Dynamically show/hide columns in the reports of the IR
Env
RDBMS: Oracle XE 11.2
Request Express 4.2.4.00.08
Hi all
I am bulding an open source oracle apex app to track aircraft using ADS - B technology.
I have somes types of units. for example (kilometers, miles, knots, feet and metres).
So, in the report of the IR, I want pick capable of showing a unit in time.
For example
Radio Group.
Ground speed: (*) km/h () Mhp (Knt)
Vertical speed: (*) ft/s (m/s)
Can anyone help to build a code or point a direction to get above result?
I tried already a thread, but did not work.
Apex: Display/hide report column with Radio button. 2 cents to Oracle by Christoph
Display / hide column IR dynamically
I have a limited knowledge of Oracle APEX.
Levi Pereira says:
I am bulding an open source oracle apex app to track aircraft using ADS - B technology.
I have somes types of units. for example (kilometers, miles, knots, feet and metres).
So, in the report of the IR, I want pick capable of showing a unit in time.
For example
Group of radio buttons.
Ground speed: (*) km/h () Mhp (Knt)
Vertical speed: (*) ft/s (m/s)
There are different ways to do this. Probably the easiest would be:
- Create lists of values (LOVs) for units.
- Add the elements of the Group of radio -based unity LOVs report interactive region (IR), by specifying one of the units as a default value.
- Present the radio group via the Items property of the Page to send IR region.
- Create multi-column report for each metric combination / unit.
- Control the display of the report columns (applies to IR, but also classic report columns) conditionally using value of element in the Expression 1 = Expression 2 conditions Expression 1 is the group element of relevant radio and Expression 2 unit LOV value corresponding to that used in the column of the report.
- Add a dynamic action on the evolution of the components of the radio to refresh the IR region.
A less obvious approach would also use LOVs, group radio elements and dynamic action of change/update as above, but only have one column for each measure in the report. The column value is calculated using an expression based on the value of the radio group, for example:
. . . /* Assuming base speed unit is km/h */ ground_speed * case :p1_ground_speed_unit when 'mph' then 0.621371 when 'kn' then 0.539957 else 1 end ground_speed . . .
The unit could be indicated in the column heading in the report referring to the element of the device by using a substitution of static text string:Ground Speed (&P1_GROUND_SPEED_UNIT.)
Tags: Database
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