Nothing
R/mod_create_table.R
In rsqliteadmin: A GUI to Manage SQLite Databases
Defines functions
mod_create_table_server
mod_create_table_ui
#' create_table UI Function
#'
#' @description A shiny Module.
#'
#' @param id,input,output,session Internal parameters for {shiny}.
#'
#' @noRd
#'
#' @importFrom DT DTOutput
#' @importFrom DT renderDT
#' @importFrom DT datatable
#' @importFrom RSQLite dbExecute
mod_create_table_ui <- function(id) {
ns <- NS(id)
tabPanel(title = "Create Tables",
column(
width = 12,
fluidRow(column(width = 12, h2(
"Create a New Table"
))),
fluidRow(column(
width = 12, textInput(
inputId = ns("new_table_name"),
label = p("Enter New Table Name")
)
)),
fluidRow(column(
width = 12, conditionalPanel(
condition = paste0("input['", ns("new_table_name"), "'] != ''"),
column(
width = 12,
fluidRow(DT::DTOutput(ns(
"display_new_table"
))),
fluidRow(
actionButton(inputId = ns("add_column"),
label = "Add a New Column"),
actionButton(inputId = ns("remove_columns"),
label = "Remove Selected Columns"),
actionButton(inputId = ns("reset_columns"),
label = "Reset Columns"),
actionButton(inputId = ns("create_new_table"),
label = "Create New Table")
)
)
)
)),
br()
))
}
#' create_table Server Function
#'
#' @noRd
mod_create_table_server <- function(input, output, session, conn) {
ns <- session$ns
# info$new_table_columns - information about the columns user is adding along with the corresponding
# column details query in the first column.
info <- reactiveValues(
new_table_columns = data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
)
# action_create_table$created_table - reactive value to notify other modules of creating a table.
action_create_table <- reactiveValues(created_table = NULL)
output$display_new_table <-
DT::renderDT(expr = {
DT::datatable(
data = info$new_table_columns[, c(-1)],
rownames = FALSE,
selection = "multiple"
)
})
# Displaying the new table structure inside the modal dialog box.
output$display_new_table_modal <-
DT::renderDT(expr = {
DT::datatable(
data = info$new_table_columns[, c(-1,-4:-10)],
rownames = FALSE,
selection = "multiple"
)
})
# Reference for how to write conditions for conditional panels here:
# https://github.com/rstudio/shiny/issues/1586
observeEvent(input$add_column, {
showModal(modalDialog(
size = "l",
title = "Add New Columns",
column(
width = 12,
fluidRow(
column(width = 6,
textInput(
inputId = ns("column_name"), label = "Column Name"
)),
column(
width = 6,
selectInput(
inputId = ns("data_type"),
label = "Data Type",
choices = c(
"BIGINT",
"BLOB",
"BOOLEAN",
"CHAR",
"DATE",
"DATETIME",
"DECIMAL",
"DOUBLE",
"INTEGER",
"INT",
"NONE",
"NUMERIC",
"REAL",
"STRING",
"TEXT",
"TIME",
"VARCHAR"
)
)
)
),
fluidRow(
column(width = 3, checkboxInput(
inputId = ns("primary_key"), label = "Primary Key"
)),
column(
width = 9,
conditionalPanel(
condition = paste0("input['", ns("primary_key"), "'] == true"),
fluidRow(column(
width = 12,
checkboxInput(
inputId = ns("autoincrement_primary_key"),
label = "Autoincrement"
)
)),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("sort_order_primary_key"),
label = "Sort Order",
choices = c("ASC", "DEC"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("on_conflict_primary_key"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
)
)
)
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("unique"), label = "Unique"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("unique"), "'] == true"),
fluidRow(column(
width = 12,
selectizeInput(
inputId = ns("on_conflict_unique"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("not_null"), label = "Not Null"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("not_null"), "'] == true"),
fluidRow(column(
width = 12,
selectizeInput(
inputId = ns("on_conflict_not_null"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("default"), label = "Default Value"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("default"), "'] == true"),
fluidRow(column(
width = 12,
textInput(
inputId = ns("default_value_default"),
label = "Specify Default Value"
)
))
))
),
fluidRow(
column(
width = 3,
checkboxInput(inputId = ns("check_condition"),
label = "Check Condition")
),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("check_condition"), "'] == true"),
fluidRow(column(
width = 12,
textInput(
inputId = ns("specify_condition_check_condition"),
label = "Specify Condition"
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("collate"), label = "Collate"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("collate"), "'] == true"),
fluidRow(column(
width = 12,
selectInput(
inputId = ns("collation_type_collate"),
label = "Collation Type",
choices = c("RTRIM", "NOCASE", "BINARY")
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("foreign_key"),
label = "Foreign Key"
)),
column(
width = 9,
conditionalPanel(
condition = paste0("input['", ns("foreign_key"), "'] == true"),
fluidRow(
column(
width = 6,
selectInput(
inputId = ns("foreign_table_foreign_key"),
