Problems with customizing select lists and popup LOVs

Hi
I have 2 problems about select lists and popup LOVs.
The first one is about a select list in a tabular form.
It should be created with APEX_ITEM.SELECT_LIST_FROM_LOV or similar and take its values from a named LOV.
This worked fine but now it should also have the possibility to enter a free value.
I tried to accomplish that by creating a APEX_ITEM.POPUP_FROM_LOV, but there is a problem with the function that is called by the arrow icon right to the input field (for eg. genList_f11_5()).
If the row is added by addRow, then it works fine, but if the row is is not empty
then the function call is like genList_f11_$_row() and the input field gets no value, when a LOV option is selected.
The other problem is about a select list which should have the possibility to enter a custom value and
also there should be the possibility to select several values. I tried to implement this by a text area containing the selected values and a multiple select list, with an event handler in each option. The user could click options and they would be copied to the text area. The problem is that I couldn't make the event handler work in IE.
I would appreciate any ideas about either of these problems.
Tiina

Hi,
If you download application you can see source.
I have not write any instructions, sorry.
If you are on Apex 4 you can just load jQuery UI autocomplete library and take ideas from my app.
If you download my sample in zip there is uncompressed htmldbQuery library.
You can see that and take only function htmldbAutocomplete.
Then check jQuery UI document
http://jqueryui.com/demos/autocomplete/#method-search
There is method search that you can use open list just by click of input.
I hope this helps at start.
Regards,
Jari

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Hello,
No, you have to code that yourself. For instance by adding HTML in the Post Element Text field (like <IMG src=... />).
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http://roelhartman.blogspot.com/
http://www.bloggingaboutoracle.org/
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I have a form that currently has several fields defined as SELECT LIST, which works great when the list of items to be selected is small. However, one of the fields is a list of employees, which will be > 300, and I was thinking of using the POPUP LOV option. Mainly because of the Search capability - would like to just list those employees that are entered into the Search to show up in the list.
I have tried the POPUP LOV within a CREATE record form (using Auto Row Processing and Database Columns), and it pops up showing a list of employees (using the same SELECT statement as used when it was a SELECT LIST). So far, so good. When I select an employee, the employees name shows up in the field in grey text. So far, so good. However, I do not get anything helpful when I enter anything into the Search box. I just get a "The page cannot be displayed" in the window. Basically I am unable to search. Bummer.
However, when I look at the record that I just created, I do not see the employees name in the field anymore, I just see the employee's ID. I also get the following error message:
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Dang, I hate it when that happens. I have not been able to find any references to this error that would shed light on how to handle this error.
I followed the recommendation in the HTML DB User's Guide for Popup LOVs (Table 6-7 Available Item Types), to no avail.
The SELECT statement that is being used is:
SELECT ec.ename || ' - ' || s.site_name "Employee",
wss.wss_id "SEStaffID"
FROM wiser_se_staff wss,
vw_emp_contact@WISER_SA ec,
vw_site@WISER_SA s
WHERE wss.staff_emp_id = ec.empid
AND wss.staff_sch_location = s.site_id
AND ((:P205_REF_RECD_BY_ID IS NOT NULL
AND :P205_REF_RECD_BY_ID = wss.wss_id)
OR :P205_REF_RECD_BY_ID IS NULL)
ORDER BY ec.ename, s.site_name
I guess my questions are:
1) Why is APEX choking on the SELECT statement for the UPDATE and not the CREATE?
2) Why doesn't the SEARCH feature work, or probably more correct, what am I missing?
TIA

Scott,
Thank you for looking at this.
You are correct in your assumption - I was using the 'Popup Key LOV (Displays description, returns key value)' Display As option.
I have been able to isolate where the problem is. I reduced the 'List of values definition' to:
SELECT ec.ename || ' - ' || s.site_name "Employee",
wss.wss_id "SEStaffID"
FROM wiser_se_staff wss,
vw_emp_contact@WISER_SA ec,
vw_site@WISER_SA s
WHERE wss.staff_emp_id = ec.empid
AND wss.staff_sch_location = s.site_id
ORDER BY ec.ename, s.site_name
I then received the same error. So, I just changed the alias from "SEStaffID" to "SESID" and it then gave me the following error:
Error: ORA-00904: "EMPLOYEE": invalid identifier performing List of Values query: "select Employee, SESID from ( SELECT ec.ename || ' - ' || s.site_name "Employee", wss.wss_id "SESID" FROM wiser_se_staff wss, vw_emp_contact@WISER_SA ec, vw_site@WISER_SA s WHERE wss.staff_emp_id = ec.empid AND wss.staff_sch_location = s.site_id ORDER BY ec.ename, s.site_name ) wwvlovinlineviewname where SESID = :WWV_LOV_RETURN_KEY_UTIL_1111".
So, I then eliminated the concatenation that was part of the first field so that it was then 'SELECT ec.ename "Employee",' and left the rest of the SQL statement alone. I received the same error message. I then eliminated the "Employee", resulting in 'SELECT ec.ename,' and reran it - the LOV then worked properly, showing a list of employees, and I was able to search the list as expected.
There is something about using the alias on the fields that it just does NOT like.
I just did another test, and it appears it is just when the alias is on the first field that it chokes. I removed the alias from the first field, and left the alias on the second field, and the LOV worked just fine.
TIA,
Tom

