Module: Mongoid::Criteria::Queryable::Selectable

Extended by:
Macroable
Defined in:
lib/mongoid/criteria/queryable/selectable.rb

Overview

An queryable selectable is selectable, in that it has the ability to select document from the database. The selectable module brings all functionality to the selectable that has to do with building MongoDB selectors.

Constant Summary collapse

LINE_STRING =

Constant for a LineString $geometry.

"LineString"
POINT =

Constant for a Point $geometry.

"Point"
POLYGON =

Constant for a Polygon $geometry.

"Polygon"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Macroable

key

Instance Attribute Details

#negating ⇒ Object

Returns the value of attribute negating.



25
26
27
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 25

def negating
  @negating
end

#negating If the next expression is negated.(Ifthe) ⇒ Object 



25
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 25

attr_accessor :negating, :selector

#selector ⇒ Object

Returns the value of attribute selector.



25
26
27
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 25

def selector
  @selector
end

#selector The query selector.(Thequeryselector.) ⇒ Object 



25
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 25

attr_accessor :negating, :selector

Class Method Details

.forwardables ⇒ Array<Symbol>

Get the methods on the selectable that can be forwarded to from a model.

Examples:

Get the forwardable methods.

Selectable.forwardables

Returns:

  • (Array<Symbol>) —

    The names of the forwardable methods.



945
946
947
948
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 945

def forwardables
  public_instance_methods(false) -
    [ :negating, :negating=, :negating?, :selector, :selector= ]
end

Instance Method Details

#all(*criteria) ⇒ Selectable Also known as: all_in

Add the $all criterion.

Examples:

Add the criterion.

selectable.all(field: [ 1, 2 ])

Execute an $all in a where query.

selectable.where(:field.all => [ 1, 2 ])

Parameters:

  • *criteria (Hash...) —

    The key value pair(s) for $all matching.

Returns:



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
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 38

def all(*criteria)
  if criteria.empty?
    return clone.tap do |query|
      query.reset_strategies!
    end
  end

  criteria.inject(clone) do |query, condition|
    if condition.nil?
      raise Errors::CriteriaArgumentRequired, :all
    end

    condition = expand_condition_to_array_values(condition)

    if strategy
      send(strategy, condition, "$all")
    else
      condition.inject(query) do |_query, (field, value)|
        v = {'$all' => value}
        if negating?
          v = {'$not' => v}
        end
        _query.add_field_expression(field.to_s, v)
      end
    end
  end.reset_strategies!
end

#and(*criteria) ⇒ Selectable Also known as: all_of

Add the $and criterion.

Examples:

Add the criterion.

selectable.and({ field: value }, { other: value })

Parameters:

  • *criteria ([ Hash | Criteria | Array<Hash | Criteria> ]...) —

    Multiple key/value pair matches or Criteria objects that all must match to return results.

Returns:



78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 78

def and(*criteria)
  _mongoid_flatten_arrays(criteria).inject(self.clone) do |c, new_s|
    if new_s.is_a?(Selectable)
      new_s = new_s.selector
    end
    normalized = _mongoid_expand_keys(new_s)
    normalized.each do |k, v|
      k = k.to_s
      if c.selector[k]
        # There is already a condition on k.
        # If v is an operator, and all existing conditions are
        # also operators, and v isn't present in existing conditions,
        # we can add to existing conditions.
        # Otherwise use $and.
        if v.is_a?(Hash) &&
          v.length == 1 &&
          (new_k = v.keys.first).start_with?('$') &&
          (existing_kv = c.selector[k]).is_a?(Hash) &&
          !existing_kv.key?(new_k) &&
          existing_kv.keys.all? { |sub_k| sub_k.start_with?('$') }
        then
          merged_v = c.selector[k].merge(v)
          c.selector.store(k, merged_v)
        else
          c = c.send(:__multi__, [k => v], '$and')
        end
      else
        c.selector.store(k, v)
      end
    end
    c
  end
end

#any_of(*criteria) ⇒ Selectable

Adds a disjunction of the arguments as an additional constraint to the criteria already existing in the receiver.

