I'm trying to implement this with elasticsearch and it is working But how i can force this show results which can be different from the searched terms? For example i search ardino, The elasticsearch give me the word arduino but then react-select does not show that result because ardino does not contain arduino. I know the idea of this library is exactly that and it is working ok, but i have most of the things already implemented and it is only missing that part.
The handle is giving the right behavior and it is populating the options correctly.
Thank you
<Select
name= {this.state.selectedOption}
value={this.state.selectedOption}
isSearchable={true}
onChange = {(val) => {
this._handleSearch(val.value)
}}
onInputChange = {(val) => {
this._handleSearch(val)
}}
options={this.state.options}
/>
I would recommend using the Async component which can simplify your code. You will not need the onChange handler anymore.
isSearcheable is true by default, no need to specify.
In answer to your question: Make sure you are passing in label and value keys with each result option. If you want to customize any of the results, for example adding the search term in the results, you can manually manipulate the options array.
import React, {Component} from 'react';
import AsyncSelect from 'react-select/lib/Async';
class Search extends Component {
state = {inputValue: ""}
onInputChange = (inputValue) => {
this.setState({ inputValue });
};
getSearchResults = async (inputValue) => {
// elastic search results
let options = await fetch(`searchElastic/${inputValue}`);
// input value of drop-down
const inputValue = this.state.inputValue;
// manually add input field as an option in drop-down
if (inputValue.length > 0)
options.unshift({label: inputValue, value: inputValue})
// async handling of new props
return options.map(opt => {
return {label: opt.name, value: opt.value}
})
}
render() {
return <AsyncSelect
onInputChange={this.onInputChange}
loadOptions={this.getSearchResults}
/>
}
}
export default Search;
Related
I want to use the same logic when I press the APPLY button but with the ENTER key.
How do I do that?
filterParams: {
closeOnApply:true,
buttons: ['reset', 'apply'],
values: parentCampaignAndNodes.PaymentGroups
},
As you might have found out by now, you can remove the Apply button (by setting filterParams: { buttons: [] } in your column definitions) and then values are submitted onchange.
The solution you ask for is indeed still not available through the AgGrid API. I do have a workaround, but beware it uses direct DOM bindings which is not recommended when working with React.
const applyFilterOnEnter: AgGridReactProps['onFilterOpened'] = ev => {
const inputElem = ev.eGui.querySelector('.ag-filter-body .ag-input-field');
const applyButtonElem = ev.eGui.querySelector('.ag-filter-apply-panel button[ref=applyFilterButton]');
if (inputElem && applyButtonElem) {
inputElem.addEventListener('keydown', keyEv => {
if ((keyEv as KeyboardEvent).key === 'Enter') {
(applyButtonElem as HTMLButtonElement).click();
}
});
}
};
return <AgGridReact
onFilterOpened={applyFilterOnEnter}
/>
Question regarding react-navigation v5.
In previous versions, we were able to specify custom transition for specific routes, not screens, by doing the following inside a StackNavigator:
transitionConfig: () => ({
screenInterpolator: sceneProps => {
const {scenes, scene} = sceneProps;
const prevRoute = scenes[0].route.routeName === 'Route A';
// If prev route is A, and then current route is B, then we do a specific transition
if (prevRoute && scene.route.routeName === 'Route B') {
return StackViewStyleInterpolator.forVertical(sceneProps);
}
// Otherwise default to normal transition
return StackViewStyleInterpolator.forHorizontal(sceneProps);
},
}),
Now, I'm trying to achieve the same for react-navigation v5. I know I'm able to specify a custom animation per screen by doing something like:
<Stack.Screen name="Route B" component={RouteB} options={{ cardStyleInterpolator: CardStyleInterpolators.forVerticalIOS }} />
The problem is that I don't want this transition applied every time it is navigated to RouteB, ONLY when the previous route is RouteA, I want this transition applied, just like the previous code block above.
Couldn't find any example in the docs so would appreciate some help in migrating the code over to v5.
Something like this should work:
options={({ navigation, route }) => {
const state = navigation.dangerouslyGetState();
const index = state.routes.indexOf(route);
const previousRoute = state.routes[index - 1];
if (previousRoute?.name === 'RouteA') {
return {
cardStyleInterpolator: CardStyleInterpolators.forVerticalIOS,
gestureDirection: 'vertical',
};
} else {
return {};
}
}}
I wanted to give some form visual validation cues, so I tried using class binding to do just that. If I use the ternary inline, it doesn't really meet my requirements of what should happen, but when I tried using computed prop, it made all the other components disappear.
If i tried doing it like this: v-bind:class="[(!validation.hasError('form.fullName'))?'has-success':'has-danger noValid']"
It just triggers the animation and the classes once and they stays there. I want to trigger the noValid animation everytime the user clicks my submit button if there's errors in validation.
