feat: 优化PDF报告生成逻辑并添加调试脚本

移除对weasyprint_available的冗余检查，使用更高效的Count查询统计家庭事项
添加debug_pdf_email.py调试脚本用于直接测试PDF生成和邮件发送功能

core/tasks.py

@@ -355,8 +355,7 @@ def celery_send_pdf_report_email(self):
             logger.error(f"[任务 {task_id}] ❌ WeasyPrint库无法导入: {e}")
             raise ValueError("WeasyPrint库无法导入，PDF功能将不可用")
         
-        if not weasyprint_available:
+        
-            raise ValueError("WeasyPrint库不可用，无法生成PDF报告")
         
         # 从数据库获取邮件配置
         from core.models import SystemConfig, ReadingRecord, InsightRecord, TodayPlan, FamilyTask
@@ -415,7 +414,8 @@ def celery_send_pdf_report_email(self):
         
         # 获取家庭事项统计
         logger.info(f"[任务 {task_id}] 📊 获取家庭事项统计...")
-        family_task_stats = FamilyTask.objects.values('type').annotate(count=FamilyTask.objects.values('id').filter(type=F('type')).count())
+        from django.db.models import Count
+        family_task_stats = FamilyTask.objects.values('type').annotate(count=Count('id'))
         logger.info(f"[任务 {task_id}] ✅ 家庭事项统计: {len(family_task_stats)} 个类型")
         
         # 准备上下文数据
@@ -445,7 +445,6 @@ def celery_send_pdf_report_email(self):
         
         # 使用WeasyPrint生成PDF，设置超时
         logger.info(f"[任务 {task_id}] 📄 正在生成PDF...")
-        from weasyprint import HTML
         HTML(string=html_string).write_pdf(pdf_path, timeout=60)  # 设置60秒超时
         logger.info(f"[任务 {task_id}] ✅ PDF报告生成成功: {pdf_path}")
         

core/templates/core/report.html

@@ -168,4 +168,21 @@
         });
     });
 </script>
+
+<div class="card mt-4">
+    <div class="card-header bg-info text-white">
+        <h5 class="card-title mb-0">历史PDF报告</h5>
+    </div>
+    <div class="card-body">
+        <div class="row">
+            {% for date in historical_dates %}
+            <div class="col-md-3 mb-2">
+                <a href="{% url 'generate_pdf_report' date|date:'Y-m-d' %}" class="btn btn-outline-primary btn-sm btn-block">
+                    {{ date }} PDF
+                </a>
+            </div>
+            {% endfor %}
+        </div>
+    </div>
+</div>
 {% endblock %}

core/views.py

@@ -435,6 +435,12 @@ def generate_report(request):
     # 获取家庭事项统计
     family_task_stats = FamilyTask.objects.values('type').annotate(count=Count('id'))
     
+    # 获取过去30天的日期列表，用于生成历史PDF链接
+    historical_dates = []
+    for i in range(1, 31):
+        historical_date = today - timedelta(days=i)
+        historical_dates.append(historical_date)
+    
     context = {
         'today': today,
         'yesterday': yesterday,
@@ -442,6 +448,7 @@ def generate_report(request):
         'yesterday_insight': yesterday_insight,
         'today_plan': today_plan,
         'family_task_stats': family_task_stats,
+        'historical_dates': historical_dates,
     }
     
     return render(request, 'core/report.html', context)

