entitySave

index.js

// db/utils/buildSaver.js


const buildEntitySaver = (tableName, entityToDB) => {
   
  function create(entity) {
    return queryBuilder(tableName)
        .insert(entityToDB(entity))
        .returning('id')
        .then(([id]) => id);
  }

  function edit(entity) {
    return queryBuilder(tableName)
        .update(entityToDB(entity, true))
        .returning('id')
        .where('id', entity.id)
        .then(([id]) => id)
  }
  
  function save(entity) {
    if (entity.id === null) {
        return create(entity)
            .then(id => entity.set('id', id));
    }

    return edit(entity).then(() => entity);
  }
  
  return save;
}



// db/contact/save.js

function entityToDB(contact, isEdition = false) {
    const {
        type,
        createdAt,
        updatedAt,
    } = contact;

    return {
        type,
        created_at: createdAt,
        updated_at: isEdition ? new Date() : updatedAt,
    };
}

const entityToDB = new Resolver({
  id: (data, { isEdition }) => 
  updatedAt: (data, { isEdition }) => isEdtition === true ? new Date() : data.updated_at;
})

entityToDB(data, { isEdition });


const saveContact = buildEntitySaver('contact', entityToDB);