refactor: 重构后端架构，采用 Go 风格四层设计模式
## 主要变更 ### 🏗️ 架构重构 - 采用简洁的四层架构：API → Service → Repository → Model - 遵循 Go 语言最佳实践和命名规范 - 实现依赖注入和接口导向设计 - 统一错误处理和响应格式 ### 📁 目录结构优化 - 删除重复模块 (application/, domain/, infrastructure/ 等) - 规范化命名 (使用 Go 风格的 snake_case) - 清理无关文件 (package.json, node_modules/ 等) - 新增规范化的测试目录结构 ### 📚 文档系统 - 为每个模块创建详细的 CLAUDE.md 指导文件 - 包含开发规范、最佳实践和使用示例 - 支持模块化开发，缩短上下文长度 ### 🔧 开发规范 - 统一接口命名规范 (UserServicer, PhotoRepositoryr) - 标准化错误处理机制 - 完善的测试策略 (单元测试、集成测试、性能测试) - 规范化的配置管理 ### 🗂️ 新增文件 - cmd/server/ - 服务启动入口和配置 - internal/model/ - 数据模型层 (entity, dto, request) - pkg/ - 共享工具包 (logger, response, validator) - tests/ - 完整测试结构 - docs/ - API 文档和架构设计 - .gitignore - Git 忽略文件配置 ### 🗑️ 清理内容 - 删除 Node.js 相关文件 (package.json, node_modules/) - 移除重复的架构目录 - 清理临时文件和构建产物 - 删除重复的文档文件 ## 影响 - 提高代码可维护性和可扩展性 - 统一开发规范，提升团队协作效率 - 优化项目结构，符合 Go 语言生态标准 - 完善文档体系，降低上手难度
This commit is contained in:
xujiang
@ -7,9 +7,15 @@ CREATE TABLE users (
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password VARCHAR(255) NOT NULL,
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name VARCHAR(100),
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avatar VARCHAR(500),
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role VARCHAR(20) DEFAULT 'user',
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bio TEXT,
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website VARCHAR(200),
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location VARCHAR(100),
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role VARCHAR(20) DEFAULT 'user' CHECK (role IN ('user', 'admin', 'photographer')),
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is_active BOOLEAN DEFAULT true,
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is_public BOOLEAN DEFAULT true,
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email_verified BOOLEAN DEFAULT false,
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last_login TIMESTAMP,
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login_count INTEGER DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP
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@ -19,12 +25,30 @@ CREATE TABLE users (
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CREATE INDEX idx_users_username ON users(username);
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CREATE INDEX idx_users_email ON users(email);
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CREATE INDEX idx_users_role ON users(role);
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CREATE INDEX idx_users_deleted_at ON users(deleted_at);
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CREATE INDEX idx_users_is_active ON users(is_active);
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CREATE INDEX idx_users_is_public ON users(is_public);
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CREATE INDEX idx_users_email_verified ON users(email_verified);
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CREATE INDEX idx_users_created_at ON users(created_at);
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CREATE INDEX idx_users_deleted_at ON users(deleted_at) WHERE deleted_at IS NOT NULL;
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-- 添加更新时间触发器
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CREATE OR REPLACE FUNCTION update_updated_at_column()
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RETURNS TRIGGER AS $$
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BEGIN
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NEW.updated_at = CURRENT_TIMESTAMP;
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RETURN NEW;
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END;
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$$ language 'plpgsql';
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CREATE TRIGGER update_users_updated_at BEFORE UPDATE ON users
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FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
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-- 插入默认管理员用户 (密码: admin123)
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INSERT INTO users (username, email, password, name, role) VALUES
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('admin', 'admin@photography.com', '$2a$10$D4Zz6m3j1YJzp8Y7zW4l2OXcQ5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0', '管理员', 'admin');
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INSERT INTO users (username, email, password, name, role, email_verified) VALUES
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('admin', 'admin@photography.com', '$2a$10$D4Zz6m3j1YJzp8Y7zW4l2OXcQ5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0', '管理员', 'admin', true);
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-- +migrate Down
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DROP TRIGGER IF EXISTS update_users_updated_at ON users;
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DROP FUNCTION IF EXISTS update_updated_at_column();
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DROP TABLE IF EXISTS users;
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64
backend/migrations/002_create_photos.sql
