tle_ui.persistent_query.js

jQuery(document).ready(function($) {

  var parametersToPersist = ['region', 'community', 'content_types', 'page'];
  var currentParams = getUrlVars(window.location.href);
  var queryString = buildQuery(currentParams);

  console.log(decodeURIComponent(queryString));

  jQuery("a").not("a.ext").each(function(){
    var href = jQuery(this).attr('href');
    if (href) {
      href += (href.match(/\?/) ? '&' : '') + queryString;
      
      if (href.indexOf('?') != -1) {
        var split_href = href.split('?');
        if (split_href[0].indexOf('#') != -1) {
          href = split_href[0];
        }
      }
      jQuery(this).attr('href', href);
    }
  });

  function getQueryStringParams(url) {
    var params = [];

    if (url.indexOf('?') != -1) {
      params = url.slice(url.indexOf('?') + 1).split('&');
    }

    return params;
  }

  function getUrlVars(url) {
    var result = [];
    var hash = [];
    var hashes = getQueryStringParams(url);

    for (var hashCount = 0; hashCount < hashes.length; hashCount++) {
      hash = hashes[hashCount].split('=');
      // Limit the parameters that can be added.
      for (var parameterCount = 0; parameterCount < parametersToPersist.length; parameterCount++) {
        var parameterToPersist = parametersToPersist[parameterCount];
        if (hash[0].indexOf(parameterToPersist) != -1) {
          result[parameterToPersist + '[' + hash[1] + ']'] = hash[1];
        }
      }
    }

    return result;
  }

  function buildQuery(parameters) {
    var qs = "";
    var queryString = '';
    for (var key in parameters) {
      var value = parameters[key];
      qs += encodeURIComponent(key) + "=" + encodeURIComponent(value) + "&";
    }
    if (qs.length > 0) {
      qs = qs.substring(0, qs.length - 1); // Remove last "&"
      queryString = queryString + "?" + qs;
    }
    return queryString;
  }

});