Validation

const fields = [{
  ...,
  rules: [
    'required',
    'min:number',
    'max:number',
    'between:number:number',
    'equal:number',
    'email',
    'url'
    'file'
  ]
}];

import { IField, getValues } from "solid-formly";

async function notEqual(): boolean {
  const values = await getValues(form_name);
  if (values.firstname === values.lastname) {
    return false;
  }
  return true;
}

async function customRule2(): boolean {
  const values = await getValues(form_name);
  ....
}

const fields: IField[] = [
  {
    type: "input",
    name: "firstname",
    attributes: {
      id: "firstname"
    },
  },
  {
    type: "input",
    name: "lastname",
    attributes: {
      id: "lastname"
    },
    rules: [notEqual, customRule2],
    messages: {
      // Custom message error
      // property name must equal to function name.
      notEqual: "Last name must not equal to First name",
      customRule2: "foo bar"
    }
  }
];

const fields: IField[] = [{
  type: "file",
  name: "name-file",
  attributes: {
    id: "id-field",
    classes: ["form-control"],
    label: "Image"
  },
  extra: {
    showPreview: true,
    multiple: true
  },
  rules: ["file"],
  file: {
    types: "jpg,gif,png", // extensions
    maxsize: 5 // 5MB
  }
}];