trigram_similarLink to this heading#The trigram_similar lookup allows you to perform trigram lookups,\nmeasuring the number of trigrams (three consecutive characters) shared, using a\ndedicated PostgreSQL extension. A trigram lookup is given an expression and\nreturns results that have a similarity measurement greater than the current\nsimilarity threshold.
To use it, add 'django.contrib.postgres' in your INSTALLED_APPS\nand activate the pg_trgm extension on PostgreSQL. You can install the\nextension using the\nTrigramExtension migration\noperation.
The trigram_similar lookup can be used on\nCharField and TextField:
>>> City.objects.filter(name__trigram_similar="Middlesborough")\n['<City: Middlesbrough>']\ntrigram_word_similarLink to this heading#The trigram_word_similar lookup allows you to perform trigram word\nsimilarity lookups using a dedicated PostgreSQL extension. It can be\napproximately understood as measuring the greatest number of trigrams shared\nbetween the parameter and any substring of the field. A trigram word lookup is\ngiven an expression and returns results that have a word similarity measurement\ngreater than the current similarity threshold.
To use it, add 'django.contrib.postgres' in your INSTALLED_APPS\nand activate the pg_trgm extension on PostgreSQL. You can install the\nextension using the\nTrigramExtension migration\noperation.
The trigram_word_similar lookup can be used on\nCharField and TextField:
>>> Sentence.objects.filter(name__trigram_word_similar="Middlesborough")\n['<Sentence: Gumby rides on the path of Middlesbrough>']\ntrigram_strict_word_similarLink to this heading#Similar to trigram_word_similar, except that it forces extent\nboundaries to match word boundaries.
To use it, add 'django.contrib.postgres' in your INSTALLED_APPS\nand activate the pg_trgm extension on PostgreSQL. You can install the\nextension using the\nTrigramExtension migration\noperation.
The trigram_strict_word_similar lookup can be used on\nCharField and TextField.
UnaccentLink to this heading#The unaccent lookup allows you to perform accent-insensitive lookups using\na dedicated PostgreSQL extension.
This lookup is implemented using Transform, so it\ncan be chained with other lookup functions. To use it, you need to add\n'django.contrib.postgres' in your INSTALLED_APPS and activate\nthe unaccent extension on PostgreSQL. The\nUnaccentExtension migration\noperation is available if you want to perform this activation using migrations).
The unaccent lookup can be used on\nCharField and TextField:
>>> City.objects.filter(name__unaccent="México")\n['<City: Mexico>']\n\n>>> User.objects.filter(first_name__unaccent__startswith="Jerem")\n['<User: Jeremy>', '<User: Jérémy>', '<User: Jérémie>', '<User: Jeremie>']\n