class Avram::Migrator::AlterTableStatement

• Avram::Migrator::AlterTableStatement
• Reference
• Object

Included Modules

• Avram::Migrator::IndexStatementHelpers
• Avram::Migrator::MissingOnDeleteWithBelongsToError

Defined in:

Constructors

• .new(table_name : Symbol)

Instance Method Summary

• #add_change_type_statement(column : Avram::Migrator::Columns::Base)
• #add_fill_existing_with_statements(column : Symbol | String, type, value)
• #alter_statements : Array(String)
• #build(&)

  Accepts a block to alter a table using the add method.

• #change_type_statements : Array(String)
• #dropped_rows : Array(String)
• #fill_existing_with_statements : Array(String)
• #remove(name : Symbol)
• #rows : Array(String)
• #statements

Macro Summary

• add(type_declaration, index = false, using = :btree, unique = false, default = nil, fill_existing_with = nil, **type_options)
• add_belongs_to(type_declaration, on_delete, references = nil, foreign_key_type = Int64)

  Adds a references column and index given a model class and references option.

• change_type(type_declaration, **type_options)
• remove_belongs_to(association_name)

Constructor Detail

Instance Method Detail

built = Avram::Migrator::AlterTableStatement.new(:users).build do
  add name : String
  add age : Int32
  remove old_field
end

built.statements
# => [
"ALTER TABLE users
  ADD name text NOT NULL,
  ADD age int NOT NULL,
  DROP old_field"
]

Macro Detail