📝 [Proposal]: Add options for active DisallowUnknownFields in the function BodyParser

[solrac97gr]

Feature Proposal Description

Add options object for active the DisallowUnknownFields in the BodyParser for more strict parsing to a struct in cases where is required.

Alignment with Express API

BodyParser middleware for JSON in express permit you to add different options that affect the parsing

HTTP RFC Standards Compliance

Confirmed

API Stability

DisallowUnknownFields is a native functions of the Decoder from native Go package json

Feature Examples

type Cat struct {
     Name
}


POST /cats
{
  “Name”: “lasagna”
   “Age”: 3
}

Response:
Error the request body not match exactly the struct of Cat

p := new(Person)
if err := c.BodyParser(p,Options{DisallowUnknownFields:true}); err != nil {
   return err
}

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have searched for existing issues that describe my proposal before opening this one.
• I understand that a proposal that does not meet these guidelines may be closed without explanation.

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[ReneWerner87]

we want to fundamentally adapt the parsing of the body information, if necessary we can take this into account in the pull request

#2006