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MetaLab/internal/common/helper.go
Victor_Jay a62039e6bb fix: 登录/注册支持 redirect 参数,未登录跳转自动携带来源页
- login.js/register.js 登录成功后优先跳转 redirect 参数指定页面
- 新增 common.RedirectToLogin 辅助函数,自动携带当前路径
- 替换所有 9 处硬编码 /auth/login 重定向
2026-05-31 01:23:09 +08:00

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package common
import (
"fmt"
"net/http"
"net/url"
"regexp"
"metazone.cc/metalab/internal/model"
"github.com/gin-gonic/gin"
)
// mdImageRe 匹配 Markdown 图片语法 ![alt](url)
var mdImageRe = regexp.MustCompile(`!\[.*?\]\((.*?)\)`)
// ExtractFirstImage 从 Markdown 正文提取第一张图片 URL
func ExtractFirstImage(md string) string {
match := mdImageRe.FindStringSubmatch(md)
if len(match) > 1 {
return match[1]
}
return ""
}
// BuildPageData 构建页面模板数据,自动注入登录状态、站点信息与 CSRF token
func BuildPageData(c *gin.Context, extra gin.H) gin.H {
data := gin.H{}
for k, v := range extra {
data[k] = v
}
if username, exists := c.Get("username"); exists {
data["IsLoggedIn"] = true
data["Username"] = username
}
// 注入 CSRF token由 CSRF 中间件设置到上下文中)
if token, exists := c.Get("csrf_token"); exists {
data["CSRFToken"] = token
}
// 注入站点信息(由 InjectSiteInfo 中间件设置)
injectSiteInfo(c, data)
// 注入管理入口权限moderator 及以上可看到页脚管理面板链接)
if role, exists := c.Get("role"); exists {
data["CanAccessAdmin"] = model.HasMinRole(role.(string), model.RoleModerator)
data["IsOwner"] = model.HasMinRole(role.(string), model.RoleOwner)
}
// 注入维护状态
if isMaintenance, exists := c.Get("is_maintenance"); exists {
data["IsMaintenance"] = isMaintenance
}
return data
}
// BuildAdminPageData 构建管理后台模板数据
// 额外注入 UID、Role、CanManageUsers、CurrentPath 等权限信息
func BuildAdminPageData(c *gin.Context, extra gin.H) gin.H {
data := BuildPageData(c, extra)
data["IsAdmin"] = true
data["CurrentPath"] = c.Request.URL.Path
if uid, exists := c.Get("uid"); exists {
data["UID"] = uid
}
if role, exists := c.Get("role"); exists {
roleStr := role.(string)
data["Role"] = roleStr
if name, ok := model.RoleDisplayNames[roleStr]; ok {
data["RoleDisplayName"] = name
} else {
data["RoleDisplayName"] = roleStr
}
data["CanManageUsers"] = model.HasMinRole(roleStr, model.RoleAdmin)
data["CanManageAudits"] = model.HasMinRole(roleStr, model.RoleAdmin)
data["CanManageSettings"] = model.HasMinRole(roleStr, model.RoleOwner)
data["IsOwner"] = model.HasMinRole(roleStr, model.RoleOwner)
}
return data
}
// RedirectToLogin 重定向到登录页,携带当前页面路径作为 redirect 参数
func RedirectToLogin(c *gin.Context) {
returnURL := url.QueryEscape(c.Request.URL.Path)
if c.Request.URL.RawQuery != "" {
returnURL = url.QueryEscape(c.Request.URL.Path + "?" + c.Request.URL.RawQuery)
}
c.Redirect(http.StatusFound, fmt.Sprintf("/auth/login?redirect=%s", returnURL))
c.Abort()
}
// injectSiteInfo 从 context 注入站点展示信息
func injectSiteInfo(c *gin.Context, data gin.H) {
if framework, exists := c.Get("site_framework"); exists {
data["Framework"] = framework
}
if copyrightStart, exists := c.Get("site_copyright_start"); exists {
data["CopyrightStart"] = copyrightStart
}
}