   propTypes:
     bookId: React.PropTypes.string.isRequired
     section: React.PropTypes.string
+    ecosystemId: React.PropTypes.string.isRequired
 
   getInitialState: ->
     isShowingTeacherContent: true, isShowingBook: false

      </BS.NavItem>
      <BS.DropdownButton title="Available Books" className="dropdown-toggle">
        {for book in EcosystemsStore.allBooks()
          <li key={book.id}><BookLink book={book} /></li>}
      </BS.DropdownButton>
    </BS.Nav>


    if @state.isShowingBook
      teacherContent = <TeacherContentToggle isShowing={@state.isShowingTeacherContent}
        onChange={@setTeacherContent} />
    <BS.Nav navbar right>
      <BS.NavItem>
        {teacherContent}
