When changing article type (during submit/post/new article) the body field disappears

• Usability

(This bug has been tested and verified on clean installs of TW 1.10b1 , 1.9.11 and on opensourcecsm.com)

When someone starts to create a new article (submit/edit/new) and chooses a different article type from the menu "Type", the field "Body" disappears (even if the heading_only property of the field is NOT set).

The problem seems only to exist on clean installs with empty databases which fill up the default values with null instead of 'n' for the different type settings.

In turn, the conditional in the function chgArtType() in the file /lib/tiki-js.js does not do a proper checking of the null values creating a situation where it interprets that the heading_only property for all article types is active (or so I gather). Thus it disables the Body field every time regardless of what the property of the article type says.

A quick work-around:
-Go into /tiki-article_types.php as admin
-Make a change (any change) to a setting (any setting) and save your work
-Change back the setting you changed and save your work
This will force TW to fill in the DB with 'n' instead of NULLs and the javascript will do it's work as intended.

Coding solution that seems to work:
in the file /lib/tiki-js.js
in the function chgArtType()

replace
if (typePropertiesproperty == value) {

with
if (typePropertiesproperty == value || (value=='n' && typePropertiesproperty=='')) {

The later conditional checks for situations when the default value in the function is 'n' but is NULL in the database (i.e. the situation when you have a fresh install of TW)

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org