I'm trying to get element by class name with Sencha Touch
itemswipe: function(dataview, index, element, e) {
console.log(element.select('.x-list-disclosure'));
}
but it returns this error:
TypeError: Result of expression 'element.select' [undefined] is not a function.
Here is the full code block
var list1 = new Ext.List({
flex: 1,
cls: 'list_simple',
sorters: ['firstName', 'group'],
itemTpl: '{firstName} {lastName}',
grouped: true,
groupTpl : [
'<tpl for=".">',
'<div class="x-list-group x-group-{id}">',
'<h3 class="x-list-header"><div class="header">{group}</div></h3>',
'<div class="x-list-group-items">',
'{items}',
'</div>',
'</div>',
'</tpl>'
],
onItemDisclosure: function(record, btn, index) {
Ext.Msg.alert('Tap', 'Disclose more info for ' + record.get('firstName') + ' ' + record.get('lastName'), Ext.emptyFn);
},
listeners: {
itemtap: function(dataview, index, element, e) {
console.log('node is tapped');
},
itemswipe: function(dataview, index, element, e) {
console.log(element.select('.x-list-disclosure'));
}
},
store: store
});
(Added) This is the generated elements of {items}:
<div class="x-list-group-items">
<div class="x-list-item x-item">
<div class="x-list-item-body">Melvin Gilbert</div>
<div class="x-list-disclosure"></div>
</div>
<div class="x-list-item x-item">
<div class="x-list-item-body">Jeaffrey Gilbert</div>
<div class="x-list-disclosure"></div>
</div>
</div>
Any ideas?
Wrap your element variable with a call to Ext.fly and it will give you an Ext.Element representation of the dom element. The element variable is a DOM node rather than an Ext.Element instance. So it becomes Ext.fly(element).select('..')
Related
I want to write in less code a function that will add the active classname and automatically removes all the other active class names. But there is also a unique class name needed for JavaScript in my case. But want to put that all in class name. How can I make this a valid classname. Is there a way to do that so it will not conflict with each other.
<ul class="three">
<li
v-for="(post, index) in listData.data"
:key="index"
:class="'list-item unordered-list ' + post.name.toLowerCase() + { active : activeName == post.name}"
#click="showInfo(post.name, post.description)">
{{ post.name }}
</li>
</ul>
Have a look at the object syntax or array syntax of class binding, which allows binding to an object or array returned by a value. That way you can simplify complex class or style combinations by calling a function from the template, like the example from the docs:
<div v-bind:class="classObject"></div>
...
data: {
isActive: true,
error: null
},
computed: {
classObject: function () {
return {
active: this.isActive && !this.error,
'text-danger': this.error && this.error.type === 'fatal'
}
}
}
<ul class="three">
<li
v-for="(post, index) in listData.data"
:key="index"
:class="['list-item', 'unordered-list ', post.name.toLowerCase(), { active: activeName == post.name }]"
#click="showInfo(post.name, post.description)">
{{ post.name }}
</li>
</ul>
Given the parent component, I am using a child component DynamicFieldSet that is a grouping of FormItems. But I am receiving the error:
Warning: validateDOMNesting(...): <form> cannot appear as a descendant of <form>. See CreateTopic > Form > form > ... > DynamicFieldSet > Form > form.
I have tried to remove the <Form> </Form> tags in my child component, but then it is a compile error.
Is there a way I can disable rendering of the child Form view?
