Add --graphql-no-typename option to exclude typename field

[koxudaxi]

Fixes: #2095
Closes: #2438
Fixes: #1971

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📥 Commits

Reviewing files that changed from the base of the PR and between 87445c8 and 5254b05.

⛔ Files ignored due to path filters (1)

• tests/data/graphql/no-typename.graphql is excluded by !tests/data/**/*.graphql and included by none

📒 Files selected for processing (18)

• docs/cli-reference/graphql-only-options.md
• docs/cli-reference/index.md
• docs/cli-reference/quick-reference.md
• docs/graphql.md
• src/datamodel_code_generator/__main__.py
• src/datamodel_code_generator/_types/generate_config_dict.py
• src/datamodel_code_generator/_types/parser_config_dicts.py
• src/datamodel_code_generator/arguments.py
• src/datamodel_code_generator/cli_options.py
• src/datamodel_code_generator/config.py
• src/datamodel_code_generator/parser/graphql.py
• src/datamodel_code_generator/prompt_data.py
• tests/data/expected/main/graphql/no_typename.py
• tests/data/expected/main/input_model/config_class.py
• tests/data/expected/parser/graphql/no_typename.py
• tests/main/graphql/test_main_graphql.py
• tests/main/test_public_api_signature_baseline.py
• tests/parser/test_graphql.py

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[github-actions]

📚 Docs Preview: https://pr-2899.datamodel-code-generator.pages.dev

[codspeed-hq]

CodSpeed Performance Report

Merging #2899 will not alter performance

_{Comparing feature/graphql-no-typename (5254b05) with main (87445c8)}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 11 untouched
⏩ 98 skipped¹

Footnotes

1. 98 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.37%. Comparing base (87445c8) to head (5254b05).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2899   +/-   ##
=======================================
  Coverage   99.37%   99.37%           
=======================================
  Files          92       92           
  Lines       16248    16268   +20     
  Branches     1920     1921    +1     
=======================================
+ Hits        16147    16167   +20     
  Misses         52       52           
  Partials       49       49           

Flag	Coverage Δ
unittests	99.37% <100.00%> (+<0.01%)	⬆️

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[koxudaxi]

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[github-actions]

Breaking Change Analysis

Result: No breaking changes detected

Reasoning: This PR adds a new opt-in CLI option --graphql-no-typename with a default value of False. The default behavior is unchanged - GraphQL models will still include the typename__ field by default. Users must explicitly pass --graphql-no-typename to exclude the typename field. The change is purely additive: new CLI option, new config parameter in Python API (with default False), and new category "GraphQL-only Options". No existing code generation, templates, default behaviors, or APIs are modified. The regression test test_graphql_typename_included_by_default explicitly confirms backward compatibility.

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This analysis was performed by Claude Code Action

[github-actions]

🎉 Released in 0.52.0

This PR is now available in the latest release. See the release notes for details.