Use or to make the receiver one of the disjunction operands.

Each argument can be a Hash, a Criteria object, an array of Hash or Criteria objects, or a nested array. Nested arrays will be flattened and can be of any depth. Passing arrays is deprecated.

Examples:

Add the $or selection where both fields must have the specified values.

selectable.any_of(field: 1, field: 2)

Add the $or selection where either value match is sufficient.

selectable.any_of({field: 1}, {field: 2})

Same as previous example but using the deprecated array wrap.

selectable.any_of([{field: 1}, {field: 2}])

Same as previous example, also deprecated.

selectable.any_of([{field: 1}], [{field: 2}])

Parameters:

  • *criteria ([ Hash | Criteria | Array<Hash | Criteria> ]...) —

    Multiple key/value pair matches or Criteria objects, or arrays thereof. Passing arrays is deprecated.

Returns:



674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 674

def any_of(*criteria)
  criteria = _mongoid_flatten_arrays(criteria)
  case criteria.length
  when 0
    clone
  when 1
    # When we have a single criteria, any_of behaves like and.
    # Note: criteria can be a Query object, which #where method does
    # not support.
    self.and(*criteria)
  else
    # When we have multiple criteria, combine them all with $or
    # and add the result to self.
    exprs = criteria.map do |criterion|
      if criterion.is_a?(Selectable)
        _mongoid_expand_keys(criterion.selector)
      else
        Hash[criterion.map do |k, v|
          if k.is_a?(Symbol)
            [k.to_s, v]
          else
            [k, v]
          end
        end]
      end
    end
    self.and('$or' => exprs)
  end
end

#between(criterion) ⇒ Selectable

Add the range selection.

Examples:

Match on results within a single range.

selectable.between(field: 1..2)

Match on results between multiple ranges.

selectable.between(field: 1..2, other: 5..7)

Parameters:

  • criterion (Hash) —

    Multiple key/range pairs.

Returns:



124
125
126
127
128
129
130
131
132
133
134
135
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 124

def between(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :between
  end

  selection(criterion) do |selector, field, value|
    selector.store(
      field,
      { "$gte" => value.min, "$lte" => value.max }
    )
  end
end

#elem_match(criterion) ⇒ Selectable

Select with an $elemMatch.

Examples:

Add criterion for a single match.

selectable.elem_match(field: { name: "value" })

Add criterion for multiple matches.

selectable.elem_match(
  field: { name: "value" },
  other: { name: "value"}
)

Execute an $elemMatch in a where query.

selectable.where(:field.elem_match => { name: "value" })

Parameters:

  • criterion (Hash) —

    The field/match pairs.

Returns:



154
155
156
157
158
159
160
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 154

def elem_match(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :elem_match
  end

  and_with_operator(criterion, "$elemMatch")
end

#eq(criterion) ⇒ Selectable

Add the $eq criterion to the selector.

Examples:

Add the $eq criterion.

selectable.eq(age: 60)

Execute an $eq in a where query.

selectable.where(:field.eq => 10)

Parameters:

  • criterion (Hash) —

    The field/value pairs to check.

Returns:



257
258
259
260
261
262
263
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 257

def eq(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :eq
  end

  and_with_operator(criterion, "$eq")
end

#exists(criterion) ⇒ Selectable

Add the $exists selection.

Examples:

Add a single selection.

selectable.exists(field: true)

Add multiple selections.

selectable.exists(field: true, other: false)

Execute an $exists in a where query.

selectable.where(:field.exists => true)

Parameters:

  • criterion (Hash) —

    The field/boolean existence checks.

Returns:



177
178
179
180
181
182
183
184
185
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 177

def exists(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :exists
  end

  typed_override(criterion, "$exists") do |value|
    Mongoid::Boolean.evolve(value)
  end
end

#geo_spatial(criterion) ⇒ Selectable

Note:

The only valid geometry shapes for a $geoIntersects are: :intersects_line, :intersects_point, and :intersects_polygon.

