Beginner’s Tutorial: Combine Redux Form in React Native App

Practically every application contains a form for processing input data. Forms empower you to completely associate with the web app by giving feedback or interacting with it.

When using React Native patterns, you need to maintain the position of each data field, assure that all domains are validated by user input, and control the submission function after completing the Form. Starting from the beginning may take longer and increase your workload.

This is the first part of a two-part tutorial series; we will integrate Redux Forms into your React Native application using examples. Then, in the second part, we dive into the Redux form and use Redux middleware and Redux Head to toe to implement the login module.

Therefore, without further ado, let's start with a quick tutorial.

Introduction to Redux Form

First, let us begin by understanding what Redux Form is. React redux Form is an effective form management method based on Redux. It is a high-level component that applies React redux behind the scenes to manipulate HTML React forms and make sure it handles Redux to store data. Reduxform includes the following components for generating applications:

• Redux Reducer: Manage and manage the Redux form status by monitoring the sent activities.

• React Element Decorator: Include the complete form in the HOC and implement functionality through attributes.

• Field components: Use Redux Store Action Builders to attach specific data fields

• Action Creators: Interact with information throughout the application.

Steps to implement Redux Form in a native React application:

It's time to create a demo app. Let's code manually to execute a React Native report using the redux Form. Follow the steps below to perform a short form in your React Native application.

Add the Redux Form set to your design.

$ yarn add redux-form

# or, using npm:

$ npm install redux-form

We will firstly ship the reducer from the redux form package to our application store.

import { createStore , combineReducers } from 'redux';

import { reducer as formReducer } from 'redux-form';

const rootReducer = combineReducers({

form : formReducer

})

const store = createStore(rootReducer)

export default store

2. Field component and handle submit.

To use the Redux Form field component, we must wrap a folder around TextInput. The container administers the callback and applies the value reflected by the redux form to closely track and update the state of the form. This box transfers some accessories to your packaging components. These attachments presented by redux form are distributed into data objects and meta objects.

import React from 'react'

import { Text, View , TextInput } from 'react-native'

const FormInput = (props) => {

const { touched , error } = props.meta

const isErrorVisible = () => {

return touched && error

? {error}

: null

}

return (

{props.label}

{isErrorVisible()}

)

}

export default FormInput

3. Field Level Persuasion

We can implement functions for validation in the verify attribute of the Field Component.

value ? undefined : 'Name is required'

]}

/>

4. Reset form

The reset function is implemented by redux form as an add-on to MyFormScreen. Using this function, we can reset the information.

5. Obtaining the form values in different component

To access the reported value in a different element, we will use a modal to display the form data; it will use the formValueSelector API to facilitate the connection () and the form utility, it will generate a selector function that will get the field title and restore the appropriate all The value of the stated form.

To conclude, we looked at a simple and primary example of a simplified form of a React Native app. Watch the tutorial to learn deeper about simple Redux forms in React Native application. At the same time, you can additionally attend the React Native tutorial for more walkthroughs and tutorials.