I'm using simple-vue-validator btw.
Here's the godforsaken component, I use vue now-ui-kit template from Creative Tim as a base and customize my way from there. This is their Form Group Input component, docs here
<fg-input
class="input-lg"
:label="validation.firstError('form.fullName')"
placeholder="Full Name..."
v-model="form.fullName"
addon-left-icon="now-ui-icons users_circle-08"
v-bind:class="{ visualValidation }"
></fg-input>
Button Component: bootstrap-vue, cause their customized button doesn't really serve my purpose
<b-button type="submit" block pill variant="info" #click="submit">Submit Form</b-button>
My computation: noValid is the shaking animation class, has-success and has-danger just changes their appearances.
computed: {
visualValidation: function() {
const successClass = "has-success";
const errorBoi = "has-danger";
const shakeBoi = "noValid";
if (validation.firstError("form.fullName")) {
return errorBoi + " " + shakeBoi;
} else if (!validation.hasError("form.fullName")) {
return successClass;
}
}
}
I thought the variables that i returned would be binded as classes to the form.fullName Model but it's not doing anything, better yet, it made all my other components not rendering.
What should i do here? i'm just starting to learn Vue.js so i don't really understand what's going on here.
Edit from here:
I rewrote the logic to my class binding, and just use method to remove the class on click the components.
here is the updated component:
<fg-input
class="input-lg"
:label="validation.firstError('form.email')"
placeholder="Email Here..."
v-model="form.email"
addon-left-icon="now-ui-icons ui-1_email-85"
v-bind:class=" {'has-success' : isSuccEmail, 'has-danger' : isFailEmail, 'noValid': validNoEmail} "
#click="removeShake()"
></fg-input>
data:
isSuccEmail: false,
isFailEmail: false,
validNoEmail: false
method:
removeShake: function() {
let vm = this;
vm.validNoName = false;
vm.validNoEmail = false;
console.log(vm.validNoEmail);
console.log(vm.validNoName);
},
However, there's currently a bug, where the validator don't validate separately. It gave the class has-success to email even though it was full-name that was successful.
valEmail: function() {
let vm = this;
vm.$validate("form.email").then(function(success) {
if (success) {
vm.isFailEmail = false;
vm.isSuccEmail = true;
} else if (!success) {
vm.isSuccEmail = false;
vm.isFailEmail = true;
vm.validNoEmail = true;
} else {
alert("Fatal Error");
}
});
},
valName: function() {
let vm = this;
vm.$validate("form.fullName").then(function(success) {
if (success) {
vm.isFailName = false;
vm.isSuccName = true;
} else if (!success) {
vm.isSuccName = false;
vm.isFailName = true;
vm.validNoName = true;
console.log(vm);
} else {
alert("Fatal Error");
}
});
}
The $validate is a function of simple-vue-validator, the docs.
Submit function is just calling those two functions above.
I think this because of the promise call, is there a way to call the $validate() without promise?
There are a few problems here.
Firstly, while templates don't require you to use this. you still need to use it within your JS code. You should be seeing an error in the console, or maybe even at compile time depending on how you have linting configured.
if (validation.firstError("form.fullName")) {
What is validation? I assume that should be this.validation. Likewise a couple of lines further down.
Your next problem is here:
v-bind:class="{ visualValidation }"
The braces here are creating an object literal, so it's equivalent to this:
v-bind:class="{ visualValidation: visualValidation }"
This will be conditionally adding the string 'visualValidation' as a class , which isn't what you want. Get rid of the braces:
v-bind:class="visualValidation"
Let's say I have these components:
Translator
TranslationList
Translator determines translation context, has translate function.
TranslationList must show these "visual states": loading, result list, no results.
The Translator moves around the page (one instance): on focusing an input, it moves "below" it and gives a dropdown with suggestion.
So each time it moves, it has to:
Show that it's loading translations
Show translation list or no results message.
So my question is:
Which component should control the "loading" visual state?
If the Translator component controls it, it has to pass loading=true translations=[] as props to Translation list. Then later it has to rerender it again with new props loading=false translations=[...]. This seems a bit counter-intuitive, because loading feels like the state of the TranslationList component.
If we the TranslationList component has loading state, then it also has to have a way to translate things, meaning that I have to pass translate function as prop. I would then hold translations and loading as state. This all gets a bit messy, since it must now also receive string to translate, context.
I also don't want to have separate components for loading message, no results message. I'd rather keep these inside the TranslationList, because these 3 share that same wrapper <div class="list-group"></div>
Perhaps there should be one more Component in between these two components, responsible only for fetching translation data?
