wejsv2old-plugin-rating/server/controllers/RatingManagerController.js

We.js v2 Old - Rating Plugin

/**
 * RatingManagerController
 *
 * @module    :: Controller
 * @description :: Contains logic for handling requests.
 */

module.exports = {
  computeRating: function (req, res) {
    // body...
    var sqlModel = sails.models.ratingmanager;

    var sql = 'SELECT DISTINCT id';
    sql += ' FROM ratingvote';
    sql += ' WHERE manager = ' + req.param('manager');
    sql += ' AND modelId = ' + req.param('modelId');

    sqlModel
      .query(sql, function (err, ids) {
        if (err) {
          return res.negotiate(err);
        }
        var inRating = ids.map(function (i){ return i.id; }).join(',');

        if (!inRating.length) {
          return res.json({});
        }

        sqlComputeRating(inRating, req, function (err, result){
          if (err) {
            return res.negotiate(err);
          }

          result.rating = result.rating[0];
          result.terms = result.terms.map(function (r){
            r.id = r.term;
            delete r.term;
            return r;
          });
          
          var totalGeral = 0;

          for (var i = 0; i < result.terms.length; i++) {
            totalGeral += result.terms[i].total;
          };
          
          result.totalGeral = totalGeral;
          res.json(result);
        });
      });
  }
};


function sqlComputeRating(ratings, req, cb) {
  var sqlModel = sails.models.ratingmanager,
  modelId = req.param('modelId'),
  manager = req.param('manager');

  async
  .parallel({
    /*
     *  SELECT AVG(rate) AS rate
     *   FROM ratingvote
     *   WHERE modelId = 1312 AND
     *   manager = 3
     */
    rating: function (callback) {
      var sqlQuery = 'SELECT AVG(rate) AS rate, COUNT(*) as total';
      sqlQuery += ' FROM ratingvote';
      sqlQuery += ' WHERE modelId = ' + modelId;
      sqlQuery += ' AND manager = ' + manager;

      sqlModel
        .query(sqlQuery, callback);
    },
    /*
     *  SELECT term_termsRated AS terms, (count(*) / (select count(*) from bd_wejs.ratingvote_terms__term_termsrated 
     *   WHERE ratingvote_terms IN (3, 4))) * 100 as percentage
     *   FROM bd_wejs.ratingvote_terms__term_termsrated
     *   WHERE ratingvote_terms IN (3, 4)
     *   group by terms
     */
    terms: function (callback) {
      // var sqlQuery = 'SELECT term_termsRated AS term, (COUNT(*) / (SELECT COUNT(*) FROM ratingvote_terms__term_termsrated';
      // sqlQuery += ' WHERE ratingvote_terms IN (' + ratings +'))) * 100 as percentage';
      // sqlQuery += ' FROM ratingvote_terms__term_termsrated';
      // sqlQuery += ' WHERE ratingvote_terms IN (' + ratings + ')';
      // sqlQuery += ' GROUP BY term';

      var sqlQuery = 'SELECT term_termsRated AS term, COUNT(*) as total FROM ratingvote_terms__term_termsrated';
      sqlQuery += ' WHERE ratingvote_terms IN (' + ratings + ')';
      sqlQuery += ' GROUP BY term';

      sqlModel
        .query(sqlQuery, callback);
    }
  }, cb);
}