I'm newly using Formik library for forms and I ran into problem. I'm not sure how can I handle state with array of objects from inside the component. I know about setValues and setFieldValue methods.. also about FieldArray but my target is to add newZone into newZones array when I click on add button and I don't want to render it. I want to customize rendering and place it under accordion.
sandbox here: https://codesandbox.io/s/rough-haze-zdlw9?file=/src/App.js
Will I need all custom handlers? Will I need to use local state inside component and then use setFieldValue to set state? Or can I somehow use FieldArray in there without rendering?
Thank you
You are using React-Bootstrap components instead Formik components, so you must manually assign handleChange and value props to every input component. You also have to call setFieldValue() when user clicks button Add.
Example:
https://codesandbox.io/s/quirky-leaf-tr3rv
Related
In my REACT application, I'm trying to render a Component programmatically, but pasing to it any REACT context. Let me show you a simple example with this sandbox: https://codesandbox.io/s/kind-carson-u0hup?file=/src/App.tsx
As you can see, what I want to do is rendering <Dialog> programmatically when I click a button. But, inside that <Dialog>, I want to use any context created on the React Tree.
Unfortunately, I am aware that React.render does not pass any context, thus this cannot work: if you click on the button, you will see that, while the context in <InnerComponent> provides the value 'FooBar'. inside <Dialog> I have the default value 'initialValue'.
Thus, the question is, is there any way I can programmatically render a component, AND passing to its any kind of context?
I'm aware that React.createPortal does pass the context, but that method MUST be called inside the return statement of a component, while instead, in my case, I render the <Dialog> after a click on the Button.
Also, yes, I could always have the <Dialog> rendered, and use a prop isVisible.. But this is a simpler example.
I've read several things (some of these in the following links), but none of these really helped me:
https://github.com/facebook/react/issues/17974
Is it possible to pass context into a component instantiated with ReactDOM.render?
Why component rendered with ReactDOM.render loses react-redux context (Provider)
You can not put the render of component outside of your ContextProvider.
Check this link:
https://codesandbox.io/s/busy-curran-pbz6p?file=/src/App.tsx:0-834
I am currently using antd-form-builder to build multiple JSON forms for different components and I have an issue with antd trying to use a checkbox to disable another input.. basically I have a function that returns the form meta fields and then in the onChange for the checkbox I am trying to set another field to become disabled
what I have managed to find so far is for the form ref there is a setFields function and I can use this to change the value of another field or the errors on that field through the onChange of the checkbox, however, I cannot change the disabled state of another field.
turns out, this cant be done .. and state variables should be used as mentioned in the issue here
In my react app I used Formik form helper but it add area-autocomplete="list", when I try to add that prop react change my added value to "list" again on Focus. Even functions that change that prop didn't help.
I have used the following component in react,
https://www.npmjs.com/package/react-multiselect-checkboxes
I want to clear selected checkboxes because I have to recreate it with new options from another dropdown change event.
So is there any way from where I can clear selected checkboxes from parent component when another dropdown is changed
This is for react
The author of the libarary suggest that its behavior is based on react-select
Have you tried to use value prop?
see https://github.com/JedWatson/react-select#controllable-props
Additionally if you want to manipulate values in parent component you should use onChange callback then and store it somewhere (I assume state will be best place)
I'm using Semantic-React and I have component-filter which consists of checkbox groups. Every checkbox has id and I must pass them in order to filter the results.First idea was to perform method which would be called after checkbox onCLick(which would pass checkbox id). And in this method set in state an object and after every checkbox click change it. I remember, that in Jquery exists $('form').serialize() which everytime checks form elements and gets checked values automaticaly. Exists something like this in react, or semantic-ui react? I would be simplier to use such method than to create and control object in state
You should use "controlled components":
Filter component should keep a set of checked ids as part of state.
Checkbox checked property should be set to true if the set contains box id (and to false otherwise) in Filter component render.
Checkbox onChange should be handled by filter component and modify state.
Filter can access it's state handling checkbox onChange or button "Apply" onClick (or any other event handled by Filter component).
Be careful: setState is an async function and directly reading other component state can lead to data race, so state must be read after proper event fired by React. Also there are a bunch of state-keepers like Redux.
It is described in official docs here: https://reactjs.org/docs/forms.html