Class: MinceMigrator::Deleter

Inherits:
Object
  • Object
show all
Defined in:
lib/mince_migrator/deleter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Deleter

Returns a new instance of Deleter.



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# File 'lib/mince_migrator/deleter.rb', line 10

def initialize(options)
  if options[:migration]
    @migration = options[:migration]
    @migration_name = Migrations::Name.new(migration.name)
  elsif options[:name]
    @migration_name = Migrations::Name.new(options[:name])
  end
  @name = migration_name.value
  @filename = migration_name.filename
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/mince_migrator/deleter.rb', line 8

def filename
  @filename
end

#migration ⇒ Object (readonly)

Returns the value of attribute migration.



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# File 'lib/mince_migrator/deleter.rb', line 8

def migration
  @migration
end

#migration_name ⇒ Object (readonly)

Returns the value of attribute migration_name.



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# File 'lib/mince_migrator/deleter.rb', line 8

def migration_name
  @migration_name
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/mince_migrator/deleter.rb', line 8

def name
  @name
end

Instance Method Details

#can_delete_migration? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mince_migrator/deleter.rb', line 26

def can_delete_migration?
  ::File.exists?(migration_path)
end

#delete_migration ⇒ Object 



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# File 'lib/mince_migrator/deleter.rb', line 21

def delete_migration
  ::FileUtils.rm(migration_path)
  ran_migration.delete if ran_migration
end

#migration_path ⇒ Object 



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# File 'lib/mince_migrator/deleter.rb', line 34

def migration_path
  ::File.join Config.migration_dir, filename
end

#ran_migration ⇒ Object 



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# File 'lib/mince_migrator/deleter.rb', line 38

def ran_migration
  @ran_migration ||= RanMigration.find_by_name(name)
end

#reasons_for_failure ⇒ Object 



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# File 'lib/mince_migrator/deleter.rb', line 30

def reasons_for_failure
  "Migration does not exist with name '#{name}'" unless can_delete_migration?
end