I'm using a QtableView to display and edit data from a QsqlTableModel.
Everything's fine : data from a postgreSQL table is displayed, and user can edit it and save modifications.
I want to add a row when uses click on a button. I use the insertRecord method from my QslTableModel.
The row is correctly added in the QTableView.
My problem is :
I want to insert a value from a query in the first cell of this new row. (to automatically populate an unique identifier).
This is my code :
def ajoutlgn(self):
query_idNewLine = QtSql.QSqlQuery(self.db)
if query_idNewLine.exec_('SELECT sp_idsuivi+1 FROM bdsuivis.t_suivprev_tablo ORDER BY sp_idsuivi DESC LIMIT 1'):
while query_idNewLine.next():
identifiant = query_idNewLine.value(0)
#print identifiant
record = QtSql.QSqlRecord()
record.setValue(1,identifiant)
self.model.insertRecord(self.model.rowCount(), record)
The value is not inserted in the new row (but if I enter a value by hand, it works perfectly).
Nevertheless, the query is OK (as I can see with the « print identifiant » line, which returns the expected integer).
Do you see what I'm doing wrong ?
Are there other methods to insert programmatically a value in a QTableView cell?
Or do I have to use a QitemDelegate ?
Thanks for advance.
Finally I found the solution :
This line creates a record, but not a record for my QsqlTableModel
record = QtSql.QSqlRecord()
I replaced it with this one, and it works perfectly :
record = self.model.record()
Related
I have two region one form and one interactive grid like a master detail(company and company contact person ) how i can make the interactive grid mandatory ,the user can't submit page ,he/she need add at least one row in interactive grid ,
I can do that or I need to change the interactive grid to collection and count the row in validation
This one is a little tricky because of the way processes and validations work with Interactive Grids (they are executed once per submitted row). To work around this, I'll use a page item and a validation that works with it.
The basic idea of this solution is based on the fact that a new row will not have a primary key value. Here are the steps to reproduce (my example was on page 14, update the following as needed).
Create an Interactive Grid (IG) region. The primary key column should be Query Only (which ensures it's null for new rows).
Create a Hidden page item named P14_NULL_FOUND. Set Type under Server-side Condition to Never so that it never renders on the page.
Create an After Submit (before Validations) process. This process will NOT be associated with the IG so it will only fire once. Set the PL/SQL Code attribute to:
:P14_NULL_FOUND := 'NO';
That will clear out the value of the page item prior to the next process.
Create another After Submit process that runs just after the previous one. Set Editable Region to the IG. Then set the PL/SQL Code to something like the following:
if :PK_COLUMN_IN_IG is null
then
:P14_NULL_FOUND := 'YES';
end if;
You'll need to replace ":PK_COLUMN_IN_IG" with the name of the primary key column in the IG, such as ":EMPNO". This process will be run once for each submitted row in the IG. If a null value is found for the primary key column, then that would mean the user added a new row and the value of P14_NULL_FOUND would be set to 'YES'.
Create a new validation. This validation will NOT be associated with the IG so it will only fire once. Set Type to PL/SQL Expression. Set PL/SQL Expression to:
:P14_NULL_FOUND != 'NO'
Then set Error Message to something relevant.
At this point, you should be able to run the page and verify that the processes and validation are working correctly.
There is an another solution;
Create a page item like PX_ROWCOUNT which will hold the data of the row count of your IG.
Assign a static ID to your IG region.
Write a JS function to count the rows of the grid then set it to the page item. Sample function;
function f_setRowCount(){
var grid = apex.region("staticIDOfYourIG").widget().interactiveGrid("getViews", "grid");
var model = grid.model;
var rowCount = 0;
model.forEach(function (record) {
rowCount ++;
});
$s("PX_ROWCOUNT",rowCount);
}
To submit your page and run this function, change your submit button's behavior to Defined by Dynamic Action. Execute your function when user clicks to that button then submit your page via DA.
Add validation to Processing section of the page and check your page item there; PLSQL Expression => :PX_ROWCOUNT > 0
The solution by Hamit works nicely, except of the case of deletion of a row.
My suggestion is to amend the above code by adding inside the loop an if statement to check whether the row is editable or no.
So the code will be
var grid = apex.region("staticIDOfYourIG").widget().interactiveGrid("getViews", "grid");
var model = grid.model;
var rowCount = 0;
model.forEach(function (record) {
if (model.allowEdit(record)) {
rowCount ++;
}
});
$s("PX_ROWCOUNT",rowCount);
I have an interactive grid with a bunch of records, and I want to set up a button on the page that changes one column in all records currently selected.
Running APEX 18.2, the IG has a whole bunch of columns and I want to change just one of them, but on a whole bunch of rows, so I do need a button.
The IG has ROWID as PK because the actual PK is assembled from 4 different columns.
I have spent some time googling this issue and have found a couple people with solutions:
http://thejavaessentials.blogspot.com/2017/03/getting-selected-rows-in-oracle-apex.html
This is the first, and simplest solution. But it doesn't return any rowid or anything like that, it returns the value in the first column.
Then I also found
http://apex-de.blogspot.com/2018/09/update-several-rows-in-tabular-form-grid.html
and
https://ruepprich.wordpress.com/2017/03/23/bulk-updating-interactive-grid-records/
Which are pretty similair and seem to be the best for me, but I get a Javascript error in the console: http://prntscr.com/n5wvqj
And I dont really know much Javascript, so I dont know what went wrong or how to best fix it.
