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| import React, { useState } from 'React';
import { useQuery, useMutation, useQueryClient } from '@tanstack/React-query';
getUsers: async () => {
const response = await fetch('/API/users');
if (!response.ok) throw new Error('Failed to fetch users');
return response.Json();
},
getUserById: async (id) => {
const response = await fetch(`/API/users/${id}`);
if (!response.ok) throw new Error('Failed to fetch user');
return response.Json();
},
createUser: async (userData) => {
const response = await fetch('/API/users', {
method: 'POST',
headers: { 'Content-Type': 'application/Json' },
body: Json.stringify(userData)
});
if (!response.ok) throw new Error('Failed to create user');
return response.Json();
},
updateUser: async (id, userData) => {
const response = await fetch(`/API/users/${id}`, {
method: 'PUT',
headers: { 'Content-Type': 'application/Json' },
body: Json.stringify(userData)
});
if (!response.ok) throw new Error('Failed to update user');
return response.Json();
},
deleteUser: async (id) => {
const response = await fetch(`/API/users/${id}`, { method: 'DELETE' });
if (!response.ok) throw new Error('Failed to delete user');
return response.Json();
}
};
const queryClient = useQueryClient();
const [editingUser, setEditingUser] = useState(null);
data: users,
isLoading,
isError,
error
} = useQuery({
queryKey: ['users'],
queryFn: userService.getUsers,
staleTime: 1000 * 60 * 5,
});
mutationFn: userService.deleteUser,
onSuccess: () => {
queryClient.invalidateQueries({ queryKey: ['users'] });
}
});
if (window.confirm('Are you sure you want to delete this user?')) {
deleteMutation.mutate(userId);
}
};
if (isLoading) return <div>Loading users...</div>;
if (isError) return <div>Error: {error.message}</div>;
return (
<div>
<h2>User Management</h2>
<table>
<thead>
<tr>
<th>ID</th>
<th>Name</th>
<th>Email</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
{users?.map(user => (
<tr key={user.id}>
<td>{user.id}</td>
<td>{user.name}</td>
<td>{user.email}</td>
<td>
<button onClick={() => setEditingUser(user)}>
Edit
</button>
<button
onClick={() => handleDelete(user.id)}
disabled={deleteMutation.isPending}
style={{ marginLeft: '5px' }}
>
{deleteMutation.isPending ? 'Deleting...' : 'Delete'}
</button>
</td>
</tr>
))}
</tbody>
</table>
{editingUser && (
<EditUserModal
user={editingUser}
onClose={() => setEditingUser(null)}
/>
)}
</div>
);
}
const queryClient = useQueryClient();
const updateMutation = useMutation({
mutationFn: (userData) => userService.updateUser(user.id, userData),
onSuccess: () => {
queryClient.invalidateQueries({ queryKey: ['users'] });
queryClient.invalidateQueries({ queryKey: ['user', user.id] });
onClose();
}
});
const handleSubmit = (e) => {
e.preventDefault();
const formData = new FormData(e.target);
const userData = {
name: formData.get('name'),
email: formData.get('email')
};
updateMutation.mutate(userData);
};
return (
<div style={{
position: 'fixed',
top: 0,
left: 0,
right: 0,
bottom: 0,
backgroundColor: 'rgba(0,0,0,0.5)',
display: 'flex',
alignItems: 'center',
justifyContent: 'center'
}}>
<div style={{ backgroundColor: 'white', padding: '20px', borderRadius: '8px' }}>
<h3>Edit User</h3>
<form onSubmit={handleSubmit}>
<div>
<label>Name:</label>
<input name="name" defaultValue={user.name} required />
</div>
<div>
<label>Email:</label>
<input name="email" defaultValue={user.email} required />
</div>
<button type="submit" disabled={updateMutation.isPending}>
{updateMutation.isPending ? 'Saving...' : 'Save'}
</button>
<button type="button" onClick={onClose} style={{ marginLeft: '10px' }}>
Cancel
</button>
</form>
{updateMutation.isError && (
<div style={{ color: 'red' }}>
Error: {updateMutation.error.message}
</div>
)}
</div>
</div>
);
}
|
