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ExploreContainer.tsx
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ExploreContainer.tsx
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import React, { useEffect, useState } from 'react';
import { DataStore, Predicates } from '@aws-amplify/datastore';
import { Post, PostStatus } from '../models';
import './ExploreContainer.css';
function onCreate() {
DataStore.save(
new Post({
title: `New title ${Date.now()}`,
rating: (function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min)) + min;
})(1, 7),
status: PostStatus.ACTIVE
})
);
}
function onDeleteAll() {
DataStore.delete(Post, Predicates.ALL);
}
async function onQuery() {
const posts = await DataStore.query(Post, c => c.rating('gt', 4));
console.log(posts);
}
interface ContainerProps { }
const ExploreContainer: React.FC<ContainerProps> = () => {
const [form, updateForm] = useState({ title: '', rating: 0 });
async function create() {
const postData = {...form, status: PostStatus.INACTIVE};
await DataStore.save(
new Post(postData)
);
console.log('successfully created new post');
updateForm({ title: '', rating: 0 });
}
useEffect(() => {
const subscription = DataStore.observe(Post).subscribe(msg => {
console.log(msg.model, msg.opType, msg.element);
});
return () => subscription.unsubscribe();
}, []);
return (
<div className="container">
<strong>Power Of Amplify DataStore</strong>
<p>Start with Ionic</p>
<input type="button" value="NEW" onClick={onCreate} />
<input type="button" value="DELETE ALL" onClick={onDeleteAll} />
<input type="button" value="QUERY rating > 4" onClick={onQuery} />
<input
value={form.title}
placeholder="title"
onChange={e => updateForm({ ...form, 'title': e.target.value })}
/>
<input
value={form.rating}
placeholder="rating"
onChange={e => updateForm({ ...form, 'rating': parseInt(e.target.value) })}
/>
<button onClick={create}>Create Post</button>
</div>
);
};
export default ExploreContainer;