[1.12][Per Display contents of a chest onto a monitor?

Hi everyone! I decided I needed a new skill in life and over the weekend I dove into ComputerCraft for 1.12. I have Plethora Peripherals and PeripheralsPlusOne installed. My project goal is to get the contents of a chest to display on a monitor. I am using a chest on the left, a single (normal) computer in the middle, and 4 monitor screens on the right. I figured out how to wrap the chest as a peripheral and to display its contents as a list, but I ran into a road block using the monitors.

So far I have the following:

chest = peripheral.wrap("left")
monitor = peripheral.wrap("right")

monitor.write( "chest.list()" )

I know the chest.list() worked after wrapping the chest. How ever everytime I opened and closed the computer, the peripheral wrap disappeared? Do I need to save this as a program? I would appreciate any help, or nudges in the correct direction.

While not a complete solve, I figured out my initial issue.

I erroneously put the quotations into the .write line

I was able to get a print on the monitor and figured out how to resize the text. Now I just need to figure out to only return name and qty from .list() rather than the default response.

Cricketface, on 04 April 2018 - 06:14 PM said:

I was able to get a print on the monitor and figured out how to resize the text. Now I just need to figure out to only return name and qty from .list() rather than the default response.

.list() returns a table which looks something like this:

{
  [1] = { name = "minecraft.dirt", count = 5, damage = 0 },
  [12] = { name = "minecraft.sticks", count = 12, damage = 0 },
  --# etc...
}

In order to print this to the monitor, you'll need to iterate over every slot and extract the relevant fields from the item data:

local y = 1
for slot, item in pairs(chest.list()) do
  monitor.setCursorPos(1, y)
  monitor.write(slot .. " " .. item.name .. " " .. item.count)
  y = y + 1
end

@SquidDev thank you for the reply! That worked splendidly, especially after I figured out how to remove the 'slot' data from the monitor.write. Makes the printed info more clean. :)/>

I have two more questions if you don't mind helping out. I made a simple program to clear my monitor screen, but it's time consuming to use my clear program and then re-run the chest.list program I have. Is there a function I could add in that would have the monitor.write line re-print any time I open or close the chest? (or if the qty of an item increases/decreases? Going to rewrite this program for YABBA barrels when I try to learn modems.)

I also noticed .list() only returns the item.name in it's table, I think I would prefer writing the displayName instead. I noticed your Plethora Peripherals mod has .getItemMeta(). I am struggling on how to get that peripheral to work in the manner we did the chest.list() loop.

Again I really appreciate the help.