typeorm | Supports MySQL , PostgreSQL , MariaDB , SQLite , MS SQL Server | Object-Relational Mapping library

 by   typeorm TypeScript Version: 0.4.0-alpha.1 License: MIT

kandi X-RAY | typeorm Summary

kandi X-RAY | typeorm Summary

typeorm is a TypeScript library typically used in Utilities, Object-Relational Mapping applications. typeorm has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

TypeORM is an ORM that can run in NodeJS, Browser, Cordova, PhoneGap, Ionic, React Native, NativeScript, Expo, and Electron platforms and can be used with TypeScript and JavaScript (ES5, ES6, ES7, ES8). Its goal is to always support the latest JavaScript features and provide additional features that help you to develop any kind of application that uses databases - from small applications with a few tables to large scale enterprise applications with multiple databases. TypeORM supports both Active Record and Data Mapper patterns, unlike all other JavaScript ORMs currently in existence, which means you can write high quality, loosely coupled, scalable, maintainable applications the most productive way. TypeORM is highly influenced by other ORMs, such as Hibernate, Doctrine and Entity Framework.

            kandi-support Support

              typeorm has a medium active ecosystem.
              It has 31435 star(s) with 5820 fork(s). There are 354 watchers for this library.
              There were 9 major release(s) in the last 6 months.
              There are 1962 open issues and 5565 have been closed. On average issues are closed in 178 days. There are 36 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of typeorm is 0.4.0-alpha.1

            kandi-Quality Quality

              typeorm has 0 bugs and 0 code smells.

            kandi-Security Security

              typeorm has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              typeorm code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              typeorm is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              typeorm releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.
              It has 9 lines of code, 0 functions and 2703 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of typeorm
            Get all kandi verified functions for this library.

            typeorm Key Features

            No Key Features are available at this moment for typeorm.

            typeorm Examples and Code Snippets

            TypeScriptdot img1Lines of Code : 159dot img1no licencesLicense : No License
            copy iconCopy
            import 'reflect-metadata'
            import * as path from 'path'
            import dotenv from 'dotenv'
            import { ApolloServer } from 'apollo-server'
            import {
            } from 'typeorm'  
            TypeScriptdot img2Lines of Code : 124dot img2License : Permissive (MIT)
            copy iconCopy
            /** Declare the injection container */
            const container = await FactoryContainer.init({
              connection, // Your TypeORM database connection
              factories: [
                // An array of factory classes for bulk creating entities
            TypeORM Test Transactions,Getting Started
            TypeScriptdot img3Lines of Code : 97dot img3License : Permissive (MIT)
            copy iconCopy
            npm install --save typeorm-test-transactions
            # Not removing from the typeorm-transactional-cls-hooked
            # dependency separation. If you don't have the below
            # libraries then you'll need to install them as well
            # See https://github.com/odavid/typeorm-t  

            Community Discussions


            TypeORM insert row with foreign key
            Asked 2022-Mar-07 at 04:01

            I have a @OneToMany relation between
            Chatroom < 1 ---- M > Messages
            And the problem that I have is, whenever I try to insert a Message (or bulk of Messages), The foreign key for ChatRoom is null.
            In addition, I'm uploading my setup.



            Answered 2021-Sep-05 at 10:54

            I have faced a similar issue with TypeORM when working on a NestJS project.


            The issue is happening because you don't have any chatRoomId field defined in your Message Entity (class Message). So, when TypORM maps your message data with the Message entity, it doesn't set the chatRoomId.


            There are two solutions to fix this problem.

            1. You can add the chatRoomId field in your Message entity and now you will be able to send the field when saving the message data.


            Source https://stackoverflow.com/questions/69062374


            How to reference only one entity in a one-to-many relationship in TypeORM
            Asked 2022-Feb-21 at 11:46

            I'm wondering what's the best way to reference just one related entity instead of all of them in a one to many relationship.

            For example, let's say I have a user, and it can have multiple photos. I want each photo to be related to the user, but from the user perspective I only care about one specific photo (the last uploaded one for example).

            One approach is:



            Answered 2022-Feb-21 at 11:46

            I think that currentPhotoId should be oneToOne relationship to Photo and on an update of the photo, this id should be updated. Because this way business logic and database schema would be properly separated.

            Source https://stackoverflow.com/questions/71062479


            What is the question mark for next to TypeScript arg when its GraphQL arg indicates nullable true?
            Asked 2022-Feb-19 at 13:37
            // image.entity.ts
            import { Field, ObjectType } from '@nestjs/graphql';
            import {
            } from 'typeorm';
            export class ImageEntity {
              @Field(() => String)
              id: string; 
              @Column({ default: false })
              @Field(() => Boolean, { defaultValue: false }) 
              isThumbnail: boolean; 
            //isThumbnail?: boolean;  // it worked without question mark


            Answered 2022-Feb-19 at 13:37

            Yes, it means that it's optional, see https://www.geeksforgeeks.org/why-use-question-mark-in-typescript-variable/

            It is understandable that it seems to be superfluous, the reason for this is that on the one hand, GraphQL has to know that it's nullable and on the other, Typescript forces you to define your types strongly.

