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
-
#negating ⇒ Object
Returns the value of attribute negating.
- #negating If the next expression is negated.(Ifthe) ⇒ Object
-
#selector ⇒ Object
Returns the value of attribute selector.
- #selector The query selector.(Thequeryselector.) ⇒ Object
Class Method Summary collapse
-
.forwardables ⇒ Array<Symbol>
Get the methods on the selectable that can be forwarded to from a model.
Instance Method Summary collapse
-
#all(*criteria) ⇒ Selectable
(also: #all_in)
Add the $all criterion.
-
#and(*criteria) ⇒ Selectable
(also: #all_of)
Add the $and criterion.
-
#any_of(*criteria) ⇒ Selectable
Adds a disjunction of the arguments as an additional constraint to the criteria already existing in the receiver.
-
#between(criterion) ⇒ Selectable
Add the range selection.
-
#elem_match(criterion) ⇒ Selectable
Select with an $elemMatch.
-
#exists(criterion) ⇒ Selectable
Add the $exists selection.
- #geo_spacial(criterion) ⇒ Object deprecated Deprecated.
-
#geo_spatial(criterion) ⇒ Selectable
Add a $geoIntersects or $geoWithin selection.
-
#gt(criterion) ⇒ Selectable
Add the $gt criterion to the selector.
-
#gte(criterion) ⇒ Selectable
Add the $gte criterion to the selector.
-
#in(condition) ⇒ Selectable
(also: #any_in)
Adds the $in selection to the selectable.
-
#lt(criterion) ⇒ Selectable
Add the $lt criterion to the selector.
-
#lte(criterion) ⇒ Selectable
Add the $lte criterion to the selector.
-
#max_distance(criterion) ⇒ Selectable
Add a $maxDistance selection to the selectable.
-
#mod(criterion) ⇒ Selectable
Adds $mod selection to the selectable.
-
#ne(criterion) ⇒ Selectable
(also: #excludes)
Adds $ne selection to the selectable.
-
#near(criterion) ⇒ Selectable
Adds a $near criterion to a geo selection.
-
#near_sphere(criterion) ⇒ Selectable
Adds a $nearSphere criterion to a geo selection.
-
#negating? ⇒ true, false
Is the current selectable negating the next selection?.
-
#nin(condition) ⇒ Selectable
(also: #not_in)
Adds the $nin selection to the selectable.
-
#nor(*criteria) ⇒ Selectable
Adds $nor selection to the selectable.
-
#not(*criteria) ⇒ Selectable
Negate the arguments, or the next selection if no arguments are given.
-
#or(*criteria) ⇒ Selectable
Creates a disjunction using $or from the existing criteria in the receiver and the provided arguments.
-
#text_search(terms, opts = nil) ⇒ Selectable
Construct a text search selector.
-
#where(*criteria) ⇒ Selectable
This is the general entry point for most MongoDB queries.
-
#with_size(criterion) ⇒ Selectable
Add a $size selection for array fields.
-
#with_type(criterion) ⇒ Selectable
Adds a $type selection to the selectable.
Methods included from Macroable
Instance Attribute Details
#negating ⇒ Object
Returns the value of attribute negating.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 31 def negating @negating end |
#negating If the next expression is negated.(Ifthe) ⇒ Object
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 31 attr_accessor :negating, :selector |
#selector ⇒ Object
Returns the value of attribute selector.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 31 def selector @selector end |
#selector The query selector.(Thequeryselector.) ⇒ Object
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 31 attr_accessor :negating, :selector |
Class Method Details
.forwardables ⇒ Array<Symbol>
Get the methods on the selectable that can be forwarded to from a model.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 982 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 $all criterion.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 46 def all(*criteria) if criteria.empty? return clone.tap do |query| query.reset_strategies! end end criteria.inject(clone) do |query, condition| if condition.nil? raise Errors::CriteriaArgumentRequired, :all end condition = (condition) if strategy send(strategy, condition, "$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.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 87 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 = (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.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 685 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 $or # and add the result to self. exprs = criteria.map do |criterion| if criterion.is_a?(Selectable) (criterion.selector) else Hash[criterion.map do |k, v| if k.is_a?(Symbol) [k.to_s, v] else [k, v] end end] end end # Should be able to do: #where('$or' => exprs) # But since that is broken do instead: clone.tap do |query| if query.selector['$or'] query.selector.store('$or', query.selector['$or'] + exprs) else query.selector.store('$or', exprs) end end end end |
#between(criterion) ⇒ Selectable
Add the range selection.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 135 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 $elemMatch.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 167 def elem_match(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :elem_match end __override__(criterion, "$elemMatch") end |
#exists(criterion) ⇒ Selectable
Add the $exists selection.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 192 def exists(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :exists end typed_override(criterion, "$exists") do |value| Mongoid::Boolean.evolve(value) end end |
#geo_spacial(criterion) ⇒ Object
Alias for geo_spatial
.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 250 def geo_spacial(criterion) # Duplicate method body so that we can raise this exception with # geo_spacial as the indicated operator rather than geo_spatial. if criterion.nil? raise Errors::CriteriaArgumentRequired, :geo_spacial end __merge__(criterion) end |
#geo_spatial(criterion) ⇒ Selectable
The only valid geometry shapes for a $geoIntersects are: :intersects_line, :intersects_point, and :intersects_polygon.
