I have a very simple Oracle Apex app. I created a button on the home page. I also created a second page using the "Form" template, and the source for this form is a table in the local database.
I set the button to open the form, and I passed the value of the primary key of this form (it's a column called ID) from the home page to the form page, as this screenshot of the button's behavior shows (3 is the page number of the form, P3_ID is the page item in the form associated with the primary column "ID", and 1 is the value that I passed for P3_ID):
The table that the form references is empty, i.e. there is no row with ID equal to 1. Meaning I want to pass the value of 1 to this form so that it automatically create a row with ID of 1 after the user fills out the rest of the form. Here is the form page:
Now the error. When I run the app and press the button, I get this error:
The error says it's from the process called "Initialize form Warcraft Particulars". I searched everywhere and I couldn't find a process by that name anywhere in the app. What am I doing wrong?
Pre-rendering process (in a form) will try to execute query and fetch a row whose ID = 1; as it doesn't exist, Apex raises the no_data_found error. That's why you got it (the error).
Moreover, you're doing it wrong - don't pass ID you'd want to create, fill it in form's process (or use a database trigger which will put a sequence number into the ID column, or use an identity column if your Oracle database supports it (12c onward)).
Furthermore, I'd suggest a slightly different approach: don't create a form that's alone in the Universe. Approach that lets you both view existing data, update (or delete) it and insert new rows is to use a Wizard and choose a report with a form. Exact naming is different from one Apex version to another; for example, current apex.oracle.com Apex version is 22.2 and it offers "Interactive report", while the 1st Wizard page lets you choose whether you want (or not) to include a form page (you'd say "Yes").
Anyway: once you find the correct option, choose it and wizard will then create an interactive report page you'd use to
view current data
it has an edit icon at the beginning of each row which - when pressed - navigates to the form page where you can edit values or delete entire row
create new row (by pressing the "Create" button)
and a form page which does what I described a moment ago.
Related
I am beginner in Oracle APEX (Version 22.11) and I hope, that someone can help me:
I have an Interactive Report as Parent Page. I get the data with a (simple) sql query. There is also a Create-Button, which works fine. It opens an empty Modal Dialog Form, where I can fill in the entries. There is a dynamic action, which refresh this Interactive Report by Closing Dialog.
On another page I have this Modal Dialog Form, which use the same sql query as the Parent Page and have the four button 'Cancel','Delete','Save' and 'Create'. I choose also a primary key and do different setting:
under 'Processing' I make Form - Automatic Row Processing(DML) and also Yes to 'Return Primary Key(s) after Insert
for the 'Save'-Button I have the following Behavior:
Action: Submit Page
Database Action: SQL UPDATE action
Also I have for this button the following Server-side Condition:
Type: Item is NOT NULL
Item: [Item of the primary key]
Now, I have the following problem with this Save-Button (the other buttons works fine): When I edit the Radio Button or the Textfield in this Modal Dialog Form and click the Save-Button, the Parent Page takes over the changes. But when I change the Textfield of the primary key Item or when I change another Textfield or a Radio Button together with this Primary-Key-Textfield, the Parent Page doesn't take over the changes.
Where is the mistake? Can anyone help me?
I think what happens is something else than what you think is happening. As a test I created an interactive report with a form on the EMP sample table (you can generate that in SQL Workshop > Utilities > Sample Datasets). Out of the box the report refreshes when a change in the modal form is submitted. In the modal form P102_EMPNO is marked as primary key.
No what does that mean ? It means that that page item is used by the apex engine to uniquely define the row when executing dml (update/delete) on that row.
I changed the page item P103_EMPNO to a text field, enabled debug and submitted the form. This is what debug shows:
As you can see, the where clause of the update statement is:
where "EMPNO"=:APEX$PK1
I'm assuming the bind variable :APEX$PK1 is what the apex engine has decided is the bind variable for the (first) primary key column in the form.
So... if you change the primary key, then it is NOT going to update the primary key for that row. Instead it is going to try to update a row that has the newly entered primary key value. And the refresh you're expecting is not happening... because no rows were updated.
The reason is that primary keys should never be changed during normal operation in a relational database. They uniquely define the rows - that is what a primary key does. The form region is based on this principle and the behaviour that you're seeing is expected. Also, the reason that the primary key page item is hidden or display only when a form is created is that a primary shouldn't be changed.
Now if you really want to change the primary key value (my advice: DONT. EVER.) then you can probably create a form yourself and use the rowid to identify the row. Out of the box the form region does not let you select the row id.
I have created a page based on "Form & Report" template. So there is the Report page on which there is the create button. That create button leads to the form page which contains.
It is pretty simple. I don't know if there is a cache memory not emptying itself or if there is a setting that I have not properly set.
When I want to create a new database record, Oracle Apex behaves as if I asked it to update a record (though it still presents me with empty text fields).
Below the image of what's happening.
Create button of the Report
Buttons for edit are shown when I click the create button
Those edit buttons are shown instead of the buttons below => This means that the Apex software is behaving like I asked to edit a record not to insert a record.
Why is this happening?
