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controller.php

/**
 *
 * @return \Entity\BackgroundHome
 */
public function getBackgroundHome()
{
    $hash = $this->getParam()->get('hash');
    $backgroundId = $this->getParam()->getInt('id');
    $isBackgroundPreview = ($this->getParam()->get('preview') == 'background');

    if ($isBackgroundPreview) {
        if ($this->verifyHash($hash)) {
            $this->getTpl()->addGlobal('pre_visualizacao_bg', true);

            return $this->getEm()
                        ->getRepository('Entity\BackgroundHome')
                        ->find($backgroundId);
        } else {
            throw new \Exception\NotFoundException;
        }
    }

    return $this->getEm()
                ->getRepository('Entity\BackgroundHome')
                ->getBackgroundHomeFunc(1);
                // ->findOneBy(array('publicado' => 1));
}

EntityRepo.php

    /**
     * 
     * @param $publicado
     * @return array
     */
    public function getBackgroundHomeFunc($publicado = 1)
    {
        $dql = "SELECT e FROM {$this->entity} e WHERE 1 = 1";
        $parametros = array();

        $dql .= " AND (now() BETWEEN :data_inicial AND :data_final )";
        
        if ($publicado !== "") {
            $dql .= " AND e.publicado = 1";
            $parametros['publicado'] = 1;
        }
        //Executa a query e passa os parâmetros
        $query = $this->getEntityManager()->createQuery($dql);
        $query->setParameters($parametros);


        return $query->getResult();
    }

EntityRepo2.php

        $query = $this->createQueryBuilder('b')
                      ->andWhere('b.publicado = 1')
                      ->andWhere('b.dataInicial < :today')
                      ->andWhere('b.dataFinal > :today OR b.dataFinal IS NULL');

        $today = new \DateTime('now');
        return $query->orderBy('b.dataInicial', 'DESC')
                     ->setParameter('today', $today)
                     ->getQuery()
                     ->useQueryCache(TRUE)
                     ->useResultCache(TRUE, CACHE_LIFE_TIME);

CREATE TABLE tb_background_home
(
id_background_home bigserial NOT NULL,
dt_inicial timestamp without time zone NOT NULL,
dt_final timestamp without time zone,
dt_cadastro timestamp without time zone NOT NULL,
st_publicado integer NOT NULL DEFAULT 0,
no_nome character varying(100) NOT NULL,
id_imagem bigint NOT NULL,
CONSTRAINT pk_background_home PRIMARY KEY (id_background_home),
CONSTRAINT fk_background_home_imagem FOREIGN KEY (id_imagem)
REFERENCES tb_imagem (id_imagem) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT uk_background_home_background_home UNIQUE (id_background_home),
CONSTRAINT ck_background_home_publicado CHECK (st_publicado = ANY (ARRAY[0, 1]))
)
WITH (
OIDS=FALSE
);
ALTER TABLE tb_background_home
OWNER TO postgres;