Class: ActiveRecord::DynamicFinderMatch

### Home Classes Methods

### In Files

- lib/active_record/dynamic_finder_match.rb

### Parent

Object

### Methods

- ::match
- ::new
- #bang?
- #creator?
- #finder?
- #instantiator?
- #save_method
- #save_record?

### Files

- README.rdoc

### Class/Module Index

Quicksearch

- ActiveRecord
- ActiveRecord::ActiveRecordError
- ActiveRecord::AdapterNotFound
- ActiveRecord::AdapterNotSpecified
- ActiveRecord::Aggregations
- ActiveRecord::Aggregations::ClassMethods
- ActiveRecord::AssociationTypeMismatch
- ActiveRecord::Associations
- ActiveRecord::Associations::ClassMethods
- ActiveRecord::AttributeAssignment
- ActiveRecord::AttributeAssignment::ClassMethods
- ActiveRecord::AttributeAssignmentError
- ActiveRecord::AttributeMethods
- ActiveRecord::AttributeMethods::BeforeTypeCast
- ActiveRecord::AttributeMethods::ClassMethods
- ActiveRecord::AttributeMethods::DeprecatedUnderscoreRead
- ActiveRecord::AttributeMethods::DeprecatedUnderscoreRead::ClassMethods
- ActiveRecord::AttributeMethods::Dirty
- ActiveRecord::AttributeMethods::PrimaryKey
- ActiveRecord::AttributeMethods::PrimaryKey::ClassMethods
- ActiveRecord::AttributeMethods::Query
- ActiveRecord::AttributeMethods::Read
- ActiveRecord::AttributeMethods::Read::ClassMethods
- ActiveRecord::AttributeMethods::Serialization
- ActiveRecord::AttributeMethods::Serialization::Attribute
- ActiveRecord::AttributeMethods::Serialization::ClassMethods
- ActiveRecord::AttributeMethods::TimeZoneConversion
- ActiveRecord::AttributeMethods::TimeZoneConversion::ClassMethods
- ActiveRecord::AttributeMethods::Write
- ActiveRecord::AttributeMethods::Write::ClassMethods
- ActiveRecord::AutosaveAssociation
- ActiveRecord::AutosaveAssociation::ClassMethods
- ActiveRecord::Base
- ActiveRecord::Batches
- ActiveRecord::Calculations
- ActiveRecord::Callbacks
- ActiveRecord::Coders
- ActiveRecord::ConfigurationError
- ActiveRecord::ConnectionAdapters
- ActiveRecord::ConnectionAdapters::AbstractAdapter
- ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter
- ActiveRecord::ConnectionAdapters::ConnectionHandler
- ActiveRecord::ConnectionAdapters::ConnectionManagement
- ActiveRecord::ConnectionAdapters::ConnectionPool
- ActiveRecord::ConnectionAdapters::DatabaseLimits
- ActiveRecord::ConnectionAdapters::DatabaseStatements
- ActiveRecord::ConnectionAdapters::Mysql2Adapter
- ActiveRecord::ConnectionAdapters::MysqlAdapter
- ActiveRecord::ConnectionAdapters::MysqlAdapter::StatementPool
- ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
- ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::StatementPool
- ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::TableDefinition
- ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::Utils
- ActiveRecord::ConnectionAdapters::PostgreSQLColumn
- ActiveRecord::ConnectionAdapters::QueryCache
- ActiveRecord::ConnectionAdapters::Quoting
- ActiveRecord::ConnectionAdapters::SQLiteAdapter
- ActiveRecord::ConnectionAdapters::SQLiteAdapter::ExplainPrettyPrinter
- ActiveRecord::ConnectionAdapters::SQLiteAdapter::StatementPool
- ActiveRecord::ConnectionAdapters::SQLiteAdapter::Version
- ActiveRecord::ConnectionAdapters::SchemaCache
- ActiveRecord::ConnectionAdapters::SchemaStatements
- ActiveRecord::ConnectionAdapters::StatementPool
- ActiveRecord::ConnectionAdapters::Table
- ActiveRecord::ConnectionAdapters::TableDefinition
- ActiveRecord::ConnectionNotEstablished
- ActiveRecord::ConnectionTimeoutError
- ActiveRecord::CounterCache
- ActiveRecord::DangerousAttributeError
- ActiveRecord::Delegation
- ActiveRecord::DynamicFinderMatch
- ActiveRecord::DynamicMatchers
- ActiveRecord::DynamicScopeMatch
- ActiveRecord::Explain
- ActiveRecord::FinderMethods
- ActiveRecord::Fixtures
- ActiveRecord::Fixtures::File
- ActiveRecord::Generators
- ActiveRecord::Generators::Migration
- ActiveRecord::Generators::MigrationGenerator
- ActiveRecord::Generators::ModelGenerator
- ActiveRecord::Generators::ObserverGenerator
- ActiveRecord::Generators::SessionMigrationGenerator
- ActiveRecord::IdentityMap
- ActiveRecord::IdentityMap::Middleware
- ActiveRecord::Inheritance
- ActiveRecord::Inheritance::ClassMethods
- ActiveRecord::Integration
- ActiveRecord::InvalidForeignKey
- ActiveRecord::IrreversibleMigration
- ActiveRecord::Locking
- ActiveRecord::Locking::Optimistic
- ActiveRecord::Locking::Optimistic::ClassMethods
- ActiveRecord::Locking::Pessimistic
- ActiveRecord::LogSubscriber
- ActiveRecord::Migration
- ActiveRecord::Migration::CommandRecorder
- ActiveRecord::MigrationProxy
- ActiveRecord::ModelSchema
- ActiveRecord::ModelSchema::ClassMethods
- ActiveRecord::MultiparameterAssignmentErrors
- ActiveRecord::NestedAttributes
- ActiveRecord::NestedAttributes::ClassMethods
- ActiveRecord::NestedAttributes::TooManyRecords
- ActiveRecord::Observer
- ActiveRecord::Persistence
- ActiveRecord::Persistence::ClassMethods
- ActiveRecord::PreparedStatementInvalid
- ActiveRecord::QueryCache
- ActiveRecord::QueryCache::ClassMethods
- ActiveRecord::QueryMethods
- ActiveRecord::Querying
- ActiveRecord::Railtie
- ActiveRecord::Railties
- ActiveRecord::Railties::ControllerRuntime
- ActiveRecord::Railties::ControllerRuntime::ClassMethods
- ActiveRecord::ReadOnlyRecord
- ActiveRecord::ReadonlyAttributes
- ActiveRecord::ReadonlyAttributes::ClassMethods
- ActiveRecord::RecordInvalid
- ActiveRecord::RecordNotFound
- ActiveRecord::RecordNotSaved
- ActiveRecord::RecordNotUnique
- ActiveRecord::Reflection
- ActiveRecord::Reflection::ClassMethods
- ActiveRecord::Reflection::MacroReflection
- ActiveRecord::Result
- ActiveRecord::Rollback
- ActiveRecord::Sanitization
- ActiveRecord::Sanitization::ClassMethods
- ActiveRecord::Schema
- ActiveRecord::Scoping
- ActiveRecord::Scoping::ClassMethods
- ActiveRecord::Scoping::Default
- ActiveRecord::Scoping::Default::ClassMethods
- ActiveRecord::Scoping::Named
- ActiveRecord::Scoping::Named::ClassMethods
- ActiveRecord::Serialization
- ActiveRecord::SerializationTypeMismatch
- ActiveRecord::SessionStore
- ActiveRecord::SessionStore::Session
- ActiveRecord::SessionStore::SqlBypass
- ActiveRecord::SpawnMethods
- ActiveRecord::StaleObjectError
- ActiveRecord::StatementInvalid
- ActiveRecord::Store
- ActiveRecord::Store::ClassMethods
- ActiveRecord::TestFixtures
- ActiveRecord::TestFixtures::ClassMethods
- ActiveRecord::ThrowResult
- ActiveRecord::Timestamp
- ActiveRecord::Transactions
- ActiveRecord::Transactions::ClassMethods
- ActiveRecord::Translation
- ActiveRecord::UnknownAttributeError
- ActiveRecord::UnknownPrimaryKey
- ActiveRecord::Validations
- ActiveRecord::Validations::AssociatedValidator
- ActiveRecord::Validations::ClassMethods
- ActiveRecord::Validations::UniquenessValidator
- ActiveRecord::WrappedDatabaseException
- Mysql
- Mysql::Result
- Mysql::Stmt
- Mysql::Time
- ArJdbcMySQL
- ArJdbcMySQL::Error

