extract(epoch FROM now() - query_start) returns numeric (decimal) in PostgreSQL, but the result was read as f64 via r.get(4). tokio-postgres has no FromSql<f64> impl for the numeric type, so get_db_status panicked at runtime with 'error deserializing column 4' (HTTP 500). Cast to ::double precision (float8) to match query_duration_secs: Option<f64>. Audited the remaining column mappings in status.rs to rule out further type mismatches — all sound: reltuples::bigint->i64, native bigint size columns->i64, last_vacuum/last_analyze timestamptz->DateTime<Utc> (chrono feature enabled), schema_migrations.version TEXT->String, count(*)::int->i32 (fixed previously).
Yggdrasil
基于 Dioxus 0.7 的全栈博客系统,Rust 单一代码库同时编译为 WASM 前端和原生服务端。
技术栈
- 框架: Dioxus 0.7 (fullstack)
- 数据库: PostgreSQL + tokio-postgres
- 样式: Tailwind CSS v4
- 密码: Argon2
- 会话: UUID token + cookie
功能
- 邮箱注册 / 登录(单管理员模式,首次注册后关闭)
- 会话管理与自动过期清理
- 暗色 / 亮色主题切换
- 后台文章撰写(Tiptap Markdown 编辑器)
- 文章归档与标签浏览
开发
依赖 Rust 1.95+、wasm32 目标、dx CLI、tailwindcss CLI v4 和 PostgreSQL。
# 配置数据库
DATABASE_URL=postgres://postgres:postgres@localhost:5432/yggdrasil
# 运行迁移(自动创建数据库并按顺序执行 migrations/ 下所有 SQL)
./migrate.sh
# 启动开发服务器
make dev
构建
make build
生产部署
生产环境必须前置反向代理(nginx/Caddy)做 TLS 终结,并设置 APP_BASE_URL、
COOKIE_SECURE=true、TRUSTED_PROXY_COUNT=1。详见 部署指南。
Description
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