Class: Nandi::Validation::AddColumnValidator

Inherits:
Object
  • Object
show all
Includes:
FailureHelpers
Defined in:
lib/nandi/validation/add_column_validator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FailureHelpers

#assert, #collect_errors, #failure, #success

Constructor Details

#initialize(instruction) ⇒ AddColumnValidator 



14
15
16
 
# File 'lib/nandi/validation/add_column_validator.rb', line 14

def initialize(instruction)
  @instruction = instruction
end

Instance Attribute Details

#instruction ⇒ Object (readonly)

Returns the value of attribute instruction.



26
27
28
 
# File 'lib/nandi/validation/add_column_validator.rb', line 26

def instruction
  @instruction
end

Class Method Details

.call(instruction) ⇒ Object 



10
11
12
 
# File 'lib/nandi/validation/add_column_validator.rb', line 10

def self.call(instruction)
  new(instruction).call
end

Instance Method Details

#call ⇒ Object 



18
19
20
21
22
23
24
 
# File 'lib/nandi/validation/add_column_validator.rb', line 18

def call
  collect_errors(
    assert(nullable? || default_value?,
           "add_column: non-null column lacks default"),
    assert(!unique?, "add_column: column is unique"),
  )
end