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App.tsx
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132 lines (110 loc) · 2.93 KB
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/**
* Sample React Native App
* https://github.com/facebook/react-native
* @flow
*/
import React from 'react';
import { Component } from 'react';
import {
Platform,
StyleSheet,
Text,
View
} from 'react-native';
import { createConnection, getRepository } from 'typeorm/browser';
import { Author } from './entities/author';
import { Category } from './entities/category';
import { Post } from './entities/post';
interface AppProps {
}
interface AppState {
progress: string;
loadedPost: Post| null;
savedPost: boolean
}
export default class App extends Component<AppProps, AppState> {
constructor(props: AppProps) {
super(props);
this.state = {savedPost: false, progress: 'Post is being saved', loadedPost: null};
this.runDemo();
}
connect() {
return createConnection({
type: 'react-native',
database: 'test',
location: 'default',
logging: ['error', 'query', 'schema'],
synchronize: true,
entities: [
Author,
Category,
Post
]
});
}
async runDemo() {
await this.connect();
const category1 = new Category();
category1.name = "TypeScript";
const category2 = new Category();
category2.name = "Programming";
const author = new Author();
author.name = "Person";
const post = new Post();
post.title = "Control flow based type analysis";
post.text = "TypeScript 2.0 implements a control flow-based type analysis for local variables and parameters.";
post.categories = [category1, category2];
post.author = author;
const postRepository = getRepository(Post);
await postRepository.save(post);
console.log("Post has been saved");
this.setState({
progress: "Post has been saved"
});
const loadedPost = await postRepository.findOne({where: {id: post.id}, relations: ["author", "categories"]});
// createQueryBuilder('post')
// .innerJoinAndSelect("post.author", "author")
// .innerJoinAndSelect('post.categories', 'categories')
// .where('post.id = :id', { id: post.id })
// .getOne();
if (loadedPost) {
console.log("Post has been loaded: ", loadedPost);
this.setState({
loadedPost: loadedPost
});
}
}
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to the React Native Example for TypeORM!
</Text>
<Text style={styles.small}>
{this.state.progress}
</Text>
<Text style={styles.small}>
{JSON.stringify(this.state.loadedPost)}
</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
small: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});