label = "Select Foreign Table",
choices = NULL
)
),
column(
width = 6,
selectInput(
inputId = ns("foreign_column_foreign_key"),
label = "Select Foreign Column",
choices = NULL
)
)
),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("on_update_foreign_key"),
label = "ON UPDATE",
choices = c("NO ACTION",
"SET NULL",
"SET DEFAULT",
"CASCADE",
"RESTRICT"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("on_delete_foreign_key"),
label = "ON DELETE",
choices = c("NO ACTION",
"SET NULL",
"SET DEFAULT",
"CASCADE",
"RESTRICT"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("match_foreign_key"),
label = "MATCH",
choices = c("SIMPLE", "PARTIAL", "FULL"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("defer_first_foreign_key"),
choices = c("DEFERRABLE", "NON DEFERRABLE"),
label = "Deferred Foreign Key:",
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
),
fluidRow(column(
width = 6,
selectizeInput(
inputId = ns("defer_second_foreign_key"),
choices = c("DEFERRED", "IMMEDIATE"),
label = "Initially:",
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
)
)
),
fluidRow(column(
width = 12,
actionButton(inputId = ns("confirm_column"),
label = "Confirm Column Details")
)),
br(),
br(),
fluidRow(column(width = 12,
DT::DTOutput(
ns("display_new_table_modal")
)))
)
))
})
observeEvent(input$foreign_key, {
if (!is.null(conn$active_db)) {
updateSelectInput(
session = session,
inputId = "foreign_table_foreign_key",
choices = RSQLite::dbListTables(conn$active_db)
)
}
})
observeEvent(input$foreign_table_foreign_key, {
if (input$foreign_table_foreign_key != "") {
updateSelectInput(
session = session,
inputId = "foreign_column_foreign_key",
choices = RSQLite::dbGetQuery(
conn$active_db,
table_structure_query(input$foreign_table_foreign_key)
)$name
)
}
})
observeEvent(input$confirm_column, {
if (input$column_name == "")
showNotification(ui = "Please enter column name.",
duration = 3,
type = "error")
else if (isTRUE(input$default) &&
input$default_value_default == "")
showNotification(ui = "Please specify default value.",
duration = 3,
type = "error")
else if (isTRUE(input$check_condition) &&
input$specify_condition_check_condition == "")
showNotification(ui = "Please specify check condition.",
duration = 3,
type = "error")
else if (input$defer_first_foreign_key == "" &&
input$defer_second_foreign_key != "")
showNotification(ui = "Deferred foreign key constraints not completely specified.",
duration = 3,
type = "error")
else{
column_details_query <-
column_details_query(
column_name = input$column_name,
data_type = input$data_type,
primary_key = input$primary_key,
autoincrement_primary_key = input$autoincrement_primary_key,
sort_order_primary_key = input$sort_order_primary_key,
on_conflict_primary_key = input$on_conflict_primary_key,
unique = input$unique,
on_conflict_unique = input$on_conflict_unique,
not_null = input$not_null,
on_conflict_not_null = input$on_conflict_not_null,
default = input$default,
default_value_default = input$default_value_default,
check_condition = input$check_condition,
specify_condition_check_condition = input$specify_condition_check_condition,
collate = input$collate,
collation_type_collate = input$collation_type_collate,
foreign_key = input$foreign_key,
foreign_table_foreign_key = input$foreign_table_foreign_key,
foreign_column_foreign_key = input$foreign_column_foreign_key,
on_update_foreign_key = input$on_update_foreign_key,
on_delete_foreign_key = input$on_delete_foreign_key,
match_foreign_key = input$match_foreign_key,
defer_first_foreign_key = input$defer_first_foreign_key,
defer_second_foreign_key = input$defer_second_foreign_key
)
# rbind() messes with column names
# Reference here: https://stackoverflow.com/q/5231540/
info$new_table_columns[nrow(info$new_table_columns) + 1,] <-
c(
column_details_query,
input$column_name,
input$data_type,
input$primary_key,
input$unique,
input$not_null,
input$default,
input$check_condition,
input$collate,
input$foreign_key
)
showNotification(ui = "Column added successfully.",
duration = 3,
type = "message")
}
})
observeEvent(input$create_new_table, {
if (input$new_table_name == "")
showNotification(ui = "Please specify a table name.",
duration = 3,
type = "error")
else if (nrow(info$new_table_columns) == 0)
showNotification(ui = "Please add atleast one column first.",
duration = 3,
type = "error")
else{
create_table_query <- create_table_query(input$new_table_name,
info$new_table_columns$column_query)
tryCatch({
RSQLite::dbExecute(conn$active_db, create_table_query)
action_create_table$created_table <-
input$create_new_table
updateTextInput(session,
inputId = "new_table_name",
value = "")
info$new_table_columns <- data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
showNotification(ui = "Table Created Successfully.",
duration = 3,
type = "message")
},
error = function(err) {
showNotification(
ui = paste0(err, ". Table not created."),
duration = 3,
type = "error"
)
})
}
})
