[PyQt] QSqlTableModel without view

[KONTRA, Gergely]

[sorry for the posting more messages, but I figured out now, that my
subscription address was wrong, and I got no error message from the list,
that my messages will not appear :(]

Hi!

I am a novice pyqt developer.
I will develop a pyqt program, which will periodically will get
measurement data, and display it visually. That's why I have chosen to
store it in sqlite database. Measurements have some metadata, so I
thought they should also go to the same db, in an ini like table
(table name preferences, key and value are strings).

I have written 2 classes for that, but that does not seems like a
straighforward solution...  I hope there is a cleaner and more
efficient way...

class BatteryDb(QSqlDatabase):
       @classmethod
       def addSqlDb(cls, filename=None):
               db = QSqlDatabase.addDatabase("QSQLITE", 'battery')
               # if filename is None FIXME
               db.setDatabaseName(filename)
               db.open()
               return db

       @classmethod
       def removeSqlDb(cls, db):
               print("battery db delete")
               db.close()
               QSqlDatabase.removeDatabase('battery')

class IniTable:
       def __init__(self, db, table, parent=None):
               self.model = QSqlTableModel(parent, db)
               self.model.setTable(table)
               self.model.setEditStrategy(QSqlTableModel.OnManualSubmit)
               self.db = db
               self.model.select()
               self.build_indices()

       def build_indices(self):
               self.indices = {}
               for i in range(self.model.rowCount()):
                       self.indices[self.model.record(i).value('key')] = i

       def __getitem__(self, attr):
               return self.model.record(self.indices[attr]).value('value')

       def __setitem__(self, attr, value):
               if attr in self.indices:
                       idx = self.indices[attr]
                       record = self.model.record(idx)
                       record.setValue('value', value)
                       self.model.setRecord(idx, record)
                       # idx = self.model.createIndex(self.indices[attr],
self.model.fieldIndex('value'))
                       #self.model.setData(idx, value)
               else:
                       record = self.model.record()
                       record.setValue('key', attr)
                       record.setValue('value', value)
                       res = self.model.insertRecord(-1, record)
               #self.build_indices()
               print('.')

       def submitAll(self):
               self.model.submitAll()

+-[ Gergely Kontra <pihentagy at gmail.com> ]------------------+
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