我试图在提交时将一个状态属性的值存储在另一个状态属性中,以便可以将URL友好的数据段提交到我的数据库。
下面是提交表单时调用的函数的一部分。目前,该表单已提交到数据库(Firestore),并且工作正常。但是,我需要收集用户输入到streetAddress的值,对它进行分段,然后使用状态的slug属性将其作为自己的slug字段提交给我的数据库。
我遇到的问题是我不知道该怎么做。我尝试了几种方法,并且将slug提交到数据库,但始终使用空值。以下是我尝试过的方法。
onSubmit = event => {
const { reviewTitle, reviewContent, streetAddress, cityOrTown,
countyOrRegion, postcode, startDate, endDate, landlordOrAgent, rating, slug } = this.state;
this.setState({
slug: streetAddress
})
// Creating batch to submit to multiple Firebase collections in one operation
var batch = this.props.firebase.db.batch();
var propertyRef = this.props.firebase.db.collection("property").doc();
var reviewRef = this.props.firebase.db.collection("reviews").doc();
batch.set(propertyRef, { streetAddress, cityOrTown,
countyOrRegion, postcode, slug,
uid });
batch.set(reviewRef, { startDate, endDate,
reviewTitle, reviewContent, rating,
uid });
batch.commit().then(() => {
this.setState({ ...INITIAL_STATE });
});
event.preventDefault();
};
有人能指出我正确的方向还是告诉我我做错了什么?
答案 0 :(得分:1)
this.setState
是一个异步功能。因此,您可以做的就是在状态更新后调用回调函数。
this.setState({
slug: streetAddress
}, () => {
// Creating batch to submit to multiple Firebase collections in one operation
var batch = this.props.firebase.db.batch();
var propertyRef = this.props.firebase.db.collection("property").doc();
var reviewRef = this.props.firebase.db.collection("reviews").doc();
batch.set(propertyRef, {
streetAddress, cityOrTown,
countyOrRegion, postcode, slug,
uid
});
batch.set(reviewRef, {
startDate, endDate,
reviewTitle, reviewContent, rating,
uid
});
batch.commit().then(() => {
this.setState({ ...INITIAL_STATE });
});
event.preventDefault();
})