Error datePicker

Good morning, I'm having a problem using DatePicker.

When I use inside a modal it presents this error,

however, out of the modal works perfectly

React Version:  "16.4.1",

 

Invariant.js: 42 Uncaught Error: The ref element was specified as a string, but was never defined. This can happen for one of the following reasons: 1. You may be adding one or a functional 2. You may be adding a component that was not created within the rendering method of a component 3. You have multiple copies of React loaded

My code:

index.js

importar Reagir de 'reagir';
importar o ReactDOM de 'react-dom';
import './index.css';
import 'font-awesome / css / font-awesome.min.css';
import 'bootstrap / dist / css / bootstrap.min.css';
import 'mdbreact / dist / css / mdb.css';
importar App de './App';
import registerServiceWorker de './registerServiceWorker';
ReactDOM.render (<App />, document.getElementById ('root'));
registerServiceWorker ();


Modal.js

importar Reagir de 'reagir';
import {Contêiner, Botão, Modal, ModalBody, ModalHeader, ModalFooter} de 'mdbreact';
import SelectDate de './DatePicker';
class myModal extends React.Component {
construtor (props) {
super (adereços);
this.state = {
modal: verdadeiro
};
this.toggle = this.toggle.bind (isso);
}
alternancia() {
this.setState ({
modal:! this.state.modal
});
}
render () {
Retorna (
<Contêiner>
<ModalisOpen = {this.state.modal} toggle = {this.toggle}>
<ModalHeadertoggle = {this.toggle}> título do Modal </ ModalHeader>
<ModalBody>
<SelectDate> </ SelectDate>
</ ModalBody>
<ModalFooter>
</ ModalFooter>
</ Modal>
</ Container>
);
}
}
exportação padrão myModal;

DatePicker.js

 

importar Reagir de 'reagir';
import MuiThemeProvider de 'material-ui / styles / MuiThemeProvider';
import DatePicker de 'material-ui / DatePicker';
classe SelectDate estende React.Component {
componentDidMount () {
letdatePickerHr = document.querySelector ('. datepicker-wrapper'). getElementsByTagName ('hr') [0];
datePickerHr.style.border = "nenhum";
}
render () {
Retorna (
<divclassName = "contêiner mt-5">
<divclassName = "md-form">
<MuiThemeProvider>
<divclassName = "datepicker-wrapper">
<DatePickerstyle = {{borderBottom: '1px solid #bdbdbd', altura: '3rem'}} id = "datepicker" textFieldStyle = {{largura: '100%'}} hintText = "Data selecionada"> </ DatePicker>
</ div>
</ MuiThemeProvider>
</ div>
</ div>
);
}
};
exportar SelectDate padrão;

App.js

import React, {Component} from 'react';
import './App.css';
import {Button} de 'mdbreact';
import Modal de './Modal.js';
class App estende o componente {
construtor (props) {
super (adereços);
this.state = {
modal: true
};
}
abrir = () => {
this.setState ({modal: true})
console.log ("estado")
}
render () {
Retorna (
<divclassName = "App">
<divclassName = "md-form">
<Modal
modal = {this.state.modal}
> </ Modal>
</ div>
<ButtononClick = {this.abrir}> Abrir o Modal </ Button>
</ div>
);
}
}
exportar App padrão;

Jakub Mandra answered 2 months ago

Hello,

we did some updates and that could cause the problem with integration.
I recommend you to do what follows:
1. remove "mdbreact" from dependencies in package.json
2. run yarn or yarn install in console
3. bring back "mdbreact" into package.json -> dependencies
4. run yarn or yarn install
5. yarn start

I hope the bug will be fixed then.
Don`'t hesitate to contact with us if problem still accurs.

Here is better tutorial on how to install mdb pro if needed:
https://mdbootstrap.com/react/5-min-quick-start/
(look into install via Yarn / NPM, tuck PRO).

Best regards,
Jakub from MDB


master@mastersistemas.net commented 2 months ago

Thank you very much, it's working perfectly. But now a visual bug has appeared.
https://ibb.co/cmAauJ

I'm looking for a way to solve it, but if you have any idea it's welcome.


Buenos Dias David,

Please submit support request in the Support Board number one language - English. Translating issues should be easier and quicker on your end. Thanks.

With Best Regards,
Kuba


master@mastersistemas.net commented 3 months ago

Hi Jakub, good morning


Jakub Strebeyko commented 3 months ago

Hello. Both error message and the code to be pasted are still in Spanish. I am not sure what kind of help are you expecting - could you clarify?


master@mastersistemas.net commented 3 months ago

Sorry, i forgot. could check again. I believe everything is now in English


Jakub Strebeyko commented 3 months ago

Well, it is not, which it makes the whole thing impossible to debug remotely. I also don't fully grasp your take on the error message translation, which is essential - these logs usually provide a lot of insight into what failed.
Anyway, I tried to make it up myself, meaning taking the Date Picker and inserting it into a Modal. There is a componentDidMount() lifecycle hook method to deal with styling - and fails, as in this case it is trying to querySelector() an element which is not displayed (as it's in the modal), which usually shall generate errors. Outside of this, Date Picker in a modal works OK on my end.
Please do not hesitate to contact me or anyone of the Team if you come up with some useful clues, or, which I wish you wholeheartedly, figure it out.

With Friendly Regards,
Kuba


I'm sorry Jakub, but you commented that the component in question works inside
a modal, I tried several ways and could not get it to work.

Could you give me a functional example where it is used within a modal.

Why do I always get into the same mistake.

Element ref was specified as a string (input) but no owner was set. This could happen for one of the following reasons: 1. You may be adding a ref to a functional component 2. You may be adding a ref to a component that was not created inside a component's render method 3. You have multiple copies of React loaded See https://fb.me/react-refs-must-have-owner for more information.

See https://fb.me/react-refs-must-have-owner for more information.
at invariant (invariant.js:42)
at coerceRef (react-dom.development.js:11886)
at createChild (react-dom.development.js:12091)
at reconcileChildrenArray (react-dom.development.js:12341)
at reconcileChildFibers (react-dom.development.js:12655)
at reconcileChildrenAtExpirationTime (react-dom.development.js:13015)
at reconcileChildren (react-dom.development.js:13006)
at updateHostComponent (react-dom.development.js:13340)
at beginWork (react-dom.development.js:13828)
at performUnitOfWork (react-dom.development.js:15863)
at workLoop (react-dom.development.js:15902)
at HTMLUnknownElement.callCallback (react-dom.development.js:100)
at Object.invokeGuardedCallbackDev (react-dom.development.js:138)
at invokeGuardedCallback (react-dom.development.js:187)
at replayUnitOfWork (react-dom.development.js:15310)
at renderRoot (react-dom.development.js:15962)
at performWorkOnRoot (react-dom.development.js:16560)
at performWork (react-dom.development.js:16482)
at performSyncWork (react-dom.development.js:16454)
at requestWork (react-dom.development.js:16354)
at scheduleWork$1 (react-dom.development.js:16218)

 

Thank you very much for your attention.


Hi,

I've prepared working example of DatePicker inside modal for You:

 

import React from 'react';
import { Container, Button, Modal, ModalBody, ModalHeader, ModalFooter } from 'mdbreact';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
import DatePicker from 'material-ui/DatePicker';
class ModalPage extends React.Component {
constructor(props) {
super(props);
this.state = {
modal: false
};
this.toggle = this.toggle.bind(this);
}
toggle() {
this.setState({
modal: !this.state.modal
});
}
render() {
return (
<Container>
<h4 className="mt-4">Basic example</h4>
<Button color="danger" onClick={this.toggle} >Modal</Button>
<Modal isOpen={this.state.modal} toggle={this.toggle}>
<ModalHeader toggle={this.toggle}>Modal title</ModalHeader>
<ModalBody>
<MuiThemeProvider>
<div className="datepicker-wrapper">
<DatePicker style={{borderBottom: '1px solid #bdbdbd', height: '3rem'}} id="datepicker" textFieldStyle={{width: '100%'}} hintText="Selected date" ></DatePicker>
</div>
</MuiThemeProvider>
</ModalBody>
<ModalFooter>
<Button color="secondary" onClick={this.toggle}>Close</Button>{' '}
<Button color="primary">Save changes</Button>
</ModalFooter>
</Modal>
</Container>
);
}
}
export default ModalPage;

 

Best Regards


Good morning Mikołajm, thank you for your attention. But the same mistake happened.

