ajout de Update et Delete et des formulaires de Update

src/components/CandidacyForm.jsx

 import React, { useState, useEffect } from "react";
+import { Navigate } from "react-router-dom";
 
 const CandidacyForm = () => {
   const [students, setStudents] = useState([]);
@@ -48,6 +49,10 @@ const CandidacyForm = () => {
       })
       .catch((err) => console.error("Error:", err));
   };
+  // Handle cancel button
+  const handleCancel = () => {
+    Navigate("/candidatures"); // Redirect back to candidacy list
+  };
 
   return (
     <div className="container mt-4">
@@ -111,9 +116,12 @@ const CandidacyForm = () => {
         </div>
 
         {/* Submit Button */}
-        <button type="submit" className="btn btn-primary">
-          Ajouter Candidature
-        </button>
+        <div className="d-flex gap-2">
+            <button type="submit" className="btn btn-primary">
+            Ajouter Candidature
+            </button>
+            <button type="button" className="btn btn-secondary" onClick={handleCancel}>Annuler</button>
+        </div>
       </form>
     </div>
   );