Need help converting string

[jkub]

I would usually know how to convert a string into a number normally using tostring or tonumber but now I am getting data from a gui gridlist I have created and now I cannot do anything.

I am storing a "price" in one of the grid list rows on the "priceColumn" and I use guiGridListGetItemText to retrieve the price that is displayed inside the row on the price column. It returns a string So I am able to output the correct thing to the chatbox but when I try to take it convert it to a number using tonumber it comes back as nil.

Attempt to compare nil with number is what I get.

here is some of my code

function clickHandler ( button )
if source == shopWindow_Close then
guiSetVisible ( shopWindow_Wang, false )
showCursor ( false )
removeEventHandler ( "onClientRender", getRootElement(), frameHandler )
destroyElement ( dummyCar )
elseif source == shopWindow_Purchase then
local money = getPlayerMoney ( getLocalPlayer() )
if ( money >= price ) then
outputChatBox ( "You can afford these hax!", 0, 255, 0 )
else
outputChatBox ( "You cannot afford these hax...", 255, 0, 0 )
end
end
end
 
function gridClickHandler ( button )
row, column = guiGridListGetSelectedItem ( wangList )
local data = guiGridListGetItemText ( wangList, row, vehicleColumn )
local pricereturn = guiGridListGetItemText ( wangList, row, priceColumn )
if row then
setElementModel ( dummyCar, getVehicleIDFromName ( tostring(data) ) )
	price = tostring(pricereturn)
outputChatBox ( price )
end
end

Btw I am trying yet again to make a little vehicle shop type deal. So you might know where I might be going

Please help

[jkub]

I would usually know how to convert a string into a number normally using tostring or tonumber but now I am getting data from a gui gridlist I have created and now I cannot do anything.

I am storing a "price" in one of the grid list rows on the "priceColumn" and I use guiGridListGetItemText to retrieve the price that is displayed inside the row on the price column. It returns a string So I am able to output the correct thing to the chatbox but when I try to take it convert it to a number using tonumber it comes back as nil.

Attempt to compare nil with number is what I get.

here is some of my code

function clickHandler ( button )
if source == shopWindow_Close then
guiSetVisible ( shopWindow_Wang, false )
showCursor ( false )
removeEventHandler ( "onClientRender", getRootElement(), frameHandler )
destroyElement ( dummyCar )
elseif source == shopWindow_Purchase then
local money = getPlayerMoney ( getLocalPlayer() )
if ( money >= price ) then
outputChatBox ( "You can afford these hax!", 0, 255, 0 )
else
outputChatBox ( "You cannot afford these hax...", 255, 0, 0 )
end
end
end
 
function gridClickHandler ( button )
row, column = guiGridListGetSelectedItem ( wangList )
local data = guiGridListGetItemText ( wangList, row, vehicleColumn )
local pricereturn = guiGridListGetItemText ( wangList, row, priceColumn )
if row then
setElementModel ( dummyCar, getVehicleIDFromName ( tostring(data) ) )
	price = tostring(pricereturn)
outputChatBox ( price )
end
end

Btw I am trying yet again to make a little vehicle shop type deal. So you might know where I might be going

Please help

[Remp]

which line is the actual error on?

i cant see much we can do with the code you provided, can you also show us your gridlist text?

by the looks of it your 'price' variable is global, so if thats your problem variable then make sure it actually has a value

theres no reason why tonumber would return nil if you are actually passing a numeric string, make sure there are no currency signs, erroneous spaces, etc as well

[Remp]

which line is the actual error on?

i cant see much we can do with the code you provided, can you also show us your gridlist text?

by the looks of it your 'price' variable is global, so if thats your problem variable then make sure it actually has a value

theres no reason why tonumber would return nil if you are actually passing a numeric string, make sure there are no currency signs, erroneous spaces, etc as well

[jkub]

it says at line 100 "attempt to compare string with number"

ive already tried using if ( money >= tonumber(price) ) then

but that just makes it return nil like I said

function clickHandler ( button )
if source == shopWindow_Close then
guiSetVisible ( shopWindow_Wang, false )
showCursor ( false )
removeEventHandler ( "onClientRender", getRootElement(), frameHandler )
destroyElement ( dummyCar )
elseif source == shopWindow_Purchase then
local money = getPlayerMoney ( getLocalPlayer() )
if ( money >= price ) then--!!!in my script this line here is line 100
outputChatBox ( "You can afford these hax!", 0, 255, 0 )
else
outputChatBox ( "You cannot afford these hax...", 255, 0, 0 )
end
end
end
 
function gridClickHandler ( button )
row, column = guiGridListGetSelectedItem ( wangList )
local data = guiGridListGetItemText ( wangList, row, vehicleColumn )
local pricereturn = guiGridListGetItemText ( wangList, row, priceColumn )
if row then
setElementModel ( dummyCar, getVehicleModelFromName ( tostring(data) ) )
	price = tostring(pricereturn)
outputChatBox ( price )
end
end

here is some gridlist code

vehicleColumn = guiGridListAddColumn ( wangList, "Vehicle", 0.3 )
priceColumn = guiGridListAddColumn ( wangList, "Price", 0.2 )
       row1 = guiGridListAddRow ( wangList )
guiGridListSetItemText ( wangList, row1, priceColumn, "$86,140", false, true )

at first I thought it would of been because I set the last boolean on setItemText to false which I think has somthing to do with rather the number is a number value so I set it to true... but still no luck