Normal file
64
backend/migrations/002_create_photos.sql
Normal file
@ -0,0 +1,64 @@
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-- +migrate Up
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CREATE TABLE photos (
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id SERIAL PRIMARY KEY,
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title VARCHAR(200) NOT NULL,
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description TEXT,
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filename VARCHAR(255) NOT NULL,
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original_url VARCHAR(500) NOT NULL,
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thumbnail_url VARCHAR(500),
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medium_url VARCHAR(500),
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large_url VARCHAR(500),
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file_size BIGINT,
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mime_type VARCHAR(100),
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width INTEGER,
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height INTEGER,
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camera_make VARCHAR(100),
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camera_model VARCHAR(100),
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lens_model VARCHAR(100),
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focal_length DECIMAL(5,2),
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aperture DECIMAL(3,1),
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shutter_speed VARCHAR(20),
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iso INTEGER,
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taken_at TIMESTAMP,
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location_name VARCHAR(200),
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latitude DECIMAL(10,8),
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longitude DECIMAL(11,8),
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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album_id INTEGER,
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category_id INTEGER,
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is_public BOOLEAN DEFAULT true,
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is_featured BOOLEAN DEFAULT false,
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view_count INTEGER DEFAULT 0,
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like_count INTEGER DEFAULT 0,
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download_count INTEGER DEFAULT 0,
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sort_order INTEGER DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP
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);
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-- 创建索引
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CREATE INDEX idx_photos_user_id ON photos(user_id);
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CREATE INDEX idx_photos_album_id ON photos(album_id);
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CREATE INDEX idx_photos_category_id ON photos(category_id);
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CREATE INDEX idx_photos_is_public ON photos(is_public);
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CREATE INDEX idx_photos_is_featured ON photos(is_featured);
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CREATE INDEX idx_photos_taken_at ON photos(taken_at);
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CREATE INDEX idx_photos_created_at ON photos(created_at);
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CREATE INDEX idx_photos_view_count ON photos(view_count);
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CREATE INDEX idx_photos_like_count ON photos(like_count);
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CREATE INDEX idx_photos_sort_order ON photos(sort_order);
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CREATE INDEX idx_photos_deleted_at ON photos(deleted_at) WHERE deleted_at IS NOT NULL;
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-- 地理位置索引
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CREATE INDEX idx_photos_location ON photos(latitude, longitude) WHERE latitude IS NOT NULL AND longitude IS NOT NULL;
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-- 添加更新时间触发器
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CREATE TRIGGER update_photos_updated_at BEFORE UPDATE ON photos
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FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
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-- +migrate Down
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DROP TRIGGER IF EXISTS update_photos_updated_at ON photos;
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DROP TABLE IF EXISTS photos;
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73
backend/migrations/003_create_albums.sql
Normal file
73
backend/migrations/003_create_albums.sql
Normal file
@ -0,0 +1,73 @@
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-- +migrate Up
