public bool registerGrades(ReviewsModel model)
        {
            model.totalGrade = fetchMerits(model.email) * (model.generalOpinion + model.communityContribution + model.articleStructure);
            SqlCommand cmd = conn.setSimpleReturnQuery("UPDATE Reviews " +
                                                       "SET    comments = @comments, " +
                                                       "       generalOpinion = @generalOpinion, " +
                                                       "       communityContribution = @communityContribution, " +
                                                       "       articleStructure = @articleStructure, " +
                                                       "       totalGrade = @totalGrade, " +
                                                       "       state = @state " +
                                                       "WHERE  articleId = @articleId " +
                                                       "AND    email = @email");

            cmd.Parameters.AddWithValue("@comments", model.comments);
            cmd.Parameters.AddWithValue("@generalOpinion", model.generalOpinion);
            cmd.Parameters.AddWithValue("@communityContribution", model.communityContribution);
            cmd.Parameters.AddWithValue("@articleStructure", model.articleStructure);
            cmd.Parameters.AddWithValue("@totalGrade", model.totalGrade);
            cmd.Parameters.AddWithValue("@state", "reviewed");
            cmd.Parameters.AddWithValue("@articleId", model.articleId);
            cmd.Parameters.AddWithValue("@email", model.email);

            conn.conn.Open();
            cmd.ExecuteNonQuery();
            conn.conn.Close();
            return(true);
        }
        // Se agrega un nuevo articulo
        public bool AddReview(ReviewsModel smodel)
        {
            connection();
            string AddNewArticle = "INSERT INTO REVIEWS " +
                                   "VALUES (@articleId, @email, @comments ,@generalOpinion ,@communityContribution,@articleStructure,@totalGrade,@state)";
            SqlCommand cmd = new SqlCommand(AddNewArticle, con); // Nombre procedimiento,

            cmd.Parameters.AddWithValue("@articleId", smodel.articleId);
            cmd.Parameters.AddWithValue("@email", smodel.email);
            cmd.Parameters.AddWithValue("@comments", smodel.comments);
            cmd.Parameters.AddWithValue("@generalOpinion", smodel.generalOpinion);
            cmd.Parameters.AddWithValue("@communityContribution", smodel.communityContribution);
            cmd.Parameters.AddWithValue("@articleStructure", smodel.communityContribution);
            cmd.Parameters.AddWithValue("@articleStructure", smodel.articleStructure);
            cmd.Parameters.AddWithValue("@totalGrade", smodel.totalGrade);
            cmd.Parameters.AddWithValue("@state", smodel.state);

            con.Open();
            int i = cmd.ExecuteNonQuery();

            con.Close();


            if (i >= 1)
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }