More 158+ content for modules

content/dev/code/Modules/clone_payment.md

@@ -2,6 +2,9 @@
 title: Cloning a Payment Module
 description: Building a new payment module based on an existing one 
 ---
+
+**Note:** These instructions are for Zen Cart 1.5.8 and above.  For Zen Cart 1.5.7 and below, please see [Cloning a Payment Module in 1.5.7 and below](/dev/code/modules/clone_payment_157/).
+
 You can create new Payment Module by making a clone of the closest matching Payment Module to what you are trying to do.
 
 As an example, we will consider the `moneyorder` payment module. 
@@ -12,9 +15,11 @@ The code file is located in:
 `/includes/modules/payment/moneyorder.php`
 
 The language file is located in:  
-`/includes/languages/english/modules/payment/moneyorder.php`
+`/includes/languages/english/modules/payment/lang.moneyorder.php`
 
-To clone this module, for example, to `venmo.php` you would copy the two `moneyorder.php` files to `venmo.php` 
+To clone this module, for example, to `venmo.php` you would:
+- copy `moneyorder.php` to `venmo.php`
+- copy `lang.moneyorder.php` to `lang.venmo.php`
 
 **Note:** Be sure the filename you choose does not have an underscore (`_`) in it.
 
@@ -48,6 +53,8 @@ $this->code = 'venmo';
 $this->title = MODULE_PAYMENT_VENMO_TEXT_TITLE;
 ```
 
+Be sure to make this change in the `remove()` function as well.
+
 These plugins might also help: 
 * [Optional Payment Method](https://www.zen-cart.com/downloads.php?do=file&id=1930) 
 

content/dev/code/Modules/clone_payment_157.md

@@ -0,0 +1,56 @@
+---
+title: Cloning a Payment Module (1.5.7 and below)
+description: Building a new payment module based on an existing one 
+---
+
+**Note:** These instructions are for Zen Cart 1.5.7 and below.  For Zen Cart 1.5.8 and higher, please see [Cloning a Payment Module](/dev/code/modules/clone_payment/).
+
+You can create new Payment Module by making a clone of the closest matching Payment Module to what you are trying to do.
+
+As an example, we will consider the `moneyorder` payment module. 
+
+Payment Modules have 2 parts: 
+
+The code file is located in:  
+`/includes/modules/payment/moneyorder.php`
+
+The language file is located in:  
+`/includes/languages/english/modules/payment/moneyorder.php`
+
+To clone this module, for example, to `venmo.php` you would copy the two `moneyorder.php` files to `venmo.php` 
+
+**Note:** Be sure the filename you choose does not have an underscore (`_`) in it.
+
+Next, you need to change all occurrences of the strings `moneyorder` and `MONEYORDER` as follows: 
+
+OLD | NEW
+----|----
+`moneyorder` | `venmo` 
+`MONEYORDER` | `VENMO` 
+
+These identifiers are case sensitive. 
+
+These words are written separately or within the constants such as:  
+
+
+```
+class moneyorder {
+... 
+$this->code = 'moneyorder';
+... 
+$this->title = MODULE_PAYMENT_MONEYORDER_TEXT_TITLE; 
+```
+
+becomes 
+
+```
+class venmo {
+...
+$this->code = 'venmo';
+...
+$this->title = MODULE_PAYMENT_VENMO_TEXT_TITLE;
+```
+
+These plugins might also help: 
+* [Optional Payment Method](https://www.zen-cart.com/downloads.php?do=file&id=1930) 
+

content/dev/code/Modules/order_total_modules.md

@@ -11,7 +11,7 @@ white-space: pre-wrap !important;
 Zen Cart *order-total* modules are used to calculate (and display) sub-totals, taxes, totals and other intermediary values for an order. *Order-total* modules can also calculate discounts or other subtractions from the amount a customer owes for an order. Each module includes, at a minimum, two files:
 
 1. A `class` file: /includes/modules/order_total/`my_order_total`.php
-1. A `language` file: /includes/languages/`current_language`/modules/order_total/`my_order_total`.php
+1. A `language` file: /includes/languages/`current_language`/modules/order_total/`lang.my_order_total`.php  (or simply `my_order_total.php` in 1.5.7 and below)
 
 The `language` file contains all the translatable language text for the module while the `class` file contains the module's processing portion.
 

content/dev/code/Modules/shipping_modules.md

@@ -11,7 +11,7 @@ white-space: pre-wrap !important;
 A shipping module applies a shipping cost to an order, based on some calculation method.  Each shipping module requires a minimum of two files:
 
 1. A `class` file: /includes/modules/shipping/`modulename`.php
-1. A `language` file: /includes/languages/`current_language`/modules/shipping/`modulename`.php
+1. A `language` file: /includes/languages/`current_language`/modules/shipping/`lang.modulename`.php (or simply `modulename.php` in 1.5.7 and below).
 
 The `language` file contains all the translatable language text for the module while the `class` file contains the module's processing portion.  A shipping module can include one or more `methods`.