How to customize the message display in the GX Report?

GX Core Support
1

GX Version: 0.18.8
Python version: 3.11.5
OS: Debian 12

We have an expectation based on a big regular expression not easily understandable. We would want to edit the result of the rapport to display “This does not match the ISO format”.

Reproduction:

            kwargs = {
                "column": key,
                "regex": r"^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))"
                r"?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|"
                r"[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])"
                r"((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)(\17[0-5]\d([\.,]\d+)?)"
                r"?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$",
            }
            return ExpectationConfiguration(
                "expect_column_values_to_match_regex",
                kwargs,
                meta={
                    "notes": {
                        "format": "markdown",
                        "content": ["#### date must be in ISO8601 format"],
                    }
                }
            )

Then build the GX report. And then check the expectation suite and the report generated.

If you need any more info, I will provide more.

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