Javascript is particularly useful to make forms more interactive and therefore more user-friendly. These functions are available in Application Express for a long time. And the names are so nicely short and quickly typed. But actually this is shortcut syntax for the functions within the "apex.

And within apex. Before having a closer look into the functions of the apex. Your page will remain maintainable, all the functionality will be reflected in the Application Express Dictionary Views and you will have to care for less code.

Use custom Javascript and the functions explained below only when dynamic actions are not possible or not appropriate. Given that, let's now get into the apex. Make sure that it contains a bit more than simple text fields select lists, radio groups or check boxes and perhaps a date picker. Example form: Table EMP. Now open the Javascript developer console in your browser typically you have to press F12 for this.

Javascript developer console in your browser.

oracle apex select list set value

Now you can start trying out some Javascript functions. Let's start with retrieving item values. Work with Javascript and page items in the developer console. Multiple values for check boxes will be returned as an array.

You will get the Return values, which are most often numeric keys. But sometimes, the developer needs the Display value - which is no problem for the displayValueFor function. Retrieve the display value for a page item based on a list of values. For a Popup LOV, where the list of values is now known to the browser it would typically be too largethe function will not work.

It supports the differences and specialities of the various item types. So, when executed on a select list, the browser will automatically select the correct option.

Beginners Guide to List of Values in Oracle APEX

Note that you have to provide the return value for page items based on list of values. To set multiple values e. As already mentioned, for Popup LOV items the browser does not know the list of values. So, if only the return value were provided, APEX would not know what to display, so it will actually display the return value. Thus apex. Note that you only need this for item types like Popup LOVs.

For the popup LOV item type, setValue can set return and display values. By default, using setValue will lead to the same sitation as if the end user had manually modified the item value.

So the browser will fire the change event, Dynamic Actions for that change event will be fired and their functionality will be executed. In some situations, developers want to change a page item's value but to not have dynamic actions fired. For these cases, use the third " pSuppressChangeEvent " argument of the setValue function as follows.

Now dynamic actions to be executed on change will not execute.The apex. This API returns an Application Express item object, which can then be used to access item related functions and properties. Item objects can apply to either page items or column items. Page items are items on the page backed by session state in any region. Column items are created by region types such as Interactive Grid that support editable columns. The state of a column item, including its value, changes according to the editing context of the region.

Plug-in developers can override much of the behavior defined in the apex. Application Express item name or DOM node. This parameter can refer to either a page item or column item. Returns the Application Express item object, which is used to access item specific functions. For example getValuesetValueand so on. This will not be used by itself, rather it is used to access item specific functions and properties, as documented in the following APIs.

Disables the Application Express item value, taking into account the item type, making it unavailable for edit. Returns the display value corresponding to the value given by pValue for the Application Express item. If the item type does not have a display value distinct from the value then pValue is returned; meaning that the value is the display value.

For item types that have a display value but don't have access to all possible values and display values then this function only works when pValue is the current value of the item. For item types such as select lists that have access to all their values, if pValue is not a valid value then pValue is returned.

The string display value corresponding to the given pValue as described above. Enables the Application Express item value, taking into account the item type, making it available for edit. If a plug-in item implements its own validation then the object may not contain all the fields defined by HTML5. At a minimum it must have the valid property.

If the item doesn't support HTML5 validation then it is assumed to be valid. This function does not actually validate the item value. For many item types the browser can do the validation automatically if you add HTML5 constraint attributes such as pattern. Developers rarely have a need to call this function. It is used internally by the client side validation feature. Item Plug-in developers should ensure this function works with their plug-in.

Return a validation message if the Application Express item is not valid and empty string otherwise. The message comes from the element's validationMessage property. An APEX extension allows specifying a custom message, which overrides the element's validationMessageby adding a custom attribute named data-valid-message.

If the item has this attribute then its value is returned if the item is not valid. As the name implies the text of the message should describe what is expected of valid input rather than what went wrong. Returns the current value of an Application Express item on a page, taking into account the current item type. This does not return the item's current value from session state although that could be the samerather it will return the value as it is on the current page.

There are 2 related functions to. This will either be a single value, or if the item supports multiple values, will be a ':' colon separated list of values.If it is, please let us know via a Review Reviews Write a Review really needed?

April 12, - am UTC. You can also catch regular content via Connor's blog and Chris's blog. Or if video is more your thing, check out Connor's latest video and Chris's latest video from their Youtube channels. And of course, keep up to date with AskTOM via the official twitter account. Questions Update an ordered list value with consecutive numbers. Question and Answer. Latest Followup. You Asked I need to reset an ordered list to be consecutive numbers ints while maintaining the original ordering.

Thanx, D. Write a Review. Hi, A tricky problem elegantly within Oracles constraints solved. However I would question the business case of materializing this. If it got ragged once it may happen again. Do you intent to do this regularly? Gap free sequences are a myth. Ah yes, the old triangular join. I avoid them like the plague.

