Add method to easily access a local target by code

Similar to what we do in goals and targets.

app/models/sdg/local_target.rb

@@ -17,6 +17,10 @@ class SDG::LocalTarget < ApplicationRecord
 
  belongs_to :target
 
+ def self.[](code)
+ find_by!(code: code)
+ end
+
  def <=>(any_target)
  if any_target.class == self.class
  [target, numeric_subcode] <=> [any_target.target, any_target.numeric_subcode]

spec/models/sdg/local_target_spec.rb

@@ -82,4 +82,16 @@
  expect(local_target).to be < greater_target
  end
  end
+
+ describe ".[]" do
+ it "finds existing local targets by code" do
+ create(:sdg_local_target, code: "1.1.1")
+
+ expect(SDG::LocalTarget["1.1.1"].code).to eq "1.1.1"
+ end
+
+ it "raises an exception for non-existing codes" do
+ expect { SDG::LocalTarget["1.1.99"] }.to raise_exception ActiveRecord::RecordNotFound
+ end
+ end
 end

spec/system/sdg_management/relations_spec.rb

@@ -168,11 +168,10 @@
  end
 
  scenario "local target filter" do
- schools = create(:sdg_local_target, code: "4.1.1")
- teachers = create(:sdg_local_target, code: "4.1.2")
-
- create(:debate, title: "Rebuild local schools", sdg_local_targets: [schools])
- create(:debate, title: "Hire teachers", sdg_local_targets: [teachers])
+ create(:sdg_local_target, code: "4.1.1")
+ create(:sdg_local_target, code: "4.1.2")
+ create(:debate, title: "Rebuild local schools", sdg_local_targets: [SDG::LocalTarget["4.1.1"]])
+ create(:debate, title: "Hire teachers", sdg_local_targets: [SDG::LocalTarget["4.1.2"]])
 
  visit sdg_management_debates_path
  select "4.1.1", from: "target_code"