Using immediately invoked functions to control flow in render.

{(() => {
  if(this.isAdmin()) {
	return (<span className='h4'> by
	  <StaffSelector
		onChange= { this.handleFilterStaffMemberChange }
		value= { state.filterStaffMemberID }
		placeholder='All Staff'
		staffMembers= {this.props.staticData.all_staff}
	  />
	</span>)
  }
})()}