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PODjango get_FOO_display and distinct()
 

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  1. PODjango get_FOO_display and distinct()
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    <p>I've seen answers to both halves of my question, but I can't work out how to marry the two.</p> <p>I have a book model, and a translatedBook model.</p> <p>The translatedBook has a langage set up as model choices in the usual way:</p> <pre><code>LANGUAGES = ( (u'it', u'Italian'), (u'ja', u'Japanese'), (u'es', u'Spanish'), (u'zh-cn', u'Simplified Chinese'), (u'zh-tw', u'Traditional Chinese'), (u'fr', u'French'), (u'el', u'Greek'), (u'ar', u'Arabic'), (u'bg', u'Bulgarian'), (u'bn', u'Bengali'), </code></pre> <p>etc</p> <p>I know that to get "Italian" I have to do translatedBook.get_language_display on a Book object.</p> <p>But how do I get a list of <strong>distinct</strong> languages in their long format?</p> <p>I've tried:</p> <pre><code>lang_avail = TargetText.objects.values('language').distinct().order_by('language') lang_avail = TargetText.objects.distinct().order_by('language').values('language'). lang_avail = TargetText.objects.all().distinct('language').order_by('language') </code></pre> <p>but I can't seem to get what I want - which is a list like:</p> <p>"English, Italian, Simplified Chinese, Spanish"</p> <p>The final lang_avail listed above didn't return the list of 5, it returned the list of 355 (ie, # of books) with multiple repeats....</p> <p>-- EDIT --</p> <p>Daniel's answer almost got me there - as it turns out, that throws a "dicts are unhashable" error. Thanks to Axiak on the django irc, we use Daniel's solution with this line instead:</p> <pre><code>langs = TargetText.objects.values_list('language', flat=True).distinct().order_by('language') </code></pre> <p>and it works. </p>
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