找回密码

控制器新增
app/http/controllers/auth_controller.go

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// SendEmail 发送邮件表单
func (*AuthController) SendEmail(w http.ResponseWriter, r *http.Request) {
    view.RenderSimple(w, view.D{}, "auth.sendemail")
}

// DoSendEmail 发送邮件
func (*AuthController) DoSendEmail(w http.ResponseWriter, r *http.Request) {
    email := r.PostFormValue("email")
    // 1. 根据 Email 获取用户
    _user, err := user.GetByEmail(email)

    // 2. 如果出现错误
    var e error
    if err != nil {
        if err == gorm.ErrRecordNotFound {
            e = errors.New("账号不存在")
        } else {
            e = errors.New("内部错误，请稍后尝试")
        }
        view.RenderSimple(w, view.D{
            "Error":    e.Error(),
            "Email":    email,
        }, "auth.sendemail")
    } else {
        id := _user.ID
        // TODO: 发送带id链接邮件到邮箱
        w.WriteHeader(http.StatusOK)
        fmt.Fprint(w, "邮件发送成功，ID: "+strconv.FormatUint(id, 10))
    }
}

// ResetPassword 重置密码表单
func (*AuthController) ResetPassword(w http.ResponseWriter, r *http.Request) {
    id := route.GetRouteVariable("id", r)
    view.RenderSimple(w, view.D{
        "ID": id,
    }, "auth.reset")
}

// DoResetPassword 重置密码
func (*AuthController) DoResetPassword(w http.ResponseWriter, r *http.Request) {
    id := r.PostFormValue("id")
    _user, err := user.Get(id)
    if err != nil {
        if err == gorm.ErrRecordNotFound {
            w.WriteHeader(http.StatusNotFound)
            fmt.Fprint(w, "404 用户未找到")
        } else {
            logger.LogError(err)
            w.WriteHeader(http.StatusInternalServerError)
            fmt.Fprint(w, "500 服务器内部错误")
        }
    } else {
        password := r.PostFormValue("password")
        password_confirm := r.PostFormValue("password_confirm")
        errs := validateResetPasswordFormData(password, password_confirm)
        if len(errs) > 0 {
            view.RenderSimple(w, view.D{
                "Errors": errs,
                "Password": password,
                "PasswordConfirm": password_confirm,
            }, "auth.reset")
        } else {
            _user.Password = password
            rowsAffected, err := _user.Update()
            if err != nil {
                // 数据库错误
                w.WriteHeader(http.StatusInternalServerError)
                fmt.Fprint(w, "500 服务器内部错误")
                return
            }
            if rowsAffected > 0 {
                showURL := route.Name2URL("auth.login")
                http.Redirect(w, r, showURL, http.StatusFound)
            } else {
                fmt.Fprint(w, "您没有做任何更改！")
            }
        }
    }
}

func validateResetPasswordFormData(password string, password_confirm string) map[string][]string {
    errs := make(map[string][]string)
    if password == "" {
        errs["password"] = append(errs["password"], "密码为必填项")
    }
    if len(password) < 6 {
        errs["password"] = append(errs["password"], "密码长度需大于 6")
    }
    if password != password_confirm {
        errs["password_confirm"] = append(errs["password_confirm"], "两次输入密码不匹配！")
    }
    return errs
}

新增路由
routes/web.go

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r.HandleFunc("/auth/sendemail", auc.SendEmail).Methods("GET").Name("auth.sendemail")
    r.HandleFunc("/auth/dosendemail", auc.DoSendEmail).Methods("POST").Name("auth.dosendemail")
    r.HandleFunc("/auth/reset/{id:[0-9]+}", auc.ResetPassword).Methods("GET").Name("auth.reset")
    r.HandleFunc("/auth/doreset", auc.DoResetPassword).Methods("POST").Name("auth.doreset")

修改登录表单
resources/views/auth/login.gohtml
由

<a href="" class="text-sm text-muted float-right"><small>找回密码</small></a>

修改为

<a href="{{ RouteName2URL "auth.sendemail" }}" class="text-sm text-muted float-right"><small>找回密码</small></a>

创建填写邮件和重置密码的页面
resources/views/auth/reset.gohtml

{{define "title"}}
重置密码
{{end}}

{{define "main"}}
<div class="blog-post bg-white p-5 rounded shadow mb-4">
  <h3 class="mb-5 text-center">重置密码</h3>
  <form action="{{ RouteName2URL "auth.doreset" }}" method="post">
    <input type="hidden" name="id" value="{{ .ID }}" required="">
    <div class="form-group row mb-3">
      <label for="password" class="col-md-4 col-form-label text-md-right">密码</label>
      <div class="col-md-6">
        <input id="password" type="password" class="form-control {{if .Errors.password }}is-invalid {{end}}" name="password" value="{{ .Password }}" required="">
        {{ with .Errors.password }}
          {{ template "invalid-feedback" . }}
        {{ end }}
      </div>
    </div>
    <div class="form-group row mb-3">
      <label for="password-confirm" class="col-md-4 col-form-label text-md-right">确认密码</label>
      <div class="col-md-6">
        <input id="password-confirm" type="password" class="form-control {{if .Errors.password_confirm }}is-invalid {{end}}" name="password_confirm" value="{{ .PasswordConfirm }}" required="">
        {{ with .Errors.password_confirm }}
          {{ template "invalid-feedback" . }}
        {{ end }}
      </div>
    </div>
    <div class="form-group row mb-3 mb-0 mt-4">
      <div class="col-md-6 offset-md-4">
        <button type="submit" class="btn btn-primary">
          发送
        </button>
      </div>
    </div>
  </form>
</div>
<div class="mb-3">
  <a href="/" class="text-sm text-muted"><small>返回首页</small></a>
</div>
{{end}}

resources/views/auth/sendemail.gohtml

{{define "title"}}
发送邮件
{{end}}

{{define "main"}}
<div class="blog-post bg-white p-5 rounded shadow mb-4">
  <h3 class="mb-5 text-center">发送邮件</h3>
  <form action="{{ RouteName2URL "auth.dosendemail" }}" method="post">
    <div class="form-group row mb-3">
      <label for="email" class="col-md-4 col-form-label text-md-right">E-mail</label>
      <div class="col-md-6">
        <input id="email" type="email" class="form-control {{if .Error }}is-invalid {{end}}" name="email" value="{{ .Email }}" required="">
        {{ with .Error }}
          <div class="invalid-feedback">
              <p>{{ . }}</p>
          </div>
        {{ end }}
      </div>
    </div>
    <div class="form-group row mb-3 mb-0 mt-4">
      <div class="col-md-6 offset-md-4">
        <button type="submit" class="btn btn-primary">
          发送
        </button>
      </div>
    </div>
  </form>
</div>
<div class="mb-3">
  <a href="/" class="text-sm text-muted"><small>返回首页</small></a>
</div>
{{end}}

创建更新用户方法
app/models/user/crud.go

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// Update 更新用户
func (user *User) Update() (rowsAffected int64, err error) {
    result := model.DB.Save(&user)
    if err = result.Error; err != nil {
        logger.LogError(err)
        return 0, err
    }

    return result.RowsAffected, nil
}