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iModernize - The Profound Logic Software Blog

Profound Pro Tips: Dynamic Select Box Based on Entered Data

Posted by Tim Losee on Dec 20, 2017 3:13:34 PM

Profound Pro Tips is a blog series that is focused on reoccurring customer issues that our support team receives and aims to answer questions our Profound Logic customers might have before they even have them! Don't see your question/concern in Profound Pro Tips? Please feel free to contact our team or leave us a comment below.

This week we are discussing how you can dynamically adjust the results of a select box, based upon other values entered on the screen.

Our support team is often asked if it's possible to adjust the contents of a dynamic select box, which makes it a great subject for Profound Pro Tips!

To demonstrate the answer to this question, we've created an example below.  Here, we're using a series of dynamic select boxes that adjust based on values that are entered into previous select boxes, but the same principals apply to any of our widgets. 

In this example, we have 3 select boxes labeled State, County, and City where each box dynamically adjusts its contents based upon the values of the previous box and pulls their content from a table called CITIES.

Dynamic Selection 1.png

 In the 'onchange' event of the State select box, you can change the value of the 'choices parameter value' properties of the County and City select boxes. Use the applyProperty() API to set properties with the value of the State select box. The City select box has 2 'choices parameter value' because it requires the value of both the State and the County select box.

Pasted image at 2017_12_19 05_02 PM.png

Click here to view full-size image

Note: Once you apply the choices parameter value' properties, you will then reapply the 'filed type' property. Reapplying the field type property in this manner forces the select boxes to be re-rendered so that they reflect the new change that you apply. 

Next, apply the second 'choices parameter value' to the City select box in the County's 'onchange' event.

Pasted image at 2017_12_20 08_50 AM.png

Click here to view full-size image

Finally, you will have the City select box that does not have an 'onchange' nor any default values for the 'choices parameter value', but does have two '?' to accept the two properties applied in the previous select boxes.

Pasted image at 2017_12_20 08_54 AM.png

When it is all said and done, your dynamic select boxes should look something like this:

Pasted image at 2017_12_20 08_59 AM.png

Note: Profound UI will accept values from the client for any parameter marker values which are not bound to program fields.

If you still need help, visit our Product Documentation on the applyProperty() API or parameter markers.

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Topics: RPG Development, Application modernization, IBM i applications, Node.js, Profound.js, IBM i, RPG, AS400 modernization, IBM i Modernization, Agile modernization, iSeries, Legacy Modernization, Profound UI, AS 400, AS_400, Profound Logic

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