const _ = require('lodash');
const { ORM, Model, attr } = require('redux-orm');

// define model
class Event extends Model {
}

Event.modelName = 'Event';
Event.fields = {
  title: attr(),
};

// prepare orm and session
const orm = new ORM();
orm.register(Event);
const session = orm.session(orm.getEmptyState());

// generate sample data
_.range(100).forEach(index => {
  session.Event.create({
    title: `Event ${index % 2 === 0 ? '!' : '?'}`
  });
});


// filter now accepts function callbacks
const result = session.Event.query.filter(data => {
  // data is a POJO directly from store
  global.console.warn(data);
  return data.title.includes('!');
});

global.console.warn(result.count());


// filter can also be a POJO with attribute spec
const count = session.Event.query.filter({ title: 'Event !' }).count();
global.console.warn(count);