Class: Sunspot::DSL::Query

Inherits:
FieldQuery show all
Defined in:
lib/sunspot/dsl/query.rb

Overview

This class presents a DSL for constructing queries using the Sunspot.search method. Methods of this class are available inside the search block. Much of the DSL’s functionality is implemented by this class’s superclasses, Sunspot::DSL::FieldQuery and Sunspot::DSL::Scope

See Sunspot.search for usage examples

Direct Known Subclasses

Search

Constant Summary

Constants inherited from Scope

Scope::NONE

Instance Method Summary collapse

Methods inherited from FieldQuery

#dynamic, #facet, #initialize, #order_by, #order_by_random

Methods inherited from Scope

#all_of, #any_of, #dynamic, #initialize, #with, #without

Constructor Details

This class inherits a constructor from Sunspot::DSL::FieldQuery

Instance Method Details

#fulltext(keywords, options = {}, &block) ⇒ Object Also known as: keywords

Specify a phrase that should be searched as fulltext. Only text fields are searched - see DSL::Fields.text

Keyword search is executed using Solr’s dismax handler, which strikes a good balance between powerful and foolproof. In particular, well-matched quotation marks can be used to group phrases, and the + and - modifiers work as expected. All other special Solr boolean syntax is escaped, and mismatched quotes are ignored entirely.

This method can optionally take a block, which is evaluated by the Fulltext DSL class, and exposes several powerful dismax features.

Parameters

keywords<String>

phrase to perform fulltext search on

Options

:fields<Array>

List of fields that should be searched for keywords. Defaults to all fields configured for the types under search.

:highlight<Boolean,Array>

If true, perform keyword highlighting on all searched fields. If an array of field names, perform highlighting on the specified fields. This can also be called from within the fulltext block.



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/sunspot/dsl/query.rb', line 38

def fulltext(keywords, options = {}, &block)
  if keywords && !(keywords.to_s =~ /^\s*$/)
    fulltext_query = @query.set_fulltext(keywords)
    if field_names = options.delete(:fields)
      Array(field_names).each do |field_name|
        @setup.text_fields(field_name).each do |field|
          fulltext_query.add_fulltext_field(field, field.default_boost)
        end
      end
    end
    if highlight_field_names = options.delete(:highlight)
      if highlight_field_names == true
        fulltext_query.set_highlight
      else
        highlight_fields = []
        Array(highlight_field_names).each do |field_name|
          highlight_fields.concat(@setup.text_fields(field_name))
        end
        fulltext_query.set_highlight(highlight_fields)
      end
    end
    if block && fulltext_query
      fulltext_dsl = Fulltext.new(fulltext_query, @setup)
      Util.instance_eval_or_call(
        fulltext_dsl,
        &block
      )
    end
    if !field_names && (!fulltext_dsl || !fulltext_dsl.fields_added?)
      @setup.all_text_fields.each do |field|
        unless fulltext_query.has_fulltext_field?(field)
          fulltext_query.add_fulltext_field(field, field.default_boost)
        end
      end
    end
  end
end

#near(coordinates, miles) ⇒ Object

Scope the search by geographical distance from a given point. coordinates should either respond to #first and #last (e.g. a two-element array), or to #lat and one of #lng, #lon, or #long. miles is the radius around the point for which to return documents.



106
107
108
 
# File 'lib/sunspot/dsl/query.rb', line 106

def near(coordinates, miles)
  @query.add_location_restriction(coordinates, miles)
end

#paginate(options = {}) ⇒ Object

Paginate your search. This works the same way as WillPaginate’s paginate().

Note that Solr searches are always paginated. Not calling #paginate is the equivalent of calling:

paginate(:page => 1, :per_page => Sunspot.config.pagination.default_per_page)

Options (options)

:page<Integer,String>

The requested page. The default is 1.

:per_page<Integer,String>

How many results to return per page. The default is the value in Sunspot.config.pagination.default_per_page

Raises:

  • (ArgumentError) 


93
94
95
96
97
98
 
# File 'lib/sunspot/dsl/query.rb', line 93

def paginate(options = {})
  page = options.delete(:page)
  per_page = options.delete(:per_page)
  raise ArgumentError, "unknown argument #{options.keys.first.inspect} passed to paginate" unless options.empty?
  @query.paginate(page, per_page)
end

#text_fields(&block) ⇒ Object

Apply scope-type restrictions on fulltext fields. In certain situations, it may be desirable to place logical restrictions on text fields. Remember that text fields are tokenized; your mileage may very.

The block works exactly like a normal scope, except that the field names refer to text fields instead of attribute fields.

Example

Sunspot.search(Post) do
  text_fields do
    with :body, nil
  end
end

This will return all documents that do not have a body.



128
129
130
131
132
133
 
# File 'lib/sunspot/dsl/query.rb', line 128

def text_fields(&block)
  Sunspot::Util.instance_eval_or_call(
    Scope.new(@scope, TextFieldSetup.new(@setup)),
    &block
  )
end