@brozeph/mongoose-middleware/dist/keyword.js

Middleware for mongoose that makes filtering, sorting, pagination and projection chainable and simple to apply

"use strict";

var _Object$defineProperty = require("@babel/runtime-corejs2/core-js/object/define-property");

_Object$defineProperty(exports, "__esModule", {
  value: true
});

exports["default"] = void 0;

var _default = function _default(mongoose) {
  var Query = mongoose.Query,
      Schema = mongoose.Schema;

  function getKeywordRegex(term) {
    var matches = [],
        pattern = ''; // this splits the string at each space except those within double quotes

    matches = term.match(/\w+|"[^"]+"/g); // fix for #33 - empty keywords cause exception

    if (matches) {
      matches.forEach(function (t) {
        // remove quotes
        t = t.replace(/\"/g, ''); // sanitize for regex (strips everything except letters, numbers, underscores, single quotes and whitespace)

        t = t.replace(/\W\s/ig, '\\$&'); // replace spaces with escapes

        t = t.replace(' ', '\\s');
        pattern += '(?=.*' + t + ')';
      });
    }

    return pattern;
  }

  Query.prototype.keyword = function (options) {
    // ensure keyword exists in query
    if (!options || !options.filters || !options.filters.keyword) {
      return this;
    }

    var fields = options.filters.keyword.fields || [],
        find = null,
        or = [],
        query = this,
        re = null,
        term = options.filters.keyword.term || '';

    if (!fields.length || term === '') {
      return query;
    }

    re = new RegExp(getKeywordRegex(term), 'i');
    fields.forEach(function (field) {
      // field is an Array; use $in to incorperate keyword for search
      if (query.model.schema.path(field) && query.model.schema.path(field) instanceof Schema.Types.Array) {
        find = {};
        find[field] = {};
        find[field].$in = [re];
        or.push(find);
      } else {
        find = {};
        find[field] = re;
        or.push(find);
      }
    });
    query.or(or);
    return query;
  };
};

exports["default"] = _default;
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