All categories are shown in the list

src/main/resources/templates/upload.html

@@ -24,10 +24,9 @@
             <input type = "file" id = "fileInput" name = "file" accept="application/pdf">
 
             <label for="category">Select Category:</label>
-            <select id="category" name="category">
-                <option value="1.4 Chemical sciences">1.4 Chemical sciences</option>
-                <option value="1.5 Earth and related environmental sciences">1.5 Earth and related environmental sciences</option>
-                <option value="1.6 Biological sciences">1.6 Biological sciences</option>
+
+            <select id="category" name="category" >
+                <option th:each="c : ${categories}" th:value="${c.getId()}" th:text ="${c.getId() + ' ' + c.getName()}"></option>
             </select>
 
             <button type = "submit">Upload & Process the PDF</button>