Picker: Is there a simple example for creating your own picker source?

[synic]

In telescope, I created my own project selector. It looks like the screenshot attached. The get_projets function returns a list of { name = string, path = string }. How would I make this a picker, hopefully with the name as the "main" display item, and then the actual path displayed as dimmer or something

[synic]

This is how I got it working. No idea if I did any of this right.

local snacks = require("snacks")
local config = require("ao.config")
local layout = require("snacks.picker.config.layouts")

local projects = require("ao.modules.projects").list({ cwd = config.options.projects.directory.path })

local width = 0
local height = math.min(#projects + 5, 25)

local max_name_length = 0
for _, entry in ipairs(projects) do
  entry.text = entry.name .. entry.path
  max_name_length = math.max(max_name_length, #entry.name)
  local total_length = #entry.text + 20
  if total_length > width then
    width = total_length
  end
end

width = math.min(width, 150)
local padding = max_name_length + 15

local format = function(item, _)
  local ret = {}
  ret[#ret + 1] = { item.name, "SnacksPickerLabel" }
  ret[#ret + 1] = { string.rep(" ", padding - #item.name), virtual = true }
  ret[#ret + 1] = { item.path, "SnacksPickerComment" }
  return ret
end

layout = vim.tbl_deep_extend("force", layout.telescope, {
  layout = {
    width = width,
    height = height,
    min_width = width,
    min_height = height,
    {
      box = "vertical",
      { win = "list", title = "Results", title_pos = "center", border = "rounded" },
      { win = "input", height = 1, border = "rounded", title = "Projects", title_pos = "center" },
    },
  },
  preview = false,
})

snacks.picker.pick({ items = projects, layout = layout, format = format })

Looks like this:

[kristijanhusak]

This is my custom picker for workspaces.nvim. Putting it here if anyone needs it:

    vim.keymap.set('n', '<Leader>w', function()
      local items = {}
      local longest_name = 0
      for i, workspace in ipairs(require('workspaces').get()) do
        table.insert(items, {
          idx = i,
          score = i,
          text = workspace.path,
          name = workspace.name,
        })
        longest_name = math.max(longest_name, #workspace.name)
      end
      longest_name = longest_name + 2
      return Snacks.picker({
        items = items,
        format = function(item)
          local ret = {}
          ret[#ret + 1] = { ('%-' .. longest_name .. 's'):format(item.name), 'SnacksPickerLabel' }
          ret[#ret + 1] = { item.text, 'SnacksPickerComment' }
          return ret
        end,
        confirm = function(picker, item)
          picker:close()
          vim.cmd(('WorkspacesOpen %s'):format(item.name))
        end,
      })
    end)
  end,