# Recreate an empty table to reset columns.
observeEvent(input$reset_columns, {
info$new_table_columns <- data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
})
observeEvent(input$remove_columns, {
if (is.null(input$display_new_table_rows_selected))
showNotification(ui = "No column selected",
duration = 3,
type = "error")
else{
info$new_table_columns <-
info$new_table_columns[-as.numeric(input$display_new_table_rows_selected),]
}
})
return(action_create_table)
}
## To be copied in the UI
# mod_create_table_ui("create_table_ui_1")
## To be copied in the server
# callModule(mod_create_table_server, "create_table_ui_1")
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Defines functions mod_create_table_server mod_create_table_ui
#' create_table UI Function
#'
#' @description A shiny Module.
#'
#' @param id,input,output,session Internal parameters for {shiny}.
#'
#' @noRd
#'
#' @importFrom DT DTOutput
#' @importFrom DT renderDT
#' @importFrom DT datatable
#' @importFrom RSQLite dbExecute
mod_create_table_ui <- function(id) {
ns <- NS(id)
tabPanel(title = "Create Tables",
column(
width = 12,
fluidRow(column(width = 12, h2(
"Create a New Table"
))),
fluidRow(column(
width = 12, textInput(
inputId = ns("new_table_name"),
label = p("Enter New Table Name")
)
)),
fluidRow(column(
width = 12, conditionalPanel(
condition = paste0("input['", ns("new_table_name"), "'] != ''"),
column(
width = 12,
fluidRow(DT::DTOutput(ns(
"display_new_table"
))),
fluidRow(
actionButton(inputId = ns("add_column"),
label = "Add a New Column"),
actionButton(inputId = ns("remove_columns"),
label = "Remove Selected Columns"),
actionButton(inputId = ns("reset_columns"),
label = "Reset Columns"),
actionButton(inputId = ns("create_new_table"),
label = "Create New Table")
)
)
)
)),
br()
))
}
#' create_table Server Function
#'
#' @noRd
mod_create_table_server <- function(input, output, session, conn) {
ns <- session$ns
# info$new_table_columns - information about the columns user is adding along with the corresponding
# column details query in the first column.
info <- reactiveValues(
new_table_columns = data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
)
# action_create_table$created_table - reactive value to notify other modules of creating a table.
action_create_table <- reactiveValues(created_table = NULL)
output$display_new_table <-
DT::renderDT(expr = {
DT::datatable(
data = info$new_table_columns[, c(-1)],
rownames = FALSE,
selection = "multiple"
)
})