The only valid options for a $geoWithin query are the geometry shape :within_polygon and the operator :within_box.
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: docs.mongodb.com/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.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 239 def geo_spatial(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :geo_spatial end __merge__(criterion) end |
#gt(criterion) ⇒ Selectable
Add the $gt criterion to the selector.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 287 def gt(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :gt end __override__(criterion, "$gt") end |
#gte(criterion) ⇒ Selectable
Add the $gte criterion to the selector.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 309 def gte(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :gte end __override__(criterion, "$gte") end |
#in(condition) ⇒ Selectable Also known as: any_in
Adds the $in selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 334 def in(condition) if condition.nil? raise Errors::CriteriaArgumentRequired, :in end condition = (condition) if strategy send(strategy, condition, "$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 $lt criterion to the selector.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 369 def lt(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :lt end __override__(criterion, "$lt") end |
#lte(criterion) ⇒ Selectable
Add the $lte criterion to the selector.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 391 def lte(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :lte end __override__(criterion, "$lte") end |
#max_distance(criterion) ⇒ Selectable
Add a $maxDistance selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 410 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 $mod selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 432 def mod(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :mod end __override__(criterion, "$mod") end |
#ne(criterion) ⇒ Selectable Also known as: excludes
Adds $ne selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 454 def ne(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :ne end __override__(criterion, "$ne") end |
#near(criterion) ⇒ Selectable
Adds a $near criterion to a geo selection.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 477 def near(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :near end __override__(criterion, "$near") end |
#near_sphere(criterion) ⇒ Selectable
Adds a $nearSphere criterion to a geo selection.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 499 def near_sphere(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :near_sphere end __override__(criterion, "$nearSphere") end |
#negating? ⇒ true, false
Is the current selectable negating the next selection?
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 569 def negating? !!negating end |
#nin(condition) ⇒ Selectable Also known as: not_in
Adds the $nin selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 524 def nin(condition) if condition.nil? raise Errors::CriteriaArgumentRequired, :nin end condition = (condition) if strategy send(strategy, condition, "$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 |
#nor(*criteria) ⇒ Selectable
Adds $nor selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 557 def nor(*criteria) _mongoid_add_top_level_operation('$nor', criteria) end |
#not(*criteria) ⇒ Selectable
Negate the arguments, or the next selection if no arguments are given.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 590 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 (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 $or from the existing criteria in the receiver and the provided arguments.
This behavior (receiver becoming one of the disjunction operands) matches ActiveRecord’s or
behavior.
Use any_of
to add a disjunction of the arguments as an additional constraint to the criteria already existing in the receiver.
Each argument can be a Hash, a Criteria object, an array of Hash or Criteria objects, or a nested array. Nested arrays will be flattened and can be of any depth. Passing arrays is deprecated.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 653 def or(*criteria) _mongoid_add_top_level_operation('$or', criteria) end |
#text_search(terms, opts = nil) ⇒ Selectable
Per docs.mongodb.com/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.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 802 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://docs.mongodb.com/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.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 839 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
This method is named #with_size not to conflict with any existing #size method on enumerables or symbols.
Add a $size selection for array fields.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 740 def with_size(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :with_size end typed_override(criterion, "$size") do |value| ::Integer.evolve(value) end end |
#with_type(criterion) ⇒ Selectable
vurl.me/PGOU contains a list of all types.
Adds a $type selection to the selectable.
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# File 'lib/mongoid/criteria/queryable/selectable.rb', line 768 def with_type(criterion) if criterion.nil? raise Errors::CriteriaArgumentRequired, :with_type end typed_override(criterion, "$type") do |value| ::Integer.evolve(value) end end |