Problem with storage ionic and angular, return undefined data used service

Question

Use this service but return undefined data.

  // Function for get a element to the store
  public async get(name: string): Promise<any> {
    await this._storage?.get(name);
  }

Talon · Accepted Answer · 2022-05-31 16:02:17Z

5

Have you created the _storage var with storage.create(), where storage:Storage?

storage.create() return a Promise, so before call get or set you have to wait that your storage is created/loaded.

import { Storage } from '@ionic/storage-angular';

export class DBService {
    private _storage: Storage = null;
    constructor(private storage: Storage) {}
    
    async init() {
        this._storage = await this.storage.create();
    }

    async get(key: string) {
        if(!this._storage)
            await this.init() ;
        return await this._storage?.get(key) ;
    }
    async set(key: string, data: any) {
        if(!this._storage)
            await this.init() ;
        return await this._storage?.set(key, data) ;
    }
}

answered May 31, 2022 at 16:02

Talon

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