escpos / escpos Goto Github PK

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.

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

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?

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

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

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`?

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,

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

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