[feat] Prevent license key from being embedded in view

app/assets/javascripts/fullcalendar.js.erb

@@ -0,0 +1,28 @@
+$( document ).ready(function() {
+    let calendarEl = document.getElementById('vert-schedule-full-calendar');
+    if (!calendarEl) return; //check that we need a vertical schedule
+    let fullcalData = $('#fullcalendar');
+
+    let license_key = "<%= Rails.configuration.fullcalendar[:license_key] %>";
+
+    var calendar = new FullCalendar.Calendar(calendarEl, {
+      schedulerLicenseKey: license_key,
+      nowIndicator: true,
+      now: fullcalData.data('now'),
+      expandRows: true,
+      allDaySlot: false,
+      slotMinTime: fullcalData.data('startHour') + ':00:00',
+      slotMaxTime: fullcalData.data('endHour') + ':00:00',
+      validRange: {
+        start: fullcalData.data('startDate'),
+        end: fullcalData.data('endDate')
+      },
+      timeZone: fullcalData.data('timezone'),
+      initialDate: fullcalData.data('day'),
+      initialView: 'resourceTimeGridDay',
+      resources: fullcalData.data('rooms'),
+      events: fullcalData.data('events')
+    });
+
+    calendar.render();
+});