debug_pdf_email.py

@@ -0,0 +1,259 @@
+#!/usr/bin/env python
+"""
+PDF邮件发送调试脚本
+用于在生产服务器上直接调试PDF生成和邮件发送功能，无需依赖Celery
+"""
+
+import os
+import sys
+import time
+from pathlib import Path
+from loguru import logger
+
+# 配置日志
+logger.remove()
+logger.add(
+    sys.stdout,
+    format="<green>{time:YYYY-MM-DD HH:mm:ss}</green> | <level>{level: <8}</level> | <cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - <level>{message}</level>",
+    level="DEBUG"
+)
+
+logger.add(
+    "debug_pdf_email.log",
+    format="{time:YYYY-MM-DD HH:mm:ss} | {level: <8} | {name}:{function}:{line} - {message}",
+    level="DEBUG",
+    rotation="1 day",
+    retention="7 days",
+    encoding="utf-8"
+)
+
+logger.info("=== PDF邮件发送调试脚本开始 ===")
+logger.info(f"Python版本: {sys.version}")
+logger.info(f"当前目录: {os.getcwd()}")
+
+# 初始化Django环境
+def init_django():
+    """初始化Django环境"""
+    logger.info("初始化Django环境...")
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'diary_family.settings')
+    import django
+    django.setup()
+    logger.info("✅ Django环境初始化成功")
+
+# 测试WeasyPrint安装
+def test_weasyprint():
+    """测试WeasyPrint是否正确安装"""
+    logger.info("测试WeasyPrint安装...")
+    try:
+        from weasyprint import HTML
+        logger.info("✅ WeasyPrint导入成功")
+        return True
+    except ImportError as e:
+        logger.error(f"❌ WeasyPrint导入失败: {e}")
+        logger.error("解决方案: 运行 'pip install weasyprint' 安装WeasyPrint库")
+        return False
+    except Exception as e:
+        logger.error(f"❌ WeasyPrint测试失败: {e}")
+        return False
+
+# 测试生成PDF
+def test_pdf_generation():
+    """测试生成PDF"""
+    logger.info("测试生成PDF...")
+    try:
+        from django.conf import settings
+        from django.template.loader import render_to_string
+        from weasyprint import HTML
+        from core.models import SystemConfig, ReadingRecord, InsightRecord, TodayPlan, FamilyTask
+        from django.utils import timezone
+        from datetime import timedelta
+        
+        # 准备数据
+        today = timezone.now().date()
+        yesterday = today - timedelta(days=1)
+        
+        logger.info(f"报告日期: {today}, 昨日: {yesterday}")
+        
+        # 获取数据
+        yesterday_reading = ReadingRecord.objects.filter(date=yesterday)
+        yesterday_insight = InsightRecord.objects.filter(date=yesterday)
+        today_plan = TodayPlan.objects.filter(date=today)
+        
+        logger.info(f"昨日阅读记录: {yesterday_reading.count()} 条")
+        logger.info(f"昨日感悟记录: {yesterday_insight.count()} 条")
+        logger.info(f"今日计划: {today_plan.count()} 项")
+        
+        # 准备上下文
+        context = {
+            'today': today,
+            'yesterday': yesterday,
+            'yesterday_reading': yesterday_reading,
+            'yesterday_insight': yesterday_insight,
+            'today_plan': today_plan,
+        }
+        
+        # 渲染模板
+        logger.info("渲染HTML模板...")
+        html_string = render_to_string('core/report_pdf.html', context)
+        logger.info("✅ HTML模板渲染成功")
+        
+        # 生成PDF
+        pdf_file = f"debug_report_{today.strftime('%Y-%m-%d')}.pdf"
+        pdf_path = os.path.join(settings.REPORTS_ROOT, pdf_file)
+        
+        logger.info(f"生成PDF文件: {pdf_path}")
+        os.makedirs(settings.REPORTS_ROOT, exist_ok=True)
+        
+        HTML(string=html_string).write_pdf(pdf_path, timeout=60)
+        logger.info(f"✅ PDF生成成功，文件大小: {os.path.getsize(pdf_path) / 1024:.2f} KB")
+        
+        return pdf_path
+        
+    except Exception as e:
+        logger.error(f"❌ PDF生成失败: {e}")
+        import traceback
+        logger.error(f"错误详情:\n{traceback.format_exc()}")
+        return None
+
+# 测试邮件发送
+def test_email_sending(pdf_path=None):
+    """测试邮件发送"""
+    logger.info("测试邮件发送...")
+    try:
+        from django.core.mail import EmailMessage
+        from django.core.mail.backends.smtp import EmailBackend
+        from core.models import SystemConfig
