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26 June 2015

K2 SmartForms and Cascading Dropdowns

K2 SmartForms and Cascading Dropdowns

As we’ve seen before, K2 SmartForms gives the developer a range of options when it comes to displaying & filtering data. Another good example of this is when your design calls for cascading dropdowns.

K2 SmartForms and Cascading Dropdowns K2 SmartForms Cascading Dropdowns – 1

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There are two possible approaches – one for dropdowns situated in the same view and another for dropdowns that are on different views.

K2 SmartForms Cascading Dropdowns - 2 K2 SmartForms Dropdowns – 2

For dropdowns situated on different views (on a single form), you simply add a form level rule on the parent dropdown box’s “On Change” event.

K2 SmartForms Cascading Dropdowns - 3 K2 SmartForms Dropdowns – 3

In the configuration of this rule you drag the parent dropdown control from the context browser into the corresponding filter property on your mapping destination input. By doing this the selected item’s value in the dropdown box will be passed as an input parameter, effectively filtering the child dropdown’s data.

K2 SmartForms Cascading Dropdowns - 4 K2 SmartForms Cascading Dropdowns – 4

For cascading dropdown boxes situated on the same view you can simply set up the filter on the Data Source configuration.

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