community

backend/community/models.py

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+from django.db import models
+from shop.models import WeChatUser, ESP32Config, Order, Service, VCCourse, ServiceOrder
+
+class Activity(models.Model):
+    """
+    社区活动模型
+    """
+    title = models.CharField(max_length=100, verbose_name="活动标题")
+    description = models.TextField(verbose_name="活动详情")
+    banner = models.ImageField(upload_to='activities/banners/', verbose_name="活动Banner图")
+    start_time = models.DateTimeField(verbose_name="开始时间")
+    end_time = models.DateTimeField(verbose_name="结束时间")
+    location = models.CharField(max_length=100, verbose_name="活动地点")
+    max_participants = models.IntegerField(default=50, verbose_name="最大报名人数")
+    is_active = models.BooleanField(default=True, verbose_name="是否启用")
+    created_at = models.DateTimeField(auto_now_add=True, verbose_name="创建时间")
+
+    def __str__(self):
+        return self.title
+
+    class Meta:
+        verbose_name = "社区活动"
+        verbose_name_plural = "社区活动管理"
+
+
+class ActivitySignup(models.Model):
+    """
+    活动报名记录
+    """
+    STATUS_CHOICES = (
+        ('pending', '审核中'),
+        ('confirmed', '报名成功'),
+        ('cancelled', '已取消'),
+    )
+
+    activity = models.ForeignKey(Activity, on_delete=models.CASCADE, related_name='signups', verbose_name="活动")
+    user = models.ForeignKey(WeChatUser, on_delete=models.CASCADE, related_name='activity_signups', verbose_name="报名用户")
+    signup_time = models.DateTimeField(auto_now_add=True, verbose_name="报名时间")
+    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='confirmed', verbose_name="状态")
+
+    def __str__(self):
+        return f"{self.user.nickname} - {self.activity.title}"
+
+    class Meta:
+        verbose_name = "活动报名"
+        verbose_name_plural = "活动报名管理"
+        unique_together = ('activity', 'user')
+
+
+class Topic(models.Model):
+    """
+    论坛帖子/主题
+    """
+    title = models.CharField(max_length=200, verbose_name="标题")
+    content = models.TextField(verbose_name="内容", help_text="支持Markdown格式，支持插入图片")
+    author = models.ForeignKey(WeChatUser, on_delete=models.CASCADE, related_name='topics', verbose_name="作者")
+    
+    # 关联对象：硬件、服务、课程
+    related_product = models.ForeignKey(ESP32Config, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="关联硬件")
+    related_service = models.ForeignKey(Service, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="关联服务")
+    related_course = models.ForeignKey(VCCourse, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="关联课程")
+    
+    view_count = models.IntegerField(default=0, verbose_name="浏览量")
+    is_pinned = models.BooleanField(default=False, verbose_name="置顶")
+    created_at = models.DateTimeField(auto_now_add=True, verbose_name="发布时间")
+    updated_at = models.DateTimeField(auto_now=True, verbose_name="更新时间")
+
+    def __str__(self):
+        return self.title
+
+    @property
+    def is_verified_owner(self):
+        """
+        判断作者是否为关联项目（硬件/服务/课程）的已购用户（Verified Owner）
+        """
+        # 1. 验证硬件
+        if self.related_product:
+            if Order.objects.filter(
+                wechat_user=self.author,
+                config=self.related_product,
+                status__in=['paid', 'shipped']
+            ).exists():
+                return True
+        
+        # 2. 验证课程
+        if self.related_course:
+            if Order.objects.filter(
+                wechat_user=self.author,
+                course=self.related_course,
+                status__in=['paid', 'shipped']
+            ).exists():
+                return True
+        
+        # 3. 验证服务
+        if self.related_service:
+            # ServiceOrder 模型中没有 direct link to WeChatUser (only phone/name), 
+            # 但我们假设通过手机号或未来关联来验证，目前先检查 ServiceOrder 是否有对应记录。
+            # 由于 ServiceOrder 目前设计没有直接关联 WeChatUser 字段，我们暂时尝试通过名字或后续改进。
+            # 经检查 shop/models.py, ServiceOrder 确实只有 customer_name/phone_number. 
+            # 这里为了严谨，我们暂时仅对有关联的进行检查，或者需要改进 ServiceOrder。
+            # 鉴于当前任务范围，如果 ServiceOrder 没有 user 字段，我们可能无法精确验证，
+            # 除非我们假设用户填写的手机号与微信用户关联。
+            # *修正*: 为了快速实现，我们先跳过 ServiceOrder 的精确验证，或者仅仅返回 False，
+            # 等待后续 ServiceOrder 添加 wechat_user 字段。
+            pass
+            
+        return False
+
+    class Meta:
+        verbose_name = "论坛帖子"
+        verbose_name_plural = "论坛帖子管理"
+        ordering = ['-is_pinned', '-created_at']
+
+
+class Reply(models.Model):
+    """
+    帖子回复
+    """
+    topic = models.ForeignKey(Topic, on_delete=models.CASCADE, related_name='replies', verbose_name="所属帖子")
+    content = models.TextField(verbose_name="回复内容", help_text="支持Markdown格式")
+    author = models.ForeignKey(WeChatUser, on_delete=models.CASCADE, related_name='replies', verbose_name="回复者")
+    reply_to = models.ForeignKey('self', on_delete=models.SET_NULL, null=True, blank=True, related_name='children', verbose_name="回复楼层")
+    created_at = models.DateTimeField(auto_now_add=True, verbose_name="回复时间")
+
+    def __str__(self):
+        return f"回复: {self.topic.title}"
+
+    class Meta:
+        verbose_name = "帖子回复"
+        verbose_name_plural = "帖子回复管理"
+        ordering = ['created_at']
+
+
+class TopicMedia(models.Model):
+    """
+    论坛多媒体资源（图片/视频/文件）
+    """
+    MEDIA_TYPE_CHOICES = (
+        ('image', '图片'),
+        ('video', '视频'),
+        ('file', '文件'),
+    )
+
+    topic = models.ForeignKey(Topic, on_delete=models.CASCADE, related_name='media', verbose_name="所属帖子", null=True, blank=True)
+    reply = models.ForeignKey(Reply, on_delete=models.CASCADE, related_name='media', verbose_name="所属回复", null=True, blank=True)
+    file = models.FileField(upload_to='community/media/', verbose_name="文件")
+    media_type = models.CharField(max_length=10, choices=MEDIA_TYPE_CHOICES, default='image', verbose_name="媒体类型")
+    created_at = models.DateTimeField(auto_now_add=True, verbose_name="上传时间")
+
+    def __str__(self):
+        return f"{self.media_type} - {self.file.name}"
+
+    class Meta:
+        verbose_name = "论坛媒体资源"
+        verbose_name_plural = "论坛媒体资源管理"