Hi
Some of you were asking for it, so I just create a small plugin to add buy/sell option to your ads. Note: This will only shows if the item is for sale or the user is looking for something, it will not allow payment nor transactions.
InstallationDownload it and install as any other plugin (unzip and upload to your server via FTP or directly choose the zip via the admin panel)
UsageAs any other attributes plugin, under "configuration" you have to select to which categories you want it to apply.
Translating it to other languagesCurrently the plugin is written in English (Buy, Sell, All,...) but it has support for language files, anyway it should be easy to modify the texts to your custom language.
Adding new optionsThe default options are "buy" and "sell" (a third option, "all", appear only at the search form). To add or edit those options, modify the index.php file.
// ADD your own ads' types, VALUE should be a ONE WORD UPPERCASE used as a key
//$buysell_types['VALUE'] = __('Text to show', 'buysell');
$buysell_types['SELL'] = __('Sell', 'buysell');
$buysell_types['BUY'] = __('Buy', 'buysell');
Download the pluginDownload it from Sourceforge :
https://sourceforge.net/projects/osclass/files/Plugins/buy-sell-options/?