For dirty fields, the errors are displayed immediately. When a field gets focus for the first time and the value is changed, the errors are displayed only after the field loses focus. There are others who participate in reviews, but the author seems to be the most active with others far behind him. React Final Form is a thin React wrapper for Final Form, which is a subscriptions-based form state management library that uses the Observer pattern, so only the components that need updating are re-rendered as the form's state changes. Overwhelming majority of code has been written by the author. There are 201 opened issues and 61 opened PRs at the time of writing this post. Though there are suggestions for workarounds, we will not see a proper solution any time soon.Įven though array fields are supported, the errors for array fields are missing. It is not possible to validate form on initial render. I also tried a more complex form with nested fields and resetting for foreman_templates.įormik passes only onBlur and onChange handlers to the form field, while redux-form additionally has onDragStart, onDrop, onFocus As React is component based this can be achieved by including each step in an individual component. Breaking up large forms into multiple steps makes them less daunting for the user to complete. So it looks like wizards are possible, I haven’t tried to create one myself. In this tutorial we’ll be setting up a multi-step form (also called a wizard form) component in React. Wizard forms - there is an official example how to do a wizard form, some people even roll out their own solutions based on formik ( here and here). It should be possible to have additional abstraction with HOC, but I left things intentionally as a bare-bones example.Ĭustom components - about as difficult as with redux-form, all I needed to do was replace Field component from redux-form with the one from formik in our TextField component.Įxtensible forms - we would need to add initial state for the additional fields to the Formik component, fields themselves can be added with slot-fill I replaced redux-form with formik in bookmarks form in an attempt to figure out whether it is a viable replacement.ĭifficulty to switch - low, the changes are mostly limited to the bookmarks form itself.
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