Wordpress Force Post to select category - wordpress

Question

i am using WordPress post to build post.is there any plugin or some function that warn be when i don't select a category for the post.its a headache ever time i post a category i miss some time as there is a lot of post to be made in the category after some time see those post in uncategory its a great headache.
add_theme_support('menus');
**
**> the above code is nothing because stack over flow doesn't allow me to
post my question as it say standard low.**
**
thanks in advance.
hope i could find one suitable answer

Answer 1

hah.. its so funny but you can try as below in your functions.php file
function force_post_categ_init()
{
wp_enqueue_script('jquery');
}
function force_post_categ()
{
echo "<script type='text/javascript'>\n";
echo "
jQuery('#publish').click(function()
{
var cats = jQuery('[id^=\"taxonomy\"]')
.find('.selectit')
.find('input');
category_selected=false;
for (counter=0; counter<cats.length; counter++)
{
if (cats.get(counter).checked==true)
{
category_selected=true;
break;
}
}
if(category_selected==false)
{
alert('You have not selected any category for the post. Please select post category.');
setTimeout(\"jQuery('#ajax-loading').css('visibility', 'hidden');\", 100);
jQuery('[id^=\"taxonomy\"]').find('.tabs-panel').css('background', '#F96');
setTimeout(\"jQuery('#publish').removeClass('button-primary-disabled');\", 100);
return false;
}
});
";
echo "</script>\n";
}
add_action('admin_init', 'force_post_categ_init');
add_action('edit_form_advanced', 'force_post_categ');
NOte:- javascript must be enable to run this

Answer 2

I would suggest using a jQuery object to read the real value of the input since the page can be loaded with a checked value and then an input can be un-checked and saved. This uses the jQuery object .is('checked') method:
function force_post_categ()
{
$custom_js = <<<CUSTOM_JS
<script type='text/javascript'>
jQuery('#publish').click(function()
{
var cats = jQuery('[id^="taxonomy"]').find('.selectit').find('input');
category_selected = false;
$.each(cats, function(key,value){
if ( $(this).is(':checked') == true ) {
category_selected = true;
return false;
}
});
if (category_selected == false)
{
alert('You have not selected any metro or country for the post. Please select a metro.');
setTimeout("jQuery('#ajax-loading').css('visibility', 'hidden');", 100);
jQuery('[id^="taxonomy"]').find('.tabs-panel').css('background', '#F96');
setTimeout("jQuery('#publish').removeClass('button-primary-disabled');", 100);
return false;
}
});
</script>
CUSTOM_JS;
echo $custom_js;
}