In this example, we populate the Typeahead component with JSON data that's dynamically fetched from an external source via the getSuggestions
hook.
Also, this demo caps the max # of search results to display at 5.
{% include "@bolt-components-form/form.twig" with {
children: include("@bolt-components-typeahead/typeahead.twig", {
attributes: {
class: [
"js-typeahead-hook--dynamically-fetch-data"
]
},
max_results: 5,
input_name: "q"
}),
attributes: {
action: "https://www.pega.com/search",
target: "_blank",
method: "GET"
}
} %}
// NOTE: make sure you're running this code through a tool like Babel before shipping for cross browser compatibility!
const dynamicTypeaheadDemo = document.querySelector(
'.js-typeahead-hook--dynamically-fetch-data',
);
const setupEventHandlers = () => {
// note: make sure to let Typeahead know when the data fetched is ready
dynamicTypeaheadDemo.on('getSuggestions', async value => {
return await new Promise(async resolve => {
await fetch('/build/data/typeahead.data.json')
.then(function(response) {
return response.json();
})
.then(function(data) {
return resolve(data);
});
});
});
dynamicTypeaheadDemo.on('onSelected', (element, event, suggestion) => {
const exactMatch = element.items.filter(
item => item.label === suggestion.suggestionValue,
)[0];
function navigateTo(url) {
if (window.location !== window.parent.location) {
const win = window.open(url, '_blank');
win.focus();
} else {
window.location = url;
}
}
if (exactMatch && exactMatch.url) {
if (exactMatch.url) {
navigateTo(exactMatch.url);
} else {
navigateTo(`https://www.pega.com/search?q=${itemSelected.label}`);
}
} else if (suggestion.suggestionValue !== '') {
navigateTo(`https://www.pega.com/search?q=${suggestion.suggestionValue}`);
}
});
};
if (dynamicTypeaheadDemo) {
if (dynamicTypeaheadDemo._wasInitiallyRendered) {
setupEventHandlers();
}
dynamicTypeaheadDemo.addEventListener('ready', e => {
if (e.detail.name === 'bolt-typeahead') {
setupEventHandlers();
}
});
}