No metadata for “TasksRepository” was found in NestJS typeORM postgres

No metadata for “TasksRepository” was found in NestJS typeORM postgres

When working with NestJS and TypeORM in a PostgreSQL database, you may encounter the error message “No metadata for ‘TasksRepository’ was found”. This error typically occurs when the entity metadata for the repository is not properly defined or imported. In this blog post, we will explore two possible solutions to resolve this issue.

Solution 1: Check Entity Metadata

The first solution is to ensure that the entity metadata for the repository is correctly defined. This includes verifying that the entity class is decorated with the @Entity() decorator and that the necessary columns and relations are specified using decorators such as @Column() and @Relation(). Additionally, make sure that the entity class is imported and registered in the appropriate module.

Here’s an example of how the entity metadata for a “Task” entity might look like:

import { Entity, Column, PrimaryGeneratedColumn } from 'typeorm';

@Entity()
export class Task {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  title: string;

  // Other columns and relations...
}
  

Make sure to double-check the entity metadata for any typos or missing decorators. Once the metadata is correctly defined, the “No metadata for ‘TasksRepository’ was found” error should be resolved.

Solution 2: Import Repository Correctly

Another possible solution is to ensure that the repository is imported correctly in the module where it is being used. The repository should be imported from the appropriate file and registered in the module’s providers array.

Here’s an example of how to import and register a repository in a module:

import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { TasksRepository } from './tasks.repository';
import { TasksService } from './tasks.service';

@Module({
  imports: [TypeOrmModule.forFeature([TasksRepository])],
  providers: [TasksService],
})
export class TasksModule {}
  

Make sure that the repository file is imported correctly and that the correct repository class is registered in the forFeature() method of the TypeOrmModule. Once the repository is imported and registered correctly, the “No metadata for ‘TasksRepository’ was found” error should be resolved.

These are the two possible solutions to resolve the “No metadata for ‘TasksRepository’ was found in NestJS typeORM postgres” error. By ensuring that the entity metadata is correctly defined and imported, and that the repository is imported and registered correctly, you should be able to overcome this issue and continue working with NestJS and TypeORM in your PostgreSQL database.