Autogenerating Forms Old - Conditional Submit

index.js

handleSubmit = () => {
  const { form } = this.state;

  // TODO: Contact some API with the data
  console.log("submitting", form.getValues());

  // Simulate response from API saying that email address is already in use and report this error
  // to the user
  if (form.get("fields.email.value") === "taken@example.com") {
    form.set({ "fields.email.err": "already in use" });
  } else {
    // Everything was successful so redirect, show confirmation, etc...
  }
};