Note:

The only valid options for a $geoWithin query are the geometry shape :within_polygon and the operator :within_box.

Note:

The :within_box operator for the $geoWithin query expects the lower left (south west) coordinate pair as the first argument and the upper right (north east) as the second argument. Important: When latitude and longitude are passed, longitude is expected as the first element of the coordinate pair. Source: www.mongodb.com/docs/manual/reference/operator/query/box/

Add a $geoIntersects or $geoWithin selection. Symbol operators must be used as shown in the examples to expand the criteria.

Examples:

Add a geo intersect criterion for a line.

query.geo_spatial(:location.intersects_line => [[ 1, 10 ], [ 2, 10 ]])

Add a geo intersect criterion for a point.

query.geo_spatial(:location.intersects_point => [[ 1, 10 ]])

Add a geo intersect criterion for a polygon.

query.geo_spatial(:location.intersects_polygon => [[ 1, 10 ], [ 2, 10 ], [ 1, 10 ]])

Add a geo within criterion for a polygon.

query.geo_spatial(:location.within_polygon => [[ 1, 10 ], [ 2, 10 ], [ 1, 10 ]])

Add a geo within criterion for a box.

query.geo_spatial(:location.within_box => [[ 1, 10 ], [ 2, 10 ])

Parameters:

  • criterion (Hash) —

    The criterion.

Returns:



224
225
226
227
228
229
230
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 224

def geo_spatial(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :geo_spatial
  end

  __merge__(criterion)
end

#gt(criterion) ⇒ Selectable

Add the $gt criterion to the selector.

Examples:

Add the $gt criterion.

selectable.gt(age: 60)

Execute an $gt in a where query.

selectable.where(:field.gt => 10)

Parameters:

  • criterion (Hash) —

    The field/value pairs to check.

Returns:



277
278
279
280
281
282
283
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 277

def gt(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :gt
  end

  and_with_operator(criterion, "$gt")
end

#gte(criterion) ⇒ Selectable

Add the $gte criterion to the selector.

Examples:

Add the $gte criterion.

selectable.gte(age: 60)

Execute an $gte in a where query.

selectable.where(:field.gte => 10)

Parameters:

  • criterion (Hash) —

    The field/value pairs to check.

Returns:



297
298
299
300
301
302
303
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 297

def gte(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :gte
  end

  and_with_operator(criterion, "$gte")
end

#in(condition) ⇒ Selectable Also known as: any_in

Adds the $in selection to the selectable.

Examples:

Add $in selection on an array.

selectable.in(age: [ 1, 2, 3 ])

Add $in selection on a range.

selectable.in(age: 18..24)

Execute an $in in a where query.

selectable.where(:field.in => [ 1, 2, 3 ])

Parameters:

  • condition (Hash) —

    The field/value criterion pairs.

Returns:



320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 320

def in(condition)
  if condition.nil?
    raise Errors::CriteriaArgumentRequired, :in
  end

  condition = expand_condition_to_array_values(condition)

  if strategy
    send(strategy, condition, "$in")
  else
    condition.inject(clone) do |query, (field, value)|
      v = {'$in' => value}
      if negating?
        v = {'$not' => v}
      end
      query.add_field_expression(field.to_s, v)
    end.reset_strategies!
  end
end

#lt(criterion) ⇒ Selectable

Add the $lt criterion to the selector.

Examples:

Add the $lt criterion.

selectable.lt(age: 60)

Execute an $lt in a where query.

selectable.where(:field.lt => 10)

Parameters:

  • criterion (Hash) —

    The field/value pairs to check.

Returns:



353
354
355
356
357
358
359
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 353

def lt(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :lt
  end

  and_with_operator(criterion, "$lt")
end

#lte(criterion) ⇒ Selectable

Add the $lte criterion to the selector.

