On 06/03/2016 11:18 AM, Adrian wrote:
I think there's a misunderstanding - I don't want to manually populate
the relationship, I want to avoid spamming queries if I get e.g. 10
categories and need the parent chains for all of them.
Here's a pseudo-ish example of what I'd like to do (without
I think there's a misunderstanding - I don't want to manually populate the
relationship, I want to avoid spamming queries if I get e.g. 10 categories
and need the parent chains for all of them.
Here's a pseudo-ish example of what I'd like to do (without queries in the
loop):
categories =
you would first set up a traditional adjacency list relationship as in
http://docs.sqlalchemy.org/en/latest/orm/self_referential.html?highlight=adjacency%20list.
Second, as you run this query you can retrieve Category objects fully,
however they will be in a straight down list. As you
I have a Category model that has (among other things) a `id` and
`parent_id` since my categories are organized in a tree.
@property
def chain_query(self):
"""Get a query object for the category chain.
The query retrieves the root category first and then all the
