删除Cloud Firestore文档中的特定字段时出错 [英] Error in deleting specific field in a cloud firestore document

问题描述

我正在使用此处

Firestore.instance.collection('path').document('name').updateData({'Desc': FieldValue.delete()}).whenComplete((){
  print('Field Deleted');
});

我正在使用

 cloud_firestore: 0.13.2+1

但是，这会引发错误

[ERROR:flutter/lib/ui/ui_dart_state.cc(157)]未处理的异常:类型'MethodChannelFieldValue'不是'FieldValuePlatform'类型的子类型

[ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: type 'MethodChannelFieldValue' is not a subtype of type 'FieldValuePlatform'

谁能告诉我如何正确删除字段

Can anyone tell me how to delete a field right way

推荐答案

您可以参考官方的 Firestore文档以获取有关如何删除字段的指导.

You may refer to the official Firestore documentation for guidance on how to delete fields.

var cityRef = db.collection('cities').doc('BJ');

// Remove the 'capital' field from the document
var removeCapital = cityRef.update({
    capital: firebase.firestore.FieldValue.delete()
});

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