Add query parameters on filter

[juliardi]

Hello, I have a tree-like data like this :

• folderA
  • childA1
    • childA1X
    • childA1Y
    • childA1Z
  • childA2
  • childA3
• folderB
  • childB1
  • childB2
    • childB2X
    • childB2Y
    • childB2Z
  • childB3

These tree data is loaded on a list screen based on the value of query parameter 'prefix'.
For example, if prefix=folderA, the list screen will only display :

• childA1
• childA2
• childA3

And if prefix=folderB/childB2, it will display :

• childB2X
• childB2Y
• childB2Z

etc.

Now, if I use the filter feature while prefix is not empty, it will load a new URL with filter parameter without including the prefix parameter. How do I include the prefix parameter when filtering?

Originally posted by @juliardi in #2819