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CREATE TABLE albums (
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id SERIAL PRIMARY KEY,
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title VARCHAR(200) NOT NULL,
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description TEXT,
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slug VARCHAR(255) UNIQUE,
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cover_photo_id INTEGER REFERENCES photos(id) ON DELETE SET NULL,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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category_id INTEGER REFERENCES categories(id) ON DELETE SET NULL,
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is_public BOOLEAN DEFAULT true,
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is_featured BOOLEAN DEFAULT false,
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password VARCHAR(255),
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view_count INTEGER DEFAULT 0,
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like_count INTEGER DEFAULT 0,
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photo_count INTEGER DEFAULT 0,
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sort_order INTEGER DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP
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);
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-- 创建索引
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CREATE INDEX idx_albums_user_id ON albums(user_id);
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CREATE INDEX idx_albums_category_id ON albums(category_id);
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CREATE INDEX idx_albums_cover_photo_id ON albums(cover_photo_id);
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CREATE INDEX idx_albums_slug ON albums(slug);
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CREATE INDEX idx_albums_is_public ON albums(is_public);
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CREATE INDEX idx_albums_is_featured ON albums(is_featured);
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CREATE INDEX idx_albums_created_at ON albums(created_at);
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CREATE INDEX idx_albums_view_count ON albums(view_count);
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CREATE INDEX idx_albums_like_count ON albums(like_count);
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CREATE INDEX idx_albums_photo_count ON albums(photo_count);
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CREATE INDEX idx_albums_sort_order ON albums(sort_order);
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CREATE INDEX idx_albums_deleted_at ON albums(deleted_at) WHERE deleted_at IS NOT NULL;
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-- 添加更新时间触发器
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CREATE TRIGGER update_albums_updated_at BEFORE UPDATE ON albums
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FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
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-- 添加 slug 自动生成触发器
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CREATE OR REPLACE FUNCTION generate_album_slug()
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RETURNS TRIGGER AS $$
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BEGIN
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IF NEW.slug IS NULL OR NEW.slug = '' THEN
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NEW.slug = lower(regexp_replace(NEW.title, '[^a-zA-Z0-9]+', '-', 'g'));
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NEW.slug = trim(both '-' from NEW.slug);
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-- 确保 slug 唯一
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DECLARE
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counter INTEGER := 0;
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base_slug VARCHAR(255);
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BEGIN
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base_slug := NEW.slug;
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WHILE EXISTS (SELECT 1 FROM albums WHERE slug = NEW.slug AND id != COALESCE(NEW.id, 0)) LOOP
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counter := counter + 1;
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NEW.slug := base_slug || '-' || counter;
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END LOOP;
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END;
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END IF;
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RETURN NEW;
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END;
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$$ language 'plpgsql';
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CREATE TRIGGER generate_albums_slug BEFORE INSERT OR UPDATE ON albums
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FOR EACH ROW EXECUTE FUNCTION generate_album_slug();
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-- +migrate Down
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DROP TRIGGER IF EXISTS generate_albums_slug ON albums;
