React Native DB Models

This wrapper is built on top of React Native Store and provides a better and improved Database layer for asynchronous DB transactions.

React Native DB Models fixes a lot of problems in react native store and also the DB class on top helps to provide more functionality and easy developing options.

New Feature added DB Emitter added on all write operations to the models. Which helps you maintain a global storage and re-rendering capabilities for your app.

Check the new documentation

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Usage

The ideal way to use this library is to have a db.js in your applications somewhere. Which will be required.

DB.js

var RNDBModel = require('react-native-db-models')

var DB = {
    "app": new RNDBModel.create_db('app'),
    "users": new RNDBModel.create_db('users'),
}

module.exports = DB

and require it in your code -

var React = require('react-native');
var DB = require('./db.js');
// DB Emitter Initialized

var DBEvents = require('react-native-db-models').DBEvents
var {
    AppRegistry,
    StyleSheet,
    Text,
    View,
    Image
    } = React;
    
// Only "all" event emitter is available

DBEvents.on("all", function(){
	console.log("Database changed");
})

var App = React.createClass({
	get_users: function(){
		DB.users.get_all(function(result){
			console.log(result);
		})
	},
	render: function(){
		return (
		<View>
			<Text onPress={this.get_users}> Hello </Text>
		</View>
		);
	}
});

All methods are async and therefore require a callback method.

You can check all the returned data from the callback. The returned data is more than expected so modify it as per your needs.

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get

get(query_data, callback) query_data: The data to be matched. (eg. {name: "John Doe"})

Example

DB.users.get({first_name: "Rishabh"}, function(results){
	console.log(results);
})

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get_id

get_id(id, callback) id: ID of the object to be fetched.

Example

DB.users.get_id(10, function(results){
	console.log(results);
})

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get_all

get_all(callback) Gets the complete table for you.

Example

DB.users.get_all(function(result){
			console.log(result);
		})

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remove

remove(query_data, callback) query_data: The data to be matched. (eg. {name: "John Doe"})

Example

DB.users.remove({first_name: "Rishabh"}, function(removed_data){
	console.log(removed_data);
})

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remove_id

remove_id(id, callback) id: ID of the object to be deleted.

Example

DB.users.remove({first_name: "Rishabh"}, function(removed_data){
	console.log(removed_data);
})

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add

add(data, callback) data: The data to be added. (eg. {name: "John Doe", age: 56})

Example

DB.users.add({first_name: "Rishabh", age: 25}, function(added_data){
	console.log(added_data); 
})

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update

update(query_data, new_data, callback) query_data: The data to be matched. (eg. {name: "John Doe"}) new_data: The data to be updated. (eg. {age: 12})

Example

DB.users.update({first_name: "Rishabh"}, {age: 25}, function(updated_table){
	console.log(updated_table);
})

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update_id

update_id(id, new_data, callback) id: The id of the data to be matched. new_data: The data to be updated. (eg. {name: "Ken"})

Example

DB.users.update_id(3, {name: "Ken", age: 12}, function(updated_table){
	console.log(updated_table);
})

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erase_db

erase_db(callback) Erases the complete table.

Example

DB.users.erase_db(function(removed_data){
	console.log(removed_data);
})

More methods and features are gonna be added soon. Such as update, replace, constraints

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