how to find and display records in a list view filtered by user defined input

gistfile1.php

### Controller ###
public function listAction($search = NULL) {

    if ($search === NULL) {
      /** @var ...\Domain\Model\Search $search */
      $search = $this->objectManager->get('...\\Domain\\Model\\Search');
      $this->getCategorySearchFilterFromFlexForm($search); // this sets some preconfigured values from a flexform
    }

    $records = $this->recordRepository->findBySearchParameters($search);
    $this->view->assign('search', $search);
    $this->view->assign('records', $records);
}

### Repository ###

/**
   * @param Search $search
   *
   * @return array|\TYPO3\CMS\Extbase\Persistence\QueryResultInterface
   */
  public function findBySearchParameters(Search $search) {
    /** @var $query \TYPO3\CMS\Extbase\Persistence\QueryInterface */
    $query = $this->createQuery();
    $query->setOrderings(array('sorting' => QueryInterface::ORDER_DESCENDING));
    $properties = array();

    if ($search->getCategories()) {
      $this->getCategoryProperties($search->getCategories(), $query, $properties);
    }


    if ($search->getPremiumFilter() === TRUE || $search->getPremiumFilter() === FALSE) {
      $properties[] = $query->equals('premium', $search->getPremiumFilter());
    }

    // in case premium only is set, don't care about other filters
    if ($search->getPremiumFilter() === TRUE) {
      if (count($properties) == 0) {
        return $this->findAll();
      } elseif (count($properties) == 1) {
        $query->matching(
          $properties[0]
        );
      } else {
        $query->matching(
          $query->logicalAnd(
            $properties
          )
        );
      }
      $result = $query->execute();
      return $result;
    }

    // get the searchWord properties
    if (strlen($search->getSearchword()) > 0) {
      $this->getSearchWordProperties($search->getSearchword(), $query, $properties, $search->getModel());
    }

    if ($search->getLocationRange() > 0) {
      $properties[] = $query->equals('locationRange', $search->getLocationRange());
    }
    if ($search->getPriceRange() > 0) {
      $properties[] = $query->equals('priceRange', $search->getPriceRange());
    }
    if ($search->getClassification() > 0) {
      $properties[] = $query->equals('classification', $search->getClassification());
    }

    if (count($properties) == 0) {
      return $this->findAll();
    } elseif (count($properties) == 1) {
      $query->matching(
        $properties[0]
      );
    } else {
      $query->matching(
        $query->logicalAnd(
          $properties
        )
      );
    }

    $result = $query->execute();

    return $result;
  }

### View ###

Search form to filter the record list:

<f:form enctype="multipart/form-data" action="list" controller="Records"
        object="{search}" name="search" class="search">
      {f:if(condition:search_show, then: '', else: 'style="display:none;"')} >
      <p class="column left">
        <label for="searchword">
          <f:translate key="search.find"/>
        </label>
        <f:form.textfield property="searchword"/>
        <label for="category">
          <f:translate key="category"/>
        </label>
        <f:form.select property="categories" options="{all_categories}"
                 optionValueField="uid"
                 optionLabelField="title"
                 multiple="1"/>
      </p>
      <p class="column right">
        <label for="locationRange">
          <f:translate
            key="location_range"/>
        </label>
        <f:form.select property="locationRange" options="{all_locationRanges}"
                 optionLabelField="showTitle"
                 prependOptionLabel="{f:translate(key:'choose')}"
                 prependOptionValue="0"/>
        <br/>
        <label for="priceRange">
          <f:translate
            key="price_range"/>
        </label>
        <f:form.select property="priceRange" options="{all_priceRanges}"
                 optionLabelField="showTitle"
                 prependOptionLabel="{f:translate(key:'choose')}"
                 prependOptionValue="0"/>
        <br/>
        <label for="classification">
          <f:translate
            key="classification"/>
        </label>
        <f:form.select property="classification" options="{all_classifications}"
                 optionLabelField="showTitle"
                 prependOptionLabel="{f:translate(key:'choose')}"
                 prependOptionValue="0"/>
      </p>
      <br class="clearfix" />
      <f:form.submit value="{f:translate(key:'search.submit')}" class="submit button"/>
      <f:form.button type="reset" value="{f:translate(key:'search.reset')}"
               class="reset button" >{f:translate(key:'search.reset')}</f:form.button>
      <br class="clearfix"/>
  </f:form>

List of records: 
<f:widget.paginate objects="{records}" as="paginatedObjects"
                 configuration="{itemsPerPage: settings.listView.default.itemsPerPage, insertAbove: 1, insertBelow: 1}">
        <br class="clearfix"/>
        <f:for each="{paginatedObjects}" as="object" iteration="iterator">
          <f:render partial="Records/ListItem" arguments="{_all}"
                section="Main"/>
        </f:for>
      </f:widget.paginate>