Vehicles | MP plugin that brings vehicles | Game Engine library

I have created database with two collections. Each of these collections connected with relations. Here I want to pass one item _id and check whether it passed to other collection as foreign key. If it's passed, I want to filter all items which consist as _id. How can I do that. Here my mongoose query and screenshot of db. Thank you

I am trying to dynamically write data(in JavaScript)inside my HTML table, but haven't been able to thrive so far. I am relatively new to frontend, especially JS. I would highly appreciate any suggestion on how to get this to function properly. I have tried .innerHTML method, .innerText etc, but no good to show for it. Here's my index.html and app.js files, so anybody can look into it. Thank you soo much in advance!

HTML code:

I'm working on a program for a final in a class and I'm having some troubles with updating the created inventory. I've been able to get it to the point where I can do everything else in the code, but when I go to run the update section, nothing updates. I'd be really grateful for any help with this. All of my code is included below

I am using the following Sequelize request to get a vehicle booking by booking Id. The linked vehicle and its photos are included.

I'm trying to optimize the best routes VRP with OR-Tools. I couldn't find the right function in the documentation. 

CASE: Some customers only accept pickup trucks, some accept only trucks, some accept both trucks, pickup, and vans. There's a single depot location and vehicles should carry orders to the right customers with accepted vehicles.

Those vehicles I have

Customers accept those vehicle types

These vehicles should be directed to the appropriate customers. 

Do you have any thoughts or are there any or-tools function regarding this?

I am trying to allow people to register their vehicles in my system and I want to provide a format check, which is very similar to the format LL-0000.

Is it possible to get this done in the models.py or at least in the forms.py.

This is my models.py just in case you needed it.

https://regexr.com/5u8j6

Expression: (?<=\/)(\d*)

For a project, I have to generate a PDF that lists the vehicles in a DB. To do this, I use the JSPDF library.

1st step: I get data from a DB (via asynchronous requests on an API) and images on a server that I store in an Array.

2nd step: I call a function that generates the PDF with JSPDF. The problem is that I need to have all my data retrieved before calling my generatePDF function otherwise the fields and images are empty because they have not yet been retrieved from the DB or the server.

A solution I found is to use the setTimeout function to put a delay between each call. However, this makes the code very slow and inflexible because you have to change the timeout manually depending on the number of data and images to retrieve. Moreover, it is impossible to determine exactly how long it will take to retrieve the data, especially since this can vary depending on the state of the network, so you have to allow for a margin which is often unnecessary.

Another solution is to use callbacks or to interweave fetch / ajax calls with .then / .done calls, but this becomes very complicated when it comes to retrieving the images since they are retrieved one by one and there are more than a hundred of them.

What would be the easiest way to do this in a clean and flexible way? Thanks for your help and sorry for the long text, I tried to be as clear as possible :)

I have one table vehicles_unavailabilities with following structure:

The from_date and to_date are the dates that the vehicle has been booked and shouldn't show in the search result for the given dates.

In the search form field, there are two inputs, from_date and to_date. I need to get the data if the vehicle is available or not. I've tried following eloquent query. But i don't this is working. Can anyone help in building the query to meet this requirement?