Parent component
class CreateTopic extends React.Component {
render() {
return (
<div className="create-topic-container">
<h3>Create an event</h3>
<Form onSubmit={this.handleSubmit}>
<FormItem>...</FormItem>
<FormItem>...</FormItem>
<FormItem>...</FormItem>
<FormItem
{...formItemLayout}
label="Results"
style={{ marginBottom: SPACING_FORM_ITEM }}
>
{getFieldDecorator('results', {
rules: [
{
required: true,
message: 'Results cannot be empty.',
},
],
})(<DynamicFieldSet
form={this.props.form}
/>)}
</FormItem>
</Form>
</div>
);
}
}
DynamicFieldSet - Child component
export class DynamicFieldSet extends React.Component {
render() {
getFieldDecorator('keys', { initialValue: ['0', '1'] });
const keys = getFieldValue('keys');
const formItems = keys.map((k, index) => {
return (
<FormItem
{...formItemLayoutWithOutLabel}
required={false}
key={k}
>
{getFieldDecorator(`results[${k}]`, {
validateTrigger: ['onChange', 'onBlur'],
rules: [
{
required: true,
whitespace: true,
message: 'Result name cannot be empty.',
},
{
validator: this.validateLength,
},
],
})(<Input placeholder={`Result #${index + 1}`} style={{ width: '80%', marginRight: 8 }} />)}
{keys.length > 2 ? (
<Icon
className="dynamic-delete-button"
type="minus-circle-o"
disabled={keys.length === 1}
onClick={() => this.remove(k)}
/>
) : null}
</FormItem>
);
});
return (
<Form>
{formItems}
<FormItem {...formItemLayoutWithOutLabel}>
{keys.length < 10 ? (
<Button type="dashed" onClick={this.add} style={{ width: '80%' }}>
<Icon type="plus" />Add Result
</Button>
) : null}
</FormItem>
</Form>
);
}
}
I faced this issue when using ant design table and turns out its not ant design which throws the warning. It's the web standards description
"Every form must be enclosed within a FORM element. There can be several forms in a single document, but the FORM element can't be nested."
So, there should not be a form tag inside a form tag.
To solve the issue (in our case), remove the Form tag inside the DynamicFieldSet "return" and replace with a div tag
Hope it helps :)
You can portal a form like this:
import Portal from '#material-ui/core/Portal';
const FooComponent = (props) => {
const portalRef = useRef(null);
return <>
<form>
First form
<div ref={portalRef} />
</form>
<Portal container={portalRef.current}>
<form>Another form here</form>
</Portal>
</>;
}
In the example above I use the react material-ui Portal component. But you can try to implement it with React Portals as well
If you're using MUI, the Box component contains an attribute that identifies them as any native HTML container; form is one of them. E.g:
<Box
xs={6}
sx={{
"& > :not(style)": { m: 1, width: "25ch" },
}}
component="form"
noValidate
autoComplete="off"
>
In such case, we just need to delete that attribute, it will default to a DIV. The form will continue to work as expected, and the error will disappear off the console.
In my case this is occur bcoz of i declared <form> inside another <form/> tag.
This is a bit longwinded so I'll do my best to explain clearly.
I'm making a simple poll app and on the home page is an array of polls where you can vote on each poll.
Each poll is on a card and there will be different radio buttons representing the different voting options for that poll.
I'm trying to set up a form for each poll which contains radio button inputs for each of the different options and push that onSubmit to an action creator.
However, I would also like to pass that title of the poll as well as an argument to the action creator so that I can create a single action creator that will help me submit the votes for all the polls. Something like submitVote(title, option).
