Scoped uniqueness on 8base via triggers

8base.yml

# https://docs.8base.com/docs/8base-console/custom-functions/triggers/
functions:
  beforeProjectCreate:
    handler:
      code: triggers/beforeProjectCreate.js
    type: trigger.before
    operation: Project.create
    description: Enforce unique Project slugs within a team upon create

  beforeProjectUpdate:
    handler:
      code: triggers/beforeProjectUpdate.js
    type: trigger.before
    operation: Project.update
    description: Enforce unique Project slugs within a team upon update

README.md

Scoped uniqueness on 8base via triggers

Rough example for how to achieve fields that have unique values within a relation, for example, projects with unique slugs within a team.

beforeProjectCreate.js

async function slugExists (api, teamId, slug) {
  const response = await api.gqlRequest(`{
    projectsList (
      filter: {
        slug: {
          equals: "${slug}"
        }
        team: {
          id: {
            equals: "${teamId}"
          }
        }
      }
    ) {
      items {
        id
      }
    }
  }`)

  return response.projectsList.items && response.projectsList.items.length
}

export default async ({ data }, { api }) => {
  if (
    data.slug &&
    data.team.connect.id &&
    await slugExists(api, data.team.connect.id, data.slug)
  ) {
    throw new Error('Project\'s slug must be unique within a team')
  }

  return {
    data
  }
}

beforeProjectUpdate.js

async function slugExistsByProjectId (api, projectId, slug) {
  const response = await api.gqlRequest(`{
    project(
      id: "${projectId}"
    ) {
      team {
        projects (
          filter: {
            slug: {
              equals: "${slug}"
            }
          }
        ) {
          items {
            id
          }
        }
      }
    }
  }`)

  return response.project.team.projects.items && response.project.team.projects.items.length
}

export default async ({ data, originalObject }, { api }) => {
  if (
    data.slug !== originalObject.slug &&
    await slugExistsByProjectId(api, originalObject.id, data.slug)
  ) {
    throw new Error('Project\'s slug must be unique within team')
  }

  return {
    data
  }
}