Examples:

Add the $lte criterion.

selectable.lte(age: 60)

Execute an $lte in a where query.

selectable.where(:field.lte => 10)

Parameters:

  • criterion (Hash) —

    The field/value pairs to check.

Returns:



373
374
375
376
377
378
379
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 373

def lte(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :lte
  end

  and_with_operator(criterion, "$lte")
end

#max_distance(criterion) ⇒ Selectable

Add a $maxDistance selection to the selectable.

Examples:

Add the $maxDistance selection.

selectable.max_distance(location: 10)

Parameters:

  • criterion (Hash) —

    The field/distance pairs.

Returns:



390
391
392
393
394
395
396
397
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 390

def max_distance(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :max_distance
  end

  # $maxDistance must be given together with $near
  __add__(criterion, "$maxDistance")
end

#mod(criterion) ⇒ Selectable

Adds $mod selection to the selectable.

Examples:

Add the $mod selection.

selectable.mod(field: [ 10, 1 ])

Execute an $mod in a where query.

selectable.where(:field.mod => [ 10, 1 ])

Parameters:

  • criterion (Hash) —

    The field/mod selections.

Returns:



410
411
412
413
414
415
416
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 410

def mod(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :mod
  end

  and_with_operator(criterion, "$mod")
end

#ne(criterion) ⇒ Selectable Also known as: excludes

Adds $ne selection to the selectable.

Examples:

Query for a value $ne to something.

selectable.ne(field: 10)

Execute an $ne in a where query.

selectable.where(:field.ne => "value")

Parameters:

  • criterion (Hash) —

    The field/ne selections.

Returns:



430
431
432
433
434
435
436
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 430

def ne(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :ne
  end

  and_with_operator(criterion, "$ne")
end

#near(criterion) ⇒ Selectable

Adds a $near criterion to a geo selection.

Examples:

Add the $near selection.

selectable.near(location: [ 23.1, 12.1 ])

Execute an $near in a where query.

selectable.where(:field.near => [ 23.2, 12.1 ])

Parameters:

  • criterion (Hash) —

    The field/location pair.

Returns:



451
452
453
454
455
456
457
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 451

def near(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :near
  end

  and_with_operator(criterion, "$near")
end

#near_sphere(criterion) ⇒ Selectable

Adds a $nearSphere criterion to a geo selection.

Examples:

Add the $nearSphere selection.

selectable.near_sphere(location: [ 23.1, 12.1 ])

Execute an $nearSphere in a where query.

selectable.where(:field.near_sphere => [ 10.11, 3.22 ])

Parameters:

  • criterion (Hash) —

    The field/location pair.

Returns:



471
472
473
474
475
476
477
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 471

def near_sphere(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :near_sphere
  end

  and_with_operator(criterion, "$nearSphere")
end

#negating? ⇒ true | false

Is the current selectable negating the next selection?

Examples:

Is the selectable negating?

selectable.negating?

Returns:

  • (true | false) —

    If the selectable is negating.



535
536
537
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 535

def negating?
  !!negating
end

#nin(condition) ⇒ Selectable Also known as: not_in

Adds the $nin selection to the selectable.

Examples:

Add $nin selection on an array.

selectable.nin(age: [ 1, 2, 3 ])

Add $nin selection on a range.

selectable.nin(age: 18..24)

Execute an $nin in a where query.

selectable.where(:field.nin => [ 1, 2, 3 ])

Parameters:

  • condition (Hash) —

    The field/value criterion pairs.

Returns:



494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 494

def nin(condition)
  if condition.nil?
    raise Errors::CriteriaArgumentRequired, :nin
  end

  condition = expand_condition_to_array_values(condition)

  if strategy
    send(strategy, condition, "$nin")
  else
    condition.inject(clone) do |query, (field, value)|
      v = {'$nin' => value}
      if negating?
        v = {'$not' => v}
      end
      query.add_field_expression(field.to_s, v)
    end.reset_strategies!
  end
end

#none_of(*criteria) ⇒ Selectable

Negate the arguments, constraining the query to only those documents that do NOT match the arguments.

