Attempting to save data that is streamed from a twitter api - node.js

Question

I am trying to save data from tweets to a mongoDB database using node and express.
I am using the twitter api to stream twitter data with a specific hashtags. I just want to save the text content of the post:
Here is how the tweet content shows up when it is console.logged:
(Note this feature works and this is my own posted
{
created_at: 'Tue Mar 15 06:38:58 +0000 2022',
id: 1503621761388134400,
id_str: '1503621761388134410',
text: '#TelecomDisaster Test for project 2',
source: 'Twitter Web App',
truncated: false,
in_reply_to_status_id: null,
in_reply_to_status_id_str: null,
in_reply_to_user_id: null,
in_reply_to_user_id_str: null,
in_reply_to_screen_name: null,
user: {
id: 1472188612494172200,
id_str: '1472188612494172172',
name: 'Dillon Rampersad',
screen_name: 'R_Dillon_25',
location: null,
url: null,
description: null,
translator_type: 'none',
protected: false,
verified: false,
followers_count: 5,
friends_count: 11,
listed_count: 0,
favourites_count: 22,
statuses_count: 63,
created_at: 'Sat Dec 18 12:55:26 +0000 2021',
utc_offset: null,
time_zone: null,
geo_enabled: false,
lang: null,
contributors_enabled: false,
is_translator: false,
profile_background_color: 'F5F8FA',
profile_background_image_url: '',
profile_background_image_url_https: '',
profile_background_tile: false,
profile_link_color: '1DA1F2',
profile_sidebar_border_color: 'C0DEED',
profile_sidebar_fill_color: 'DDEEF6',
profile_text_color: '333333',
profile_use_background_image: true,
profile_image_url: 'http://pbs.twimg.com/profile_images/1472188757956780033/OMlZZeZI_normal.jpg',
profile_image_url_https: 'https://pbs.twimg.com/profile_images/1472188757956780033/OMlZZeZI_normal.jpg',
default_profile: true,
default_profile_image: false,
following: null,
follow_request_sent: null,
notifications: null,
withheld_in_countries: []
},
geo: null,
coordinates: null,
place: null,
contributors: null,
is_quote_status: false,
quote_count: 0,
reply_count: 0,
retweet_count: 0,
favorite_count: 0,
entities: { hashtags: [ [Object] ], urls: [], user_mentions: [], symbols: [] },
favorited: false,
retweeted: false,
filter_level: 'low',
lang: 'en',
timestamp_ms: '1647326338513'
}
I want to save text: '#TelecomDisaster Test for project 2', and created_at: 'Tue Mar 15 06:38:58 +0000 2022', to my database.
I am trying with the function below to save just the text for now but i dont quite understand how to:
const express = require('express')
const router = new express.Router();
var Twitter = require('twit')
const TwitterPosts = require("../db/models/TwitterPosts.model");
//api keys goes here but it removed for safety
var stream = client.stream('statuses/filter', { track: '#TelecomDisaster' })
stream.on('tweet', function (tweet) {
console.log(tweet)
let newtweet = new TwitterPosts({
tweet: req.body.postContent
});
newtweet.save().then((twit) => {
res.send(twit);
console.log(twit);
})
});
module.exports = router;
The model for the schema:
const mongoose = require('mongoose');
const TwitterPostsSchema = new mongoose.Schema({
twitterUsername:{
type: String,
required: false,
minlength:1,
trim: true
},
postContent:{
type: String,
required: false,
minlength:1,
trim: true
},
postDateTime:{
type: Date,
required: false,
default: Date.now
}
})
const TwitterPosts = mongoose.model( 'TwitterPosts', TwitterPostsSchema);
module.exports = TwitterPosts
Whenever it trys to save i get the error
tweet: req.body.postContent
^
ReferenceError: req is not defined
i did not define req but in this use case i dont know how to do that exactly when streaming the tweets.
To conclude i am trying to save tweets to a mongoDB database using node and express. the tweets are streamed as shown above but i dont quite understand how it is saved to the database.

Answer 1

you receive tweet in stream.on listener, so it's just tweet, instead of req.body.postContent:
let newtweet = new TwitterPosts({
tweet: tweet
});
or, according to your schema:
let newtweet = new TwitterPosts({
twitterUsername: tweet.user.name,
postContent: tweet.text,
postDateTime: tweet.created_at
});