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• typeorm-pagination-master
  • .github
    • workflows
      • node.js.yml
      • npm-publish.yml
  • src
    • index.ts
    • helpers
      • pagination.ts
  • LICENSE
  • test
    • pagination.js
  • README.md
  • package.json
  • tsconfig.json
  • .gitignore

import { NextFunction } from 'express';
import { Response } from 'express';
import { Request } from 'express';
import { PaginationAwareObject, paginate } from "./helpers/pagination";
import { SelectQueryBuilder } from 'typeorm';
declare module "typeorm" {
    export interface SelectQueryBuilder<Entity> {
        paginate(per_page?: number|null): Promise<PaginationAwareObject>;
    }
}

/**
 * Boot the package by patching the SelectQueryBuilder
 *  
 */
export function pagination(req: Request, res: Response, next: NextFunction):void {
    SelectQueryBuilder.prototype.paginate = async function(per_page?: number|null): Promise<PaginationAwareObject> {
        let current_page =  getPage(req);
        if (!per_page) per_page = getPerPage(req) // If not set, then get from request, default to 15
        else per_page = getPerPage(req, per_page);// If set, check if the request has per_page (which will override), or fallback to the set default
        return await paginate(this,current_page,per_page);
    }
    //console.log("pagination registered");
    next();
}
export function getPerPage(req: Request, defaultPerPage:number = 15) {
    return parseInt(req.query.per_page as string)|| defaultPerPage
}
export function getPage(req: Request, defaultPage:number=1) {
    return parseInt(req.query.page as string) || defaultPage
}