I set up a Dynamic action on button click that executes Javascript and I have the selected element being the region named CUR_STAT.
var record;
//Identify the particular interactive grid
var ig$ = apex.region("CUR_STAT").widget();
//Fetch the model for the interactive grid
var grid = ig$.interactiveGrid("getViews","grid");
//Fetch the model for the interactive grid
var model = ig$.interactiveGrid("getViews","grid").model;
//Fetch selected records
var selectedRecords = apex.region("CUR_STAT").widget().interactiveGrid("getViews","grid").view$.grid("getSelectedRecords");
//Loop through selected records and update value of the AVT_OBR column
for (idx=0; idx < selectedRecords.length; idx++)
{
//Get the record
record = model.getRecord(selectedRecords[idx][0]);
// set Value for column AVT_OBR on "D"
model.setValue(record,"AVT_OBR", 'D');
}
The column named AVT_OBR is a select list with display values(DA, NE) and return values(D, N). But I tried having it be a text field and it didnt help.
I want to be able to select multiple columns and change the data in those entries.
If possible I would also like to be able to change data in such a way in a hidden column. Or if I could get all the ROWIDs for selected records and execute a PLSQL block with them.
Ended up with noone responding so I spent a lot of time and finally came up with a solution.
var g = apex.region('myIG').widget().interactiveGrid('getViews','grid');
var r = g.getSelectedRecords();
for(i = 0; i < r.length; i++) {
g.model.setValue(r[i], 'myColumn', 'Value');
}
For some reason none of the solutions I found had worked. But I learned from those solutions and made this simple piece of code that does what I need.
Also, I was wanting to set up so I could do this set value on a hidden column, I achieved this by just having the column visible and editable, but then when running the page I clicked on the column and hid it, and set the current view as the default report.
If anyone stumbles upon this question, I hope it helps.
I'm retrieving a set of results from the database and I want to populate the QComboBox with the resulting columns from the database (each row of the QComboBox should have the same columns as database result) and after that I would like to be able to retrieve from one row of the QComboBox a specific column and use it further in the app. I'm thinking if it would be possible to add the QTableView to QComboBox. I'm want to do this because I want to add more meaning to the results in a way that some result columns are just plain numbers and other are the description information.
I found out that it would be possible to concatenate the result and populate the QComboBox but this will leave me with only one value for each row to work with and I have to explode the string to obtain the exact part that it is needed to work with.
The popup that comes by default is a QListView, this can be changed with any object that inherits from QAbstractItemView, and in this case a QTableView will be used for it to use the setView() method, the result when clicking only should return a item of the selected row, then to set the column to be displayed after being selected will use the method setModelColumn() indicating the position of the column, but before that the model is set to the QComboBox using the method setModel().
# my model
model = new QSqlTableModel;
model->setTable("person");
model->select();
# setModel
comboBox->setModel(model);
# select column
comboBox->setModelColumn(1);
QTableView *view = new QTableView(this);
comboBox->setView(view);
Note: The model is set to QComboBox, not to QTableView. Also you could have problems with the width of QTableView, so we must resize, in my case use the following:
view->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
view->setMinimumWidth(500);
The complete example can be found in the following link
I need to get the selected value in my qcombobox. It was populated from database, the QCombobox is named cbUser This is my function that populate the qcombobox:
for row in self.SELECT_USERS_ACCOUNTS():
self.cbUser.addItem(str(row[1]),int(row[0]))
The data is showed successfully in the qcombobox cbUser.
and I get a function to will get the value to the selected item:
def getValue(self):
id_us = self.cbUser.itemData(self.cbUser.currentIndex())
print(str(id_us))
The print shows and it's not the data, the correct data is an integer value for example 1 or 2 ....
Please help me, thanks in advance.
UPDATED:
The solution was to modify the first line code into getValue function (add .toPyObject()):
id_us = self.cbUser.itemData(self.cbUser.currentIndex()).toPyObject()
The solution was to modify the first line code into getValue function (add .toPyObject()):
id_us = self.cbUser.itemData(self.cbUser.currentIndex()).toPyObject()
With this I saw the value stored in the qcombobox.
I have problem getting selected rows from QTableWidget. I have table like this:
[id] [ key ]
0 test
1 pass
I want to get every row's key values. I tried QTableWidget->selectedIndexes(); but it says it's protected and I can't access that. When I tried QTableWidget->SelectionModel->selectedIndexes, I don't know how to loop through list and get the key values. Do anyone know better way how can I do it?
Regards.
I'm assuming that you set the selection behavior of your table widget to select rows.
You can always access the so-called "selection model" of any item view/widget. QTableWidget inherits from QAbstractItemView, which gives you access to this special model. This model can tell you the selected rows as a list of QModelIndex, which can then tell you the row. Once you've got them, you can access the table content, in your case the text in the column with index 1 (key column).
static const KEY_COLUMN = 1;
QList<QString> selectedKeys;
QItemSelectionModel *selectionModel = ui->tableWidget->selectionModel();
foreach(QModelIndex index, selectionModel->selectedRows())
selectedIDs << ui->tableWidget->item(index->row(), KEY_COLUMN)->text();
Because you are using QTableWidget, you probably want to be calling selectedItems(). Your results will be based on what you have set the selection behavior to, via setSelectionBehavior()
When you have a list of items, you can specifically get the second column item (if it wasn't selected already):
QTableWigetItem *keyItem = table->item(anItem->row(), 1);
QString val = keyItem->text();