I have the following tables:
create_table(:tours) do
primary_key :id
String :group_type, :null => false
String :group_name
String :group_fname, :null => false
String :group_lname, :null => false, :index => true
String :group_email, :null => false
String :group_phone, :null => false
end
create_table(:guides) do
primary_key :id
String :guide_name
String :guide_email
boolean :guide_notify, :default => false
end
create_table(:tours_guides) do
foreign_key :guide_id, :guides, key: :id
foreign_key :tour_id, :tours, key: :id
index [:guide_id, :tour_id], :unique => true
end
#classes.rb
class Tour < Sequel::Model(:tours)
many_to_many :guides
end
class Guide < Sequel::Model(:guides)
many_to_many :tours
end
In plain English, a Tour can have more than one guide, and Guides can be
assigned to many tours.
In general, this works. I can do something like Tour[1].guides and get a
list of guides without issue. I can also do Guide[1].tours and see the
reciprocal.
Here's what I am trying to do that is causing me trouble: I need a list of
all tours, with the guide names grouped together in one record.
# Query
DB[:tours].left_join(:guides).select(:forms__id, :guides__guide_name).all
# Result
[{:id=>1, :guide_name=>"Elanor"}, {:id=>1, :guide_name=>"Test"}]
# Expected Result
[{:id=>1, :guide_name=>["Elanor", "Test"]}]
If it helps, I'm trying to get this in one query with the guide names
nested with their tours so its easy to convert the whole shebang to JSON.
Thank you!
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