Assume we have a XamDataGrid with 10 columns.
Column 1 is a XamComboEditor bound to a collection in the model
This can't be changed, the data is coming from a server and the combo's collection is based on different selections within the model so it's very dynamic.
Columns 2 - 10 are just normal alpha numeric fields
The problem:
When you enter a alpha numeric and start typing the model is initialized and everything is fine. However, if you go to the very last row, the non-initialized empty one, and click on the combo editor before entering any data into any of the other fields, the combo editor is empty.
Now I am well aware of why this is happening, it's clear that this is due to the model not being initialized yet. I'm just not sure the best method to fix this.
I would hope there is a property on the XamDataGrid that adjusts when the record is initialized but I've searched the Infragistics documentation and examples and I can't find anything.
There are events for:
EditModeStarting
EditModeStarted
EditModeEnding
EditModeEnded
private void OnCellEditModeStarting(object sender, EditModeStartingEventArgs args)
{
if (args.Cell.Field.Name == "TotalQuantity")
{
DataRecord record = args.Cell.Record;
if (record == null)
return;
MyGridEntry item = record.DataItem as MyGridEntry;
// Do a thing
}
}
You can also respond to the InitializeRecord event. It can fire for multiple reasons, such as cell editing, so check the state of your row model when responding to it. All these events are on the parent grid, not any FieldLayouts or Fields.
<i:XamDataGrid x:Name="myGrid"
InitializeRecord ="OnInitializeRecord"
EditModeStarting ="OnEditModeStarting">
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 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()
I have a QSqlTableModel and I want to insert and update records in it with a special form in a child-window. It's a design choice not to allow "inline editing" which I disabled on purpose.
When the user selects an entry (which can be sorted and filtered through a QSortFilterProxyModel and is presented through a QTableView), he has three options (represented by buttons): delete, edit and add.
My problem is with editing:
The parent-widget emits a signal with a given record and executes a model child-view
The child-widget prepares a form based on the record, waits for user input, validates it, creates a record and sends it back to the parent-widget.
The parent-widget takes the record and puts it into the database.
And right here is the problem! One can get the right record by row quite easily, like so:
void Parent::on_button_edit_record_clicked()
{
// Table could be sorted/filtered!
row = proxyModel->mapToSource(ui->tableView->currentIndex()).row();
QSqlRecord r = model->record(row);
emit editRecordSignal(record);
child->exec();
}
void Parent::editRecord(const QSqlRecord &record)
{
model->setRecord(row, record);
}
As you can see, I manually save the row of the record I want to update. I don't think this is a nice way to handle this. Actually it seems rather hacky to me.
What I missed was an easy way to translate a primary key to a row and vice versa. Like:
void Parent::editRecord(const QSqlRecord &record)
{
model->setRecord(model->primaryKeyToRow(record->value("id")), record);
}
Is there any way to easily do this (without having to extend the QSqlTableModel), so did I miss something or do I really need to save the row manually to achieve what I want?
As I posted several times over the past few months, I'm writing a journal/diary application in Qt. Entries are sorted in a QTreeWidget by year, month, day, and entry (default config that sorts entries by day) or by year, month, and entry (where all entries from the same month are grouped together)
The entry nodes have two columns: The first one is visible and holds the entry name. The second column is invisible and holds the row number of the corresponding entry in the database. When that entry is selected, the program does a select query based on that row number and displays the content. Root, year, month, (and day, if enabled) nodes also have a second column but the row number on those is always -1. (valid row count starts at 0)
The journal toolbar already has back and forward buttons that lets the user view the next and previous entries. While this function already works, the current selected item in the tree doesn't change with it, and that's what I’m trying to fix.
I've decided that the best way to do this is a loop function that scans the second hidden column values of each until the correct row number is found. Each click of the back/forward buttons will call this function again so the selected node will always match the current entry being viewed once I get this working.
The drawback is that this method can be slow if the database gets huge, but there's not much I can do about that. The user may delete entries or shuffle them around, so simply relying on rownumber++ or rownumber-- could cause problems. Since the database doesn't fill in missing row numbers but just goes on to the next one, there could be problems if the program always assumes that every row ever made in the database still exists at any given time.
My question is how do I scan a particular column of every node in a QTreeWidget?
Iterating through all items can be done with:
QTreeWidgetItemIterator it(treewidget);
while (*it) {
if ((*it)->text(column_number)=="searched")
break;
++it;
}
but maybe QTreeWiget::findItems() is just what you need.
Also look at QStandardItem::data(), it's a better way of storing per-item hidden data, compared to a hidden column.
def iterator_treewiget(self, widget:QTreeWidgetItem, content:str):
for i in range(widget.childCount()):
item = widget.child(i)
text = item.text(0)
if content in text:
self.treeWidget.setCurrentItem(item)
return
self.iterator_treewiget(item, content)
def search_in_tree(self):
content = self.lineEdit_2.text().strip()
if content:
root = self.treeWidget.invisibleRootItem()
self.iterator_treewiget(root, content)