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DROP FUNCTION IF EXISTS generate_album_slug();
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DROP TRIGGER IF EXISTS update_albums_updated_at ON albums;
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DROP TABLE IF EXISTS albums;
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113
backend/migrations/004_create_categories.sql
Normal file
113
backend/migrations/004_create_categories.sql
Normal file
@ -0,0 +1,113 @@
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-- +migrate Up
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CREATE TABLE categories (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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description TEXT,
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slug VARCHAR(255) UNIQUE,
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parent_id INTEGER REFERENCES categories(id) ON DELETE CASCADE,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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cover_photo_id INTEGER REFERENCES photos(id) ON DELETE SET NULL,
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color VARCHAR(7) DEFAULT '#3B82F6',
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is_public BOOLEAN DEFAULT true,
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photo_count INTEGER DEFAULT 0,
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album_count INTEGER DEFAULT 0,
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sort_order INTEGER DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP
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);
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-- 创建索引
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CREATE INDEX idx_categories_user_id ON categories(user_id);
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CREATE INDEX idx_categories_parent_id ON categories(parent_id);
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CREATE INDEX idx_categories_cover_photo_id ON categories(cover_photo_id);
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CREATE INDEX idx_categories_slug ON categories(slug);
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CREATE INDEX idx_categories_is_public ON categories(is_public);
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CREATE INDEX idx_categories_created_at ON categories(created_at);
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CREATE INDEX idx_categories_photo_count ON categories(photo_count);
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CREATE INDEX idx_categories_album_count ON categories(album_count);
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CREATE INDEX idx_categories_sort_order ON categories(sort_order);
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CREATE INDEX idx_categories_deleted_at ON categories(deleted_at) WHERE deleted_at IS NOT NULL;
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-- 树形结构查询优化
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CREATE INDEX idx_categories_parent_sort ON categories(parent_id, sort_order);
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-- 添加更新时间触发器
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CREATE TRIGGER update_categories_updated_at BEFORE UPDATE ON categories
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FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
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-- 添加 slug 自动生成触发器
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CREATE OR REPLACE FUNCTION generate_category_slug()
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RETURNS TRIGGER AS $$
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BEGIN
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IF NEW.slug IS NULL OR NEW.slug = '' THEN
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NEW.slug = lower(regexp_replace(NEW.name, '[^a-zA-Z0-9]+', '-', 'g'));
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NEW.slug = trim(both '-' from NEW.slug);
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-- 确保 slug 唯一
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DECLARE
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counter INTEGER := 0;
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base_slug VARCHAR(255);
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BEGIN
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base_slug := NEW.slug;
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WHILE EXISTS (SELECT 1 FROM categories WHERE slug = NEW.slug AND id != COALESCE(NEW.id, 0)) LOOP
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counter := counter + 1;
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NEW.slug := base_slug || '-' || counter;
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END LOOP;
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END;
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END IF;
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RETURN NEW;
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END;
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$$ language 'plpgsql';
