Class: Genesis::Seeder

Inherits:
Object
  • Object
show all
Defined in:
lib/genesis/seeder.rb

Class Method Summary collapse

Class Method Details

.empty_revisions_table ⇒ Object

Deletes all records from the schema_seeds table.



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# File 'lib/genesis/seeder.rb', line 20

def self.empty_revisions_table
  if seed_version_table_exists?
    load_schema_seed_model
    SchemaSeed.delete_all
  end
end

.get_current_version ⇒ Object

Returns the current seed version from the schema_seeds table.



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# File 'lib/genesis/seeder.rb', line 29

def self.get_current_version
  return 'No seed version table exists.  Assuming seed version is 0.' unless seed_version_table_exists?
  load_schema_seed_model
  determine_current_version
  return @current_version
end

.load_schema_seed_model ⇒ Object 



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# File 'lib/genesis/seeder.rb', line 3

def self.load_schema_seed_model
  load( File.join(File.expand_path(File.dirname(__FILE__)), 'schema_seed.rb') )
end

.run(seeds = [], to_version = nil, ignores = []) ⇒ Object

Runs the migration process.



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# File 'lib/genesis/seeder.rb', line 44

def self.run( seeds=[], to_version=nil, ignores=[] )
  ignores << 'genesis_callbacks.rb'
  @separator_size = 95
  determine_current_version
  map_versions( seeds, ignores )
  raise 'There are no seeds to execute.' if @versions_map.empty?
  to_version = determine_to_version( to_version )
  determine_and_prepare_seed_direction( to_version )
  if @to_run.empty?
    puts "The requested seed version (#{to_version}) resulted in no necessary seeding.  Data is up to date."
    return
  end
  run_seeds
end

.seed_version_table_exists? ⇒ Boolean

Checks if the schema_seeds table exists.

Returns:

  • (Boolean) 


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# File 'lib/genesis/seeder.rb', line 38

def self.seed_version_table_exists?
  ActiveRecord::Base.connection.tables.include?( 'schema_seeds' )
end

.verify_or_create_version_table ⇒ Object

Verifies that the schema_seeds table exists creating if if it does not exist.



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# File 'lib/genesis/seeder.rb', line 9

def self.verify_or_create_version_table
  unless seed_version_table_exists?
    load( File.join(File.expand_path(File.dirname(__FILE__)), 'create_schema_seeds.rb') )
    Genesis::CreateSchemaSeeds.up
  end

  load_schema_seed_model
end