views_handler_field_residues.inc

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<?php
class views_handler_field_residues extends views_handler_field {

  function construct() {
    parent::construct();
      $this->additional_fields['residues'] = array('table' => 'feature', 'field' => 'residues');
  }

  function query() {
    $this->ensure_my_table();
    $this->add_additional_fields();
  }

  function render($values) {
    // add a <br> every 100 bp
    return ereg_replace("(.{100})", "\\1<br />", $values->feature_residues);

  }
}