Without file not able to access fields in multipart/form-data type

[vasu-rangpariya-xl]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Fastify version

^4.6.0

Plugin version

No response

Node.js version

^16

Operating system

Linux

Operating system version (i.e. 20.04, 11.3, 10)

Ubuntu 22.04.1 LTS

Description

When we create route that accepts data as an multipart/form-data and when we don't pass file/binary in payload we are not able to access fields that is passed in body and also there is some kind of sequence like always we have to pass fields in first and last need to contain binary/file

Steps to Reproduce

• create route that accepts multipart/form-data
• try to access the form body with req.file()
• now don't pass any file or binary just only pass fields which contains any type of data like ( string,int..etc )
• then try to access that fields in req.file() / req.body anywhere it is not available

Expected Behavior

Should be able to access those fields in req.body although we don't pass any file or binary

[mcollina]

Thanks for reporting!

Can you provide steps to reproduce? We often need a reproducible example, e.g. some code that allows someone else to recreate your problem by just copying and pasting it. If it involves more than a couple of different file, create a new repository on GitHub and add a link to that.

[imbhaskarn]

Hey @mcollina I would like to work on this issue.

[mcollina]

go for it

[climba03003]

After looking at this issue again. The behavior is expected since request.file will trigger the body stream to resume and start parsing.
You are required to use either request.parts() or attachFieldsToBody if you like automatic process.