Exception Handler in Rails => https://git.io/fjZIW

exception_handler.rb

module ExceptionHandler
  extend ActiveSupport::Concern

  included do
    rescue_from ActionController::Base,
                ActionController::API,
                # ActionController::Middleware,
                ActionController::Streaming,
                ActionController::LogSubscriber,
                ActionController::TestCase,
                ActionController::Railties,
                ActionController::Railtie,
                ActionController::MiddlewareStack,
                ActionController::Cookies,
                ActionController::ContentSecurityPolicy,
                ActionController::Flash,
                ActionController::Parameters,
                ActionController::ConditionalGet,
                ActionController::Head,
                ActionController::Helpers,
                ActionController::Metal,
                ActionController::Renderer,
                ActionController::FormBuilder,
                ActionController::Caching,
                ActionController::DataStreaming,
                ActionController::EtagWithTemplateDigest,
                ActionController::EtagWithFlash,
                ActionController::ForceSSL,
                ActionController::HttpAuthentication,
                ActionController::BasicImplicitRender,
                ActionController::ImplicitRender,
                ActionController::Instrumentation,
                ActionController::MimeResponds,
                ActionController::ParamsWrapper,
                ActionController::Redirecting,
                ActionController::Renderers,
                ActionController::Rendering,
                ActionController::RequestForgeryProtection,
                ActionController::Rescue,
                ActionController::StrongParameters,
                ActionController::ParameterEncoding,
                ActionController::Testing,
                ActionController::UrlFor,
                ActionController::ApiRendering,
                ActionController::TemplateAssertions,
                ActionController::Live,
                ActionController::ParameterMissing,
                ActionController::UnpermittedParameters,
                ActionController::UnfilteredParameters,
                ActionController::BadRequest,
                ActionController::MethodNotAllowed,
                ActionController::NotImplemented,
                ActionController::RoutingError,
                ActionController::UrlGenerationError,
                ActionController::ActionControllerError,
                ActionController::RenderError,
                ActionController::MissingFile,
                ActionController::SessionOverflowError,
                ActionController::UnknownHttpMethod,
                ActionController::UnknownFormat,
                ActionController::MissingRenderer,
                ActionController::InvalidAuthenticityToken,
                ActionController::InvalidCrossOriginRequest do |e|
      api({ message: e.message }, 500)
    end

    rescue_from ActiveRecord::Migrator,
                ActiveRecord::NoDatabaseError,
                ActiveRecord::QueryCache,
                ActiveRecord::MigrationContext,
                ActiveRecord::LogSubscriber,
                ActiveRecord::InternalMetadata,
                ActiveRecord::RecordInvalid,
                ActiveRecord::RuntimeRegistry,
                ActiveRecord::Schema,
                ActiveRecord::SchemaDumper,
                ActiveRecord::SchemaMigration,
                ActiveRecord::StatementCache,
                ActiveRecord::ActiveRecordError,
                ActiveRecord::ConnectionNotEstablished,
                ActiveRecord::Relation,
                ActiveRecord::AssociationRelation,
                ActiveRecord::Result,
                ActiveRecord::PredicateBuilder,
                ActiveRecord::TableMetadata,
                ActiveRecord::DuplicateMigrationVersionError,
                ActiveRecord::DuplicateMigrationNameError,
                ActiveRecord::MigrationError,
                ActiveRecord::IrreversibleMigration,
                ActiveRecord::PendingMigrationError,
                ActiveRecord::ConfigurationError,
                ActiveRecord::IllegalMigrationNameError,
                ActiveRecord::NoEnvironmentInSchemaError,
                ActiveRecord::ConcurrentMigrationError,
                ActiveRecord::EnvironmentMismatchError,
                ActiveRecord::UnknownMigrationVersionError,
                ActiveRecord::ProtectedEnvironmentError,
                ActiveRecord::Railtie,
                ActiveRecord::ExplainRegistry,
                ActiveRecord::HasManyThroughAssociationPointlessSourceTypeError,
                ActiveRecord::AssociationNotFoundError,
                ActiveRecord::InverseOfAssociationNotFoundError,
                ActiveRecord::StatementInvalid,
                ActiveRecord::ExplainSubscriber,
                ActiveRecord::HasManyThroughOrderError,
                ActiveRecord::ThroughCantAssociateThroughHasOneOrManyReflection,
                ActiveRecord::HasManyThroughAssociationPolymorphicSourceError,
                ActiveRecord::AmbiguousSourceReflectionForThroughAssociation,
                ActiveRecord::HasManyThroughAssociationPolymorphicThroughError,
                ActiveRecord::ConnectionTimeoutError,
                ActiveRecord::ExclusiveConnectionTimeoutError,
                ActiveRecord::HasOneAssociationPolymorphicThroughError,
                ActiveRecord::HasManyThroughSourceAssociationNotFoundError,
                ActiveRecord::HasManyThroughNestedAssociationsAreReadonly,
                ActiveRecord::HasOneThroughNestedAssociationsAreReadonly,
                ActiveRecord::HasManyThroughAssociationNotFoundError,
                ActiveRecord::DeleteRestrictionError,
                ActiveRecord::HasManyThroughCantAssociateThroughHasOneOrManyReflection,
                ActiveRecord::HasOneThroughCantAssociateThroughCollection,
                ActiveRecord::ThroughNestedAssociationsAreReadonly,
                ActiveRecord::EagerLoadPolymorphicError,
                ActiveRecord::HasOneThroughCantAssociateThroughHasOneOrManyReflection,
                ActiveRecord::MigrationProxy,
                ActiveRecord::NullMigration,
                ActiveRecord::SuppressorRegistry,
                ActiveRecord::Rollback,
                ActiveRecord::TransactionIsolationError,
                ActiveRecord::DangerousAttributeError,
                ActiveRecord::UnknownAttributeReference,
                ActiveRecord::UnknownAttributeError,
                ActiveRecord::SubclassNotFound,
                ActiveRecord::AssociationTypeMismatch,
                ActiveRecord::SerializationTypeMismatch,
                ActiveRecord::AdapterNotSpecified,
                ActiveRecord::AdapterNotFound,
                ActiveRecord::RecordNotFound,
                ActiveRecord::RecordNotSaved,
                ActiveRecord::RecordNotDestroyed,
                ActiveRecord::WrappedDatabaseException,
                ActiveRecord::RecordNotUnique,
                ActiveRecord::InvalidForeignKey,
                ActiveRecord::MismatchedForeignKey,
                ActiveRecord::NotNullViolation,
                ActiveRecord::ValueTooLong,
                ActiveRecord::PreparedStatementInvalid,
                ActiveRecord::PreparedStatementCacheExpired,
                ActiveRecord::StaleObjectError,
                ActiveRecord::ReadOnlyRecord,
                ActiveRecord::AttributeAssignmentError,
                ActiveRecord::MultiparameterAssignmentErrors,
                ActiveRecord::UnknownPrimaryKey,
                ActiveRecord::ImmutableRelation,
                ActiveRecord::TransactionRollbackError,
                ActiveRecord::SerializationFailure,
                ActiveRecord::Deadlocked,
                ActiveRecord::IrreversibleOrderError,
                ActiveRecord::LockWaitTimeout,
                ActiveRecord::StatementTimeout,
                ActiveRecord::QueryCanceled,
                ActiveRecord::Base,
                ActiveRecord::TypeConflictError,
                ActiveRecord::RangeError,
                ActiveRecord::Migration do |e|
      api({ message: e.message }, 500)
    end
  end
end