Dont display post with no content

Question

In my blog index page I do not want to show posts which has empty content but only title (How does filter the_posts work?) . I am looking at 'the_post' hook which seems to fire inside the loop . So , I thought if the action hook is fired inside the loop I could check the post content on 'the_post' hook and if it is null continue with the loop . I tried the below :

add_action('the_post' , 'rb_test_the_post');

function rb_test_the_post($post){
    if (($post->post_content) == '') { 
        continue;
    }
} 

This gives me an error in Wordpress ( "The site is experiencing technical difficulties " and also in my editor as it doesnt see any while or if statement for the continue statement.) . I am not able to understand why the continue statement doesnt work even though the hook is fired inside the loop .Could some one please explain?

Also , how would one achieve this (using a plugin and not the theme as I want the empty posts not to show even when I change theme) ?

Answer 1

The content is a property of the post object, not of the query object.
Use $post or get_post() :

  if( '' !== get_post()->post_content ) {
    // do something
    }

Answer 2

Just check the post content is empty or not:

if ( "" === $post->post_content )
{
//dont display your post 
 }
else
{
 //your post's code goes here
  the_title();
  the_content();
 }

Answer 3

I wanted to do this using a plugin and not theme . Here is how :

function my_filter_where($where = ''){
    return $where .= "AND trim(coalesce(post_content, '')) <>''";
}
add_filter('posts_where', 'my_filter_where');