Class: SexyPgConstraints::Deconstrainer

Inherits:
Object
  • Object
show all
Extended by:
Helpers
Defined in:
lib/sexy_pg_constraints/constrainers/deconstrainer.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Helpers

execute, make_title

Constructor Details

#initialize(table, columns = []) ⇒ Deconstrainer

Returns a new instance of Deconstrainer.



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# File 'lib/sexy_pg_constraints/constrainers/deconstrainer.rb', line 7

def initialize(table, columns = [])
  @table = table.to_s
  @columns = columns
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(column, *constraints) ⇒ Object 



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# File 'lib/sexy_pg_constraints/constrainers/deconstrainer.rb', line 12

def method_missing(column, *constraints)
  self.class.drop_constraints(@table, column.to_s, *constraints)
end

Class Method Details

.drop_constraints(table, column, *constraints) ⇒ Object 



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# File 'lib/sexy_pg_constraints/constrainers/deconstrainer.rb', line 26

def drop_constraints(table, column, *constraints)
  constraints.each do |type|
    execute "alter table #{table} drop constraint #{make_title(table, column, type)};"
  end
end

Instance Method Details

#[](*columns) ⇒ Object 



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# File 'lib/sexy_pg_constraints/constrainers/deconstrainer.rb', line 16

def [](*columns)
  @columns = columns.map{|c| c.to_s}
  self
end

#all(*constraints) ⇒ Object 



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# File 'lib/sexy_pg_constraints/constrainers/deconstrainer.rb', line 21

def all(*constraints)
  self.class.drop_constraints(@table, @columns, *constraints)
end