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CREATE TRIGGER generate_categories_slug BEFORE INSERT OR UPDATE ON categories
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FOR EACH ROW EXECUTE FUNCTION generate_category_slug();
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-- 插入默认分类
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INSERT INTO categories (name, description, slug, user_id, color, is_public)
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SELECT
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'风景摄影' as name,
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'自然风光、城市景观等风景类摄影作品' as description,
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'landscape' as slug,
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1 as user_id,
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'#10B981' as color,
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true as is_public
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WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
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INSERT INTO categories (name, description, slug, user_id, color, is_public)
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SELECT
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'人像摄影' as name,
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'肖像、写真、人物摄影作品' as description,
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'portrait' as slug,
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1 as user_id,
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'#F59E0B' as color,
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true as is_public
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WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
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INSERT INTO categories (name, description, slug, user_id, color, is_public)
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SELECT
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'街拍摄影' as name,
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'街头摄影、日常生活记录' as description,
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'street' as slug,
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1 as user_id,
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'#EF4444' as color,
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true as is_public
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WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
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INSERT INTO categories (name, description, slug, user_id, color, is_public)
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SELECT
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'建筑摄影' as name,
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'建筑、室内设计等建筑类摄影作品' as description,
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'architecture' as slug,
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1 as user_id,
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'#8B5CF6' as color,
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true as is_public
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WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
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-- +migrate Down
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DROP TRIGGER IF EXISTS generate_categories_slug ON categories;
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DROP FUNCTION IF EXISTS generate_category_slug();
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DROP TRIGGER IF EXISTS update_categories_updated_at ON categories;
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DROP TABLE IF EXISTS categories;
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164
backend/migrations/005_create_tags.sql
Normal file
164
backend/migrations/005_create_tags.sql
Normal file
@ -0,0 +1,164 @@
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-- +migrate Up
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-- 创建标签表
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CREATE TABLE tags (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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slug VARCHAR(255) UNIQUE,
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color VARCHAR(7) DEFAULT '#6B7280',
|
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description TEXT,
|
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
|
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is_public BOOLEAN DEFAULT true,
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photo_count INTEGER DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP
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);
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|
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-- 创建照片标签关联表（多对多）
|
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CREATE TABLE photo_tags (
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id SERIAL PRIMARY KEY,
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photo_id INTEGER NOT NULL REFERENCES photos(id) ON DELETE CASCADE,
