Checking for File Type in Server Action on Production

Question

I'm curious because if I check for a file (image) in the code below

if (step?.image instanceof File)

I get an error, which I'm assuming is because the server doesn't have access to user local files on production?

How are you effectively checking if data is an image (on the backend) when submitting form data through an action?

Long-legged ant · Answer

in react we have something called a filereader but idk if ur using react in the first assuming ur using react. u dont really need to check the data is an image in backend u can just do that in the client script where u will be taking the data from the user and then only send the data to ur database if its an image

well if u need something else u can ping me i can try to help u more with this

https://developer.mozilla.org/en-US/docs/Web/API/FileReader/FileReader

Checking for File Type in Server Action on Production

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