certificatelib/dto/certificate_data.rs
use chrono::NaiveDateTime;
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize, Debug, Clone)]
#[serde(rename_all = "camelCase")]
pub struct CertificateData {
pub course_name: Option<String>,
pub user_name: Option<String>,
pub user_avatar: Option<String>,
pub org_logo: Option<String>,
pub org_name: Option<String>,
pub date: Option<NaiveDateTime>,
}