# Displaying the new table structure inside the modal dialog box.
output$display_new_table_modal <-
DT::renderDT(expr = {
DT::datatable(
data = info$new_table_columns[, c(-1,-4:-10)],
rownames = FALSE,
selection = "multiple"
)
})
# Reference for how to write conditions for conditional panels here:
# https://github.com/rstudio/shiny/issues/1586
observeEvent(input$add_column, {
showModal(modalDialog(
size = "l",
title = "Add New Columns",
column(
width = 12,
fluidRow(
column(width = 6,
textInput(
inputId = ns("column_name"), label = "Column Name"
)),
column(
width = 6,
selectInput(
inputId = ns("data_type"),
label = "Data Type",
choices = c(
"BIGINT",
"BLOB",
"BOOLEAN",
"CHAR",
"DATE",
"DATETIME",
"DECIMAL",
"DOUBLE",
"INTEGER",
"INT",
"NONE",
"NUMERIC",
"REAL",
"STRING",
"TEXT",
"TIME",
"VARCHAR"
)
)
)
),
fluidRow(
column(width = 3, checkboxInput(
inputId = ns("primary_key"), label = "Primary Key"
)),
column(
width = 9,
conditionalPanel(
condition = paste0("input['", ns("primary_key"), "'] == true"),
fluidRow(column(
width = 12,
checkboxInput(
inputId = ns("autoincrement_primary_key"),
label = "Autoincrement"
)
)),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("sort_order_primary_key"),
label = "Sort Order",
choices = c("ASC", "DEC"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("on_conflict_primary_key"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
)
)
)
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("unique"), label = "Unique"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("unique"), "'] == true"),
fluidRow(column(
width = 12,
selectizeInput(
inputId = ns("on_conflict_unique"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("not_null"), label = "Not Null"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("not_null"), "'] == true"),
fluidRow(column(
width = 12,
selectizeInput(
inputId = ns("on_conflict_not_null"),
label = "On Conflict",
choices = c("ROLLBACK", "ABORT", "FAIL", "IGNORE", "REPLACE"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("default"), label = "Default Value"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("default"), "'] == true"),
fluidRow(column(
width = 12,
textInput(
inputId = ns("default_value_default"),
label = "Specify Default Value"
)
))
))
),
fluidRow(
column(
width = 3,
checkboxInput(inputId = ns("check_condition"),
label = "Check Condition")
),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("check_condition"), "'] == true"),
fluidRow(column(
width = 12,
textInput(
inputId = ns("specify_condition_check_condition"),
label = "Specify Condition"
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("collate"), label = "Collate"
)),
column(width = 9,
conditionalPanel(
condition = paste0("input['", ns("collate"), "'] == true"),
fluidRow(column(
width = 12,
selectInput(
inputId = ns("collation_type_collate"),
label = "Collation Type",
choices = c("RTRIM", "NOCASE", "BINARY")
)
))
))
),
fluidRow(
column(width = 3,
checkboxInput(
inputId = ns("foreign_key"),
label = "Foreign Key"
)),
column(
width = 9,
conditionalPanel(
condition = paste0("input['", ns("foreign_key"), "'] == true"),
fluidRow(
column(
width = 6,
selectInput(
inputId = ns("foreign_table_foreign_key"),
label = "Select Foreign Table",
choices = NULL
)
),
column(
width = 6,
selectInput(
inputId = ns("foreign_column_foreign_key"),
label = "Select Foreign Column",
choices = NULL
)
)
),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("on_update_foreign_key"),
label = "ON UPDATE",
choices = c("NO ACTION",
"SET NULL",
"SET DEFAULT",
"CASCADE",
"RESTRICT"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("on_delete_foreign_key"),
label = "ON DELETE",
choices = c("NO ACTION",
"SET NULL",
"SET DEFAULT",
"CASCADE",
"RESTRICT"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
),
fluidRow(
column(
width = 6,
selectizeInput(
inputId = ns("match_foreign_key"),
label = "MATCH",
choices = c("SIMPLE", "PARTIAL", "FULL"),
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
),
column(
width = 6,
selectizeInput(
inputId = ns("defer_first_foreign_key"),
choices = c("DEFERRABLE", "NON DEFERRABLE"),
label = "Deferred Foreign Key:",
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
)
),
fluidRow(column(
width = 6,
selectizeInput(
inputId = ns("defer_second_foreign_key"),
choices = c("DEFERRED", "IMMEDIATE"),
label = "Initially:",
options = list(
placeholder = "Select an Option/ Leave Empty",
onInitialize = I('function() { this.setValue(""); }')
)
)
))
)
)
),
fluidRow(column(
width = 12,
actionButton(inputId = ns("confirm_column"),
label = "Confirm Column Details")
)),
br(),
br(),
fluidRow(column(width = 12,