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tag_id INTEGER NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
|
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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UNIQUE(photo_id, tag_id)
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);
|
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|
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-- 创建相册标签关联表（多对多）
|
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CREATE TABLE album_tags (
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id SERIAL PRIMARY KEY,
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album_id INTEGER NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
|
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tag_id INTEGER NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
|
||||
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
|
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UNIQUE(album_id, tag_id)
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);
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-- 创建标签表索引
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CREATE INDEX idx_tags_user_id ON tags(user_id);
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CREATE INDEX idx_tags_slug ON tags(slug);
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CREATE INDEX idx_tags_is_public ON tags(is_public);
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CREATE INDEX idx_tags_created_at ON tags(created_at);
|
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CREATE INDEX idx_tags_photo_count ON tags(photo_count);
|
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CREATE INDEX idx_tags_deleted_at ON tags(deleted_at) WHERE deleted_at IS NOT NULL;
|
||||
|
||||
-- 创建照片标签关联表索引
|
||||
CREATE INDEX idx_photo_tags_photo_id ON photo_tags(photo_id);
|
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CREATE INDEX idx_photo_tags_tag_id ON photo_tags(tag_id);
|
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CREATE INDEX idx_photo_tags_created_at ON photo_tags(created_at);
|
||||
|
||||
-- 创建相册标签关联表索引
|
||||
CREATE INDEX idx_album_tags_album_id ON album_tags(album_id);
|
||||
CREATE INDEX idx_album_tags_tag_id ON album_tags(tag_id);
|
||||
CREATE INDEX idx_album_tags_created_at ON album_tags(created_at);
|
||||
|
||||
-- 添加更新时间触发器
|
||||
CREATE TRIGGER update_tags_updated_at BEFORE UPDATE ON tags
|
||||
FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
|
||||
|
||||
-- 添加 slug 自动生成触发器
|
||||
CREATE OR REPLACE FUNCTION generate_tag_slug()
|
||||
RETURNS TRIGGER AS $$
|
||||
BEGIN
|
||||
IF NEW.slug IS NULL OR NEW.slug = '' THEN
|
||||
NEW.slug = lower(regexp_replace(NEW.name, '[^a-zA-Z0-9]+', '-', 'g'));
|
||||
NEW.slug = trim(both '-' from NEW.slug);
|
||||
|
||||
-- 确保 slug 唯一
|
||||
DECLARE
|
||||
counter INTEGER := 0;
|
||||
base_slug VARCHAR(255);
|
||||
BEGIN
|
||||
base_slug := NEW.slug;
|
||||
WHILE EXISTS (SELECT 1 FROM tags WHERE slug = NEW.slug AND id != COALESCE(NEW.id, 0)) LOOP
|
||||
counter := counter + 1;
|
||||
NEW.slug := base_slug || '-' || counter;
|
||||
END LOOP;
|
||||
END;
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
END;
|
||||
$$ language 'plpgsql';
|
||||
|
||||
CREATE TRIGGER generate_tags_slug BEFORE INSERT OR UPDATE ON tags
|
||||
FOR EACH ROW EXECUTE FUNCTION generate_tag_slug();
|
||||
|
||||
-- 创建标签计数更新触发器
|
||||
CREATE OR REPLACE FUNCTION update_tag_photo_count()
|
||||
RETURNS TRIGGER AS $$
|
||||
BEGIN
|
||||
IF TG_OP = 'INSERT' THEN
|
||||
UPDATE tags SET photo_count = photo_count + 1 WHERE id = NEW.tag_id;
|
||||
RETURN NEW;
|
||||
ELSIF TG_OP = 'DELETE' THEN
|
||||
UPDATE tags SET photo_count = photo_count - 1 WHERE id = OLD.tag_id;
|
||||
RETURN OLD;
|
||||
END IF;
|
||||
RETURN NULL;
|
||||
END;
|
||||
$$ language 'plpgsql';
|
||||
|
||||
CREATE TRIGGER trigger_update_tag_photo_count
|
||||
AFTER INSERT OR DELETE ON photo_tags
|
||||
FOR EACH ROW EXECUTE FUNCTION update_tag_photo_count();
|
||||
|
||||
-- 插入默认标签
|
||||
INSERT INTO tags (name, description, slug, user_id, color, is_public)
|
||||
SELECT
|
||||
'自然' as name,
|
||||
'自然风光、植物、动物等自然主题' as description,
|
||||
'nature' as slug,
|
||||
1 as user_id,
|
||||
'#10B981' as color,
|
||||
true as is_public
|
||||
WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
|
||||
|
||||
INSERT INTO tags (name, description, slug, user_id, color, is_public)
|
||||
SELECT
|
||||
'城市' as name,
|
||||
'城市景观、建筑、街道等城市主题' as description,
|
||||
'city' as slug,
|
||||
1 as user_id,
|
||||
'#3B82F6' as color,
|
||||
true as is_public
|
||||
WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
|
||||
|
||||
INSERT INTO tags (name, description, slug, user_id, color, is_public)
|
||||
SELECT
|
||||
'黑白' as name,
|
||||
'黑白摄影作品' as description,
|
||||
'black-white' as slug,
|
||||
1 as user_id,
|
||||
'#6B7280' as color,
|
||||
true as is_public
|
||||
WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
|
||||
|
||||
INSERT INTO tags (name, description, slug, user_id, color, is_public)
|
||||
SELECT
|
||||
'夜景' as name,
|
||||
'夜晚拍摄的照片' as description,
|
||||
