How to write and read a json file in ionic - html

Question

I'm using ionic to make an app and I need store some data and read, I don't know how to do, you can give me some directions? So... be more specific... In this app have an option to see the history of order(is a buy app), so everytime an user make an order I need save and when he wish he can see all order what he makes, to do this I need load all json from storage and show, and i dont know how to save of the right way to read dynamically after?

Answer 1

You can use $cordovaFile services :
const fileName = "orders.json"
var getUserOrders = function () {
var d = $q.defer(),
userOrders;
$cordovaFile.checkFile(cordova.file.dataDirectory, fileName).then(
function (success) {
$cordovaFile.readAsText(cordova.file.dataDirectory, fileName).then(
function (data) {
d.resolve(JSON.parse(data));
}, function (error) {
...
});
}, function (error) {
// No orders saved
d.resolve([]);
}
);
};
var saveAnOrder = function (order) {
var d = $q.defer(),
orderToSave = order;
getUserOrders().then(
function (data) {
var userOrders = data;
userOrders.push(orderToSave);
$cordovaFile.writeFile(cordova.file.dataDirectory, fileName, JSON.stringify(userOrders), true).then(
function (success) {
d.resolve(userOrders);
}, function (error) {
...
});
}, function (error) {
...
}
);
};