Set different background color in specific rows in QTableview - background

Question

Hello, how i can change the background color in specific rows in QTableview?
I would like to know which method to use to make.
I have the method seleckRow but click another the color is not maintained in the selected row.
__author__ = 'jordiponsisala'
import sys
from PyQt5.QtWidgets import QDialog, QApplication
from PyQt5.QtSql import *
from PyQt5 import QtWidgets
from Llistats import modificarLineal
def crearConeccio():
db = QSqlDatabase.addDatabase("QMYSQL")
db.setHostName("localhost")
db.setDatabaseName("ProvaDB")
db.setUserName("root")
db.setPassword("password")
db.open()
print (db.lastError().text())
return True
class clasArticles(QDialog, modificarLineal.Ui_Dialog):
def __init__(self, parent=None):
super(clasArticles, self).__init__(parent)
self.setupUi(self)
self.setWindowTitle('Posu el nom que vulgui')
self.model= QSqlRelationalTableModel(self)
self.model.setTable('preu')
#self.model.setEditStrategy(QSqlRelationalTableModel.OnFieldChange)
self.model.setEditStrategy(QSqlTableModel.OnFieldChange)
self.model.setRelation(2,QSqlRelation("probeedors", "id", "nomProbeedor"))
self.model.select()
self.tableView.setModel(self.model)
self.tableView.setItemDelegate(QSqlRelationalDelegate(self.model))
self.tableView.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
self.tableView.selectRow(1)
self.filtrarLineal.clicked.connect(self.filtrarRecords)
self.cancelarLineal.clicked.connect(self.cancelRecords)
self.afegirLineal.clicked.connect(self.insertRecords)
self.eliminarLineal.clicked.connect(self.deleteRecords)
self.seleccionar.clicked.connect(self.seleccionarCodi)
self.tableView.doubleClicked.connect(self.probes_index)
self.tableView.activated.connect(self.actualitzarRecords)# Pres intro method
def probes_index(self):# metod for print index in row
indexes = self.tableView.selectionModel().selectedRows()
for index in sorted(indexes):
self.lblnomSeleccionat.setText(str(index.row()))
def seleccionarCodi(self):
index = self.tableView.selectedIndexes()[0]
id_seleccionat = str(self.tableView.model().data(index))
print ("index : " + str(id_seleccionat))
self.lblnomSeleccionat.setText(str(id_seleccionat))
def actualitzarRecords(self):
index_0 = self.tableView.selectedIndexes()[0]
index_id = str(self.tableView.model().data(index_0))
index_2 = self.tableView.selectedIndexes()[1]
index_probeedor_id = str(self.tableView.model().data(index_2))
index_3 = self.tableView.selectedIndexes()[3]
index_preuTarifa = str(self.tableView.model().data(index_3))
self.model = QSqlQueryModel(self)
self.model.setQuery("UPDATE `ProvaDB`.`preu` SET `preuTarifa`="+index_preuTarifa+" WHERE `id`="+index_id+" and`probeedors_id`="+index_probeedor_id+"")
def cancelRecords(self):
self.model.revertAll()
def insertRecords(self):
self.model.insertRow(self.tableView.currentIndex().row())
def deleteRecords(self):
self.model.removeRow(self.tableView.currentIndex().row())
self.model.submitAll()
def filtrarRecords(self):
self.model.setFilter("preu.id = '"+self.txtEditFiltre.text()+"%'")
if __name__ == '__main__':
app = QApplication(sys.argv)
if not crearConeccio():
sys.exit(1)
formMod = clasArticles()
formMod.show()
sys.exit(app.exec_())