×

1 of 2 errors on the page
Element ref was specified as a string (input) but no owner was set. This could happen for one of the following reasons: 1. You may be adding a ref to a functional component 2. You may be adding a ref to a component that was not created inside a component's render method 3. You have multiple copies of React loaded See https://fb.me/react-refs-must-have-owner for more information.


Modal.renderIntoSubtree
  16229 | }, {
  16230 |   key: 'renderIntoSubtree',
  16231 |   value: function renderIntoSubtree() {
> 16232 |     _reactDom2.default.unstable_renderSubtreeIntoContainer(this, this.renderChildren(), this._element);
  16233 | 
  16234 |     // check if modal should receive focus
  16235 |     if (this._focus) {
Modal.show

D:/GitPro/re-pro/dist/mdbreact.js:16205

  16202 | 
  16203 |     document.body.className = (0, _utils.mapToCssModules)((0, _classnames2.default)(classes, 'modal-open'), this.props.cssModule);
  16204 | 
> 16205 |     this.renderIntoSubtree();
  16206 |   }
  16207 | }, {
  16208 |   key: 'renderModalDialog',


My code:

App.js

import React, { Component } from 'react';

import Modal from './ModalPage';

class App extends Component {

constructor(props) {

super(props);

this.state= {

}

}

render() {

return (

<divclassName="App">

<Modal></Modal>

</div>

);

}

}

export default App;

index.js

import React from 'react';

import ReactDOM from 'react-dom';

import './index.css';

import 'font-awesome/css/font-awesome.min.css';

import 'bootstrap/dist/css/bootstrap.min.css';

import 'mdbreact/dist/css/mdb.css';

import App from './App';

ReactDOM.render(<App />, document.getElementById('root'));

 

ModalPage.js

import React from 'react';

import { Container, Button, Modal, ModalBody, ModalHeader, ModalFooter } from 'mdbreact';

import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';

import DatePicker from 'material-ui/DatePicker';

class ModalPage extends React.Component {

constructor(props) {

super(props);

this.state= {

modal:false

};

this.toggle=this.toggle.bind(this);

}

toggle() {

this.setState({

modal:!this.state.modal

});

}

render() {

return (

<Container>

<h4className="mt-4">Basic example</h4>

<Buttoncolor="danger"onClick={this.toggle}>Modal</Button>

<ModalisOpen={this.state.modal}toggle={this.toggle}>

<ModalHeadertoggle={this.toggle}>Modal title</ModalHeader>

<ModalBody>

<MuiThemeProvider>

<divclassName="datepicker-wrapper">

<DatePickerstyle={{ borderBottom:'1px solid #bdbdbd', height:'3rem' }}id="datepicker"textFieldStyle={{ width:'100%' }}hintText="Selected date"></DatePicker>

</div>

</MuiThemeProvider>

</ModalBody>

<ModalFooter>

<Buttoncolor="secondary"onClick={this.toggle}>Close</Button>{' '}

<Buttoncolor="primary">Save changes</Button>

</ModalFooter>

</Modal>

</Container>

);

}

}

export default ModalPage;

I followed your example, but the same error


Jakub Mandra answered 2 months ago

I see some unnecessary code which does that ugly effect:

<DatePicker style={{ borderBottom:'1px solid #bdbdbd', height:'3rem' }}i d="datepicker" textFieldStyle={{ width:'100%' }} hintText="Selected date"></DatePicker>

Remove style borderBottom - that will fix the problem :)

 

Regards,

Jakub from MDB


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  • User: Pro
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  • Technology: React
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