200, verbose_name="模型標題")
    gltf_url = models.URLField(verbose_name="GLTF 模型 URL", help_text="例如：https://cdn.aframe.io/.../scene.gltf")
    asset_id = models.SlugField(max_length=100, default="model", verbose_name="Asset ID")
    description = models.TextField(blank=True, verbose_name="模型描述")
    shadow_image = models.ImageField(upload_to='ar_shadows/', blank=True, null=True, verbose_name="陰影圖片")
    is_active = models.BooleanField(default=True, verbose_name="啟用")

    def __str__(self):
        return self.title

    class Meta:
        verbose_name = "AR/VR 模型"
        verbose_name_plural = "AR/VR 模型"

5.ARmodelViewer/myapp/admin.py

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from django.contrib import admin
from .models import ARModel

admin.site.register(ARModel)

6.ARmodelViewer/templates/ar_model_viewer.html

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{% load static %}

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Model Viewer AR - VR</title>
  <meta name="description" content="Model Viewer (VR / AR) • A-Frame">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />

  <!-- A-Frame 主程式庫 -->
  <script src="https://aframe.io/releases/1.7.1/aframe.min.js"></script>

  <!-- 自訂 components -->
  <script src="{% static 'js/animation-mixer.js' %}"></script>
  <script src="{% static 'js/ar-shadows.js' %}"></script>
  <script src="{% static 'js/model-viewer.js' %}"></script>
  <script src="{% static 'js/background-gradient.js' %}"></script>
</head>
<body>
  <a-scene
    renderer="colorManagement: true;"
    info-message="htmlSrc: #messageText"
    model-viewer="gltfModel: #{{ ar_model.asset_id }}; title: {{ ar_model.title|escapejs }}"
    xr-mode-ui="XRMode: xr">

    <a-assets timeout="10000">
      <!-- 由後台指定的模型 -->
      <a-asset-item id="{{ ar_model.asset_id }}"
        src="{{ ar_model.gltf_url }}"
        response-type="arraybuffer"></a-asset-item>

      {% if ar_model.shadow_image %}
        <img id="shadow" src="{{ ar_model.shadow_image.url }}">
      {% else %}
        <img id="shadow" src="{% static 'images/shadow.png' %}">
      {% endif %}

    </a-assets>

  </a-scene>

  <!-- 可選：顯示模型描述 -->
  {% if ar_model.description %}
  <div style="position: absolute; bottom: 10px; left: 10px; background: rgba(0,0,0,0.6); color: white; padding: 10px; border-radius: 5px;">
    {{ ar_model.description }}
  </div>
  {% endif %}
</body>
</html>

7.ARmodelViewer/templates/ar_no_model.html

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{% load static %}
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>沒有可顯示的模型</title>
  <style>
    body { font-family: Arial, sans-serif; text-align: center; padding: 100px; background: #f8f9fa; }
    h1 { color: #dc3545; }
  </style>
</head>
<body>
  <h1>目前沒有可顯示的 AR/VR 模型</h1>
  <p>請先登入 Django Admin 後台，新增至少一個 ARModel 並勾選「啟用」。</p>
  <p><a href="/admin/">前往後台管理</a></p>
</body>
</html>
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