I would like to request help for design something in Oracle Apex.
Our Apex users can add or delete new row to tables in a page. Also after they making addition they got cancel button to the whole page.
The cancel button suppose to bring everything to it's previous state. E.g delete added rows, un-delete deleted rows, undo change of rows..
My solution now is adding another column (Hidden) to the database, which handles the row state, but it's not clean, and not working perfectly.
I'll be happy for new ideas, whether is DB related or Apex related, Thanks.
It is common practice to use APEX collections for this sort of thing. Before first showing the page, populate APEX collections with a copy of the existing data from the real tables. Let the user add, delete and update rows in the APEX collections. The Save button would then invoke a process to make the corresponding changes to the real tables, and Cancel would just leave without making any changes,
Related
I am using ag-grid enterprise in my project where i am inserting data into the grid. Once the editing of data is completed i am pressing submit button to save the entries in the backend. Before saving there are some validations which i am performing by passing gridApi to the method and there gridApi.foreEachNode i am validating the data. I have a new scenario where if all the cells of the row is empty. The row should be deleted so that user should not have to delete every empty row before submitting. how can i delete the row node inside foreEachNode?
I recommend that build up an array of row ids for the empty rows as you iterate through forEachNode, and then once you are done iterating, use the ids from the array to delete the rows.
However, I'd like to recommend an entirely different approach...
That is, don't treat the grid as the "source of truth" for your data.
Rather, keep a data model in your application, and use the grid just as a visual component (though a complex one), that represents the data in your model.
React is particularly suited for this, as you can use, e.g. Redux to represent your model and provide operations on it.
In this scenario, you would do these operations on your model, and then update the grid with the new value of your model. And your model would then be in a good state to send to your back-end.
We're trying to implement a very basic functionality in ADF 11g using Jdev(11.1.1.7). We have one table in database which is exposed to the UI layer using ADF BC.
The requirement is to update a table when user selects one of the row. It will open a popup and then user can update the value in that dialog box. This works well but along with the current row, ADF framework is also updating the first row with the previous value of the update.
To update a row, we're using the standard commit button from the data control and then overidiing the DoDml method in EO to update additional fields.
Can someone share the details why this happening with each update and any solution for this?
Thanks,
LG
First, remove the selectedRowKey value from the table properties otherwise this will always select first row.
After the commit refresh the page or relevant component to load updated data to UI.
If you are updating additional fields using doDML make sure to commit the data and refresh UI to load updated data.
Commit is transaction level, if the Status of EO row is changed that row will participate in transaction. Either you need to change the status of other row to un-modify or you can override beforeCommit in VOImpl .
Thank you,
TR
I have a jsff page inside a bounded task flow. It displays a table. Each row of table has an edit icon. on click of which a new jsff page opens containing the information of the selected row ready to be edited.
Here user can update and save the information and check the information back on the first page by clicking a Done button on second page.Pretty much simple.
The problem is I have some complex implementation due to which I should not update the row information through ADF way. I take the information entered by the user and pass it to plane java file. There in the plane java file I instantiate an AM and update the information through this AM.
The problem with this approach is that when I click the Done button to come back on table page to check the saved data, the data on the table is stale.
This seems as If the table is being updated outside the ADF framework and so it is not aware of the underlying the data change hence the ADF UI table is not synced with physical table automatically.
JDev : 11.1.1.7.11
Options tried : Upon click of Done button I tried to requery the VO of ADF table by
1) Clearing the VO cache row and repopulating it
2) Re executing the iterator binding
3) Re executing the iterator binding programatically.
Thanks
I am new on jsp. I am providing the checkboxes in front of every row that are being fetched from DB. Now I want to delete the rows whose checkboxes have been checked.
Please suggest how to achieve this task on submit of form.
I can make the delete query at my end but issue is with check boxes ticked or not ticket approach.
Do we have any way as request.getParameter("delete_checkbox").value or something like this?
This is what you need :
http://theopentutorials.com/examples/java-ee/servlet/getting-checkbox-values-from-html-form-in-servlet/
As shown in the tutorial in value attribute pass the Id of your records.
Parse them to Long in servlet and make a server hit to delete.
I have following requirement.
Display data in a table
Clicking on checkbox filter out currently displayed rows by some condition
Clicking on checkbox once again return data appearance to it's previous state
To achieve this I've ovverided method rowQualifies in my ViewObject which is simple SQL based view object to apply my custom filter logic.
When user clicks on checkbox I refresh view object data to apply filter
viewObject.setDoFiltering(true);
viewObject.setQueryMode(ViewObject.QUERY_MODE_SCAN_VIEW_ROWS);
viewObject.executeQuery();
It works perfectly, data set updates without interacting with database and my custom filter logic applies as well.
But when I need to cancel filter it wouldn't work because iterator doesn't contain anymore previous rows, and I can only load them from database but it means that I can lose my changes already made to view object rows.
So, when I do
viewObject.setDoFiltering(false);
viewObject.setQueryMode(ViewObject.QUERY_MODE_SCAN_VIEW_ROWS);
viewObject.executeQuery();
It will return me those rows that were displayed previous time.
If I do
viewObject.setDoFiltering(true);
viewObject.setQueryMode(ViewObject.QUERY_MODE_SCAN_DATABASE_TABLES);
viewObject.executeQuery();
It will return me all rows, but I will lost my changes already made to view object rows.
My questions is how to avoid it? Maybe there is another way of doing this? Maybe it is possible to do something with RichTable to tell it how to filter rows in memory.
Any advices are warmly appricated!
I believe this can be done using ViewCriteria, to filter means to apply a ViewCriteria, and then disable it to view all your data