add alert when no there are any device selected

ereuse_devicehub/static/js/main_inventory.js

@@ -155,5 +155,7 @@ function export_file(type_file) {
     if (devices_id){
         var url = "/inventory/export/"+type_file+"/?ids="+devices_id;
         window.location.href = url;
+    } else {
+        $("#exportAlertModal").click();
     }
 }

ereuse_devicehub/templates/inventory/alert_export_error.html

@@ -0,0 +1,21 @@
+<div class="modal fade" id="exportErrorModal" tabindex="-1" style="display: none;" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title">Error export</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+
+        <div class="modal-body">
+          <p class="text-danger pol">
+              You need select first some device for use export file
+          </p>
+        </div>
+
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+        </div>
+
+    </div>
+  </div>
+</div>

ereuse_devicehub/templates/inventory/device_list.html

@@ -205,6 +205,7 @@
                     <i class="bi bi-reply"></i>
                     Exports
                 </button>
+                <span class="d-none" id="exportAlertModal" data-bs-toggle="modal" data-bs-target="#exportErrorModal"></span>
                 <ul class="dropdown-menu" aria-labelledby="btnExport">
                   <li>
                     <a href="javascript:export_file('devices')" class="dropdown-item">
@@ -372,6 +373,7 @@
 {% include "inventory/allocate.html" %}
 {% include "inventory/data_wipe.html" %}
 {% include "inventory/trade.html" %}
+{% include "inventory/alert_export_error.html" %}
 
 <!-- CDN -->
 <script src="https://cdn.jsdelivr.net/npm/simple-datatables@latest"></script>