Select list and subquery: "LOV query is invalid"

Hi all,
I want to create a select list with the following format:
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1 error has occurred
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Even this doesn't work:
select table1.field1 || (select 'a' from dual) d,
table1.field2 r
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Edited by: MalcA on Jan 22, 2010 12:14 PM

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Hi guru's,
is there anybody around who experienced a similar phenomenon !!!
regards
Thomas
Edited by: tdombrow10 on Jun 7, 2009 10:04 PM

unfortuantely(i beleive i had the same problem)
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i hope i helped....
http://greekoraclebi.blogspot.com/
///////////////////////////////////////

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My Blog: http://www.inside-oracle-apex.com
APEX Plug-Ins: http://apex.oracle.com/plugins
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Hi all,
I have this situation:
a tabular form with two "select list (query based LOV)" fields.
The first one must affect elements in the second one. And so the second query based LOV field should has a "where attr1 = first_list_selected_value" in the query.
Is this possible ? Could you show me some advices ?
thanks in advance.

OK, thank you.
But maybe I wasn't too clear.
I need cascading LOV for each row of my tabular form.
I have a EMP tabular form
select
"ROWID",
"EMPNO",
"ENAME",
"JOB",
"MGR",
"HIREDATE",
"SAL",
"COMM",
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Select List (based on LOV) query problem

Hello experts! I have a small problem here, which I can't seem to overcome.
I have a page item (select list based on LOV), which is based on a query. The query returns all potential employees of a department that are responsible for a certain duty. So far so good!
The problem is that there are two departments, which should not only see there own employees but also the name of the employee that has carried out a certain task. However, due to my query, the name of that person is not displayed - only the pk is returned.
Do you have a recommendation how I display all employees of a specific department and have additional values translated as well?
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Okay, I just had the right idea and it's working well! Sorry for posting!
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OnChanger="get_ajax_select_xml(this);" with select list (query named LOV)

Hello,
i used Vikas'example Re: cascading lov for tabular form
i have a problem with Select list (query based LOV)
when run tabular form i have the following error:
report error:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
the number of rows of the Lov are 900
the display variable is 70 char
is there any limit?
Thank in advance
Costanti

Leo,
Thanks for the response, but I don't think you quite understand my problem. If I go to the Column Attributes screen for the group_id field, I have the "Display As" drop down set to "Select List (query based LOV)", not "Select List (named LOV)". This requires that the sql query be written in the "List of values definition" text area below. Within that text area I have the following query:
SELECT DISPLAY_NAME, GROUP_ID
FROM APPLICATION_GROUPS
WHERE APP_ID = ?????
ORDER BY 1
The APP_ID that I need to reference is for the current row of data that is being processed. Therefore, I can't use a :PNNN_APP_ID variable, because that field does not exist on the page.
Hopefully this explains it a little better.
Thanks,
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Hi,
I am trying to do 2 reports (REPORT1 and REPORT2).
The first is a summary report (REPORT1).
This report will display sales figures for the year. Now, I need to have a select list in the result set that will have 2 options, depending on which option is chosen, I want to call REPORT2 with the select list as a parameter. How can I do this ?
Let me try to explain what I did.
I created REPORT1 on Page 100
SELECT YEAR, sum(YTD_SALES), APEX_ITEM.SELECT_LIST(1,'DEPARTMENT','Department;DEPARTMENT,Division;DIVISION') Drilldown FROM SALES_ANALYSIS WHERE YEAR > 2000
GROUP BY YEAR ORDER BY YEAR
I created 2 hidden items namely P100_YEAR and P100_DRILLDOWN
I also made the column YEAR as a link and specified both P100_YEAR and P100_DRILLDOWN as parameters to be passed.
Next, I created REPORT2
SELECT YEAR, DECODE(:P100_DRILLDOWN, 'Department', department, 'Division', Division) dept_div, sum(YTD_SALES) ytd_sales
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WHERE YEAR = :P100_YEAR
When I run Report 1, it's fine, when I choose either Department or Division from the Select List and click on the link to call Report 2, report 2 is displayed, but the value being passed for P100_DRILLDOWN is not correct and as a result, I am unable to get correct results for Report 2
Am I missing something ? Are there any alternate ways to do what I'm doing ?
Thanks,
Ashok

