add markers

app/assets/images/map-marker.svg

+<svg width="18" height="26" viewBox="0 0 18 26" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M17.5676 8.7551C17.5676 13.5904 8.78378 26 8.78378 26C8.78378 26 0 13.5904 0 8.7551C0 3.91979 3.93263 0 8.78378 0C13.6349 0 17.5676 3.91979 17.5676 8.7551Z" fill="black"/>
+<circle cx="9.13516" cy="8.43252" r="4.21622" fill="white"/>
+</svg>

app/views/admin/communication/blocks/_preview.html.erb

+<% is_leaflet_needed = true; %>
+
 <% about.blocks.published.ordered.each do |block| %>
   <% @block = block %>
   <%= render "admin/communication/blocks/templates/#{@block.template_kind}/preview" %>
-<% end %>
\ No newline at end of file
+  <% if block.template_kind == "partners" && block.data[:layout] == "map" %>
+    <% is_leaflet_needed = true; %>
+  <% end %>
+<% end %>
+
+<% if is_leaflet_needed %>
+  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.3/dist/leaflet.css"
+        integrity="sha256-kLaT2GOSpHechhsozzB+flnD+zUyjE2LlfWPgU04xyI="
+        crossorigin=""/>
+  <script src="https://unpkg.com/leaflet@1.9.3/dist/leaflet.js"
+          integrity="sha256-WBkoXOwTeyKclOHuWtc+i2uENFpDZ9YPdf5Hf+D7ewM="
+          crossorigin=""></script>
+<% end %>

app/views/admin/communication/blocks/templates/partners/_preview.html.erb

 <%
-  $class = "block block-partners"
+  class_name = "block block-partners"
   unless @block.title.blank?
-    $class += " block-with-title"
+    class_name += " block-with-title"
   end
-  $class += " block-partners--" + @block.template.layout
+  class_name += " block-partners--" + @block.template.layout
 %>
 
-
 <section class="<%= class_name %>">
   <div class="container">
     <div class="block-content">
@@ -42,11 +41,10 @@
             </article>
           <% end %>
         </div>
-
       <% else %>
         <div class="map" id="map">
           <% @block.template.elements.each do |element| %>
-            <article class="organization">
+            <article class="organization" data-latitude="<%= element.organization.latitude %>" data-longitude="<%= element.organization.longitude %>">
               <h3>
                 <% if element.best_url %>
                   <a href="<%= element.best_url %>" target="_blank">
@@ -63,6 +61,6 @@
           <% end %>
         </div>
       <% end %>
-      
+    </div>
   </div>
-</section>
\ No newline at end of file
+</section>