MarkdownIntakeProcess/ShinyAceMarkdown.R at master · kdgosik/MarkdownIntakeProcess · GitHub

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library(shiny)
library(shinyAce)
library(shinydashboard)
library(knitr)

shinyApp(

shinyUI(

  bootstrapPage(

    fluidRow(

      column(width = 6,

             box(width = 12,

              h2("Source R-Markdown"),
              aceEditor("rmd", mode = "markdown",
                              value = '### Sample knitr Doc

This is some markdown text. It may also have embedded R code
which will be executed.

```{r}
2*3
rnorm(5)
```

It can even include graphical elements.

``{r}
hist(rnorm(100))
```

'),

              actionButton("eval", "Update")

              ) # box

              ), # column

      column(width = 6,

             box(width = 12,

              h2("Knitted Output"),
              htmlOutput("knitDoc")

             ) # box
          ) # column
      ) # fluidRow
  ) # bootsrapPage
),


shinyServer(function(input, output, session) {

  output$knitDoc <- renderUI({

    input$eval

    return(
      isolate(
        HTML(
          knit2html(text = input$rmd, fragment.only = TRUE, quiet = TRUE)
          )
        )
      )

  })

})

)