Hi Ashok,
The link definition will not know the value selected in the list as it is constructed only when the page is being rendered. You would need to create some javascript to handle this. I've done that here: [http://apex.oracle.com/pls/otn/f?p=267:182]
The link on the EMPNO column has been defined in the HTML Expression setting for the column instead of the Link section. The HTML Expression that I have used is:
<a href="#" onclick="javascript:doDrilldown('#EMPNO#',this);">#EMPNO#</a>And, in the page's HTML Header setting, I have added in:
<script type="text/javascript">
function doDrilldown(empno,group)
var g;
var p = group.parentNode;
while (p.tagName != "TR")
p = p.parentNode;
var x = p.getElementsByTagName("SELECT");
if (x.length > 0)
g = x[0].value;
var url = "f?p=&APP_ID.:183:&SESSION.::::P183_EMPNO,P183_GROUP:" + empno + "," + g;
document.location.href = url;
</script>When a link is clicked, the doDrilldown function is called passing in the EMPNO value and the "this" object (which identifies the object triggering the call). The function starts from that object and goes up in the HTML tag tree to the nearest TR tag (the row tag that the link is on) and then finds the first SELECT list item on the row and gets its value. It then constructs a URL using this and the EMPNO value and performs a redirect to the second page (page 183 in this example).
Andy

Select List (query based LOV) in a wizard created report form

I have created an updatable report form with 3 columns:
app_id
user_id
group_id
Each app_id has multiple group_id's associated with it, and I want to show the group_id field as a Select List (query based LOV) that contains the groups associated with the app_id.
My query for the select list needs to be similar to the following:
SELECT DISPLAY_NAME, GROUP_ID
FROM APPLICATION_GROUPS
WHERE APP_ID = ?????
ORDER BY 1
The problem is, I don't know how to reference the app_id from the main report to replace the ?????.
In other words, if my report returns 2 rows of data like this:
app_id----------user_id----------group_id
1-----------------24------------------3
2-----------------24------------------15
Then how do I get the group_id column to be a select list of possible groups for each application? If app_id 1 has 3 groups associated with it, 3, 4, & 5 and app_id 2 has 2 groups associated with it, 15 & 16, then those each of the select lists should be based on the app_id.
Hopefully I explained this clearly.
Thanks,
Kris

Leo,
Thanks for the response, but I don't think you quite understand my problem. If I go to the Column Attributes screen for the group_id field, I have the "Display As" drop down set to "Select List (query based LOV)", not "Select List (named LOV)". This requires that the sql query be written in the "List of values definition" text area below. Within that text area I have the following query:
SELECT DISPLAY_NAME, GROUP_ID
FROM APPLICATION_GROUPS
WHERE APP_ID = ?????
ORDER BY 1
The APP_ID that I need to reference is for the current row of data that is being processed. Therefore, I can't use a :PNNN_APP_ID variable, because that field does not exist on the page.
Hopefully this explains it a little better.
Thanks,
Kris

Character string buffer too small (select list query based LOV)

Hi,
Using the select list query based LOV with a select witch is too big, you get this error.
report error:
ORA-20001: Error fetching column value: ORA-06502: PL/SQL: numeric or value error: character string buffer too small
When using the Popup LOV query based LOV) then it works nice.
Can that be solved somehow?
With the Popup LOV the return value is displayed in stead of the description.

Hi Andy,
How do I incorporate your suggestion on a report ?
Example : I have
select apex_item.display_and_save(1,column1,5) col1,
apex_item.display_and_save(2,column2,5) col2 ,
apex_item.popup_from_query(3, emp_name, 'select user_name, name empname from table2) col3
Table 2 is a long list , and I'm getting string buffer too small due to this.
Your suggestion with HTP is good but I'm not sure how to implement it for reports as I'll like the user to change the values with the select_list.
I'm not using forms as they want mulit-record on the same page.
Hope to hear back from you soon.
Thanks very much.

Problems with customizing select lists and popup LOVs

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