You need to take a look at your create button. Is it passing a value to the form? If so, you probably don't want that. Is it clearing the cache of the form? If not, you probably want to clear it.
Also, on the form page take a look at your processes.. specifically the Automated Row Fetch (ARF) process.. what's the primary key that this process is using?
Also, take a look at the conditions for each button on your form. For the delete/save buttons you likely want a condition type of "value of item / column in expression 1 Is NOT NULL".
For your create button you would want the opposite.. "value of item /... IS NULL".
In both cases for the expression 1 you'd want to use the item that your ARF is leveraging.
#Bloomberg58 if you used the wizard that should not have anyway try to validate the create button in report page and the server-side validation of create and save button in form page
I have a blank page with a static content region (Template = Form Region). I select a project via a select list (there is only one project, so it automatically selects it). I then have a key popup lov (a popup lov that displays the description not the returned number value) from which I select a person to be in this project. I am trying to get the form to display the person I selected and saved previously when the form launches for the first time (since the project is chosen due to there being one). This works when you refresh the page, but it doesn't work if you log out and log back into the form. I tried using the default value with a sql query. I tried using a dynamic action that fires when the project changes; but neither approaches work. I fiddled with all the settings, but couldn't get anything to work. Does anyone know how to accomplish this in Oracle APEX?
I even added a refresh of the cascading popup lov to the dynamic action. I can see the hidden input item showing my defaulted value, but the popup lov does not display it on screen. Is this an Oracle bug?
Also in Javascript from the console
$s("P51_LINE_MANAGER1", "7104");
sets the hidden value, but doesn't display on screen.
$v("P51_LINE_MANAGER1");
does however return 7104.
I am a relative APEX noob.
I'm running APEX 4.0 against a 10gR2 database.
I've written a query that takes a few inputs (two date fields, for start and end, and a text field for further filtering) and created a dynamic report out of it that works when I pull the input variables (:START_DATE, :END_DATE, :OFFICE) out of it or replace them with static values.
I want to create a form on a page that submits those values to the dynamic report page for use in the query to filter the results the user sees when he or she hits the report.
I'm not having much luck finding a good step-by-step example of this. I created a blank page with two Date Pickers and a LOV select dropdown, but am unsure how to best translate those values into the dynamic report.
Can somebody point me at the right documentation for this?
The following was developed using Apex 4.1 but apart from some cosmetic changes the principles should be the same.
The data comes from the standard scott.emp schema.
Overview
This is page 1, the user can enter an empno and\or a hiredate.
When submit is pressed the following report on a different page is displayed:
How it works
On page 1 I have created the three items shown. The text items are called them P1_EMPNO, and P1_HIREDATE. The action for the button is "Submit Page"
Still on page 1, create a branch with the following values:
This branch navigates to page 2 (which is yet to be developed) and sets the values of items on page 2 with the values from page 1.
Create a new page, in this example this will be referred to page 2.
On page 2 create a new interactive report using the following query:
select e.*
from emp e
Next create two text items in the same region as the report and call these :P2_EMPNO and :P2_HIREDATE. I have found it useful to show these items during development so you can see that the correct values are being passed through to the page. You can always set them as hidden once you happy with the report.
Finally amend the query used by the interactive report to use the values supplied by page 1
Run the application.
You want to reference your page items in your query, which means you'll have to submit your page before your query will pick up the session state of them. What I do when I provide a small parameter form, is to put a button up there as well (i.e. labeled 'Query'), which does a submit.
In your report you can then reference your items. If for example you have 2 items P1_DATE_START and P1_DATE_END, your query could look like:
SELECT firstname, lastname, job
FROM employees
WHERE employment_start BETWEEN to_date(:P1_DATE_START) AND to_date(:P1_DATE_END);
I have a joomla site where users can log in. Once logged in, a user can display a list screen -- say, a contact list with a name column and a phone number column. I call it a list screen, but I guess it could be called a list view, grid view, etc.
I'd like to make one of the columns (say, the phone number column) editable in place; meaning, I don't want to force the user to open a contact editing form. Thus, in the phone number column, a text box should be displayed on each line. The textbox contains the existing data for that row. The user can change the phone number in the text box directly in the list screen, and then press some 'save' icon on that row to save only that row (and only if it has changed). It'd be nice if the saving was done with an AJAX request, but it'd be ok to submit a form for now.
Based on the 'list screen' in the book "Learning Joomla Extension Development", I can currently display the correct list of items for the user. Does any one have example/tutorial of how to do the saving of each row individually? It seems like all list screens that I see have a link which must be clicked to open an edit form, as opposed to allowing editing in place.
Thanks
You have to write a component first. Which will basically do the saving part of the individual row. So basically your component URL takes parameter as row_id phone number etc and have a update query updating the database.
Second is you need to write a javascript function which is called on click of every save button. The javascript function reads row details by reading from the DOM. and then fire an ajax request to the above mentioned component. the URL to the above mentioned component should have format=raw.
The result from the component update queries can be returned as true or false. And accordingly read by javascript ajax response. based on which A flag could be shown saying row updated. I can help you with code further if you describe it in more details