module ActionController::ParameterEncoding::ClassMethods

:nodoc:

def action_encoding_template(action) # :nodoc:
  if @_parameter_encodings.has_key?(action.to_s)
    @_parameter_encodings[action.to_s]
  end
end

:nodoc:

def inherited(klass) # :nodoc:
  super
  klass.setup_param_encode
end

but encoding of the data is unknown, like file system data.
This is useful in the case where an application must handle data
but all other arguments will remain UTF-8 encoded.
The file_path parameter on the show action would be encoded as ASCII-8BIT,

end
end
@repositories = Repository.all
def index

end
@repo_name = params[:repo_name]
# params[:repo_name] remains UTF-8 encoded

@repo = Repository.find_by_filesystem_path params[:file_path]
def show

param_encoding :show, :file_path, Encoding::ASCII_8BIT
# This specifies that file_path is not UTF-8 and is instead ASCII_8BIT
class RepositoryController < ActionController::Base

You can specify a binary (ASCII_8BIT) parameter with:

If not specified the default is UTF-8.
Specify the encoding for a parameter on an action.

def param_encoding(action, param, encoding)
  @_parameter_encodings[action.to_s][param.to_s] = encoding
end

:nodoc:

def setup_param_encode # :nodoc:
  @_parameter_encodings = Hash.new { |h, k| h[k] = {} }
end

must handle data but encoding of the data is unknown, like file system data.
encoded as ASCII-8BIT. This is useful in the case where an application
The show action in the above controller would have all parameter values

end
end
@repositories = Repository.all
def index

end
@repo_name = params[:repo_name].force_encoding 'UTF-8'
# tag it as such
# `repo_name` is guaranteed to be UTF-8, but was ASCII-8BIT, so

@repo = Repository.find_by_filesystem_path params[:file_path]
def show

skip_parameter_encoding :show
class RepositoryController < ActionController::Base

For example, a controller would use it like this:

ASCII-8BIT (it "skips" the encoding default of UTF-8).
Specify that a given action's parameters should all be encoded as

def skip_parameter_encoding(action)
  @_parameter_encodings[action.to_s] = Hash.new { Encoding::ASCII_8BIT }
end