optional portfolio sincedate

pages/portfolio.js

@@ -197,14 +197,14 @@ export default class PortfolioPage extends Component {
                   </div>
                   <div className="two-column modal-portfolio-content">
                     <div className="modal-portfolio-detail two-column-reverse-right">
-                      <div className="modal-portfolio-date">
+                      {selected.sinceDate?<div className="modal-portfolio-date">
                         {en === null ? '' : en ? gaorongTimeEN : gaorongTime}
                         <div className="modal-portfolio-timestr">
                           {daySince(selected.sinceDate) +
                             ' ' +
                             (en === null ? '' : en ? dayEN : day)}
                         </div>
-                      </div>
+                      </div>:''}
                       <div className="modal-portfolio-date modal-portfolio-date2">
                         {en === null ? '' : en ? officialSiteEN : officialSite}
                         <div className="modal-portfolio-timestr">

static/admin/config.yml

@@ -164,7 +164,7 @@ collections:
             fields:
               - { label: "Name", name: "name", widget: "string" }
               - { label: "NameEN", name: "nameEN", widget: "string" }
-              - { label: "Since Date", name: "sinceDate", widget: "datetime" }
+              - { label: "Since Date", name: "sinceDate", widget: "datetime",required: false }
               - { label: "Description", name: "description", widget: "markdown" }
               - { label: "DescriptionEN", name: "descriptionEN", widget: "markdown" }
               - { label: "logo", name: "logo", widget: "image" }