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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,101 @@ | ||
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| # ui -------------------------------------------------------------------------- | ||
| calculate_cols_ui <- function(id) { | ||
| ns <- NS(id) | ||
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| card( | ||
| card_header('Apply Function', class = 'mini-header'), | ||
| card_body( | ||
| uiOutput(ns('ui_var_sel')), | ||
| textInput(ns('txt_new_name'), 'New name'), | ||
| uiOutput(ns('ui_fun_sel')) | ||
| ), | ||
| card_footer(btn_task( | ||
| ns('btn_apply_fun'), 'Apply', icon('check') | ||
| )) | ||
| ) | ||
| } | ||
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| # server ---------------------------------------------------------------------- | ||
| calculate_cols_server <- function(id, input_df) { | ||
| moduleServer(id, function(input, output, session) { | ||
| ns <- NS(id) | ||
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| # Reactive to get column names | ||
| df_names <- reactive(input_df() |> names()) | ||
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| df <- reactiveValues() | ||
| observe({ | ||
| df$df_active <- input_df() | ||
| }) | ||
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| # render variables to sel ------------------------------------------------- | ||
| output$ui_var_sel <- renderUI({ | ||
| selectInput(ns('vars_sel'), 'Variable', c('', df_names())) | ||
| }) | ||
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| # suggest name for new variable ------------------------------------------- | ||
| observe({ | ||
| req(input$vars_sel) | ||
| updateTextInput(session, 'txt_new_name', | ||
| value = paste0(input$vars_sel, '_new')) | ||
| }) |> bindEvent(input$vars_sel) | ||
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| # render functions choices ------------------------------------------------ | ||
| selected_var_type <- reactive({ | ||
| req(input$vars_sel) | ||
| obj_type(df$df_active[[input$vars_sel]]) | ||
| }) | ||
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| output$ui_fun_sel <- renderUI({ | ||
| req(input$vars_sel) | ||
| if (selected_var_type() == 'numeric') { | ||
| selectInput(ns('fun'), 'Choose a function', choices = math_funs) | ||
| } else if (selected_var_type() == 'char'){ | ||
| selectInput(ns('fun'), 'Choose a function', choices = char_funs) | ||
| } else if (selected_var_type() == 'date'){ | ||
| selectInput(ns('fun'), 'Choose a function', choices = date_funs) | ||
| } else if (selected_var_type() == 'logical'){ | ||
| selectInput(ns('fun'), 'Choose a function', choices = logical_funs) | ||
| } else if (selected_var_type() == 'factor'){ | ||
| selectInput(ns('fun'), 'Choose a function', choices = factor_funs) | ||
| } else if (selected_var_type() == 'complex'){ | ||
| selectInput(ns('fun'), 'Choose a function', choices = complex_funs) | ||
| } else { | ||
| selectInput(ns('fun'), 'Choose a function', choices = character(0)) | ||
| } | ||
| }) | ||
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| observe({ | ||
| req(input$vars_sel, input$txt_new_name, df$df_active, input$fun) | ||
| if (input$vars_sel |> length() == 0) { | ||
| msg('Select at least one variable') | ||
| } else { | ||
| if (is_valid_name(input$txt_new_name) && | ||
| input$txt_new_name %notin% df_names()) { | ||
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| temp <- copy(df$df_active) | ||
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| temp[, new_var := fun(var1), env = list( | ||
| new_var = input$txt_new_name, | ||
| fun = input$fun, | ||
| var1 = input$vars_sel | ||
| )] | ||
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| df$df_active <- copy(temp) | ||
| rm(temp) | ||
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| msg('Apply function: OK') | ||
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| } else { | ||
| msg_error('New name is not valid or already in use') | ||
| } | ||
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| } | ||
| }) |> bindEvent(input$btn_apply_fun) | ||
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| return(list(df_calculate_cols = reactive(df$df_active))) | ||
| }) | ||
| } |
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