node-rigorous/lib/models/ObjectCrud/mongoose/pagination.js

Rigorous Framework

"use strict";

module.exports = function createPaginationMethod() {
  return function () {
    var query = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    var offsetParam = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
    var limitParam = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 500;
    var options = arguments.length > 3 ? arguments[3] : undefined;
    var offset;
    var limit;

    try {
      offset = parseInt(offsetParam, 10);
    } catch (err) {
      offset = 0;
    }

    try {
      limit = parseInt(limitParam, 10);
    } catch (err) {
      limit = 500;
    }

    var Model = this;
    return new Promise(function (resolve, reject) {
      Model.paginate(query, Object.assign({
        offset: offset,
        limit: limit
      }, options), function (err, result) {
        // result.docs
        // result.total
        // result.limit - 10
        // result.offset - 20
        if (err) {
          return reject(err);
        }

        return resolve(result);
      });
    });
  };
};