Class: Sunspot::Field::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/sunspot/field.rb

Overview

Field classes encapsulate information about a field that has been configured for search and indexing. They expose methods that are useful for both operations.

Subclasses of Field::Base must implement the method #value_for

Direct Known Subclasses

AttributeField, VirtualField

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, options = {}) ⇒ Base

:nodoc

Raises:

  • (ArgumentError) 


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# File 'lib/sunspot/field.rb', line 14

def initialize(name, type, options = {}) #:nodoc
  @name, @type = name.to_sym, type
  @multiple = options.delete(:multiple)
  raise ArgumentError, "Unknown field option #{options.keys.first.inspect} provided for field #{name.inspect}" unless options.empty?
end

Instance Attribute Details

#name ⇒ Object

The public-facing name of the field



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# File 'lib/sunspot/field.rb', line 11

def name
  @name
end

#type ⇒ Object

The Type of the field



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# File 'lib/sunspot/field.rb', line 12

def type
  @type
end

Instance Method Details

#cast(value) ⇒ Object

Cast the value into the appropriate Ruby class for the field’s type

Parameters

value<String>

Solr’s representation of the value

Returns

Object

The cast value



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# File 'lib/sunspot/field.rb', line 90

def cast(value)
  type.cast(value)
end

#indexed_name ⇒ Object

The name of the field as it is indexed in Solr. The indexed name contains a suffix that contains information about the type as well as whether the field allows multiple values for a document.

Returns

String

The field’s indexed name



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# File 'lib/sunspot/field.rb', line 48

def indexed_name
  "#{type.indexed_name(name)}#{'m' if multiple?}"
end

#multiple? ⇒ Boolean

Returns

Boolean

true if the field allows multiple values; false if not



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# File 'lib/sunspot/field.rb', line 97

def multiple?
  !!@multiple
end

#pair_for(model) ⇒ Object

A key-value pair where the key is the field’s indexed name and the value is the value that should be indexed for the given model. This can be merged directly into the document hash for adding to solr-ruby.

Parameters

model<Object>

the model from which to extract the value

Returns

Hash

a single key-value pair with the field name and value



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# File 'lib/sunspot/field.rb', line 32

def pair_for(model)
  unless (value = value_for(model)).nil?
    { indexed_name.to_sym => to_indexed(value) }
  else
    {}
  end
end

#to_indexed(value) ⇒ Object

Convert a value to its representation for Solr indexing. This delegates to the #to_indexed method on the field’s type.

Parameters

value<Object>

Value to convert to Solr representation

Returns

String

Solr representation of the object

Raises

ArgumentError

the value is an array, but this field does not allow multiple values



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# File 'lib/sunspot/field.rb', line 68

def to_indexed(value)
  if value.is_a? Array
    if multiple?
      value.map { |val| to_indexed(val) }
    else
      raise ArgumentError, "#{name} is not a multiple-value field, so it cannot index values #{value.inspect}"
    end
  else
    type.to_indexed(value)
  end
end