Class: ForceSchema::Schema

Inherits:
Object
  • Object
show all
Includes:
Blockenspiel::DSL
Defined in:
lib/force_schema/schema.rb

Constant Summary collapse

MAX_INDEX_NAME_LENGTH =

mysql

32

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(active_record) ⇒ Schema

Returns a new instance of Schema.



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# File 'lib/force_schema/schema.rb', line 26

def initialize(active_record)
  @active_record = active_record
end

Instance Attribute Details

#active_record ⇒ Object (readonly)

Returns the value of attribute active_record.



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# File 'lib/force_schema/schema.rb', line 23

def active_record
  @active_record
end

#create_table_options ⇒ Object

Returns the value of attribute create_table_options.



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# File 'lib/force_schema/schema.rb', line 24

def create_table_options
  @create_table_options
end

Class Method Details

.suggest_index_name(active_record, columns, index_options = {}) ⇒ Object 



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# File 'lib/force_schema/schema.rb', line 10

def suggest_index_name(active_record, columns, index_options = {})
  return index_options[:name] if index_options.has_key? :name
  default_name = 'index_' + ::Array.wrap(columns).join('_and_') #active_record.connection.index_name(active_record.table_name, index_options.merge(:column => columns))
  if default_name.length < MAX_INDEX_NAME_LENGTH
    default_name
  else
    default_name[0..MAX_INDEX_NAME_LENGTH-11] + ::Zlib.crc32(default_name).to_s
  end
end

Instance Method Details

#index(columns, index_options = {}) ⇒ Object 



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# File 'lib/force_schema/schema.rb', line 52

def index(columns, index_options = {})
  index_options = index_options.symbolize_keys
  columns = ::Array.wrap columns
  index_name = Schema.suggest_index_name active_record, columns, index_options
  index_unique = index_options.has_key?(:unique) ? index_options[:unique] : true
  ideal_indexes.push ::ActiveRecord::ConnectionAdapters::IndexDefinition.new(table_name, index_name, index_unique, columns)
  nil
end

#run ⇒ Object 



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# File 'lib/force_schema/schema.rb', line 61

def run
  _create_table
  _set_primary_key
  _remove_columns
  _add_columns
  _remove_indexes
  _add_indexes
  nil
end