nestjs-dgraph

Description

Nestjs Plugin for [Dgraph community > 20.0], Support HttpClient, Grpc

Installation

``bash
npm i --save nestjs-dgraph @grpc/grpc-js
`

Quick Start

Import DgraphModule to your ApplicationModule

`typescript

import { Module } from '@nestjs/common';
import { DgraphModule } from 'nestjs-dgraph';
import * as grpc from '@grpc/grpc-js';

@Module({
imports: [
DgraphModule.forRoot({
stubs: [
{
// HTTP Client Configuration
address: 'http://localhost:8080'
},
{
// GRPC Client Configuration
address: 'localhost:9080',
credentials: grpc.credentials.createInsecure(),
}
],
auth_token: 'a94a8fe5ccb19ba61c4c0873d391e987982fbbd3',
debug: true,
initScript: async (client) => {
client.newTxn().setSchema('external_id: string @index(exact) .');
},
})
],
})
export class ApplicationModule {}

`

Inject DgraphService to your services and access the DgraphClient

`typescript

@Injectable()
export class SomeService {
constructor(dgraph: DgraphService) {}

findAll() {
const query = {
people(func: has(name)) {
name
type
}
};

const req = await this.dgraph.call().newTxn().query(query);
return req;
}

createMutation() {
await this.dgraph
.call()
.newTxn()
.mutate({
set: [
{
name: 'Landlord',
type: 'building',
},
],
});
}

updateMutation() {
await this.dgraph
.call()
.newTxn()
.mutate({
set: [
{
uid: '0x2734',
name: 'Landlord blue',
type: 'building',
},
],
});
}

runMutationDelete() {
await this.dgraph
.call()
.newTxn()
.mutateDelete({
uid: '0x2734',
name: null,
type: null,
});
}

}

``