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Add 'omitzero' support to mark optional fields #742

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merged 2 commits into from
Feb 27, 2025

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JasirZaeem
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Add support for using the new omitzero field tag introduced in go-1.24 to mark those fields as optional/not-required

https://tip.golang.org/doc/go1.24#encodingjsonpkgencodingjson

When marshaling, a struct field with the new omitzero option in the struct field tag will be omitted if its value is zero.

Changes

  • Added a new check for omitzero to mark field as optional in schema.go
  • Added new tests in to check omitempty and omitzero in schema_test.go
  • Mentioned the new tag in request-validation.md docs

Lmk if there are other files/places that need changing for this change.

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codecov bot commented Feb 27, 2025

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.00%. Comparing base (b02b165) to head (03bcd0e).
Report is 3 commits behind head on main.

Additional details and impacted files
@@           Coverage Diff           @@
##             main     #742   +/-   ##
=======================================
  Coverage   93.00%   93.00%           
=======================================
  Files          23       23           
  Lines        5246     5250    +4     
=======================================
+ Hits         4879     4883    +4     
  Misses        315      315           
  Partials       52       52           

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@Copilot Copilot AI left a comment

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PR Overview

This pull request adds support for the new "omitzero" field tag introduced in go-1.24 to allow fields with a zero value to be omitted during JSON marshaling.

  • Updated schema processing to treat fields tagged with "omitzero" as optional.
  • Added tests for both "omitempty" and "omitzero" tag behavior.
  • Updated documentation to mention the new tag.

Reviewed Changes

File Description
schema.go Integrated "omitzero" flag in required field logic
schema_test.go Added tests to verify behavior for "omitempty" and "omitzero" tags
docs/docs/features/request-validation.md Updated documentation examples to include "omitzero" tag

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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@danielgtaylor danielgtaylor left a comment

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Awesome thank you @JasirZaeem 👍

@danielgtaylor danielgtaylor merged commit a90a42c into danielgtaylor:main Feb 27, 2025
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@JasirZaeem
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@danielgtaylor Thanks for the great library :)

@JasirZaeem JasirZaeem deleted the make-omitzero-optional branch February 27, 2025 19:35
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2 participants