+        from django.utils import timezone
+        
+        # 获取配置
+        config = SystemConfig.get_config()
+        
+        # 验证配置
+        required_fields = ['smtp_server', 'smtp_username', 'smtp_password', 'recipient_email']
+        missing_fields = []
+        for field in required_fields:
+            if not getattr(config, field):
+                missing_fields.append(field)
+        
+        if missing_fields:
+            logger.error(f"❌ 缺少必要的邮件配置: {', '.join(missing_fields)}")
+            logger.error("解决方案: 登录管理后台，配置邮件设置")
+            return False
+        
+        # 准备邮件
+        from_email = config.sender_email or config.smtp_username
+        to_email = config.recipient_email
+        subject = f"[调试] 家庭日报 {timezone.now().date()} - PDF报告"
+        body = f"""
+        这是一封调试邮件，用于测试PDF生成和邮件发送功能。
+        
+        发送时间: {timezone.now().strftime('%Y-%m-%d %H:%M:%S')}
+        报告日期: {timezone.now().date()}
+        
+        这封邮件是从调试脚本直接发送的，没有经过Celery队列。
+        """
+        
+        # 创建SMTP连接
+        logger.info(f"创建SMTP连接: {config.smtp_server}:{config.smtp_port}")
+        logger.info(f"发件人: {from_email}")
+        logger.info(f"收件人: {to_email}")
+        
+        backend = EmailBackend(
+            host=config.smtp_server,
+            port=config.smtp_port or 587,
+            username=config.smtp_username,
+            password=config.smtp_password,
+            use_tls=True,
+            fail_silently=False,
+            timeout=30
+        )
+        
+        # 创建邮件
+        email = EmailMessage(
+            subject=subject,
+            body=body,
+            from_email=from_email,
+            to=[to_email],
+            connection=backend
+        )
+        
+        # 添加附件
+        if pdf_path and os.path.exists(pdf_path):
+            logger.info(f"添加PDF附件: {pdf_path}")
+            with open(pdf_path, 'rb') as f:
+                email.attach(os.path.basename(pdf_path), f.read(), 'application/pdf')
+        
+        # 发送邮件
+        logger.info("发送邮件...")
+        sent_count = email.send(fail_silently=False)
+        logger.info(f"邮件发送返回: {sent_count}")
+        
+        if sent_count > 0:
+            logger.success("✅ 邮件发送成功！")
+            return True
+        else:
+            logger.error("❌ 邮件发送失败")
+            return False
+            
+    except Exception as e:
+        logger.error(f"❌ 邮件发送失败: {e}")
+        import traceback
+        logger.error(f"错误详情:\n{traceback.format_exc()}")
+        return False
+
+# 测试Redis连接
+def test_redis_connection():
+    """测试Redis连接"""
+    logger.info("测试Redis连接...")
+    try:
+        import redis
+        from django.conf import settings
+        
+        redis_url = settings.CELERY_BROKER_URL
+        logger.info(f"Redis URL: {redis_url}")
+        
+        # 测试连接
+        client = redis.from_url(redis_url, socket_connect_timeout=10, socket_timeout=10)
+        pong = client.ping()
+        logger.info(f"Redis ping: {pong}")
+        logger.info(f"Redis版本: {client.info().get('redis_version', '未知')}")
+        client.close()
+        logger.info("✅ Redis连接成功")
+        return True
+    except Exception as e:
+        logger.error(f"❌ Redis连接失败: {e}")
+        return False
+
+# 主函数
+def main():
+    """主函数"""
+    logger.info("=== PDF邮件发送调试开始 ===")
+    
+    # 初始化Django
+    init_django()
+    
+    # 测试Redis连接
+    logger.info("\n1. 测试Redis连接")
+    test_redis_connection()
+    
+    # 测试WeasyPrint
+    logger.info("\n2. 测试WeasyPrint")
+    if not test_weasyprint():
+        logger.error("WeasyPrint测试失败，无法继续")
+        return 1
+    
+    # 测试生成PDF
+    logger.info("\n3. 测试生成PDF")
+    pdf_path = test_pdf_generation()
+    if not pdf_path:
+        logger.error("PDF生成失败，无法继续邮件发送测试")
+    else:
+        # 测试发送邮件
+        logger.info("\n4. 测试发送邮件")
+        test_email_sending(pdf_path)
+    
+    logger.info("\n=== PDF邮件发送调试结束 ===")
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(main())