utility for server/ui to check value of a global default setting or user-defined setting This and get_golem_options() are very similar tools, useful in server and ui

Usage

global_or_param(vname)

Arguments

vname: a global default or user param - do a global find in files of source code for this function to see how / where it is used.

Value

value of the param, or NULL if not found

Details

See help for get_global_defaults_or_user_options()

global_or_param() is used a lot in server and also ui (while sometimes golem::get_golem_options() had been used instead but now is not, for the same purpose). It is used generally in ui to set default values for params that are set in the global_defaults_ files and often can be modified in the advanced tab. To provide alternative values as params passed to run_app() you would have to understand the options by seeing what they are defaulted to in the files and how they are used as parameters in ui or server. See ?run_app()

This is much like golem::get_golem_options() but global_or_param() is more flexible/robust since it will, if vname is not already defined as found by golem::get_golem_options() then as a backup, check if the param called vname is defined in the search path such as in the calling or global envt already somehow, and return that value if it exists. But if it is not in golem options and not found in search path, this returns NULL