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wachterjohanneswachterjohannes/symfony-skills/skills/make-voter/SKILL.md

make-voter

Skill4 starsChanged 2 months agoMITView on GitHub

Use when access to an object depends on who is asking — ownership, state, or role combined with data.

The file

We split this skill into the rules it gives an agent

1 rule. About 0 are common, 1 is distinctive, and 0 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈1

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Call it through the framework:

    line 29

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Security voter

symfony console make:voter PostVoter

The maker takes the class name as an argument and asks nothing further. Install it first if it is missing: symfony composer require --dev symfony/maker-bundle.

When a voter is the right answer

A role answers "who is this user". A voter answers "may this user do this to that object". Ownership, workflow state, or a rule combining a role with data belongs in a voter — not in an if inside a controller, where it cannot be reused and cannot be tested on its own.

What to keep

The generated class implements supports() and voteOnAttribute(). Declare the supported attributes as class constants (PostVoter::EDIT) so callers cannot typo a string.

Call it through the framework:

#[IsGranted(PostVoter::EDIT, subject: 'post')]

or $this->denyAccessUnlessGranted(PostVoter::EDIT, $post) when the decision happens mid-action.

A voter is an ordinary service — inject what it needs through the constructor, and unit-test it directly.

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Your trail

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