Here is my polls page:
import React, { Component } from 'react';
import { connect } from 'react-redux';
import * as actions from '../../actions';
import Loading from '../Loading';
class MyPolls extends Component {
constructor(props) {
super(props);
this.state = {
skip: 0,
isLoading: true,
isLoadingMore: false,
value: ''
};
this.handleSubmit = this.handleSubmit.bind(this);
this.handleChange = this.handleChange.bind(this);
}
componentDidMount() {
this.props.fetchMyPolls(this.state.skip)
.then(() => {
setTimeout(() => {
this.setState({
skip: this.state.skip + 4,
isLoading: false
});
}, 1000);
});
}
sumVotes(acc, cur) {
return acc.votes + cur.votes
}
loadMore(skip) {
this.setState({ isLoadingMore: true });
setTimeout(() => {
this.props.fetchMyPolls(skip)
.then(() => {
const nextSkip = this.state.skip + 4;
this.setState({
skip: nextSkip,
isLoadingMore: false
});
});
}, 1000);
}
handleSubmit(e) {
e.preventDefault();
}
handleChange(event) {
console.log(event.target.value);
this.setState({ value: event.target.value });
}
renderPolls() {
return this.props.polls.map(poll => {
return (
<div className='card' key={poll._id} style={{ width: '350px', height: '400px' }}>
<div className='card-content'>
<span className='card-title'>{poll.title}</span>
<p>Total votes: {poll.options.reduce((acc, cur) => { return acc + cur.votes }, 0)}</p>
<form onSubmit={this.handleSubmit}>
{poll.options.map(option => {
return (
<p key={option._id}>
<input
name={poll.title}
className='with-gap'
type='radio'
id={option._id}
value={option.option}
onChange={this.handleChange}
/>
<label htmlFor={option._id}>
{option.option}
</label>
</p>
)
})}
<button
type='text'
className='activator teal btn waves-effect waves-light'
style={{
position: 'absolute',
bottom: '10%',
transform: 'translateX(-50%)'
}}
>
Submit
<i className='material-icons right'>
send
</i>
</button>
</form>
</div>
<div className='card-reveal'>
<span className='card-title'>{poll.title}
<i className='material-icons right'>close</i>
</span>
<p>
dsfasfasdf
</p>
</div>
</div>
)
})
}
render() {
return (
<div className='center-align container'>
<h2>My Polls</h2>
{this.state.isLoading ? <Loading size='big' /> :
<div style={{ display: 'flex', flexWrap: 'wrap', justifyContent: 'space-evenly', alignItems: 'center', alignContent: 'center' }}>
{this.renderPolls()}
</div>}
<div className='row'>
{this.state.isLoadingMore ? <Loading size='small' /> :
<button
className='btn red lighten-2 wave-effect waves-light' onClick={() => this.loadMore(this.state.skip)}>
Load More
</button>}
</div>
</div>
);
}
}
function mapStateToProps({ polls }) {
return { polls }
}
export default connect(mapStateToProps, actions)(MyPolls);
Demo of the app so far: https://voting-app-drhectapus.herokuapp.com/
(use riverfish#gmail.com and password 123 to login).
Github repo: https://github.com/drhectapus/Voting-App
I'd like to program it so that when form is submitted via this.handleSubmit, the handleSubmit function can take 2 arguments, title and option and pass that onto an action creator in redux.
How do I do this?
It's a little difficult to understand everything going on here, but I get the sense that your main goal is to pass two args to this.handleSubmit. You may instead consider just passing poll.title and grabbing the selected option from state. Try something like this:
this.handleSubmit(title) {
// this.state.value should already have the selected option!
let obj = {
title,
option: this.state.value
};
// dispatch the object to redux, update your reducer, etc.
}
And in your render, be sure to bind poll.title as the argument:
render() {
...
<form onSubmit={this.handleSubmit.bind(this, poll.title)}>
}
Does that help at all? Let me know if I'm totally missing the mark on what you intend. With .bind() you pass the this context to use followed by a list of common separated args, so you could pass multiple args, but it's much easier to just grab option from state in this case.
Edit
If you want to access the SyntheticEvent that gets fired on submit, you simple specify it as the second argument to this.handleSubmit like so:
this.handleSubmit(title, event) {
// prevent form submit
event.preventDefault();
}
// this is the exact same as above, no need to pass event
render() {
...
<form onSubmit={this.handleSubmit.bind(this, poll.title)}>
}
In React, synthetic events are always passed as the last argument to a bound function and simply need to be specified to be in the method definition (no need to specify in render). This is Function.prototype.bind way of working with functions and events in React. Here are the supporting docs: https://reactjs.org/docs/handling-events.html#passing-arguments-to-event-handlers
I have a child component which deals with the array of input controls. I want to have a formcontrol over the child component.
I am passing the array of json object, what would be the correct way to bind parent form to the child component's FormArray having 2 form control with Validator required on first.
