Question

这里有我从Firebase检索所有文档的代码，我只能检索文档中存在的数据，但我也想使用它检索文档ID，该怎么办？

Error Error: connect ECONNREFUSED 127.0.0.1:5432

这是我的吸气功能

const express = require('express')
const path = require('path')
const PORT = process.env.PORT || 5000;
const { Pool } = require('pg');

const pool = new Pool({
    connectionString: process.env.DATABASE_URL,
    ssl: {
        rejectUnauthorized: false
    }
});

express()
  .use(express.static(path.join(__dirname, 'public')))
  .set('views', path.join(__dirname, 'views'))
  .set('view engine', 'ejs')
  .get('/', (req, res) => res.render('pages/index'))
    .get('/users', async (req, res) => {
        try {
            const client = await pool.connect();
            const result = await client.query('SELECT * FROM users');
            const results = { 'results': (result) ? result.rows : null};
            console.log(results);
            res.status(200).json(results);
        } catch (err) {
            console.error(err);
            res.send("Error " + err);
        }
    })
  .listen(PORT, () => console.log(`Listening on ${ PORT }`));

Answer 1

要获取ID，请执行以下操作：

 .map((DocumentSnapshot document) {
                    return new CustomCard(
                      docId : document.documentID,
                      name: document['name'],
                      phone: document['phno'],
                      service: document['Category'],
                      address: document['address'],
                      pin: document['pin'],
                      payment: document['Payment'],
                    );
                  }).toList(),

documentID将为您提供每个文档ID。

Answer 2

你也可以做类似的事情

snapshot.data!.docs[index].id

这将返回该索引处文档的 id

我如何从扑扑的Firestore中检索每个文档的文档ID

2 个答案: