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QUESTION
I have a server application that loads several script files (for processing specific dataset-fields) at startup. the scripts should be parsed and the "expression"-data of the script should be stored in a map (by column name) so that they can be accessed and executed from there later.
There are two types of scripts. The "simple" ones just contain a process
function, the complex ones currently have a structure similar to the example below (might have more private functions/fields):
ANSWER
Answered 2021-Jun-10 at 12:32It's either functions are declared in the top level namespace, and then name collisions are a problem, or they are in their custom scopes and then you have to have some way to access and call them.
When you're evaluating a source like that:
QUESTION
I can't get my program to get every string possible from a split.
Here is one thing I tried:
...ANSWER
Answered 2021-Apr-21 at 22:44It seems to work for me replacing the for
statement with this one:
QUESTION
I have the shiny app below in which the user lands on the Upload data
panel. I want the user not to be able to move to any of the other 2 tabpanels
if he has not uploaded both files that are needed in the Upload data
tab. The thing here is that I want both tabs to be activated only if the csv names are specific. For example the csv imported in first or second fileInput()
should be named csvone
and the csv imported in the first or second fileInput() should be named csvtwo
. But both files should be uploaded regardless of which will be 1st.
ANSWER
Answered 2021-Mar-31 at 22:01just wrap the enable commands in an if/else statement like so
BTW: what you are (should be) asking essentially is "how can I get the filename of a file uploaded with a shiny fileInput
?"
QUESTION
I want to run JS in server (instead of UI). I know I can do this via shinyjs package using runjs function but I want to know how can I do this via native shiny package. I tried via session$sendCustomMessage()
and Shiny.addCustomMessageHandler( )
but it does not work.
My Attempt
...ANSWER
Answered 2021-Mar-17 at 19:08You are just passing the jscode value as a string to your javascript message handler. You can only pass strings or objects, not executable code. Therefore, in order to actually run the code, you need to eval()
the string. This should work
QUESTION
I am adding some jscode to worpress. What I am trying to do is to uncheck all and only the checkbox contained on addon.product-addon-grand-accompagnement class when an attribute is selected. I have tried:
...ANSWER
Answered 2021-Mar-02 at 19:19If you use the class name to uncheck, it will uncheck all classes with that same class name. You have to use a unique ID to uncheck a specific checkbox.
Add an id value to each input tag.
QUESTION
I am trying to set focus to a textInput
in a modalDialog
in shiny. I am using shinyjs
. Following guidance from the shinyjs
documentation I came up with the following code which does not do what I expect:
ANSWER
Answered 2021-Mar-01 at 13:06Your problem is that the moment your js$refocus
is called, the modal
is not yet set up. If you open the console in the development tools, you will see that there is an error raised.
The better option would be to register an event listener, which fires as soon as the modal is shown. Looking into the docs of modal you can see, that there is a shown.bs.modal
event, which is triggered when the modal is loaded.
The event is triggered at the .modal
element, which is not existing, but thanks to event bubbling we can listen to this very event at, say, and you can react there.
Enough theory, here's the code (no need for shinyjs
):
QUESTION
I'm trying to observe changes to css using javascript mutationObserver in Shiny. I'm using rhandsontable
because we can change the width of a table element in the app, and I'm trying to pick up this change iwth the mutationObserver.
The javascript doesn't seem to be working. I'm unsure why. Nothing is logged to the console, no alert message, and shiny doesn't register the variable being set by javascript.
MutationObserver code
...ANSWER
Answered 2021-Jan-08 at 19:57This works:
QUESTION
Using @YBS suggestion to put, "bs_carousel(...) inside a renderUI" Here is my attempt. The slides render and autoplay is off at first. However, click the right chevron and autoplay begins.
...ANSWER
Answered 2020-Dec-27 at 04:20Somehow the autoplay does not stop in bs_carousel()
, unless mouse pointer is hovering over the active slide. However, the code below demonstrates that autoplay can be switched off in carousel()
from shinydashboardPlus
package.
QUESTION
I have problems about Material UI table. I searched Material UI table document which is https://material-ui.com/components/tables/. I wanna know how to apply pagenation with my Jscode "CheckListComponent.js" like "Custom pagination actions" in that documents. I just changed createData which is in that document to my Jsondata. Now I'm confusing this Error
...ANSWER
Answered 2020-Dec-22 at 03:53welcome sy-torii. you need remove the row
variable outside from your function. instead, include at your CustomPaginationActionsTable
a row state. then use useEffect
to fetch your rows on component mount.
QUESTION
I have a question, I'm working on an website like CodePen, Trinket where you can write your code and save it afterwards I'm basically done, but i dont know how to code an system that saves the "file" here some code:
...ANSWER
Answered 2020-Dec-13 at 16:53If you want to generate a file on the client side, well you can do this
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