taniarascia.com | 💾 ‎ Personal website running on Gatsby , React , and Node.js | Frontend Framework library

I have been recently been working on a node.js api with a postgresql database that stores books. When you go to the route /books it gives me the heroku application error page (here is the api https://node-api-with-books.herokuapp.com/books) and I followed this tutorial to make it https://www.taniarascia.com/node-express-postgresql-heroku/. It is driving me crazy and here is the error it gives when I do:

i am trying to make a CRUD app in DRF-Reactjs by following Tania rascia's example

i have successfully implemented add, delete, list view. but i am trying to edit a specific row which is not updating in DRF backend. but the edited row is shown in the frontend list. why it is not updating in django admin list?

in DRF side views.py:

I have successfully created an api that stores books on heroku with express and postgresql following this tutorial https://www.taniarascia.com/node-express-postgresql-heroku/ witch everything works fine but I tried to follow the front-end part but it doesn't work.

Here is the api here https://node-api-with-books.herokuapp.com/books

Any help would be appreciated and it would help me if you used the tutorial to help.

Background: I have looked through the variations on this question and solutions, but I have not found one that applies to my situation. I know I'm most likely overlooking something incredibly obvious, but it's been hours and I can't for the life of me pinpoint what it is. I'm following along with this tutorial but making it my own: https://www.taniarascia.com/create-a-simple-database-app-connecting-to-mysql-with-php/.

What happens: When I click the submit button, nothing happens. I see "not set" displayed on the screen when the page loads and after clicking submit, so I know I'm in my else block, which means $_POST is not being set.

What I expect to happen: I expect to see "not set" on page load, but then once I have filled out the form and clicked submit, I expect to see "set" in my echo statement to indicate that I'm in my if statement and isset($_POST['submit']) is true/successful, followed by "Success" indicating that the try code block was successful, plus the values I entered in the form fields appearing in the database. For now, though, I'd just be happy if I got that first "set" to display.

I have tried: I've tried breaking out the php into a separate file and linking it up to the form via action="thatfile.php", but I get the same result. I've also tried using "get" instead of "post" for the method and $_REQUEST instead of $_POST, but again, same outcome - "not set" displayed, no data in the db.

Here is my code:

I'm trying to access data.address.street but when I call data.address.street I get a key undefined error.

when I call data.id, data.name, I have no problems but when trying to access the ones inside the multidimensional arrays(objects) I'm getting errors.

This is what I'm trying to call from: https://jsonplaceholder.typicode.com/users/1

The error I'm getting:

I have some question.

I had started React tutorial this page. And I created React project by using 'create-react-app' and delete some files (/src/App.js .. etc.). Finally I written code below and running code.

index.html

Slightly afraid of down-votes as this could be seen as a matter of opinion, but it's not clear how or where else to post this on Stack Exchange, so here I go... I certainly think it's a question that adds value here, at least.

I've recently been reading into Javascript's Map datatype (NOT the map() array method). MDN Reference

I've read and followed various tutorials/articles showing the similarities and differences between Maps, Arrays and 'standard' Objects. One unique property of Maps is that you can use any datatype as a key, including an Object.

There are many examples out there, such as this one from Tania Rascia

I want to use javascript to send some images to my Server running PHP, which then saves these images. I have followed this guide, but my php script only recieves empty files.

I suspect that this piece of javascript from the guide:

i using react hooks and got undefined in function 'deletePersonHandler' on 'setPersonsState'. on the tutorial using 'this.setstate' can delete each item,buat when i trying all data deleted and didn't return. when i see the log 'setPersonsState' 'undefined' solved with this

but still cant set that state,