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  • Adding validation rules
  • Custom validators

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  1. Agent customization
  2. Fields

Validation

PreviousOverride sorting behaviorNextHooks

Last updated 1 year ago

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This is the official documentation of the @forestadmin/agent Node.js agent.

Most data sources can import validation rules from their target. For instance, if you are using the .

  • Columns of type VARCHAR(15) will automatically carry a less than 15 chars validator.

  • Non-nullable columns will automatically carry a Present validator.

However, you may want to enforce stricter restrictions than the ones which are implemented in your data source.

Adding validation rules

collection
  .addFieldValidation('firstName', 'Present')
  .addFieldValidation('firstName', 'LongerThan', 2)
  .addFieldValidation('firstName', 'ShorterThan', 13)
  .addFieldValidation('firstName', 'Match', /^[a-z]+$/i);

Custom validators

The list of operators (Present, LongerThan, ...) which can be used when adding validators is the same as the .

If you need to implement custom validators or validation over multiple fields you may use .

change hooks
SQL data source
A field failing validation
filter operators