Translator component should control the loading state of a lower component list component. hold the loading and translating logic but with help by wrapping it in a high order component where you should put most of the logic. link for HOC https://www.youtube.com/watch?v=ymJOm5jY1tQ.
const translateSelected = wrappedComponent =>
//return Translator component
class extends React.Component {
state = {translatedText: [], loading:true}
componentDidMount(){
fetch("text to translate")
.then(transText => this.setState({translatedText: transText, loading: false}))
}
render() {
const {translatedText} = this.state
return <WrappedComponent {..this.props} {...translatedText}
}
}
const Translator_HOC = translateSelected(Translator);
You could introduce a Higher Order Component to control the switching of the loading state and the TranslationList. That way you separate the loading display away from your TranslationList as being it's concern. This also allows you to use the HOC in other areas.
The Translator can act as "container" component which does the data fetching/passing.
For example:
// The Loadable HOC
function Loadable(WrappedComponent) {
return function LoadableComponent({ loaded, ...otherProps }) {
return loaded
? <WrappedComponent {...otherProps} />
: <div>Loading...</div>
}
}
// Translation list doesn't need to know about "loaded" prop
function TranslationList({ translations }) {
return (
<ul>
{
translations.map((translation, index) =>
<li key={index}>{translation}</li>
)
}
</ul>
)
}
// We create our new composed component here.
const LoadableTranslationList = Loadable(TranslationList)
class Translator extends React.Component {
state = {
loaded: false,
translations: []
}
componentDidMount() {
// Let's simulate a data fetch, typically you are going to access
// a prop like this.props.textToTranslate and then pass that to
// an API or redux action to fetch the respective translations.
setTimeout(() => {
this.setState({
loaded: true,
translations: [ 'Bonjour', 'Goddag', 'Hola' ]
});
}, 2000);
}
render() {
const { loaded, translations } = this.state;
return (
<div>
<h3>Translations for "{this.props.textToTranslate}"</h3>
<LoadableTranslationList loaded={loaded} translations={translations} />
</div>
)
}
}
ReactDOM.render(<Translate textToTranslate="Hello" />)
Running example here: http://www.webpackbin.com/NyQnWe54W
Working on render performance on React, wonder what is the best way to tackle this performance issue. (The code is overly simplified for clarity)
var TodoList = React.createClass({
getInitialState: function () {
return { todos: Immutable.List(['Buy milk', 'Buy eggs']) };
},
onTodoChange: function (index, newValue) {
this.setState({
todos: this.state.todos.set(index, newValue)
});
},
render: function () {
return (
this.state.todos.map((todo, index) =>
<TodoItem
value={todo}
onChange={this.onTodoChange.bind(null, index)} />
)
);
}
});
Assume only one single todo item has been changed. First, TodoList.render() will be called and start re-render the list again. Since TodoItem.onChange is binding to a event handler thru bind, thus, TodoItem.onChange will have a new value every time TodoList.render() is called. That means, even though we applied React.addons.PureRenderMixin to TodoItem.mixins, not one but all TodoItem will be re-rendered even when their value has not been changed.
I believe there are multiple ways to solve this, I am looking for an elegant way to solve the issue.
When looping through UI components in React, you need to use the key property. This allows for like-for-like comparisons. You will probably have seen the following warning in the console.
Warning: Each child in an array or iterator should have a unique "key" prop.
It's tempting to use the index property as the key, and if the list is static this may be a good choice (if only to get rid of the warning). However if the list is dynamic, you need a better key. In this case, I'd opt for the value of the todo item itself.
render: function () {
return (
this.state.todos.map((todo, index) => (
<TodoItem
key={todo}
value={todo}
onChange={this.onTodoChange.bind(null, index)}
/>
))
);
}
Finally, I think your conjecture about the nature of the onChange property is off the mark. Yes it will be a different property each time it is rendered. But the property itself has no rendering effect, so it doesn't come into play in the virtual DOM comparison.
UPDATE
(This answer has been updated based on the conversation below.)
Whilst it's true that a change to a non-render based prop like onChange won't trigger a re-render, it will trigger a virtual DOM comparison. Depending on the size of your app, this may be expensive or it may be trivial.
Should it be necessary to avoid this comparison, you'll need to implement the component's shouldComponentUpdate method to ignore any changes to non-render based props. e.g.
shouldComponentUpdate(nextProps) {
const ignoreProps = [ 'onChange' ];
const keys = Object.keys(this.props)
.filter((k) => ignoreProps.indexOf(k) === -1);
const keysNext = Object.keys(nextProps)
.filter((k) => ignoreProps.indexOf(k) === -1);
return keysNext.length !== keys.length ||
keysNext.some((k) => nextProps[k] !== this.props[k]);
}
If using state, you'll also need to compare nextState to this.state.