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def require(parameters, status=400):
    """
    View decorator that requires the wrapped view to contain each of the fields
    in the `parameters` argument as part of the query string, or else aborts the
    request with the HTTP error corresponding to the `status` argument.
    """
    def decorator(view):
        @functools.wraps(view)
        def inner(*args, **kwargs):
            if not all((field in request.args for field in parameters)):
                abort(status)
            else:
                return view(*args, **kwargs)
        return inner
    return decorator