scinote-web/db/migrate/20160803082801_add_experiment_to_report_elements.rb

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class AddExperimentToReportElements < ActiveRecord::Migration
def up
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add_column :report_elements, :experiment_id, :integer
add_foreign_key :report_elements, :experiments
add_index :report_elements, :experiment_id
Project.find_each do |project|
experiment = project.experiments.first
next unless experiment && project.reports.count > 0
project.reports.each do |report|
project_element = report.report_elements.where(type_of: 0).first
module_elements = report.report_elements.where(type_of: 1)
next unless project_element
experiment_element = report.report_elements.create(
type_of: :experiment,
experiment: experiment,
position: 0
)
next unless module_elements.count > 0
module_elements.each do |element|
element.parent_id = experiment_element.id
element.save!
end
end
end
end
def down
Project.find_each do |project|
next unless project.reports.count > 0
project.reports.each do |report|
experiment_elements = report.report_elements.where(type_of: 15)
module_elements = report.report_elements.where(type_of: 1)
next unless module_elements.count > 0
module_elements.each do |element|
element.parent_id = nil
element.save!
end
experiment_elements.destroy_all
end
end
remove_index :report_elements, :experiment_id
remove_foreign_key :report_elements, :experiments
remove_column :report_elements, :experiment_id
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end
end