我想避免componentDidUpdate生命周期,并且想要在render中调用一个方法。由于我没有在该组件中加载数据,因此我想摆脱componentDidUpdate。
下面是代码,
export default class child extends React.Component {
state = {
query: '',
data: null,
};
empty_id = 0xffffffff;
componentDidMount() {
this.set_open_data();
}
componentDidUpdate(prevProps) {
if (prevProps.id !== this.props.id) {
this.set_data();
}
}
set_data = () => {
if (!this.props.info) {
return;
}
if (this.props.id === this.empty_id) {
this.setState({data: null});
return;
}
let data = {
info: [],
values: [],
};
const info = this.props.info;
for (let i=0, ii=info.length; i < ii; i++) {
if (info[i].meshes.includes(this.props.id)) {
const info = info[i].info;
const values = info[i].values;
data = {
info: typeof info === 'string' ? info.split('\r\n') : [],
values: values ? values : [],
};
break;
}
}
this.setState({data: this.filter_data(data, this.state.query)});
};
render = () => {
/* i want to call set_data here but should not sure of when to be
called meaning condition like in componentdidupdate method*/
this.set_data();};}
有人可以帮我解决这个问题吗?谢谢。