class DataMigrate::SchemaMigration

Helper class to getting access to db schema to allow data/schema combiation tasks

Public Class Methods

migrations_paths() click to toggle source
# File lib/data_migrate/schema_migration.rb, line 25
def self.migrations_paths
  spec_name = DataMigrate.config.spec_name
  # The positional argument true is to include pre-release versions, such as 7.1.0.alpha
  if spec_name && Gem::Dependency.new("railties", ">= 7.0").match?("railties", Gem.loaded_specs["railties"].version, true)
    ActiveRecord::Base.configurations.configs_for(env_name: Rails.env, name: spec_name).migrations_paths
  elsif spec_name && Gem::Dependency.new("railties", "~> 6.1").match?("railties", Gem.loaded_specs["railties"].version)
    ActiveRecord::Base.configurations.configs_for(env_name: Rails.env, spec_name: spec_name).migrations_paths
  else
    Rails.application.config.paths["db/migrate"].to_a
  end
end
pending_schema_migrations() click to toggle source
# File lib/data_migrate/schema_migration.rb, line 7
def self.pending_schema_migrations
  all_migrations = DataMigrate::MigrationContext.new(migrations_paths).migrations
  sort_migrations(
    ActiveRecord::Migrator.new(:up, all_migrations, DataMigrate::RailsHelper.schema_migration, DataMigrate::RailsHelper.internal_metadata).
    pending_migrations.
    map {|m| { version: m.version, kind: :schema }}
  )
end
run(direction, migration_paths, version) click to toggle source
# File lib/data_migrate/schema_migration.rb, line 16
def self.run(direction, migration_paths, version)
  ActiveRecord::MigrationContext.new(migration_paths, DataMigrate::RailsHelper.schema_migration).run(direction, version)
end
sort_migrations(set1, set2 = nil) click to toggle source
# File lib/data_migrate/schema_migration.rb, line 20
def self.sort_migrations(set1, set2 = nil)
  migrations = set1 + (set2 || [])
  migrations.sort {|a, b|  sort_string(a) <=> sort_string(b)}
end
sort_string(migration) click to toggle source
# File lib/data_migrate/schema_migration.rb, line 37
def self.sort_string(migration)
  "#{migration[:version]}_#{migration[:kind] == :data ? 1 : 0}"
end