rating | Rating stars | Recommender System library

I'm writing a Firebase function (Gist) which

1. Queries a realtime database ref (events) in the following fashion:

   await admin.database().ref('/events_geo').once('value').then(snapshots => {

2. Iterates through all the events

   snapshots.forEach(snapshot => {

3. Events are filtered by a criteria for further processing

4. Several queries are fired off towards realtime DB to get details related to the event

   await database().ref("/ratings").orderByChild('fk_event').equalTo(snapshot.key).once('value').then(snapshots => {

5. Data is prepared for SendGrid and the processing is finished

All of the data processing works perfectly fine but I can't get the outer await (point 1 in my list) to wait for the inner awaits (queries towards realtime DB) and thus when SendGrid should be called the data is empty. The data arrives a little while later. Example output from Firebase function logs can be seen below:

10:54:12.642 AM Function execution started

10:54:13.945 AM There are no emails to be sent in afterEventHostMailGoodRating

10:54:14.048 AM There are no emails to be sent in afterEventHostMailBadRating

10:54:14.052 AM Function execution took 1412 ms, finished with status: 'ok'

10:54:14.148 AM

Super hyggelig aften :)

super oplevelse, ... long string generated

Gist showing the function in question

I'm probably mixing up my async/awaits because of the awaits inside the await. But I don't see how else the code could be written without splitting it out into many atomic pieces but that would still require stitching a bunch of awaits together and make it harder to read.

So, two questions in total. Can this code work and what would be the ideal way to handle this pattern of making further processing on top of data fetched from Realtime DB?

Best regards, Simon

I have been facing a problem recently regarding JSONB data type in my Postgresql DB.

I have a rather complex structure of my column (let's say the table is called RATING and the column name FOOD_VALUE - making it up) which goes, for example, as follows:

I have the following graph in Neo4j:
Book: book_id, isbn, language_code, title, image_url, small_image_url, avg_ratings,
Author: name,
Reader: id,
with 3 relationships:
(Reader)-[:Rated]->(Book) that has the property {rating: value},
(Reader)-[:Recommend]->(Book),
(Author)-[:Write]->(Book).

I want to find the book that has been most recommended with a query in Cypher.
I wrote a query but I'm not too sure about it because I'm not familiar using count() and max() operators.

Here is my attempt:

I am having a table that stores ratings of a restaurant. As shown in the below image.

I am trying to get the average of all these columns in which I am being successful but I also want an average of all these averages as a main average.

I tried the below query but I am getting 3 as average rating which is not accurate. I think mysql is returning me a round value of the final result.

I need to filter hotels by multiple conditions: stars (multiple choice), type (multiple choice), price(range with two ends), country (one of the list). I tried to do that like that:

I'm very new to python and don't know how to proceed. I have a csv file with over 100k rows in following structure:

I have a subcollection "Ratings" inside this "Posts" collection so when i get any post will this collection will be fetched automatically or i have to reference it separately. And if this subcollection Ratings is fetched with the post so it'll be count as a separate read or same as the Post read?

I need some help in trying to web scrape laptop prices, ratings and products from Flipkart to a CSV file with BeautifulSoup, Selenium and Pandas. The problem is that I am getting an error AttributeError: 'NoneType' object has no attribute 'text' when I try to append the scraped items into an empty list.

I have an array of object that i got from my API and then displayed them to parent component as table row like so :

review.js

Each row has its own edit button where when i click ,it will popup a modal ( not redirecting to another page ) and it will contain some information based on which row i click. Below is the example when i click the forth row which has "Mamang Racing" as the client name.

reviewDetailModal.js

The Problem is , on the children component (modal component) when i about to edit any other rows for some reason it will still show me the latest data ( in this case the forth row ).

Code is shown below :

review.js