How to provide server-side pagination with NestJS?

问题

Given a MEVN stack using Nestjs, MongoDB(mongoose) I am working to setup server-side pagination. My approach is to use the mongoose-aggregate-paginate-v2, but I have not been able to distill what I need from my research¹ to make this work within the framework of Nestjs(typescript) and mongoose. Thanks for the assist..

Following documentation on Nestjs mongoose models, and mongoose-aggregate-paginate-v2 setup, I have the following:

contact.provider.ts

import mongoose, { Connection, AggregatePaginateResult, model } from "mongoose";
import { ContactSchema } from "./contact.schema";
import aggregatePaginate from "mongoose-aggregate-paginate-v2";
import { IContact } from "./interfaces/contact.interface";

// notice plugin setup:
ContactSchema.plugin(aggregatePaginate);

// is this correct ?
interface ContactModel<T extends Document> extends AggregatePaginateResult<T> {}

// how to create model for factory use ?
export const ContactModel: ContactModel<any> = model<IContact>('Contact', ContactSchema) as ContactModel<IContact>;

export const contactProvider = [
  {
    provide: 'CONTACT_MODEL',
    useFactory: (connection: Connection) => {
      // how to instantiate model ?
      let model = connection.model<ContactModel<any>>('Contact', ContactSchema);
      return model;
    },
    inject: ['DATABASE_CONNECTION'],
  },
];

I am between reading the Nestjs documentation, mongoose documentation, and typescript documentation. Somewhere along this path there is a way to provide the aggregatePaginate method on my Contact model, so that I can call like:

contact.service.ts

// Set up the aggregation
const myAggregate = this.contactModel.aggregate(aggregate_options);
const result = await this.contactModel.aggregatePaginate(myAggregate, options); // aggregatePaginate does not exist!

Review code in progress - available on this branch.

Research

Mongoose the Typescript way…?
Complete Guide for using Typescript in Mongoose with lean() function
Complete guide for Typescript with Mongoose for Node.js
MosesEsan/mesan-nodejs-crud-api-with-pagination-filtering-grouping-and-sorting-capabilities
Node.js API: Add CRUD Operations With Pagination, Filtering, Grouping, and Sorting Capabilities.
API Paging Built The Right Way
SO: Mongoose Plugins nestjs
SO: Pagination with mongoose and nestjs

回答1:

There is a conflict between NestJs and mongoose-aggregate-paginate-v2 and mongoose-paginate-v2 because those plugins are using @types/mongoose, so, NestJS has conflicts if you use @types/mongoose.

I tell you this because i was trying the same thing and figure it out that is not posible to implement mongoo-aggreate-paginate-v2/mongoose-paginate-v2 till Nestjs solve the issues with @types/mongoose.

I can recommend you make a custom function by your own to do that or use https://www.npmjs.com/package/mongoose-paginate because that plugin does not require @types/mongoose.

来源：https://stackoverflow.com/questions/65669164/how-to-provide-server-side-pagination-with-nestjs

标签

mongodb

typescript

mongoose

nestjs