DT::DTOutput(
ns("display_new_table_modal")
)))
)
))
})
observeEvent(input$foreign_key, {
if (!is.null(conn$active_db)) {
updateSelectInput(
session = session,
inputId = "foreign_table_foreign_key",
choices = RSQLite::dbListTables(conn$active_db)
)
}
})
observeEvent(input$foreign_table_foreign_key, {
if (input$foreign_table_foreign_key != "") {
updateSelectInput(
session = session,
inputId = "foreign_column_foreign_key",
choices = RSQLite::dbGetQuery(
conn$active_db,
table_structure_query(input$foreign_table_foreign_key)
)$name
)
}
})
observeEvent(input$confirm_column, {
if (input$column_name == "")
showNotification(ui = "Please enter column name.",
duration = 3,
type = "error")
else if (isTRUE(input$default) &&
input$default_value_default == "")
showNotification(ui = "Please specify default value.",
duration = 3,
type = "error")
else if (isTRUE(input$check_condition) &&
input$specify_condition_check_condition == "")
showNotification(ui = "Please specify check condition.",
duration = 3,
type = "error")
else if (input$defer_first_foreign_key == "" &&
input$defer_second_foreign_key != "")
showNotification(ui = "Deferred foreign key constraints not completely specified.",
duration = 3,
type = "error")
else{
column_details_query <-
column_details_query(
column_name = input$column_name,
data_type = input$data_type,
primary_key = input$primary_key,
autoincrement_primary_key = input$autoincrement_primary_key,
sort_order_primary_key = input$sort_order_primary_key,
on_conflict_primary_key = input$on_conflict_primary_key,
unique = input$unique,
on_conflict_unique = input$on_conflict_unique,
not_null = input$not_null,
on_conflict_not_null = input$on_conflict_not_null,
default = input$default,
default_value_default = input$default_value_default,
check_condition = input$check_condition,
specify_condition_check_condition = input$specify_condition_check_condition,
collate = input$collate,
collation_type_collate = input$collation_type_collate,
foreign_key = input$foreign_key,
foreign_table_foreign_key = input$foreign_table_foreign_key,
foreign_column_foreign_key = input$foreign_column_foreign_key,
on_update_foreign_key = input$on_update_foreign_key,
on_delete_foreign_key = input$on_delete_foreign_key,
match_foreign_key = input$match_foreign_key,
defer_first_foreign_key = input$defer_first_foreign_key,
defer_second_foreign_key = input$defer_second_foreign_key
)
# rbind() messes with column names
# Reference here: https://stackoverflow.com/q/5231540/
info$new_table_columns[nrow(info$new_table_columns) + 1,] <-
c(
column_details_query,
input$column_name,
input$data_type,
input$primary_key,
input$unique,
input$not_null,
input$default,
input$check_condition,
input$collate,
input$foreign_key
)
showNotification(ui = "Column added successfully.",
duration = 3,
type = "message")
}
})
observeEvent(input$create_new_table, {
if (input$new_table_name == "")
showNotification(ui = "Please specify a table name.",
duration = 3,
type = "error")
else if (nrow(info$new_table_columns) == 0)
showNotification(ui = "Please add atleast one column first.",
duration = 3,
type = "error")
else{
create_table_query <- create_table_query(input$new_table_name,
info$new_table_columns$column_query)
tryCatch({
RSQLite::dbExecute(conn$active_db, create_table_query)
action_create_table$created_table <-
input$create_new_table
updateTextInput(session,
inputId = "new_table_name",
value = "")
info$new_table_columns <- data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
showNotification(ui = "Table Created Successfully.",
duration = 3,
type = "message")
},
error = function(err) {
showNotification(
ui = paste0(err, ". Table not created."),
duration = 3,
type = "error"
)
})
}
})
# Recreate an empty table to reset columns.
observeEvent(input$reset_columns, {
info$new_table_columns <- data.frame(
column_query = character(),
Column_Name = character(),
Data_Type = character(),
Primary_Key = logical(),
Unique = logical(),
Not_Null = logical(),
Default = logical(),
Check_Condition = logical(),
Collate = logical(),
Foreign_Key = logical(),
stringsAsFactors = FALSE
)
})
observeEvent(input$remove_columns, {
if (is.null(input$display_new_table_rows_selected))
showNotification(ui = "No column selected",
duration = 3,
type = "error")
else{
info$new_table_columns <-
info$new_table_columns[-as.numeric(input$display_new_table_rows_selected),]
}
})
return(action_create_table)
}
## To be copied in the UI
# mod_create_table_ui("create_table_ui_1")
## To be copied in the server
# callModule(mod_create_table_server, "create_table_ui_1")
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