Redux form

Description

The REGARDS frontend uses the redux-form library to create forms. This library stores in the common redux store all informations about the current state of the form.

How to use

Simple example

import { reduxForm } from 'redux-form'
import { RenderTextField, Field, ErrorTypes, ValidationHelpers } from '@regardsoss/form-utils'

export class ExampleComponent extends React.Component {

  componentDidMount() {
    const initialValues = {
      // initialize the form field named 'label'
      label: 'default label',
    }
    this.props.initialize(initialValues)
  }

  handleSubmit(formValues) {
    ...
  }

  render() {
    return (
      { /* 
       Form with onSubmitMethod: onSubmit is first delegated to redux handleSubmit method that calls this.handleSubmit after execution. That mechanism allows Redux forms to compute mulitple state variable (pristine, invalid, submitting...)
       */ }
      <form onSubmit={this.props.handleSubmit(this.handleSubmit)}> 
        <Field
          name="label" // field name
          component={RenderTextField} // field render component
          type="text" // field type
          label="Label" // field label to display at user
          validate={ValidationHelpers.validRequiredString} // validator: computes if the field value is valid
          fullWidth // field consumes parent full width, quite standard in REGARDS frontend
        />
      </form>
    )
  }
}

/* export the field as connected: reduxForm method will decorate ExampleComponent to add many properties like:
 * pristine: has the form changed?
 * submitting: is the form currently submitting?
 * invalid: is there an invalid field in form?
 * handleSubmit: submit method wrapper
 * ...
 */ 
export default reduxForm({
  form: 'example-form' // form name in redux store
})(ExampleComponent)

REGARDS form-utils

In the upper example you can see that each Field component use a component parameter to define the field render. The REGARDS library @regardsoss/form-utils provides the following render components types :

• RenderArrayObjectField : Render a field to configure an array of objects
• RenderArrayTextField : Render a field to configure an array of strings
• RenderAutoCompleteField: Render a field to configure a single value with auto completion
• RenderCheckbox: Render a boolean checkbox field
• RenderDateTimeField: Render a date time field
• RenderDoubleLabelToggle: Render a boolean toggle field with double labels field
• RenderFileFieldWithMui : Render a field to upload a file from the local user system
• RenderJsonCodeEditorField : Render a field to configure a complex json object within a JSON editor
• RenderMapField : Render a field to configure a Map of objects
• RenderPageableAutoCompleteField : Render a field to configure a single value with auto completion by fetching pageable server endpoint
• RenderRadio: Render a choice field as radio
• RenderSelectField: Render a choice field as list input
• RenderTextField: Render a string field as input
• RenderToggle: Render a boolean field as simple label toggle
• RenderFieldArray: Render an array of field

Those components can be imported from @regardsoss/form-utils, like shown below:

import { RenderTextField, RenderToggle, RenderDoubleLabelToggle } from `@regardsoss/form-utils`

More

To understand more about using redux-form library see the API official documentation