findOne()

Quickly find an entity by passing key/value pairs. You can optionally pass an ancestors array or a namespace.

@Returns an gstore entity instance of the Model.

This method accepts the following arguments:

MyModel.findOne(
    /* {object}. -- Key/Value pairs to look for */
    <propsValues>,
    /* {Array} -- optional. ex: ['ParentEntity', 1234 ] */
    <ancestors>,
    /* {string} -- optional. A specific namespace */
    <namespace>,
    /* {object}. -- optional. Options for the query */
    <options>,
    /* {function} -- optional. The callback, if not passed a Promise is returned */
    <callback>
)

options

The options argument accepts the following properties:

• cache (default: the "global" cache configuration) "true" = read from the cache and prime the cache with the query response.

• ttl (default: the global cache.ttl.queries value) Custom TTL value for the cache. For multi-store it can be an Object of TTL values.

Example:

const User = require('./user.model');

User.findOne({ email: '[e-mail]' })
    .then((entity) => {
        console.log(entity.plain()); // entityData + id
        console.log(entity.firstname)); // 'John'
});

// Disable cache
User.findOne({ email: '[e-mail]' }, null, null, { cache: false })
    .then((entity) => {
        console.log(entity.plain()); // entityData + id
        console.log(entity.firstname)); // 'John'
});

// Custom TTL for cache
// ttl set to "-1" means to not cache for this store
User.findOne({ email: '[e-mail]' }, null, null, { ttl: { memory: -1, redis: 300 } })
    .then((entity) => {
        console.log(entity.plain()); // entityData + id
        console.log(entity.firstname)); // 'John'
});

// with a callback
User.findOne({ email: '[e-mail]' }, function onEntity(err, entity) {
    if (err) {
        ... // deal with error
    }

    console.log(entity.plain());
    console.log(entity.get('name'));
});