[forms] Errors messages should be comprehensible by user

[talend-glorieux]

From @jlamiel on December 7, 2016 16:38

Example :
"default": "gs://temp",
"pattern": "^gs://(.?([^/]+))$"
right now the message is : does not match pattern "^gs://(.?([^/]+))$"

Copied from original issue: Talend/react-talend-forms#47

[talend-glorieux]

Will be handled once rjsf-team/react-jsonschema-form#432 is merged.

[talend-glorieux]

Adding rjsf-team/react-jsonschema-form#155 as a reference,

[jsomsanith-tlnd]

This is supported in the next version of forms (in progress).
You can see it in demo : http://talend.surge.sh/forms/?selectedKind=Core%20concepts&selectedStory=Core-simple
The email input has static regex validation. It displays a custom message from uiSchema when you remove the @ for example.
Let's bet on the next version of forms