feathers-casl/src/utils/getFieldsForConditions.ts

Add access control with CASL to your feathers application.

import type { AnyAbility } from '@casl/ability'

export const getFieldsForConditions = (
  ability: AnyAbility,
  action: string,
  modelName: string,
): string[] => {
  const rules = ability.possibleRulesFor(action, modelName)
  const allFields: string[] = []
  for (const rule of rules) {
    if (!rule.conditions) {
      continue
    }
    const fields = Object.keys(rule.conditions)
    fields.forEach((field) => {
      if (!allFields.includes(field)) {
        allFields.push(field)
      }
    })
  }
  return allFields
}