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@n1md7/indexeddb-promise
Advanced tools
Indexed DB with promises
Demo
Installation
npm install @n1md7/indexeddb-promise --save
Properties
- selectAll
- selectFrom
- selectWhere
- updateWhere
- deleteWhere
.selectAll()
Gets all the data from db and returns promise with response data
.selectFrom(pKey)
Has one parameter pkey as primaryKey and returns promise with data
.selectWhere({...})
Has one parameter props which can be
props = {
limit: 10,
where: (dataArray) => {return dataArray},
orderByDESC: true,
sortBy: 'comments'// ['comments', 'date']
}
@where property can filter out data
like where: data => data.filter(dt.username === 'admin')
.updateWhere(pKey, {...})
Has two parameters pkey and keyValue pair of updated data
.updateWhere(123, {username: 'admin'})
.deleteWhere(pKey)
Has one parameter pKey which record to delete based on primary key
note primary key is type sensitive. If it is saved as integer then should pass as integer and vice versa
Usage example
<html>
<head>
<title>IndexedDB app</title>
<script src="./dist/indexeddb-promise.min.js"></script>
</head>
<body>
<script>
// Your script here
</script>
</body>
</html>
Once you add indexeddb-promise.min.js in your document then you will be able to access
indexedDBModel variable globally which contains Model and ModelConfig.
They can be extracted as following
const {
ModelConfig,
Model
} = indexedDBModel;
// or
const ModelConfig = indexedDBModel.ModelConfig;
const Model = indexedDBModel.Model;
Create example config
class Rooms extends ModelConfig{
//@overrides default method
get config() {
return {
version: 1,
databaseName: 'myNewDatabase',
tableName: 'myNewTable',
primaryKey: {
name: 'id',
autoIncrement: false
},
initData: [],
structure: {
roomId: { unique: false, autoIncrement: true },
roomName: { unique: false, autoIncrement: false },
comments: { unique: false, autoIncrement: false }
}
};
}
}
Create connector
const db = new Model(new Rooms);
Full example
<html>
<head>
<title>IndexedDB app</title>
<script src="indexeddb-promise.min.js"></script>
</head>
<body>
<script>
const {
ModelConfig,
Model
} = indexedDBModel;
class Rooms extends ModelConfig{
//@overrides default method
get config() {
return {
version: 1,
databaseName: 'myNewDatabase',
tableName: 'myNewTable',
primaryKey: {
name: 'id',
autoIncrement: false
},
initData: [],
structure: {
roomId: { unique: false, autoIncrement: true },
roomName: { unique: false, autoIncrement: false },
comment: { unique: false, autoIncrement: false }
}
};
}
}
const db = new Model(new Rooms);
// add new record
db.insertData({
'id': Math.random() * 10,
'roomName': 'My room name',
'roomId': 1,
'comment': 'This room is awesome'
})
.then(function(){
//when done click update button
console.info('Yay, you have saved the data.');
}).catch(function(error){
console.error(error);
});
// Get all results from DB
db.selectAll()
.then(function(results){
console.log(...results);
});
</script>
</body>
</html>
FAQs
Indexed DB wrapper with promises
The npm package @n1md7/indexeddb-promise receives a total of 34 weekly downloads. As such, @n1md7/indexeddb-promise popularity was classified as not popular.
We found that @n1md7/indexeddb-promise demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Package last updated on 14 Dec 2019
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