[jkub]

it says at line 100 "attempt to compare string with number"

ive already tried using if ( money >= tonumber(price) ) then

but that just makes it return nil like I said

function clickHandler ( button )
if source == shopWindow_Close then
guiSetVisible ( shopWindow_Wang, false )
showCursor ( false )
removeEventHandler ( "onClientRender", getRootElement(), frameHandler )
destroyElement ( dummyCar )
elseif source == shopWindow_Purchase then
local money = getPlayerMoney ( getLocalPlayer() )
if ( money >= price ) then--!!!in my script this line here is line 100
outputChatBox ( "You can afford these hax!", 0, 255, 0 )
else
outputChatBox ( "You cannot afford these hax...", 255, 0, 0 )
end
end
end
 
function gridClickHandler ( button )
row, column = guiGridListGetSelectedItem ( wangList )
local data = guiGridListGetItemText ( wangList, row, vehicleColumn )
local pricereturn = guiGridListGetItemText ( wangList, row, priceColumn )
if row then
setElementModel ( dummyCar, getVehicleModelFromName ( tostring(data) ) )
	price = tostring(pricereturn)
outputChatBox ( price )
end
end

here is some gridlist code

vehicleColumn = guiGridListAddColumn ( wangList, "Vehicle", 0.3 )
priceColumn = guiGridListAddColumn ( wangList, "Price", 0.2 )
       row1 = guiGridListAddRow ( wangList )
guiGridListSetItemText ( wangList, row1, priceColumn, "$86,140", false, true )

at first I thought it would of been because I set the last boolean on setItemText to false which I think has somthing to do with rather the number is a number value so I set it to true... but still no luck

[Remp]

are you sending the price just like that?

you will need to remove the dollar sign and the comma, eg: "$86,140" -> "86140"

then tonumber() it

[Remp]

are you sending the price just like that?

you will need to remove the dollar sign and the comma, eg: "$86,140" -> "86140"

then tonumber() it

[jkub]

Thanks That worked:) But... Now that I have done that in my guigrid list the price it just says 86140 instead of $86,140. is there a way I can have it displayed in the gui with the dollar sign and the comma with out it messing up the rest of the script when It comes to when I have to compare both the values again?

[jkub]

Thanks That worked:) But... Now that I have done that in my guigrid list the price it just says 86140 instead of $86,140. is there a way I can have it displayed in the gui with the dollar sign and the comma with out it messing up the rest of the script when It comes to when I have to compare both the values again?

[50p]

Thanks That worked:) But... Now that I have done that in my guigrid list the price it just says 86140 instead of $86,140. is there a way I can have it displayed in the gui with the dollar sign and the comma with out it messing up the rest of the script when It comes to when I have to compare both the values again?

You can use grid list item data to contain price as number and text to display $ sign.

https://wiki.multitheftauto.com/wiki/Gui ... etItemData

[50p]

Thanks That worked:) But... Now that I have done that in my guigrid list the price it just says 86140 instead of $86,140. is there a way I can have it displayed in the gui with the dollar sign and the comma with out it messing up the rest of the script when It comes to when I have to compare both the values again?

You can use grid list item data to contain price as number and text to display $ sign.

https://wiki.multitheftauto.com/wiki/Gui ... etItemData

[jkub]

I tried this to set the data

guiGridListSetItemData ( wangList, row1, priceColumn, 86140 )

and this to retrieve it

local price = guiGridListGetItemData ( wangList, row1, priceColumn )

then I try if ( money >= price ) then

but that returns attempt to compare nil with number

[jkub]

I tried this to set the data

guiGridListSetItemData ( wangList, row1, priceColumn, 86140 )

and this to retrieve it

local price = guiGridListGetItemData ( wangList, row1, priceColumn )

then I try if ( money >= price ) then

but that returns attempt to compare nil with number

[50p]

Make sure the ...GetItemData returns what you expect it to return.

[50p]

Make sure the ...GetItemData returns what you expect it to return.

[jkub]

I got it to work eventually and did the longer way of manually coding in the prices. Right now it works pretty good and I havent seen any errors in the debug box yet. later I was thinking about putting the prices in an xml file.

Thanks guys ill be back:)

[jkub]

I got it to work eventually and did the longer way of manually coding in the prices. Right now it works pretty good and I havent seen any errors in the debug box yet. later I was thinking about putting the prices in an xml file.

Thanks guys ill be back:)