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Class: ActiveRecord::ConnectionAdapters::PostgreSQL::Table

Overview

Active Record PostgreSQL Adapter Table

Class Method Summary

Instance Attribute Summary

Instance Method Summary

ColumnMethods - Included

::ActiveRecord::ConnectionAdapters::Table - Inherited

#belongs_to

Alias for Table#references.

#blob,
#change

Changes the column’s definition according to the new options.

#change_default

Sets a new default value for a column.

#change_null

Sets or removes a NOT NULL constraint on a column.

#check_constraint

Adds a check constraint.

#check_constraint_exists?

Checks if a check_constraint exists on a table.

#column

Adds a new column to the named table.

#column_exists?

Checks to see if a column exists.

#foreign_key

Adds a foreign key to the table using a supplied table name.

#foreign_key_exists?

Checks to see if a foreign key exists.

#index

Adds a new index to the table.

#index_exists?

Checks to see if an index exists.

#numeric,
#references

Adds a reference.

#remove

Removes the column(s) from the table definition.

#remove_belongs_to
#remove_check_constraint

Removes the given check constraint from the table.

#remove_foreign_key

Removes the given foreign key from the table.

#remove_index

Removes the given index from the table.

#remove_references

Removes a reference.

#remove_timestamps

Removes the timestamp columns (created_at and updated_at) from the table.

#rename

Renames a column.

#rename_index

Renames the given index on the table.

#timestamps

Adds timestamps (created_at and updated_at) columns to the table.

::ActiveRecord::ConnectionAdapters::ColumnMethods - Included

#column

Appends a column or columns of a specified type.

#primary_key

Appends a primary key definition to the table definition.

Constructor Details

This class inherits a constructor from ActiveRecord::ConnectionAdapters::Table

Instance Method Details

#exclusion_constraint(*args)

Adds an exclusion constraint.

t.exclusion_constraint("price WITH =, availability_range WITH &&", using: :gist, name: "price_check")

See connection.add_exclusion_constraint

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 305

def exclusion_constraint(*args)
  @base.add_exclusion_constraint(name, *args)
end

#remove_exclusion_constraint(*args)

Removes the given exclusion constraint from the table.

t.remove_exclusion_constraint(name: "price_check")

See connection.remove_exclusion_constraint

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 314

def remove_exclusion_constraint(*args)
  @base.remove_exclusion_constraint(name, *args)
end

#remove_unique_constraint(*args)

Removes the given unique constraint from the table.

t.remove_unique_constraint(name: "unique_position")

See connection.remove_unique_constraint

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 332

def remove_unique_constraint(*args)
  @base.remove_unique_constraint(name, *args)
end

#unique_constraint(*args)

Adds a unique constraint.

t.unique_constraint(:position, name: 'unique_position', deferrable: :deferred)

See connection.add_unique_constraint

[ GitHub ]

  
# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 323

def unique_constraint(*args)
  @base.add_unique_constraint(name, *args)
end