No matching classes.

# ActiveRecord::DynamicFinderMatch

# Active Record Dynamic Finder Match

Refer to ActiveRecord::Base documentation for Dynamic attribute-based finders for detailed info

### Attributes

attribute_names[R]
finder[R]
instantiator[R]

### Public Class Methods

match(method) click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 8
    def self.match(method)
      finder       = :first
      bang         = false
      instantiator = nil

      case method.to_s
      when /^find_(all_|last_)?by_([_a-zA-Z]\w*)$/
        finder = :last if $1 == 'last_'
        finder = :all if $1 == 'all_'
        names = $2
      when /^find_by_([_a-zA-Z]\w*)\!$/
        bang = true
        names = $1
      when /^find_or_create_by_([_a-zA-Z]\w*)\!$/
        bang = true
        instantiator = :create
        names = $1
      when /^find_or_(initialize|create)_by_([_a-zA-Z]\w*)$/
        instantiator = $1 == 'initialize' ? :new : :create
        names = $2
      else
        return nil
      end

      new(finder, instantiator, bang, names.split('_and_'))
    end

new(finder, instantiator, bang, attribute_names) click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 35
    def initialize(finder, instantiator, bang, attribute_names)
      @finder          = finder
      @instantiator    = instantiator
      @bang            = bang
      @attribute_names = attribute_names
    end

### Public Instance Methods

bang?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 56
    def bang?
      @bang
    end

creator?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 52
    def creator?
      @finder == :first && @instantiator == :create
    end

finder?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 44
    def finder?
      @finder && !@instantiator
    end

instantiator?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 48
    def instantiator?
      @finder == :first && @instantiator
    end

save_method() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 64
    def save_method
      bang? ? :save! : :save
    end

save_record?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 60
    def save_record?
      @instantiator == :create
    end

[Validate]

Generated with the Darkfish Rdoc Generator 2.