Bugfix support for multiple parents for plate creation

app/models/plate/creator.rb

@@ -30,7 +30,7 @@ def can_create_plates?(source_plate, plate_purposes)
       plate_purposes.include?(r.plate_purpose)
     end.map(&:parent_purpose).uniq.compact
 
-    parent_purposes.empty? || parent_purposes.all? {|p| p==source_plate.purpose}
+    parent_purposes.empty? || parent_purposes.any? {|p| p==source_plate.purpose}
   end
 
   # Executes the plate creation so that the appropriate child plates are built.
@@ -68,7 +68,7 @@ def create_plates(source_plate_barcodes, current_user)
 
   def create_child_plates_from(plate, current_user)
     stock_well_picker = plate.plate_purpose.can_be_considered_a_stock_plate? ? lambda { |w| [w] } : lambda { |w| w.stock_wells }
-    plate_purposes.map do |target_plate_purpose|
+    plate_purposes.select{|p| p.parent_purpose==plate.purpose}.map do |target_plate_purpose|
       target_plate_purpose.target_plate_type.constantize.create_with_barcode!(plate.barcode) do |child_plate|
         child_plate.plate_purpose = target_plate_purpose
         child_plate.size          = plate.size

db/migrate/20150629112016_add_wd_ch_to_pd_plate_creation.rb

@@ -0,0 +1,14 @@
+class AddWdChToPdPlateCreation < ActiveRecord::Migration
+  def self.up
+    ActiveRecord::Base.transaction do
+      Plate::Creator::PurposeRelationship.create!({
+        :plate_creator => Plate::Creator.find_by_name!("Pico Dilution"),
+        :plate_purpose => Purpose.find_by_name!("Pico Dilution"),
+        :parent_purpose => Purpose.find_by_name!("Cherrypicked Working Dilution")
+      })
+    end
+  end
+
+  def self.down
+  end
+end

db/schema.rb

@@ -1,4 +1,4 @@
-# This file is auto-generated from the current state of the database. Instead of editing this file,
+# This file is auto-generated from the current state of the database. Instead of editing this file, 
 # please use the migrations feature of Active Record to incrementally modify your database, and
 # then regenerate this schema definition.
 #
@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20150623152205) do
+ActiveRecord::Schema.define(:version => 20150629112016) do
 
   create_table "aliquots", :force => true do |t|
     t.integer  "receptacle_id",    :null => false

db/seeds/0001_snp_plate_purposes.rb

@@ -414,3 +414,13 @@
   :asset_shape => Map::AssetShape.find_by_name('Standard'),
   :barcode_for_tecan => 'ean13_barcode'
 )
+PlatePurpose.create!(
+  :name=>'Cherrypicked Working Dilution',
+  :default_state=>'pending',
+  :barcode_printer_type=>BarcodePrinterType.find_by_name('96 Well Plate'),
+  :cherrypickable_target => true,
+  :cherrypickable_source => false,
+  :size => 96,
+  :asset_shape => Map::AssetShape.find_by_name('Standard'),
+  :barcode_for_tecan => 'ean13_barcode'
+)

features/create_plates.feature

@@ -83,10 +83,11 @@ Feature: Printing new plate barcodes
     And I should be on the new plate page
 
     Examples:
-      | plate_purpose         | parent_plate_purpose |
-      | Working dilution      | Stock Plate          |
-      | Pico dilution         | Working dilution     |
-      | Pico Assay Plates     | Pico dilution        |
+      | plate_purpose         | parent_plate_purpose            |
+      | Working dilution      | Stock Plate                     |
+      | Pico dilution         | Working dilution                |
+      | Pico dilution         | Cherrypicked Working Dilution   |
+      | Pico Assay Plates     | Pico dilution                   |
 
   @xml @qc_event
   Scenario: Create all QC plates for SLF