class AssetNew extends Component {
  state = {
   name: "",
   description: "",
   manufacturer: "",
   price: ""
 };

onSubmit = async event => {
event.preventDefault();

const { name, description, manufacturer, price} = this.state;

  const accounts = await web3.eth.getAccounts();
  await tracker.methods
    .createAsset(name, description, manufacturer, price)
    .send({
      from: accounts[0],
      value: web3.utils.toWei(this.state.price, "ether"),
      gas: "1000000"
    });
  };

render() {
return (
  <Layout>
    <h3> Create an Asset </h3>
    <Form onSubmit={this.onSubmit} error={!!this.state.errorMessage}>
      <Form.Field>
        <label>Name</label>
        <Input
          value={this.state.name}
          onChange={event => this.setState({ name: event.target.value })}
        />
      </Form.Field>
      ...//Other form fields
 }
}