Button Rendering DT in loops

[AndrewSkelton]

This looks to be a bug from my perspective, or maybe not a complete workaround... When rendering DTs in a loop, the buttons expected don't appear to render. Any advice on the approach? Solution implemented from #67

---
title: "Test"
date: "`r format(Sys.time(), '%B %d %Y')`"
output: 
   html_document:
      fig_height: 6
      fig_width: 10
      keep_md: yes
      number_sections: no
      self_contained: yes
      theme: cerulean
      toc: yes
      toc_float: yes
---

```{r set_env, echo=FALSE,include = FALSE}
##
## Load Libraries
##
library(tidyverse)
library(knitr)
##


##
## Knitr Options
##
opts_chunk$set(
   include=TRUE,warning=FALSE, echo=FALSE, 
   message=FALSE,concordance=TRUE,cache=FALSE
)
DT::datatable(matrix())
##
```

# Table Printing Test {.tabset .tabset-pills}
test to see if this works

```{r tables, results='asis'}
##
## Print Tables
##
for(i in 1:5) {
   cat(paste0('## table_',i,' \n'))
   cat(knitr::knit_print({
      mtcars[,c(1:4)] %>%
      DT::datatable(rownames=F, extensions="Buttons", 
                options = list(
                       dom = "Bfrtip", 
                       buttons = list("copy",list(
                          extend  = 'collection',
                          buttons = c('csv', 'excel', 'pdf'),
                          text    = 'Download'
                       ))
                    ))
   }))
   cat('\n \n')
}
##
```

> xfun::session_info('DT')
R version 4.0.2 (2020-06-22)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04 LTS, RStudio 1.3.1056

Locale:
  LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8     LC_MONETARY=en_US.UTF-8    LC_MESSAGES=C             
  LC_PAPER=en_US.UTF-8       LC_NAME=C                  LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

Package version:
  base64enc_0.1.3   BH_1.72.0.3       crosstalk_1.1.0.1 digest_0.6.25     DT_0.15           graphics_4.0.2    grDevices_4.0.2   htmltools_0.5.0   htmlwidgets_1.5.1
  jsonlite_1.7.0    later_1.1.0.1     lazyeval_0.2.2    magrittr_1.5      methods_4.0.2     promises_1.1.1    R6_2.4.1          Rcpp_1.0.5        rlang_0.4.7      
  stats_4.0.2       utils_4.0.2       yaml_2.2.1       

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[shrektan]

I think there should be a better & direct way for this but I don't have time to investigate at the present.

The simple solution is to replace this line:

DT::datatable(matrix())

with below (extensions and plugins needs additional resources):

DT::datatable(
  matrix(), extensions="Buttons"
)

[aliazander]

@AndrewSkelton did you ever find a working solution for this? I am still not seeing the buttons in the html output.

[shrektan]

As I've answered above, put the following code in advance should resolve your issue.

DT::datatable(
  matrix(), extensions="Buttons"
)