# `MishkaGervaz.Form.Verifiers.ValidateUploads`
[🔗](https://github.com/mishka-group/mishka_gervaz/blob/v0.0.1-alpha.3/lib/mishka_gervaz/form/verifiers/validate_uploads.ex#L1)

Validates the `uploads` section of MishkaGervaz form DSL.

Four checks, in order:

  1. `field` reference (when set) names a field declared in the form.
  2. `accept` is a valid HTML accept string or list of MIME types /
     extensions (e.g. `"image/*,.pdf"` or `[".pdf", "image/*"]`).
  3. When `external` points to a module, that module is loadable.
     Anonymous-function externals are passed through.
  4. When `writer` is set, the writer module is loadable.

See `MishkaGervaz.Form.Dsl.Uploads`,
`MishkaGervaz.Form.Entities.Upload`,
`MishkaGervaz.Form.Verifiers.Helpers`, and sibling verifiers.

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*Consult [api-reference.md](api-reference.md) for complete listing*