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I have my Markdown plugin installed and working fine on the site, but in a page plugin when I try to load the viewer I get an error message: "[no viewer found for format: markdown]". I am using this code:

$viewer = qa_load_viewer( $content, 'html' );
$html = '<div>' . $viewer->get_html( $content, $format, $options ) . '</div>';

Here, $content is the content field from qa_posts and $format is its corresponding format field (which is 'markdown'). Did I miss something?

Q2A version: 1.5

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What happened is that you loaded the viewer for HTML content and then tried to get it to display the markdown content. You probably ust want to use qa_viewer_html(...) from qa-app-format.php, otherwise pass $format in qa_load_viewer(...) instead of 'html'.

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OK thanks I will check it out. The problem with passing $format into qa_load_viewer is that I only do that once, then call get_html inside a loop, so the format there could be different each time. I thought the parameter to qa_load_viewer was supposed to be the final output format rather than the storage format.
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Tested and that function works fine. Looks like basically does the same as the code above, but passing the posts's format into the viewer initialisation too.
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