Hi Greg,
The tool form supports multiple dynamic fields which depend on each other.
You may want to take a look at this:
https://trello.com/c/NOmjJxCi/428-305-potential-bug-in-dynamic-options-filters
.
Hope this helps,
Sam
On Fri, Sep 18, 2015 at 8:30 AM, Greg Von Kuster <g...@bx.psu.edu> wrote:
> Hello all,
>
> I’m working on adding support to the Galaxy framework for datatypes in the
> constructive solid geometry (CSG) space and I have several working Galaxy
> tools and a visualization plugin that deal with 3d shapes in this
> environment. All of this work will soon be contributed to open source.
>
> For one of the tools, I need to provide 2 select lists on the tool form
> that are associated in such a way that when an option in select list 1 is
> chosen, the options in select list 2 are altered and re-rendered. This
> behavior would probably use a combination of dynamic options and
> refresh_on_change between the 2 associated select lists.
>
> I’ve not seen a tool that does this precisely, so I’m hoping that if it is
> currently possible to do this within Galaxy tools, someone will point me to
> an example.
>
> If it is not currently possible, I will contribute a PR for supporting it,
> but would like some input as to how it should be done.
>
> Dynamic options are currently rendered using 4 approaches; from_file,
> from_dataset, from_parameter and from_data_table. One or more of several
> filters can then be applied to the options to alter them if desired.
>
> Since these CSG tools involve new datatypes, I have flexibility into how
> the metadata elements are set up that are needed to render these 2 select
> lists. A dictionary may work where the metadata element contents look like
> this:
>
> {a: [‘1’, ‘2’], b: [‘3’, ‘4’] }
>
> The options in select list 1 would be ‘a’ and ‘b’. When ‘a’ is selected,
> select list 2 would have options ‘1’ and ‘2’, and when ‘b’ is selected,
> select list 2 would have options ‘3’ and ‘4’.
>
> To support this approach, perhaps dynamic options could be enhanced to
> include a from_dict option. There would be some complxity involved in
> associating the lists using refresh_on_change so that select list 2 is
> refreshed with the correct options when select list one is changed. I
> haven’t yet worked out these details.
>
> Also, using a dictionary will not keep order for the options, so perhaps a
> list of tuples would be better?
>
> [ [ ‘a’, [‘1’, ‘2’]], [‘b’, [‘3’, ‘4’]]]
>
> Can someone let me know if this is currently possible, and if so, an
> example tool that does it? If it’s not possible, does the above approach
> seem reasonable, or is there a better way?
>
> Thanks very much,
>
> Greg Von Kuster
>
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