add_dataframe() function not designed to handle Shiny's reactive dataframe objects?

[Pranay Panta]

Hi Inaki, 

First of all thanks for such a great package, it has been immensly useful in the work that I do. 

I am currenty building a Shiny app with an integrated simmer model. I need to be able to add a functionality in the app where the user can upload a dataframe that acts as a preloaded queue. Within the shiny framework, the uploaded data becomes a reactive dataframe. It seems add_dataframe is unable to handle Shiny reactive dataframe objects. Or am I doing something wrong? 

I have been getting the desired results when I feed a locally saved dataframe into 'add_dataframe' but I have been getting an error message when I feed the same data through as a reactive dataframe uploaded within the app. 

For example,

 add_dataframe("Level A", trajectory1,finaldata,  col_time= "time", col_priority="priority", time = "absolute", col_attributes = c("service"))  ###This is okay 

add_dataframe("Level A", trajectory1,finaldata(),  col_time= "time", col_priority="priority", time = "absolute", col_attributes = c("service"))  ### This is not okay where finaldata() is a reactive dataframe. 

Am I doing something wrong? or is add_dataframe unable to handle Shiny reactive dataframe objects? 

It might make sense for me to go through the old ways  of add_generator to add a pre-loaded queue. It seems there are no issues to pass on reactive objects through other functions within Simmer. For example I can add finaldata()$variable as a valid object in other functions within simmer. 

I came across one of your previous responses in another thread attached below that discussed about pre-loading a queue via add_generator

https://stackoverflow.com/questions/44865924/using-simmer-to-build-a-specific-model

It seems the codes you provide in that thread for adding a dataframe through the add_generator route does not work? Can you please help me with that or am I making some silly mistake?

Have a nice day. 

Thanks,
Pranay 

[Iñaki Ucar]

A dataframe that results from a reactive is just a dataframe, there should be no issue as long as it is properly constructed. What issue are you experiencing? Is there a minimal reproducible example that we could examine?

Iñaki

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Iñaki Úcar

[Pranay Panta]

Hi  Iñaki,

Yes, it works for me now and there are no issues.

I accidentally called add_dataframe before the data was ready. Your answer helped me be more patient and look closer.

Thank you once again for such a great package and for supporting the community as well. 

Thanks,
Pranay