diff --git a/front_end/src/classes.tsx b/front_end/src/classes.tsx
index 251e279..52266bb 100644
--- a/front_end/src/classes.tsx
+++ b/front_end/src/classes.tsx
@@ -12,7 +12,7 @@ export class Ligne{
 
 export class User{
     id!: number;
-    keycloakId!: String;
+    keycloakId!: string;
     nom!: string;
     prenom!:string;
     email!: string;
@@ -32,6 +32,16 @@ export class Admin extends User{
         this.email = ""; //TODO
     }
 
+    toDTO():AdminDTO{
+        const dto:AdminDTO = {
+            id: this.id,
+            id_keycloak: this.keycloakId,
+            name: this.nom,
+            prenom: this.prenom,
+        };
+        return dto;
+    }
+
 }
 
 export class Athlete extends User{
@@ -53,6 +63,21 @@ export class Athlete extends User{
         this.sessionsID = dto?.sessionIds ?? [];
         this.sessions = [];
     }
+
+        toDTO():AthleteDTO{
+            const dto:AthleteDTO = {
+                id: this.id,
+                id_keycloak: this.keycloakId,
+                name: this.nom,
+                prenom: this.prenom,
+                categorie: "",
+                niveau: "",
+                groupes: this.groupes,
+                sessionIds: this.sessionsID,
+            };
+        return dto;
+    }
+
 }
 
 export class Coach extends User{
@@ -73,6 +98,19 @@ export class Coach extends User{
         this.sessionsID = dto?.sessionIds ?? [];
         this.sessions = [];
     }
+
+    toDTO():CoachDTO{
+            const dto:CoachDTO = {
+                id: this.id,
+                id_keycloak: this.keycloakId,
+                name: this.nom,
+                prenom: this.prenom,
+                sessionIds: this.sessionsID,
+            };
+        return dto;
+    }
+
+
 }
 
 export class Session{
diff --git a/front_end/src/components/edt.tsx b/front_end/src/components/edt.tsx
index e3ce908..db53199 100644
--- a/front_end/src/components/edt.tsx
+++ b/front_end/src/components/edt.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useState } from "react"
-import { getUserTest, Session, User } from "../classes"
+import { Athlete, Coach, Session} from "../classes"
 import { useLocalData } from "../context/useLocalData"
 import './style/edt.css';
 import {updateSessionsOfUserAPI } from "../requetes";
@@ -41,11 +41,13 @@ export const EDT =() =>{
         var maxDate = getNextDay(date,6)
 
         var newWeek: Session[] = []
-        user.sessions.forEach(session => {
-            if((session.creneau >= date && session.creneau <= maxDate && !session.isRecurrent) || (session.isRecurrent && session.creneau<maxDate)){
-                newWeek.push(session);
-            }
-        });
+        if(user instanceof Athlete || user instanceof Coach){
+            user.sessions.forEach(session => {
+                if((session.creneau >= date && session.creneau <= maxDate && !session.isRecurrent) || (session.isRecurrent && session.creneau<maxDate)){
+                    newWeek.push(session);
+                }
+            });
+        }
         setSessions(newWeek);
     }
 
diff --git a/front_end/src/components/login.tsx b/front_end/src/components/login.tsx
index e01f7f0..3633a6c 100644
--- a/front_end/src/components/login.tsx
+++ b/front_end/src/components/login.tsx
@@ -4,6 +4,7 @@ import { Athlete, User } from '../classes';
 import { useLocalData } from '../context/useLocalData';
 import { postAthlete } from '../requetes';
 import { clearAuthToken, setAuthToken } from '../api';
+import { AthleteDTO } from '../classesDTO';
 
 export const Login =() =>{
     const {user,setUser} = useLocalData()
@@ -11,12 +12,23 @@ export const Login =() =>{
 
     useEffect(() => {
         const syncAndLoadUser = async () => {
-            const newAthlete:Athlete = new Athlete()
-
-            const athlete:Athlete = await postAthlete(newAthlete)
-            
-            setAuthToken(keycloak.token);
-            setUser(athlete);
+            if (keycloak.authenticated && keycloak.token && keycloak.tokenParsed) {
+                try {
+                    const newAthlete: Athlete = new Athlete();
+                    newAthlete.keycloakId = keycloak.tokenParsed.sub || "";
+                    newAthlete.email = keycloak.tokenParsed.email || "";
+                    newAthlete.nom = keycloak.tokenParsed.family_name || "";
+                    newAthlete.prenom = keycloak.tokenParsed.given_name || "";
+                    
+                    const newAthleteDTO: AthleteDTO =newAthlete.toDTO();
+                    setAuthToken(keycloak.token);
+                    const athlete: Athlete = await postAthlete(newAthlete);
+                    setUser(athlete);
+                    } catch (error) {
+                        console.error("Error :", error);
+                    }
+                }
+            };
             /*postAthlete
             if (keycloak.authenticated && keycloak.token) {
                 const tokenParsed = keycloak.tokenParsed;
@@ -44,7 +56,7 @@ export const Login =() =>{
                     console.error("Sync fetch failed:", error);
                 }
             }*/
-        };
+        
 
         syncAndLoadUser();
     }, [keycloak.authenticated, keycloak.token, setUser]);
diff --git a/front_end/src/components/test_app.tsx b/front_end/src/components/test_app.tsx
deleted file mode 100644
index 1e13241..0000000
--- a/front_end/src/components/test_app.tsx
+++ /dev/null
@@ -1,20 +0,0 @@
-import React, { useState } from "react";
-import { getUserTest, User, Session } from "../classes";
-import RessourcePanel from "./ressourcePanel";
-import { LocalDataContext } from "../context/LocalDataContext";
-
-export default function TestApp() {
-  const initialUser = getUserTest();
-  initialUser.role = "Athlete"; // Change role here for testing
-  const [user, setUser] = useState<User>(initialUser);
-  const [sessions, setSessions] = useState<Session[]>(initialUser.sessions || []);
-  const [users, setUsers] = useState<User[]>([initialUser]);
-
-  return (
-    <LocalDataContext.Provider value={{ user, setUser, sessions, setSessions, users, setUsers }}>
-      <h1>Test Utilisateur</h1>
-      <div>Nom: {String(user.nom)}</div>
-      <RessourcePanel />
-    </LocalDataContext.Provider>
-  );
-}
diff --git a/front_end/src/requetes.tsx b/front_end/src/requetes.tsx
index 68f4b52..3e969bf 100644
--- a/front_end/src/requetes.tsx
+++ b/front_end/src/requetes.tsx
@@ -128,7 +128,7 @@ export async function postActivityAPI(session: Session, activity: Activite){
 
 export async function postAthlete(athlete: Athlete):Promise<Athlete>{
    try {
-        const response = await api.post<Athlete>("/athlete/create/",athlete);
+        const response = await api.post<Athlete>("/athlete/create/",athlete.toDTO);
         console.log(response);
         return response.data;
     } catch (error) {