如何处理 React 中的权限检查?我尝试了两种方式。有没有更好的方法来处理权限检查,或者哪一种最好用?
类型 1
通过上下文传递权限。如果权限满足返回组件或 null,则权限组件从上下文中获取权限
class HomePage extends React.Component{
getChildContext(){
return {permission:this.props.permission}
}
render(){
return <div>
<Permission check='Edit'>
<PopupMenu>
<div>Edit</div>
</PopupMenu>
</Permission>
<Permission check='Delete'>
<PopupMenu>
<div>Delete</div>
</PopupMenu>
</Permission>
</div>
}
}
HomePage.childContextType={permission:...}
class Permission extends React.Component{
render(){
if(this.context.permissions.indexOf(this.props.check)!=-1)
return this.props.children
else
return null;
}
}
Type 2
在mapStateToProps函数中检查权限,根据权限返回props
class HomePage extends React.Component{
render(){
return <div>
<PopupMenu>
<div>{this.props.operation}</div>
</PopupMenu>
</div>
}
}
function mapStateToProps(state){
var operation="";
if(state.permission=="Edit"){
operation="Edit"
}
else if(state.permission=="Delete"){
operation="Delete"
}
return {operation}
}
connect(mapStateToProps)(HomePage)