apply change to filtered rows is it possible?

[jaafari]

no bro i am sorry i don't know


can you tell me how

[wysota]

You use the QAbstractItemModel::setData() method. In general if you want to use models, you should read about them first.

[jaafari]

and how to use QAbstractItemModel::setData() ?

[yeye_olive]

and how to use QAbstractItemModel::setData() ?

Easy:

1. you stop being lazy;
2. you go read the documentation as you were already advised to;
3. you try to solve your problem;
4. you come back and explain the approaches you tried, and ask specific questions.

Does that sound reasonable to you, or would you rather have other people do for free the work you are paid for?

[jaafari]

Does that sound reasonable to you, or would you rather have other people do for free the work you are paid for?

i am not a programmer bro.. i am just here to learn and in fact there is no documentation in my language thank you

[wysota]

i am not a programmer bro.. i am just here to learn and in fact there is no documentation in my language thank you

There is documentation in English. This forum is English. If you can't understand English documentation, how are you going to understand my English explanation?

[jaafari]

There is documentation in English. This forum is English. If you can't understand English documentation, how are you going to understand my English explanation?

it is very difficult for me and in some conversation i try translator (thanks to google).. i hope one day other people can find Qt in other languages

[jaafari]

any help guys or should i pay to someone to tell how?

[anda_skoa]

any help guys or should i pay to someone to tell how?

What's wrong with the solution already given in comment #11?

Cheers,
_

[jaafari]

my dear i just want an example even if i will pay for it no problem

---

Added after 5 minutes:

Easy:
Does that sound reasonable to you, or would you rather have other people do for free the work you are paid for?

give me a example pravite and i am ready to pay for it.. just tell me how much that will cust?

[wysota]

I can give you an example for free.

model.setData(model.index(0, 0), 7, Qt::EditRole); // sets 7 into default role of item (0, 0)

model.setData(model.index(0, 0), 7, Qt::EditRole); // sets 7 into default role of item (0, 0)

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[jaafari]

and what about combobox:

void myEditDialog::on_myFirstComboBox_currentIndexChanged(int index)
{
 
}

void myEditDialog::on_myFirstComboBox_currentIndexChanged(int index)
{
   
}

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should i do it like this?

[wysota]

What about it?

[jaafari]

i mean should i use it in this way?

void myEditDialog::on_myFirstComboBox_currentIndexChanged(int index)
    {
     model.setData(model.index(0, 0), 7, Qt::EditRole); // sets 7 into default role of item (0, 0)
    }

void myEditDialog::on_myFirstComboBox_currentIndexChanged(int index)
    {
     model.setData(model.index(0, 0), 7, Qt::EditRole); // sets 7 into default role of item (0, 0)
    }

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[d_stranz]

So every time someone selects a different item from the combo box, you want to store the value 7 into item( 0, 0 )? Why?

Why don't you try to explain what you really want to do when someone changes the combo box selection?

[jaafari]

in my diagram below i have a form with a lineedit a tableview a combobox..
in my database table i have 4 columns and many rows and this columns are: ID , Name , Filter Code , Other Data... and i am just working in tow columns.. Name and Filter Code columns..
and as i am showing in my diagram in column (Filter Code) there are alot of rows but they divided into groups and every group has a different number which is that (filter code ) the lineedit displays the filtered number.. for example if it is 22 the filter code column in tableview displays only the group with that number..

now the combobox displays column (Name) contains which is name1 , name2 , name3 , name4... i assume that the column (Name) in tableview displays name2 and the 22 group belongs to that name.. the combobox should display the same name which is name2 and if we change the contain in combobox the change should be applied to all the rows that belongs to the group that already filtered by the number 22 which displayd in lineedit..

this is already happened because i am using QDataWidgetMapper but the change apply only to the last row not to all rows which i want..

in my form i am using: QLineEdit QComboBox QTableView , QSqlRelationalTableModel , QSortFilterProxyModel , QDataWidgetMapper..

wolcome

[d_stranz]

I am sorry but I don't understand what you are trying to do.

Do you want to change the database? (That is, if the user types a new name into the combobox do you want "newName" to replace "name2" in the database)?

Do you want to select something new from the database (read only) when the user changes the combobox selection or enters a new code in the line edit?

[wysota]

Call it on your model passing the index, value and role in the model you wish to change (e.g. Qt::EditRole).