{
  "context": "This criteria evaluates how well the engineer uses Flask-WTF's FileAllowed validator with Flask-Uploads UploadSet objects to validate file uploads in a Flask form. The focus is on proper integration between Flask-WTF and Flask-Uploads for type-based file validation.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "UploadSet creation",
      "description": "Creates UploadSet objects using flask_uploads.UploadSet to define allowed file extensions for images and documents",
      "max_score": 25
    },
    {
      "name": "FileField usage",
      "description": "Uses flask_wtf.file.FileField (or MultipleFileField) to create file upload fields in the form",
      "max_score": 15
    },
    {
      "name": "FileAllowed validator",
      "description": "Uses flask_wtf.file.FileAllowed validator to validate file uploads against the UploadSet objects",
      "max_score": 30
    },
    {
      "name": "FlaskForm integration",
      "description": "Properly extends flask_wtf.FlaskForm to create the upload form with automatic CSRF protection",
      "max_score": 15
    },
    {
      "name": "Form validation",
      "description": "Uses form.validate_on_submit() or form.validate() to trigger validation of uploaded files",
      "max_score": 15
    }
  ]
}