This is the initial code
<h1>Child</h1>
<div formArrayName="names">
<div *ngFor="let c of names.control">
<input formControlName="firstName">
<input formControlName="lastName">
</div>
</div>
Intention is to bind parent form with the array of input control in the child component. Also form will become invalid if one of the input control in child component doesn't have required field.
http://plnkr.co/edit/HznCJfSEiSV28ERqNiWr?p=preview
I love solve old post :)
The key is that your custom Form Component has inside a FormArray, then use "writeValue" to create the formArray, see stackblitz
#Component({
selector: "my-child",
template: `
<h1>Child</h1>
<div *ngFor="let group of formArray.controls" [formGroup]="group">
<input formControlName="firstName" (blur)="_onTouched()" />
<input formControlName="lastName" (blur)="_onTouched()"/>
</div>
`,
providers: [{
provide: NG_VALUE_ACCESSOR,
useExisting: Child,
multi: true
},
{
provide: NG_VALIDATORS,
useExisting: Child,
multi: true
}
]
})
export class Child implements ControlValueAccessor {
formArray: FormArray;
_onChange;
_onTouched;
writeValue(value: any) {
this.formArray = new FormArray(
value.map(x => {
return new FormGroup({
firstName: new FormControl(x.firstName, Validators.required),
lastName: new FormControl(x.firstName, Validators.required)
});
})
);
this.formArray.valueChanges.subscribe(res => {
this._onChange(res);
});
}
registerOnChange(fn: (value: any) => void) {
this._onChange = fn;
}
registerOnTouched(fn: (value: any) => void) {
this._onTouched = fn;
}
validate({ value }: FormControl) {
return !this.formArray || this.formArray.valid ?
null : { error: "Some fields are not fullfilled" };
}
}
You have to use formArrayName directive and *ngFor like this:
<form [formGroup]="form" (ngSubmit)="sayHello()">
<input formControlName="name"><br>
<input formControlName="email"><br>
<div formArrayName="username">
<div *ngFor="let user of username.controls; let i=index">
<my-child formControlName="i"></my-child>
</div>
</div>
<button type="submit">Register</button>
</form>
And with FormBuilder you have to use FormArray as well.
form = new FormGroup({
name: new FormControl('My Name'),
username: new FormArray([
new FormControl("value"),// ControlValueAccesor is applied only to one control, not two. So you cannot use javascript object like you are using below this line.
{firstName:"Anna", lastName:"Smith"},
{firstName:"Peter", lastName:"Jones"}
])
});
For more details, see this doc.
Case 2: passing FormGroup:
form = new FormGroup({
name: new FormControl('My Name'),
username: new FormArray([
new FormGroup({
firstName: new FormControl('Anna'),
lastName: new FormControl('Smith')
}),
new FormGroup({
firstName: new FormControl('Peper'),
lastName: new FormControl('Jones')
}),
])
})
If you are tring to pass the FormGroup as a ngModel parameters, you can't!
I have a dataview that is getting its data from the bind
xtype:'dataview',
width:'100%',
loadMask: true,
bind:
{
data:'{items}' <--- this is a problem
},
tpl:Ext.create('Ext.XTemplate',
'<tpl for=".">',
' <div class="icon-square">',
' <img src="../images/{type}.png" />',
' <div class = "count-style">{count}</div>',
' </div>',
'</tpl>'
),
itemSelector: 'img',
// itemSelector: 'div.icon-square', <-- this also does not work
listeners:
{
'itemclick':'onItemsSelect',
}
}
The dataview works as expected and displays the data, but the itemselector is not triggering the itemclick event listener.
However if I replace the bind with an actual store, everything works as expected.
Does anybody have any idea of why it would not work only when I use the bind?
For someone looking for solution, the below code change worked for me.
I created a view model to bind the data, instead of directly binding it.
viewModel:
{
stores:
{
itemStore:
{
model:'RA.model.Item',
data:'{items}'
}
}
},
...
...
{
xtype:'dataview',
width:'100%',
loadMask: true,
bind:
{
store:'{itemStore}'
},
tpl:Ext.create('Ext.XTemplate',
'<tpl for=".">',
' <div class="icon-square">',
' <img src="../images/{type}.png" />',
' <div class = "count-style">{count}</div>',
' </div>',
'</tpl>'
),
itemSelector: 'img',
listeners:
{
'itemclick':'onItemsSelect',
}
}