After thinking about it some more I came up with: update T1 t set t. The data is purely ordinal and magnitude is immaterial and never displayed to end users. Unfortunately, it makes the director happy to have gap free sequences. At least it's a utility for a presumably one time update. We've addressed the code to prevent the condition at the source.

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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Cascading select lists are refreshed through ajax. Change select list 1, select list 2 will be refreshed. You execute plsql, which in turn will set the value of the items involved.

Both are select lists, and one is dependent on the other. So while both will be set, the change of the first one will cause the second to be refreshed. In other words, you're doing it too fast. And while there is a solution, the proper way is a bit complex and I wouldn't build it in DA's personally.

You haven't specified how or when you call the code which sets the values for the items. I think there is some confusion here. If that is not the case, please clarify. I am not sure what you are trying to achieve here. But I assume, you want to allow the user to select the Country first, and then based on that, you want to refresh the Cities list to display the cities in that particular country.

You do not need the dynamic action. The child list, should refresh upon the change of the parent list. The answer heregoes in details about how to implement cascading list. Learn more. Asked 3 years, 7 months ago. Active 2 years, 8 months ago. Viewed 9k times. I have two select lists 1. The first selected list value changes but the second list never changes. I don't whan to submit the page instead of dynamic action How can I change list values in this case please?.

Thanks in advance.

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Create a dynamic action IG row initialization to set value for newly created record by below JS code.

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I am not sure what I am doing wrong. But in case there are dynamiceg. It seems Okay for me. Add row display NO as default. Save row display NO. Or no? I have placed the above suggested code in you sample app. The same problem appears if you have a more 'complicated' LOV based on a query assigned to a grid-field. If you default a field with a return value not the display valuethat value will be displayed in stead of the look up value of the LOV, which is expected, just as in normal items.

Seems like a bug to me. Error: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled. Please turn JavaScript back on and reload this page. Welcome to Oracle Communities. Would you be able to show an example of what the display looks like?

oracle apex select list set value

Because the attributes screenshot seems OK. Remove the default option from attribute and set value manually for added row.As is common when first developing an application, this table is based on a spreadsheet, where none of the columns are normalized.

In the original spreadsheet, columns are generally free format. Data must be manually checked and corrected if only certain values should be entered into a specific column. In Microsoft Excel, for example, you can add data validations to limit data entry, but rarely are features used. In particular, notice that the Status field is a standard text item that allows any input. Decision time! At this point you need to make a decision whether end users are allowed to enter any status, whether the current values are the only allowed statuses, or whether you want to restrict data entry but want to be able to add additional statuses in the future.

oracle apex select list set value

However, a column such as Status should generally be limited to ensure everyone uses a small set of values. For this blog, we are going to restrict Status input to the current values in the table. Now you have more choices on how to implement the list:. For simplicity we are going to create a static list for a Radio Group directly on the page.

In the Property Editor right paneenter the following:. Radio Group. Number of Columns. List of Values. Static Values. Display Extra Values. Display Null Value. Display Value. Return Value. Navigate back to the Runtime environment, refresh the browser and click on the edit icon for a record. If instead of 4 or 5 values you have a larger selection than Select List is generally a better choice.

Select List. Null Display Value. It also uses distinct to ensure only one of each status is returned.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

APEX20 of 30: Cascading LOVs. Selection in one sets the list in another. Radio group vs. checkbox.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Cascading select lists are refreshed through ajax. Change select list 1, select list 2 will be refreshed.

Oracle forms lov return value

You execute plsql, which in turn will set the value of the items involved. Both are select lists, and one is dependent on the other. So while both will be set, the change of the first one will cause the second to be refreshed. In other words, you're doing it too fast. And while there is a solution, the proper way is a bit complex and I wouldn't build it in DA's personally.

You haven't specified how or when you call the code which sets the values for the items. I think there is some confusion here. If that is not the case, please clarify. I am not sure what you are trying to achieve here.

But I assume, you want to allow the user to select the Country first, and then based on that, you want to refresh the Cities list to display the cities in that particular country. You do not need the dynamic action. The child list, should refresh upon the change of the parent list.

The answer heregoes in details about how to implement cascading list.

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Learn more. Asked 3 years, 8 months ago. Active 2 years, 8 months ago. Viewed 9k times. I have two select lists 1. The first selected list value changes but the second list never changes. I don't whan to submit the page instead of dynamic action How can I change list values in this case please?.

Thanks in advance. Saddam Meshaal Saddam Meshaal 1 1 gold badge 7 7 silver badges 21 21 bronze badges. Active Oldest Votes. Tom Tom 6, 1 1 gold badge 20 20 silver badges 36 36 bronze badges.

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How does it 'not work'? I can't help if you don't clarify. The reason you described is the exact reasoning I gave in my answer. My point in it is exactly that: set the country id, let the cities refresh, and then set the city id.