Examples:

Exclude a single criterion.

selectable.none_of(name: /Bob/)

Exclude multiple criteria.

selectable.none_of(name: /Bob/, country: "USA")

Exclude multiple criteria as an array.

selectable.none_of([{ name: /Bob/ }, { country: "USA" }])

Parameters:

  • *criteria ([ Hash | Criteria ]...) —

    The key/value pair matches or Criteria objects to negate.

Returns:



601
602
603
604
605
606
607
608
609
610
611
612
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 601

def none_of(*criteria)
  criteria = _mongoid_flatten_arrays(criteria)
  return dup if criteria.empty?

  exprs = criteria.map do |criterion|
    _mongoid_expand_keys(
        criterion.is_a?(Selectable) ?
          criterion.selector : criterion)
  end

  self.and('$nor' => exprs)
end

#nor(*criteria) ⇒ Selectable

Adds $nor selection to the selectable.

Examples:

Add the $nor selection.

selectable.nor(field: 1, field: 2)

Parameters:

  • *criteria ([ Hash | Criteria | Array<Hash | Criteria> ]...) —

    Multiple key/value pair matches or Criteria objects.

Returns:



525
526
527
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 525

def nor(*criteria)
  _mongoid_add_top_level_operation('$nor', criteria)
end

#not(*criteria) ⇒ Selectable

Negate the arguments, or the next selection if no arguments are given.

Examples:

Negate the next selection.

selectable.not.in(field: [ 1, 2 ])

Add the $not criterion.

selectable.not(name: /Bob/)

Execute a $not in a where query.

selectable.where(:field.not => /Bob/)

Parameters:

  • *criteria ([ Hash | Criteria ]...) —

    The key/value pair matches or Criteria objects to negate.

Returns:



554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 554

def not(*criteria)
  if criteria.empty?
    dup.tap { |query| query.negating = true }
  else
    criteria.compact.inject(self.clone) do |c, new_s|
      if new_s.is_a?(Selectable)
        new_s = new_s.selector
      end
      _mongoid_expand_keys(new_s).each do |k, v|
        k = k.to_s
        if c.selector[k] || k.start_with?('$')
          c = c.send(:__multi__, [{'$nor' => [{k => v}]}], '$and')
        else
          if v.is_a?(Hash)
            c = c.send(:__multi__, [{'$nor' => [{k => v}]}], '$and')
          else
            if v.is_a?(Regexp)
              negated_operator = '$not'
            else
              negated_operator = '$ne'
            end
            c = c.send(:__override__, {k => v}, negated_operator)
          end
        end
      end
      c
    end
  end
end

#or(*criteria) ⇒ Selectable

Creates a disjunction using $or from the existing criteria in the receiver and the provided arguments.

This behavior (receiver becoming one of the disjunction operands) matches ActiveRecord’s or behavior.

Use any_of to add a disjunction of the arguments as an additional constraint to the criteria already existing in the receiver.

Each argument can be a Hash, a Criteria object, an array of Hash or Criteria objects, or a nested array. Nested arrays will be flattened and can be of any depth. Passing arrays is deprecated.

Examples:

Add the $or selection where both fields must have the specified values.

selectable.or(field: 1, field: 2)

Add the $or selection where either value match is sufficient.

selectable.or({field: 1}, {field: 2})

Same as previous example but using the deprecated array wrap.

selectable.or([{field: 1}, {field: 2}])

Same as previous example, also deprecated.

selectable.or([{field: 1}], [{field: 2}])

Parameters:

  • *criteria ([ Hash | Criteria | Array<Hash | Criteria> ]...) —

    Multiple key/value pair matches or Criteria objects, or arrays thereof. Passing arrays is deprecated.

