Fix issue #539

Form validation language line keys were not prefixed. They are
now prefixed with 'form_validation_' in order to avoid collisions.
The old keys will still work if a prefixed match is not found, but
are DEPRECATED and will be removed in the next major version.

Also added upgrade notes and changelog entries for the new error
message format from PR #961.

1 files changed, 5 insertions, 3 deletions

diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index daf796504..61c79417c 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -73,7 +73,7 @@ Release Date: Not Released
 	 - Added JS window name support to the :php:func:`anchor_popup()` function.
 	 - Added support (auto-detection) for HTTP/1.1 response code 303 in :php:func:`redirect()`.
 	 - Changed :php:func:`redirect()` to only choose the **refresh** method only on IIS servers, instead of all servers on Windows (when **auto** is used).
-	 - Changed :php:func:`anchor()`, :php:func:`anchor_popup()`, and :php:func:`redirect()` to support protocol-relative URLs, such as `redirect('//ellislab.com/codeigniter')`.
+	 - Changed :php:func:`anchor()`, :php:func:`anchor_popup()`, and :php:func:`redirect()` to support protocol-relative URLs (e.g. *//ellislab.com/codeigniter*).
    -  Added XHTML Basic 1.1 doctype to :doc:`HTML Helper <helpers/html_helper>`.
    -  :doc:`Inflector Helper <helpers/inflector_helper>` changes include:
 	 - Changed :php:func:`humanize()` to allow passing an input separator as its second parameter.
@@ -225,13 +225,15 @@ Release Date: Not Released
 	 -  Added method ``set_data()`` to set an alternative data array to be validated instead of the default ``$_POST``.
 	 -  Added method ``reset_validation()`` which resets internal validation variables in case of multiple validation routines.
 	 -  Added support for setting error delimiters in the config file via ``$config['error_prefix']`` and ``$config['error_suffix']``.
-	 -  ``_execute()`` now considers input data to be invalid if a specified rule is not found.
+	 -  Internal method ``_execute()`` now considers input data to be invalid if a specified rule is not found.
 	 -  Removed method ``is_numeric()`` as it exists as a native PHP function and ``_execute()`` will find and use that (the **is_numeric** rule itself is deprecated since 1.6.1).
 	 -  Native PHP functions used as rules can now accept an additional parameter, other than the data itself.
-	 -  Updated ``set_rules()`` to accept an array of rules as well as a string.
+	 -  Updated method ``set_rules()`` to accept an array of rules as well as a string.
 	 -  Fields that have empty rules set no longer run through validation (and therefore are not considered erroneous).
 	 -  Added rule **differs* to check if the value of a field differs from the value of another field.
 	 -  Added rule **valid_url**.
+	 -  Added support for named parameters in error messages.
+	 -  :doc:`Language <libraries/language>` line keys must now be prefixed with **form_validation_**.
    -  Added support for setting :doc:`Table <libraries/table>` class defaults in a config file.
    -  :doc:`Caching Library <libraries/caching>` changes include:
 	 -  Added Wincache driver.