'night' as slug,
|
||||
1 as user_id,
|
||||
'#1F2937' as color,
|
||||
true as is_public
|
||||
WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
|
||||
|
||||
INSERT INTO tags (name, description, slug, user_id, color, is_public)
|
||||
SELECT
|
||||
'日出日落' as name,
|
||||
'日出、日落、黄金时段拍摄' as description,
|
||||
'sunrise-sunset' as slug,
|
||||
1 as user_id,
|
||||
'#F59E0B' as color,
|
||||
true as is_public
|
||||
WHERE EXISTS (SELECT 1 FROM users WHERE id = 1);
|
||||
|
||||
-- +migrate Down
|
||||
|
||||
DROP TRIGGER IF EXISTS trigger_update_tag_photo_count ON photo_tags;
|
||||
DROP FUNCTION IF EXISTS update_tag_photo_count();
|
||||
DROP TRIGGER IF EXISTS generate_tags_slug ON tags;
|
||||
DROP FUNCTION IF EXISTS generate_tag_slug();
|
||||
DROP TRIGGER IF EXISTS update_tags_updated_at ON tags;
|
||||
DROP TABLE IF EXISTS album_tags;
|
||||
DROP TABLE IF EXISTS photo_tags;
|
||||
DROP TABLE IF EXISTS tags;
|
||||
111
backend/migrations/006_add_foreign_keys.sql
Normal file
111
backend/migrations/006_add_foreign_keys.sql
Normal file
@ -0,0 +1,111 @@
|
||||
-- +migrate Up
|
||||
|
||||
-- 添加照片表的外键约束
|
||||
ALTER TABLE photos
|
||||
ADD CONSTRAINT fk_photos_album_id
|
||||
FOREIGN KEY (album_id) REFERENCES albums(id) ON DELETE SET NULL;
|
||||
|
||||
ALTER TABLE photos
|
||||
ADD CONSTRAINT fk_photos_category_id
|
||||
FOREIGN KEY (category_id) REFERENCES categories(id) ON DELETE SET NULL;
|
||||
|
||||
-- 添加相册表的外键约束（如果还没有的话）
|
||||
-- 这些约束在创建相册表时可能已经存在，这里做一个保险
|
||||
|
||||
-- 添加一些有用的触发器和函数
|
||||
|
||||
-- 创建照片计数更新触发器（用于相册和分类）
|
||||
CREATE OR REPLACE FUNCTION update_photo_counts()
|
||||
RETURNS TRIGGER AS $$
|
||||
BEGIN
|
||||
IF TG_OP = 'INSERT' THEN
|
||||
-- 更新相册照片数量
|
||||
IF NEW.album_id IS NOT NULL THEN
|
||||
UPDATE albums SET photo_count = photo_count + 1 WHERE id = NEW.album_id;
|
||||
END IF;
|
||||
-- 更新分类照片数量
|
||||
IF NEW.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET photo_count = photo_count + 1 WHERE id = NEW.category_id;
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
ELSIF TG_OP = 'DELETE' THEN
|
||||
-- 更新相册照片数量
|
||||
IF OLD.album_id IS NOT NULL THEN
|
||||
UPDATE albums SET photo_count = photo_count - 1 WHERE id = OLD.album_id;
|
||||
END IF;
|
||||
-- 更新分类照片数量
|
||||
IF OLD.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET photo_count = photo_count - 1 WHERE id = OLD.category_id;
|
||||
END IF;
|
||||
RETURN OLD;
|
||||
ELSIF TG_OP = 'UPDATE' THEN
|
||||
-- 处理相册变更
|
||||
IF OLD.album_id IS DISTINCT FROM NEW.album_id THEN
|
||||
IF OLD.album_id IS NOT NULL THEN
|
||||
UPDATE albums SET photo_count = photo_count - 1 WHERE id = OLD.album_id;
|
||||
END IF;
|
||||
IF NEW.album_id IS NOT NULL THEN
|
||||
UPDATE albums SET photo_count = photo_count + 1 WHERE id = NEW.album_id;
|
||||
END IF;
|
||||
END IF;
|
||||
-- 处理分类变更
|
||||
IF OLD.category_id IS DISTINCT FROM NEW.category_id THEN
|
||||
IF OLD.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET photo_count = photo_count - 1 WHERE id = OLD.category_id;
|
||||
END IF;
|
||||
IF NEW.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET photo_count = photo_count + 1 WHERE id = NEW.category_id;
|
||||
END IF;
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
END IF;
|
||||
RETURN NULL;
|
||||
END;
|
||||
$$ language 'plpgsql';
|
||||
|
||||
-- 创建触发器
|
||||
CREATE TRIGGER trigger_update_photo_counts
|
||||
AFTER INSERT OR UPDATE OR DELETE ON photos
|
||||
FOR EACH ROW EXECUTE FUNCTION update_photo_counts();
|
||||
|
||||
-- 创建相册计数更新触发器（用于分类）
|
||||
CREATE OR REPLACE FUNCTION update_album_counts()
|
||||
RETURNS TRIGGER AS $$
|
||||
BEGIN
|
||||
IF TG_OP = 'INSERT' THEN
|
||||
IF NEW.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET album_count = album_count + 1 WHERE id = NEW.category_id;
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
ELSIF TG_OP = 'DELETE' THEN
|
||||
IF OLD.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET album_count = album_count - 1 WHERE id = OLD.category_id;
|
||||
END IF;
|
||||
RETURN OLD;
|
||||
ELSIF TG_OP = 'UPDATE' THEN
|
||||
IF OLD.category_id IS DISTINCT FROM NEW.category_id THEN
|
||||
IF OLD.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET album_count = album_count - 1 WHERE id = OLD.category_id;
|
||||
END IF;
|
||||
IF NEW.category_id IS NOT NULL THEN
|
||||
UPDATE categories SET album_count = album_count + 1 WHERE id = NEW.category_id;
|
||||
END IF;
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
END IF;
|
||||
RETURN NULL;
|
||||
END;
|
||||
$$ language 'plpgsql';
|
||||
|
||||
CREATE TRIGGER trigger_update_album_counts
|
||||
AFTER INSERT OR UPDATE OR DELETE ON albums
|
||||
FOR EACH ROW EXECUTE FUNCTION update_album_counts();
|
||||
|
||||
-- +migrate Down
|
||||
|
||||
DROP TRIGGER IF EXISTS trigger_update_album_counts ON albums;
|
||||
DROP FUNCTION IF EXISTS update_album_counts();
|
||||
DROP TRIGGER IF EXISTS trigger_update_photo_counts ON photos;
|
||||
DROP FUNCTION IF EXISTS update_photo_counts();
|
||||
ALTER TABLE photos DROP CONSTRAINT IF EXISTS fk_photos_category_id;
|
||||
ALTER TABLE photos DROP CONSTRAINT IF EXISTS fk_photos_album_id;
|
||||
Reference in New Issue
Block a user