Module | Sequel::Plugins::Schema::ClassMethods |
In: |
lib/sequel/plugins/schema.rb
|
Creates table, using the column information from set_schema.
# File lib/sequel/plugins/schema.rb, line 22 22: def create_table(*args, &block) 23: set_schema(*args, &block) if block_given? 24: db.create_table(table_name, :generator=>@schema) 25: @db_schema = get_db_schema(true) 26: columns 27: end
Drops the table if it exists and then runs create_table. Should probably not be used except in testing.
# File lib/sequel/plugins/schema.rb, line 31 31: def create_table!(*args, &block) 32: drop_table rescue nil 33: create_table(*args, &block) 34: end
Creates the table unless the table already exists
# File lib/sequel/plugins/schema.rb, line 37 37: def create_table?(*args, &block) 38: create_table(*args, &block) unless table_exists? 39: end
Drops table.
# File lib/sequel/plugins/schema.rb, line 42 42: def drop_table 43: db.drop_table(table_name) 44: end
Returns table schema created with set_schema for direct descendant of Model. Does not retreive schema information from the database, see db_schema if you want that.
# File lib/sequel/plugins/schema.rb, line 49 49: def schema 50: @schema || (superclass.schema unless superclass == Model) 51: end
Defines a table schema (see Schema::Generator for more information).
This is only needed if you want to use the create_table/create_table! methods. Will also set the dataset if you provide a name, as well as setting the primary key if you defined one in the passed block.
In general, it is a better idea to use migrations for production code, as migrations allow changes to existing schema. set_schema is mostly useful for test code or simple examples.
# File lib/sequel/plugins/schema.rb, line 62 62: def set_schema(name = nil, &block) 63: set_dataset(db[name]) if name 64: @schema = Sequel::Schema::Generator.new(db, &block) 65: set_primary_key(@schema.primary_key_name) if @schema.primary_key_name 66: end