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Is it any way to get characters like HW_INIT, CTL_CR, etc, as Hexadecimal (something like ' "\x1B", instead of "\e") when I run #to_escpos`?

hi,

thank you for your effort in putting this great implementation together.

do you have any advice for concatenating helper methods?
for example, applying 'big' and 'center' to a string simultaneously.

thank you,
spencer

[29] pry(main)> @printer = Escpos::Printer.new
=> #<Escpos::Printer:0x00007efc2e1bbd78 @data="\e@">
[30] pry(main)> @printer << "Some text"
=> "\e@Some text"
[31] pry(main)> @printer << Escpos::Helpers.big("Big text")
NoMethodError: undefined method `big' for Escpos::Helpers:Module

even had to wrap big call in brackets, otherwise syntax error.

Ruby 3.2

Hi,

First of all thank you for your work.
I have a problem with helpers, if I try to use them I always get for instance "NoMethodError (undefined method `center'").

this is my report class:

class MerchantInfo < Escpos::Report

  def cfe_data
    options[:cfe_data]
  end

  def merchant_title text
    center "#{text}"
  end

  def self.create_merchant_info
    layout_dir = Rails.root.join('app/views/api/v1/thermal_cfe/merchant_info.erb').to_s
    cfe_layout = MerchantInfo.new(layout_dir,
                                  {
                                      cfe_data:Hash(merchant:COMMERCES[0])
                                  }
    )
    puts "cfe_layout #{cfe_layout.to_json}"
    cfe_layout
  end
end

this is my view file:
#merchant_info.erb

<%=merchant_title cfe_data[:merchant]%>

ruby version 2.5.3
rails version 5.2.1

Thank you in advance for your help.

Hi ， I use @printer.to_escpos the Chinese but show my scrambled code. how can i solve it。thanks for your help

How I set th encoding to work on LATIN1 on CP_CP858

I trying to

text = Escpos::Printer.new
text << Escpos::Helpers.set_printer_encoding(Escpos::CP_CP858)
text << Escpos::Helpers.encode(ptr_text, encoding: "CP-858")

but I having the error code converter not found (UTF-8 to CP-858)

how I use this code table?

Hello,
I have everything setup as said in the documentation but have nothing when I try. Is there anything else to install or configure?

Hi, I wrote node-escpos for node.js, could i join escpos organization ?

Docs not giving actual example but using hard coded data like for some static report

<%= item "First item" %>
<%= item "Second item" %>
<%= item "Third item" %>

There should have been some actual object like an order with items etc.

Now how to pass an object report.erb from
report = MyReport.new 'path/to/my_report.erb'

than using multiple styles, its just showing quad_text
& exactly at which point it sends data to printer

Hi, I'm trying to build a feature using the Escpos::Report.

But when I try to use ActionView::Helpers (already included in the Report Class), it throws a weird error:

#<NoMethodError: undefined method `in_rendering_context' for <EscPosServices::Reports::Invoice:0x00007f849e226af8>>

I leave an example:

# invoice.rb
class EscPosServices::Reports::Invoice < Escpos::Report
  include ActionView::Helpers

  def sale
    options[:sale]
  end

  def current_tenant
    options[:current_tenant]
  end
end

<%= right(bold("Subtotal: ") + number_to_currency(sale.subtotal)) %>
<%= right(bold("Descuento: ") + number_to_currency(sale.discount_amount)) %>

Versions:
Rails 6.0.3.7
Escpos gem 0.0.10
Ruby 2.7.3

This looks like a brilliant gem. Could you confirm which printers you know work with this?

I've tried your sample code with my Brother TD-4000 but so far it's stubbornly silent.