31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
from django.contrib.postgres.aggregates import StringAgg
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from django.contrib.postgres.search import (
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SearchQuery, SearchRank, SearchVector, TrigramSimilarity,
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)
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from django.db import models
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# TODO add search highlighting
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# TODO add language support
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# TODO add schedule index rebuild
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# TODO add admin function to rebuild index
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class RecipeSearchManager(models.Manager):
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def search(self, search_text, space):
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search_query = SearchQuery(
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search_text, config='english'
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)
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search_vectors = (
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SearchVector('search_vector')
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+ SearchVector(StringAgg('steps__ingredients__food__name', delimiter=' '), weight='A', config='english')
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+ SearchVector(StringAgg('keywords__name', delimiter=' '), weight='A', config='english'))
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search_rank = SearchRank(search_vectors, search_query)
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# trigram_similarity = TrigramSimilarity(
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# 'headline', search_text
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# )
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return (
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self.get_queryset()
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.annotate(search=search_vectors, rank=search_rank)
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.filter(search=search_query)
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.order_by('-rank'))
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