我有兩個組件，一個 ListContact 和一個 ListSupplier。ListSupplier 是 ListContact 的子級。我的聯系人組件有一個顯示結果的表格。供應商組件在聯系組件上打開一個模式，從中進行選擇以更改第一個組件中表的結果。
const ListContact = () => {
const [contacts, setContacts] = useState([]);
...
//Populate contact table function
const getContact = async () => {
try {
const response = await fetch(`http://localhost:5000/contact/`);
const jsonData = await response.json();
setContacts(jsonData);
} catch (err) {
console.log(err.message);
}
}
//Populate contact table function with supplier id
const getSupplierContacts = async (supplier_id) => {
try {
const response = await fetch(`http://localhost:5000/contact_supplier/${supplier_id}`);
const jsonData = await response.json();
setContacts(jsonData);
} catch (err) {
console.log(err.message);
}
}
useEffect(() => {
getContact();
}, []);
return <Fragment>
<ListSuppliers/>
<table className="table mt-5">
<thead>
<tr>
<th>Contact Name</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
{contacts.map(contact => (
<tr key={contact.contact_id}>
<td>{contact.contact_name}</td>
<td><EditContact contact={contact}/></td>
<td><button className="btn btn-danger" onClick={()=> deleteContact(contact.contact_id)}>Delete</button></td>
</tr>
))}
</tbody>
</table>
</Fragment>
特別是我想使用 ListContact 中的 getSupplierContact 方法。
const ListSuppliers = () => {
const [suppliers, setSuppliers] = useState([]);
...
useEffect(() => {
getSuppliers();
}, []);
return <Fragment>
<table className="table mt-5">
<thead>
<tr>
<th>Supplier Name</th>
<th>Choose Supplier</th>
</tr>
</thead>
<tbody>
{suppliers.map(supplier => (
<tr key={supplier.supplier_id}>
<td>{supplier.supplier_name}</td>
<td><button className="btn btn-info" onClick={()=> getSupplierContacts(supplier.supplier_id)}>Choose Supplier</button></td>
</tr>
))}
</tbody>
</table>
</Fragment>
非常感謝任何幫助！讓我知道我是否可以向 OP 添加更多資訊
//Attempt at solution
<button className="btn btn-info" onClick={()=> getSupplierContacts(supplier.supplier_id)}>Choose Supplier</button>
uj5u.com熱心網友回復：
實際上很簡單，您在呼叫 listSuppliers 時將 props 作為物件傳遞
const ListContact = () => {
const [contacts, setContacts] = useState([]);
...
//Populate contact table function
const getContact = async () => {
try {
const response = await fetch(`http://localhost:5000/contact/`);
const jsonData = await response.json();
setContacts(jsonData);
} catch (err) {
console.log(err.message);
}
}
//Populate contact table function with supplier id
const getSupplierContacts = async (supplier_id) => {
try {
const response = await fetch(`http://localhost:5000/contact_supplier/${supplier_id}`);
const jsonData = await response.json();
setContacts(jsonData);
} catch (err) {
console.log(err.message);
}
}
useEffect(() => {
getContact();
}, []);
return <Fragment>
<ListSuppliers getSupplierContacts={getSupplierContacts}
/>
<table className="table mt-5">
<thead>
<tr>
<th>Contact Name</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
{contacts.map(contact => (
<tr key={contact.contact_id}>
<td>{contact.contact_name}</td>
<td><EditContact contact={contact}/></td>
<td><button className="btn btn-danger" onClick={()=> deleteContact(contact.contact_id)}>Delete</button></td>
</tr>
))}
</tbody>
</table>
</Fragment>
然后你像這樣在你的 listSuppliers 組件中使用它
const ListSuppliers = ({getSupplierContacts }) => {
const [suppliers, setSuppliers] = useState([]);
//and you can call it now inside this component
getSupplierContacts ()
...
useEffect(() => {
getSuppliers();
}, []);
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標籤：javascript 反应 表示