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Dynamic messages

See original GitHub issue

Hi there! First of all, I would like to thank you guys for this incredible library - it really makes validation very easy.

Second, I would like to ask whether it’s possible to show message in more dynamic fashion?

The reason why I need is that I’m doing a uniqueness check making a backend call which returns a result with some data that should be used in error message. I know that yup allows you to define params that can be used in messages but it’s more static approach. It would be really cool if we could provide a function as a message that would receive these params, validation results and a value in order to generate a desired error message.

Issue Analytics

State:
Created 5 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

6reactions

jquensecommented, Sep 17, 2018

@ziflex no need to to be taht fancy. this.createError is provided in on the function context for customizing the rendered message, you can override or extend any of the values and return the error in the test.

https://github.com/jquense/yup/blob/master/src/util/createValidation.js#L31

1reaction

jquensecommented, Sep 10, 2018

It would be really cool if we could provide a function as a message that would receive these params

you can do that 👍

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