function renderOptions(props) {
   return DataTypes.map((t) => {
     if (checkVersion(t, props)) {
       return <Option key={t} value={t}>{t}</Option>
     } else {
       return null;
     }
   }).filter((t => t !== null))
 }
 render() {
   let typeDropdown = (
     <Dropdown
       value={this.state.type}
       onChange={(type) => this.setState({ type: type })}>
       {DataTypes.map((t) => <Option key={t} value={t}>{t}</Option>)}
     </Dropdown>
   );
   return (
     <Modal
       type={Modal.Types.INFO}
       icon='ellipses'
       iconSize={30}
       title='Add a new column'
       subtitle='Store another type of data in this class.'
       disabled={!this.valid()}
       confirmText='Add column'
       cancelText={'Never mind, don\u2019t.'}
       onCancel={this.props.onCancel}
       onConfirm={() => {
         this.props.onConfirm(this.state.type, this.state.name, this.state.target);
       }}>
       <Field
         label={
           <Label
             text='What type of data do you want to store?' />
           }
         input={typeDropdown} />
       {this.state.type === 'Pointer' || this.state.type === 'Relation' ?
         <Field
           label={<Label text='Target class' />}
           input={this.renderClassDropdown()} /> : null}
       <Field
         label={<Label text='What should we call it?' description={'Don\u2019t use any special characters, and start your name with a letter.'} />}
         input={<TextInput placeholder='Give it a good name...' value={this.state.name} onChange={(name) => this.setState({ name })} />}/>
     </Modal>
   );
 }