blitz-form-builder is a React package built on top of Material-UI and react-hook-form. It simplifies the process of creating single & multi step forms, making it up to 20 times faster to build and manage complex forms in your React applications.

• Easy-to-use API: A declarative syntax to define forms and fields.
• Material-UI Integration: Leverages Material-UI components for a seamless and consistent design.
• React Hook Form: Provides robust form validation and state management out of the box.
• Customizable: Easily extend and override default behaviors to meet specific requirements.
• Performance Optimized: Minimal re-renders and high efficiency thanks to react-hook-form's architecture.

Install the package via npm or yarn:

npm install blitz-form-builder
# or
yarn add blitz-form-builder

Here’s a basic example to get started:

import { FormBuilder, Template } from "blitz-form-builder";

function App() {
  const template: Template = {
    config: [
      {
        type: "textfield",
        label: "Email address",
        name: "email",
      },
      {
        type: "textfield",
        label: "First Name",
        name: "firstname",
      },
      {
        type: "textfield",
        label: "Last Name",
        name: "lastname",
      },
    ],
  };

  return (
    <>
      <FormBuilder
        onSubmit={(data) => console.log(data)}
        template={[template]}
      />
    </>
  );
}

export default App;

The config object allows you to define the form structure and behavior:

• fields: An array of field definitions, currently blitz-form-builder supports ("textfield" "date", "select", "radio", "checkbox", "autocomplete", "rating", "switch", "render"). Each field supports the following properties:

  • name: (string) Unique identifier for the field.
  • label: (string) Label displayed alongside the field.
  • type: (string) Field type (e.g., 'textfield', 'date', 'select', etc.).
  • formControlProps?: Provides context such as filled/focused/error/required for form inputs. Relying on the context provides high flexibility and ensures that the state always stays consistent across the children of the FormControl.
  • formLabelProps?: Provides context for the field label;
  • fieldProps?: field customization

To customize your field use the fieldProps option to access its attributes

{
    type: "textfield",
    label: "Email address",
    name: "email",
    fieldProps() {
        return { size: "medium", fullWidth: true, variant: "outlined" };
    },
},

To handle your fields based on your form's state you can access your state like follows

{
    type: "textfield",
    label: "Email address",
    name: "email",
    fieldProps(props) {
    const { watch } = props;
    const firstname = watch("firstname");
      if (firstname === "jack") {
        return { disabled: true };
      }
    }
}

blitz-form-builder extends the html form attributes in addition to those important ones:

• schema validation: We also support schema-based form validation with Yup, Zod , Superstruct & Joi, where you can pass your schema to useForm as an optional config. It will validate your input data against the schema and return with either errors or a valid result.

const LoginSchema = Yup.object().shape({
    email: Yup.string().required("email is required").email("email is wrong"),
  });

  ...
  ...

  <FormBuilder
    validationSchema={LoginSchema}
    ...
    ...
    />

• form control: Control form validation mode and other necessary behaviours using formProps which contains these props:

mode: Validation strategy before submitting behaviour.

reValidateMode: Validation strategy after submitting behaviour.

defaultValues: Default values for the form.

values: Reactive values to update the form values.

errors: Reactive errors to update the form errors.

resetOptions: Option to reset form state update while updating new form values.

criteriaMode: Display all validation errors or one at a time.

shouldFocusError: Enable or disable built-in focus management.

delayError: Delay error from appearing instantly.

shouldUseNativeValidation: Use browser built-in form constraint API.

shouldUnregister: Enable and disable input unregister after unmount.

 <FormBuilder
    formProps={{
        defaultValues: {
            email: "example@example.com",
        },
        mode: "onBlur",
    }}

• form provider: provides React Context to your form using the formProvider prop
• stepper props: if your form is a multi stepper, you can use the stepperProps to customize it and provide titles for each step, e.g.

<FormBuilder
    template={[template]}
    stepperProps={{
        titles: ["Genaral information", "Documents upload"],
    }}
    />
</>

• form submition: the formBuilder offers a onSubmit prop to submit your component

  const template: Template = {
    config: [
      {
        type: "textfield",
        label: "Email address",
        name: "email",
        fieldProps(props) {
          const { watch } = props;
          const firstname = watch("firstname");
          console.log(firstname);
          if (firstname === "jack") {
            return { disabled: true };
          }
        },
      },
      {
        type: "textfield",
        label: "First Name",
        name: "firstname",
      },
      {
        type: "textfield",
        label: "Last Name",
        name: "lastname",
      },
      {
        type: "render",
        name: 'render',
        RenderComponent: () => {
          return <Button type="submit">Submit</Button>
        }
      }
    ],
  };

  return (
    <>
      <FormBuilder
        template={[template]}
        formProps={{
          defaultValues: {
            radio: 2,
            email: "example@example.com",
            select: "1",
          },
          mode: "onBlur",
        }}
        onSubmit={(data) =>
            console.log(data)
            // make your api call
        }
      />
    </>
  );
}

To create a multi step form just add multiple templates to the template prop array

const step1: Template = {
    config: [
      {
        type: "textfield",
        name: "name",
        fieldProps() {
          return { variant: "filled" };
        },
      },
    ],
  };

  const step2: Template = {
    config: [
      {
        type: "switch",
        name: "boolean",
      },
    ],
  };

  return (
    <FormBuilder
      template={[step1, step2]}
      onSubmit={(data) => console.log(data)}
    />
  );
}

We welcome contributions! If you have suggestions or encounter issues, please open an issue or submit a pull request.

blitz-form-builder is licensed under the MIT License.

Happy form building! 🚀