Returns:



644
645
646
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 644

def or(*criteria)
  _mongoid_add_top_level_operation('$or', criteria)
end

#text_search(terms, opts = nil) ⇒ Selectable

Note:

Per www.mongodb.com/docs/manual/reference/operator/query/text/ it is not currently possible to supply multiple text search conditions in a query. Mongoid will build such a query but the server will return an error when trying to execute it.

Construct a text search selector.

Examples:

Construct a text search selector.

selectable.text_search("testing")

Construct a text search selector with options.

selectable.text_search("testing", :$language => "fr")

Parameters:

  • terms (String | Symbol) —

    A string of terms that MongoDB parses and uses to query the text index.

  • opts (Hash) (defaults to: nil) —

    Text search options. See MongoDB documentation for options.

Returns:



776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 776

def text_search(terms, opts = nil)
  if terms.nil?
    raise Errors::CriteriaArgumentRequired, :terms
  end

  clone.tap do |query|
    criterion = {'$text' => { '$search' => terms }}
    criterion['$text'].merge!(opts) if opts
    if query.selector['$text']
      # Per https://www.mongodb.com/docs/manual/reference/operator/query/text/
      # multiple $text expressions are not currently supported by
      # MongoDB server, but build the query correctly instead of
      # overwriting previous text search condition with the currently
      # given one.
      Mongoid.logger.warn('Multiple $text expressions per query are not currently supported by the server')
      query.selector = {'$and' => [query.selector]}.merge(criterion)
    else
      query.selector = query.selector.merge(criterion)
    end
  end
end

#where(*criteria) ⇒ Selectable

This is the general entry point for most MongoDB queries. This either creates a standard field: value selection, and expanded selection with the use of hash methods, or a $where selection if a string is provided.

Examples:

Add a standard selection.

selectable.where(name: "syd")

Add a javascript selection.

selectable.where("this.name == 'syd'")

Parameters:

  • *criterion ([ Hash | String ]...) —

    The standard selection or javascript string.

Returns:



812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 812

def where(*criteria)
  criteria.inject(clone) do |query, criterion|
    if criterion.nil?
      raise Errors::CriteriaArgumentRequired, :where
    end

    # We need to save the criterion in an instance variable so
    # Modifiable methods know how to create a polymorphic object.
    # Note that this method in principle accepts multiple criteria,
    # but only the first one will be stored in @criterion. This
    # works out to be fine because first_or_create etc. methods
    # only ever specify one criterion to #where.
    @criterion = criterion
    if criterion.is_a?(String)
      js_query(criterion)
    else
      expr_query(criterion)
    end
  end.reset_strategies!
end

#with_size(criterion) ⇒ Selectable

Note:

This method is named #with_size not to conflict with any existing #size method on enumerables or symbols.

Add a $size selection for array fields.

Examples:

Add the $size selection.

selectable.with_size(field: 5)

Execute an $size in a where query.

selectable.where(:field.with_size => 10)

Parameters:

  • criterion (Hash) —

    The field/size pairs criterion.

Returns:



718
719
720
721
722
723
724
725
726
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 718

def with_size(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :with_size
  end

  typed_override(criterion, "$size") do |value|
    ::Integer.evolve(value)
  end
end

#with_type(criterion) ⇒ Selectable

Note:

vurl.me/PGOU contains a list of all types.

Adds a $type selection to the selectable.

Examples:

Add the $type selection.

selectable.with_type(field: 15)

Execute an $type in a where query.

selectable.where(:field.with_type => 15)

Parameters:

  • criterion (Hash) —

    The field/type pairs.

Returns:



744
745
746
747
748
749
750
751
752
 
# File 'lib/mongoid/criteria/queryable/selectable.rb', line 744

def with_type(criterion)
  if criterion.nil?
    raise Errors::CriteriaArgumentRequired, :with_type
  end

  typed_override(criterion, "$type") do |value|
    ::Integer.evolve(value)
  end
end