Making runcode work inside Shiny modules

[mjhelf]

Hi @daattali ,
these are the changes as discussed in #184 ...

The id argument is used in an unusual way here (because the enclosing module UI needs to be passed, instead of creating an identifier for a UI element), so maybe the argument name should be changed to something else to make that clearer?

Let me know if this needs more testing or adjustments,

Best,
Max

Here is a minimal example, I wasn't sure whether it should be included in the documentation:

library(shiny)
library(shinyjs)
  
  ModuleEx <- function(input,output, session){
    runcodeServer()
  }
  
  ModuleExUI <- function(id){
    runcodeUI(id = id)
  }
  
  shinyApp(
    ui = fluidPage(
      useShinyjs(),  # Set up shinyjs
      ModuleExUI("Mod1")
    ),
    server = function(input, output) {
      callModule(ModuleEx, "Mod1")
    }
  )

And here is a more involved example that tests out the new possibilities:

• calling runcode multiple times with different input types, inside and outside modules
• accessing a reactive that is local to the module scope

library(shiny)
library(shinyjs)

  ModuleX <- function(input,output, session, 
                      aValue = reactive({})){
    runcodeServer()
    
  }
  
  ModuleXUI <- function(id, rcType = "text"){
    
    runcodeUI(code = "shinyjs::alert(aValue())",
              type = rcType,
              id = id)
    
    }
  
  
  shinyApp(
    ui = fluidPage(
      useShinyjs(),  # Set up shinyjs
      runcodeUI(code = "shinyjs::alert('Hello!')"),
      ModuleXUI("Mod1"),
      ModuleXUI("Mod2", rcType = "textarea"),
      ModuleXUI("Mod3", rcType = "ace")
      
      
    ),
    server = function(input, output) {
      runcodeServer()
      callModule(ModuleX, "Mod1", aValue = reactive({"This is Module#1"}))
      callModule(ModuleX, "Mod2", aValue = reactive({"This is Module#2"}))
      callModule(ModuleX, "Mod3", aValue = reactive({"This is Module#3"}))
      
    }
  )

[daattali]

Looks good.

The span tag with id "runcode_errorMsg" also needs to be namespaced. The documentation should be capitalized and a bit more concise: "When used inside a shiny module, the module's id needs to be provided to \code{runcodeUI}. This argument should remain \code{NULL} when not used inside a module."

Also please bump the version in the DESCRIPTION , and add an item to the NEWS file

[mjhelf]

Hi @daattali,
thanks for the feedback and sorry for the late response! I made changes according to your comments. Let me know if this is ok, thank you!

[daattali]

Looks great, thanks!