formik | Build forms in React , without the tears | Frontend Utils library
kandi X-RAY | formik Summary
kandi X-RAY | formik Summary
Build forms in React, without the tears 😭
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of formik
formik Key Features
formik Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyconst formik = useFormik({
initialValues:{
name:""
},
onSubmit: values => {
console.log(values.name);
}
});
import CustomFormGroup from "../utils/CustomFormGroup";
import Form from "antd/lib/formconst initValues = {
...savedTask,
assignTo: personList.filter(person => savedTask.assignTo.some(obj => obj.id === person.id))
};
const formik = useFormik({
initialValues: initValues,
onSubmit: (values) => {
consolenpm i formik
const App = () => {
const validate = (values) => {
const errors = {}
if (!values.title) {
errors.title = 'Required'
}
return errors
}
const formik = useFormik({
initialValues: {
const handleOptionalChange = (form) => {
setOptional(!optional)
form.setFieldValue('optionalComments', '', false)
}
{({ field, form }) => (
handleOptionalChange(form)}
n// State var to keep option array
const [frequencyDayValues, setFrequencyDayValues] = useState([]);
...
// On initialization, set your option array (with whatever logic needed,
// e.g. populateOptions() for an initial code of 55)
useEff const formik = useFormik({
initialValues,
validationSchema,
onSubmit: (values, { resetForm }) => {
dispatch(userActions.register(values, { resetForm }))
},
validateOnChange: false,
validateOnBlur: true
Yup.object().shape({title: Yup.string().required("Please Insert")});
handleChange()
setFieldValues(fieldName,value) //Definitely From Formik props
{
handleSubmit(values, actions);
actions.setSubmitting(true);
}}
>
{({ isSubmitting }) => (
//...Other Formik components
{
// call what you want
// call formik handleSubmit after
formikProps.handleSubmit()
}}
/>
Community Discussions
Trending Discussions on formik
QUESTION
I want to validate user input asynchronously. For example, to check if email already exists, and perform validation while the user typing. To decrease API calls I'd like to debounce API calls with lodash or custom debounce function and to perform validation when the user stops typing.
So far this is my form right now. The issue is that it doesn't work as intended. It looks that denounced function returns a value from the previous call, and I can't understand where is the problem.
You can see a live example here: https://codesandbox.io/s/still-wave-qwww6
...ANSWER
Answered 2021-Nov-10 at 15:42It looks that denounced function returns a value from the previous call
This is how lodash debounce is supposed to work:
Subsequent calls to the debounced function return the result of the last func invocation.
SEE: https://lodash.com/docs/4.17.15#debounce
You could set validateOnChange to false and then call formik.validateForm manually as a side effect:
QUESTION
I have a simple component see below, that basically attempts to grab some data from the formik FormContext using the useFormikContext hook.
However when attempting to write unit tests for this component it wants me to mock the hook which is fine, however, mocking the hook with typescript means returning well over 20 properties most of which are a variety of methods and functions.
Has anyone found a better way of doing this? Just seems a bit annoying even if I get it to work as I only need 1 field from the hook.
Component
...ANSWER
Answered 2021-Dec-22 at 13:29I resolved this issue not 100% sure it is the best solution but have posted here in case it helps anyone with a similar issue.
I basically overwrote the FormikType allowing me to ignore all of the fields and methods I wasn't using, it clearly has some drawbacks as it is removing the type-safety, but I figured since it was only inside the unit test it is somewhat okay.
Import
QUESTION
I have to set Formik to something like
...ANSWER
Answered 2022-Mar-07 at 13:57Yo can just do
QUESTION
I'm working on React based on NextJS code.
If I manually enter values in form fields and submit the form, I get all the values in the component function.
But if I dynamically display values in a form field like value={query.campaignid}, the component does not collect any value.
ANSWER
Answered 2022-Feb-25 at 15:24Resolved!
I passed the URL query to initialValues and added enableReinitialize={true} below:
QUESTION
I have one function that validates that neither input field A nor input field B are empty and with the way my form is built I have to write only one function to check both. (The actual function is much more complicated so I opted to create the example function below)
this is my test function:
...ANSWER
Answered 2022-Feb-10 at 11:37You can use ValidationError from Yup to achieve this goal. The constructor of ValidationError accepts array of other ValidationError instances. The individual ValidationError instances are capable of holding path and error message and the parent instance will combine them.
Here's the example test function:
QUESTION
I am planning to add React-slick library into my nextjs project for image slider, but getting an issue
Tries installing "react-slick" and "slick-carousel" as mentioned in the docs by
...ANSWER
Answered 2021-Sep-22 at 23:05Just removed the tilde prefix
QUESTION
ANSWER
Answered 2022-Jan-23 at 14:57After hours of exploring the internet i couldn't get the answer of my problem, but debugging the code i found the problem. Actually it was one extra trailing slash in URL which made it to misbehave. I was like this before.
The correct version will be.
EXTRA NOTE: All those who have not found the solution from here should move forward to this link and look for trailing slash if found in your current URL, for making successful proxy you need to eliminate that trailing slash at the end of URL.
QUESTION
i have regex function like this:
...ANSWER
Answered 2022-Jan-11 at 23:22Replace beforehand all occurrences of hyphen "-" with "" (empty string)
QUESTION
I got a problem with MUI Select (multiple) inside a Formik form.
Suppose that I have a task stored in database with taskName, assignTo (array of staff).
Now I'm trying to make a form where I can update/change assignTo values.
So the form got initialValues with:
ANSWER
Answered 2022-Jan-11 at 11:30From the Select API page(value prop):
...
If the value is an object it must have reference equality with the option in order to be selected. If the value is not an object, the string representation must match with the string representation of the option in order to be selected.
savedTask.assignTo and personList have different object references even if they have the same value, so you have to use Array.filter to have the initial value of assignTo from personList like this:
QUESTION
In password field if I give "Password@345" its accepted and right but if I give "Password @ 345" its also accepted but its should not accepted because condition is there is no whitespace, how to remove the whitespace that if I type password with whitespace it should give error.
...ANSWER
Answered 2021-Dec-21 at 05:38By using yup you can define multiple match on your schema, so in your issue, you can define a separate match to check if password contains space or not and then apply other validation terms. like below example:
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