_bugsnag.html.haml

:javascript
    Bugsnag.releaseStage = "#{Rails.env}";
    Bugsnag.notifyReleaseStages = ["#{Rails.env}"];
    Bugsnag.metaData = #{bugsnag_metadata.to_json};
    Bugsnag.metaData['log'] = { log: "" };
    Bugsnag.log = function(message) {
      Bugsnag.metaData['log']['log'] += message + "\n";
    }

    var _onerror = window.onerror;
    window.onerror = function(message, url, lineNo, charNo, exception) {
      Bugsnag.log("ERROR: " + message + " " + url + " " + lineNo + " " + charNo);
      Bugsnag.log("       OO defined: " + !!OO + ", App defined: " + !!App)
      _onerror(message, url, lineNo, charNo, exception);
    }
    var _notifyException = Bugsnag.notifyException;
    Bugsnag.notifyException = function(exception, name, metaData) {
      var _name;
      if (typeof name !== "string") {
        _name = exception.name;
      } else {
        _name = name || exception.name;
      }

      Bugsnag.log("ERROR: " + _name);
      Bugsnag.log("       OO defined: " + !!OO + ", App defined: " + !!App)
      _notifyException(exception, name, metaData);
    }