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Function in Logo field [message #623639]

Fri, 12 September 2014 04:54

Xandot
Messages: 235
Registered: January 2014
Location: India

Senior Member

Hello,

Can i use function in logo field if yes then what is the format?

Thanks,
Xandot

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Re: Function in Logo field [message #623724 is a reply to message #623639]

Sat, 13 September 2014 04:37

Littlefoot
Messages: 21761
Registered: June 2005
Location: Croatia, Europe

Senior Member
Account Moderator

I don't think that you can use a function there; Apex expects image name (with a path to it), not a function.

However, have a look at Tom's answer here.

As I had to change logo depending on user's department, here's what I did: I created a region (position 07) located on Page 0. That region contains a single item (I named it "P0_LOGO"):
- Display as: Display image
- Based on: Image URL stored in Page Item Value
- Source used: Always, replacing any existing value in session state
- Source type: PL/SQL function body
- Source value or expression: return f_logo;

F_LOGO is a function that returns image name. Here's how I do it:

   FUNCTION f_logo
      RETURN VARCHAR2
   IS
      retval   VARCHAR2 (100);
   BEGIN
      SELECT pkg_general.c_worksp_img || c.logo
        INTO retval
        FROM context_setup c
       WHERE c.dept = f_operater_dept (v ('APP_USER'));

      RETURN (retval);
  END f_logo;

PKG_GENERAL's constant

c_worksp_img                  constant varchar2(200) := v('WORKSPACE_IMAGES');

CONTEXT_SETUP table contains one record per department; its C_LOGO column contains image name for each department, such as

context_setup.c_logo = 'DEPT_1.JPG'

Function F_OPERATER_DEPT returns user's department (so that I'd know which image to select).

The function returns

SQL> select f_logo from dual;

F_LOGO
--------------------------------------------------------------------------------
wwv_flow_file_mgr.get_file?p_security_group_id=0&p_fname=DEPT_1.JPG

SQL>

The final result: an appropriate logo image is displayed on the screen.

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Re: Function in Logo field [message #623834 is a reply to message #623724]

Mon, 15 September 2014 05:10

Xandot
Messages: 235
Registered: January 2014
Location: India

Senior Member

Thanks Littlefoot for sharing information.

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