Yeah, validation will come with module 7, which focuses on form flow. The database modules are the last large modules, so things should start flowing quickly thereafter :)

Anything that doesn't report an error is considered valid. So, to walk through the example within Vine's documentation:

import { FieldContext } from '@vinejs/vine/types'

/**
 * Options accepted by the unique rule
 */
type Options = {
  table: string
  column: string
}

/**
 * Implementation
 */
async function unique(
  value: unknown,
  options: Options,
  field: FieldContext
) {
  /**
   * 1. If the value isn't a valid string, we'll bail out here
   * The "string" rule will handle this particular validation
   * vine.string().use(unique({...}))
   */
  if (typeof value !== 'string') {
    return
  }
  
  // 2. Otherwise, we'll continue validating uniqueness by checking the db
  const row = await db
   .select(options.column)
   .from(options.table)
   .where(options.column, value)
   .first()
   
  // 3. If value is NOT unique, we'll report the error
  if (row) {
    field.report(
      'The {{ field }} field is not unique',
      'unique',
      field
    )
  }

  // If no error was reported by the end of the method
  // we'll assume everything was valid
}

export const uniqueRule = vine.createRule(unique)

  

    

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