Hi all,
I use Sequel to model two tables using a one_to_many association:
class Node < Sequel::Model
one_to_many :node_data
end
class NodeDatum < Sequel::Model
many_to_one :node
end
And I get data from the DB using the following Sequel call:
results = Node.where(:name=>name)
.eager_graph(:node_data)
.order(:id).all.map { |a| a.values.merge(:node_data=>a.node_data.map{|al|
al.values}) }
Also, next to the default columns from the nodes table, I need an extra
column computed by a DB function:
Node.select_append(Sequel.function(:collect_member_geometries, :members))
However, I need the extra column and function call together with the
eager_graph join, but when I try to do this, the extra column seems to get
lost after the join.
results = Node.where(:name=>name)
.eager_graph(:node_data)
.select_append(Sequel.function(:collect_member_geometries, :members))
.order(:id).all.map { |a| a.values.merge(:node_data=>a.node_data.map{|al|
al.values}) }
Now the extra column (outcome of collect_member_geometries DB function) is
not to be found in results.
Does anyone know what I am doing wrong or what I should change to make this
work?
Many thanks,
Bert Spaan
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