changing posts to reference clerkUserID rather than id in mongodb

app/(tabs)/home.tsx

@@ -1,8 +1,10 @@
+import { useUser } from '@clerk/clerk-react'
 import { CameraView, useCameraPermissions } from 'expo-camera'
 import React, { useRef, useState } from 'react'
 import { Button, Image, Modal, StyleSheet, Text, TextInput, TouchableOpacity, View } from 'react-native'
 
 export default function App() {
+    const { user } = useUser()
     const [permission, requestPermission] = useCameraPermissions()
     const [photo, setPhoto] = useState('')
     const [address, setAddress] = useState('')
@@ -35,7 +37,7 @@ export default function App() {
                 'Content-Type': 'application/json'
             },
             body: JSON.stringify({
-                userID: '6883ddb2640ebaa1a12e3791',
+                clerkUserID: user?.id,
                 date: new Date(),
                 photo,
                 address,

app/(tabs)/profile.tsx

@@ -23,7 +23,7 @@ export default function PostsScreen() {
     )
 
     async function fetchData() {
-        fetch(`http://localhost:3000/api/v1/posts/user/6883ddb2640ebaa1a12e3791`)
+        fetch(`http://localhost:3000/api/v1/posts/user/${user?.id}`)
             .then((res) => res.json())
             .then((json) => {
                 console.log(json)