            GraphQL can be used by "normal" Javascript as well, which is very much loose-typed, in that use-case the only place where the optional nature of the item would be specified is the nullable attribute.

            Source https://stackoverflow.com/questions/71185269


            Validation Error: Using global entity manager instance methods for context specific actions is disallowed
            Asked 2022-Feb-15 at 13:12

            Using TypeORM and getting this error:



            Answered 2022-Feb-15 at 11:01

            I faced a similar issue today when I upgraded the mikrorm setup from v4 to v5. After doing some RnD, I found the following changes helped me solve the mentioned error.

            1. In the config object which is passed to the MikroORM.init call, pass the following property

            allowGlobalContext: true

            1. Don't directly use em to create database entry. Instead use the following code

            Source https://stackoverflow.com/questions/71117269


            TypeORM composite foreign key
            Asked 2022-Feb-14 at 20:14

            In a first class, the primary key is composite:



            Answered 2022-Feb-14 at 20:14

            That UPDATE might benefit from some of these indexes:

            Source https://stackoverflow.com/questions/70963321


            Can I abort DB operation / transaction in TypeORM using AbortSignal?
            Asked 2022-Jan-20 at 18:43

            Is there a built-in TypeORM feature for aborting DB operation using AbortSignal?



            Answered 2022-Jan-20 at 18:43

            It looks like there is no such feature, I opened an issue (TypeORM#8552) in GitHub requesting this feature.

            Source https://stackoverflow.com/questions/70789249


            TypeORM Inner Join Same Table
            Asked 2022-Jan-14 at 20:39

            I have a question I could not find an answer to online.

            I have a single table and I am looking to remove duplicate entries:

            My raw SQL query is:



            Answered 2022-Jan-14 at 20:39

            If you already have the raw SQL query right, you can just use that in code without the need of constructing it with QueryBuilder.

            Source https://stackoverflow.com/questions/70604422


            npm ERESOLVE unable to resolve dependency tree NestJs Passport
            Asked 2022-Jan-12 at 22:05

            I have following package.json



            Answered 2021-Dec-28 at 13:15

            To resolve this issue update the "passport" lib version in your package.json: from "passport": "^0.5.2", to "passport": "^0.4.0", so it's same as used in @nestjs/passport@8.0.1.

            Source https://stackoverflow.com/questions/70479557


            Docker NodeJS app cant connect to postgres database
            Asked 2022-Jan-11 at 12:40

            I am farely new to docker and docker-compose. I tried to spin up a few services using docker which contain of a nodejs (Nest.js) api, a postgres db and pgadmin. Without the API (nodejs) app beeing dockerized I could connect to the docker database containers, but now that I also have dockerized the node app, it is not connecting anymore and I am clueless why. Is there anything wrong with the way I have set it up?

            Here is my docker-compose file



            Answered 2022-Jan-11 at 12:40

            When using networks with docker-compose you should use the name of the service as you hostname.

            so in your case the hostname should be postgres and not localhost

            You can read more about at here: https://docs.docker.com/compose/networking/

            Source https://stackoverflow.com/questions/70665871


            Mock bcrypt module module in Nest.js
            Asked 2022-Jan-08 at 19:18

            I'm trying to mock bcrypt hash method implementation, but get following error:



            Answered 2022-Jan-08 at 19:18

            Okay, so there's a lot to say about your service code...

            The immediate issue you're having the problem is because you're mocking bcrypt's hash method to return a promise, but using the method as it returns a callback. IF you want to keep using the callback mixed with promises approach, you'd need to do something like

            Source https://stackoverflow.com/questions/70634909

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install typeorm

            Install the npm package:.
            Install the npm package: npm install typeorm --save
            You need to install reflect-metadata shim: npm install reflect-metadata --save and import it somewhere in the global place of your app (for example in app.ts): import "reflect-metadata";
            You may need to install node typings: npm install @types/node --save-dev
            Install a database driver: for MySQL or MariaDB npm install mysql --save (you can install mysql2 instead as well) for PostgreSQL or CockroachDB npm install pg --save for SQLite npm install sqlite3 --save for Microsoft SQL Server npm install mssql --save for sql.js npm install sql.js --save for Oracle npm install oracledb --save To make the Oracle driver work, you need to follow the installation instructions from their site. for SAP Hana npm i @sap/hana-client npm i hdb-pool SAP Hana support made possible by the sponsorship of Neptune Software. for MongoDB (experimental) npm install mongodb@^3.6.0 --save for NativeScript, react-native and Cordova Check documentation of supported platforms Install only one of them, depending on which database you use.
            The quickest way to get started with TypeORM is to use its CLI commands to generate a starter project. Quick start works only if you are using TypeORM in a NodeJS application. If you are using other platforms, proceed to the step-by-step guide.


            Learn about contribution here and how to setup your development environment here.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link

            Consider Popular Object-Relational Mapping Libraries

            Try Top Libraries by typeorm


            by typeormTypeScript


            by typeormTypeScript


            by typeormTypeScript


            by typeormTypeScript


            by typeormJavaScript