     <Router.Link to='viewTask' params={linkParams}>
       {cell.correct_exercise_count}/{cell.exercise_count}
     </Router.Link>
-  
+
 
   getPerfByPeriod: (periodIndex) ->
     console.log(periodIndex)


  sortData: (index) ->
    @setState({sortIndex: index})
    console.log(@state)

  renderHeadingCell: (heading, i) ->
    if i is @state.sortIndex

    else
      @state.colSetWidth = @state.colDefaultWidth
    customHeader =
      <div
        dataKey={i}
        onClick={@sortClick.bind(@, i, classes)}
        className={'header-cell ' + classes}>
          {heading.title}
      </div>
    <Column
    label={heading.title}
    headerRenderer={-> customHeader}
    cellRenderer={-> @cellData}
