Support ajv-errors in parameter schema

[likexoo]

Suggestion

Support ajv-errors in parameter schema.

Use Cases

So we can define custom error message.

Examples

    @get('/v1/test/{_id}')
    public async test(
        @param({
            in: 'path',
            name: '_id',
            schema: {
                type: 'number'
            },
            errorMessage: '....' // <= 
        }) _id: unknown

    ) {
        // ...
    }

Acceptance criteria

TBD - will be filled by the team.

[raymondfeng]

We support ajv-errors for model properties, see https://loopback.io/doc/en/lb4/Model.html#custom-validation-rules-and-error-messages. Do you propose to extend it for OpenAPI parameters?

[likexoo]

@raymondfeng Yes and using it in @param.

[raymondfeng]

PR #6285 will probably fix this issue.

[dhmlau]

Closing as done since PR #6285 has landed.