deno.land / x / dormlite@0.0.2 / mod.ts

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import { DB } from "https://deno.land/x/sqlite@v3.7.0/mod.ts";
export class Database { static db: DB;
// deno-lint-ignore no-explicit-any static async init(filename: string, models: any[]) { const databaseExists = await Deno.stat(`${filename}.db`).catch(() => false);
this.db = new DB(`${filename}.db`);
if (!databaseExists) { await models.forEach(async (model) => { await model.init(model); }); } }}
export class Model { static autoincrement = 0; static tableName = "models";
id: number; created_at: string; updated_at: string;
constructor() { this.id = getAutoincrement(this); this.created_at = new Date().toISOString(); this.updated_at = new Date().toISOString(); }
static async init<T extends Model>(model: new () => T) { const temp: any = new model();
const columns = Object.keys(temp).map((column) => { if (column === "id") { return `${column} SERIAL PRIMARY KEY`; } else if (column === "tableName") { return false; }
const type = typeof temp[column]; let sqlType = "";
switch (type) { case "string": sqlType = "TEXT"; break; case "number": sqlType = "INT"; break; case "boolean": sqlType = "BOOLEAN"; break; default: sqlType = "TEXT"; }
return `${column} ${sqlType}`; }).filter(Boolean);
await Database.db.query( ` CREATE TABLE IF NOT EXISTS ${this.tableName} ( ${columns.join(", ")} ) `, ); }
static async all(): Promise<Model[]> { const results = await Database.db.query( `SELECT * FROM ${this.tableName}`, );
return results as unknown[] as Model[]; }
static async find(id: number): Promise<Model> { const results = await Database.db.query( `SELECT * FROM ${this.tableName} WHERE id = $1`, [id], );
return results[0] as unknown as Model; }
static async where( column: string, value: string | number, ): Promise<Model[]> { const results = await Database.db.query( `SELECT * FROM ${this.tableName} WHERE ${column} = $1`, [value], );
return results as unknown[] as Model[]; }
static async create( model: Model, ): Promise<Model> { const columns = Object.keys(model); const values = Object.values(model);
const indexOfTableName = columns.indexOf("tableName"); if (indexOfTableName! > -1) { columns.splice(indexOfTableName, 1); values.splice(indexOfTableName, 1); }
const result = await Database.db.query( `INSERT INTO ${this.tableName} (${columns.join(", ")}) VALUES (${ values.map((_, i) => `$${i + 1}`).join(", ") }) RETURNING *`, values, );
return result[0] as unknown as Model; }
static async clear(): Promise<void> { await Database.db.query( `DELETE FROM ${this.tableName}`, ); }}
// Source: https://stackoverflow.com/questions/33387318/access-to-static-properties-via-this-constructor-in-typescriptfunction getAutoincrement<T>(target: T) { type Type = { constructor: Type; autoincrement: any; } & T;
return (target as Type).constructor.autoincrement++;}
dormlite
An sqlite orm for Deno
DocumentationDocumentation
GitHub RepositoryTortitasT/dormlite
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Tagged at
2 months ago