Module: Dcmgr::Models::InheritableSchema::ClassMethods

Defined in:
lib/dcmgr/models/base_new.rb

Instance Method Summary collapse

Instance Method Details

#create_table ⇒ Object

Creates table, using the column information from set_schema.



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# File 'lib/dcmgr/models/base_new.rb', line 225

def create_table
  db.create_table(table_name, :generator=>schema)
  @db_schema = get_db_schema(true)
  columns
end

#create_table! ⇒ Object

Drops the table if it exists and then runs create_table. Should probably not be used except in testing.



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# File 'lib/dcmgr/models/base_new.rb', line 234

def create_table!
  drop_table rescue nil
  create_table
end

#create_table? ⇒ Boolean

Creates the table unless the table already exists

Returns:

  • (Boolean) 


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# File 'lib/dcmgr/models/base_new.rb', line 240

def create_table?
  create_table unless table_exists?
end

#drop_table ⇒ Object

Drops table.



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# File 'lib/dcmgr/models/base_new.rb', line 245

def drop_table
  db.drop_table(table_name)
end

#inheritable_schema(name = nil, &blk) ⇒ Object 



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# File 'lib/dcmgr/models/base_new.rb', line 279

def inheritable_schema(name=nil, &blk)
  set_dataset(db[name || implicit_table_name])
  self.schema_builders << blk
end

#schema ⇒ Object 



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# File 'lib/dcmgr/models/base_new.rb', line 254

def schema
  builders = []
  c = self
  begin
    builders << c.schema_builders if c.respond_to?(:schema_builders)
  end while((c = c.superclass) && c != Sequel::Model)
  
  builders = builders.reverse.flatten
  builders.delete(nil)

  schema = Sequel::Schema::Generator.new(db) {
    primary_key :id, Integer, :null=>false, :unsigned=>true
  }
  builders.each { |blk|
    schema.instance_eval(&blk)
  }
  set_primary_key(schema.primary_key_name) if schema.primary_key_name
  
  schema
end

#schema_builders ⇒ Object 



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# File 'lib/dcmgr/models/base_new.rb', line 275

def schema_builders
  @schema_builders ||= []
end

#table_exists? ⇒ Boolean

Returns true if table exists, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/dcmgr/models/base_new.rb', line 250

def table_exists?
  db.table_exists?(table_name)
end