django-batch-select Batch select many-to-many and one-to-many fields (to help avoid n+1 query problem)
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Django batch select batch select n+1 query

django-batch-select Description

Batch select many-to-many and one-to-many fields (to help avoid n+1 query problem) django-batch-select was created to provide an equivalent to Django's select_related_ functionality. As of such it's another handy tool for avoiding the "n+1 query problem".select_related_ is handy for minimizing the number of queries that need to be made in certain situations. However it is only usual for pre-selecting ForeignKey_ relations.batch_select is handy for pre-selecting ManyToManyField_ relations and reverse ForeignKey_ relations.It works by performing a single extra SQL query after a QuerySet_ has been evaluated to stitch in the the extra fields asked for. This requires the addition of a custom Manager_, which in turn returns a custom QuerySet_ with extra methods attached. Requirements: · Python · Django

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