Module: Queries::Concerns::Tags

Extended by:
ActiveSupport::Concern
Included in:
AssertedDistribution::Filter, BiologicalAssociation::Filter, BiologicalAssociationsGraph::Filter, Queries::CollectingEvent::Filter, Queries::CollectionObject::Filter, Queries::Container::Filter, Depiction::Filter, Descriptor::Filter, Extract::Filter, FieldOccurrence::Filter, GeographicArea::Autocomplete, Image::Filter, Loan::Filter, Observation::Filter, Otu::Filter, Person::Autocomplete, Person::Filter, Sound::Filter, Source::Filter, TaxonName::Filter
Defined in:
lib/queries/concerns/tags.rb

Overview

Helpers and facets for queries that reference Tags.

Test coverage is currently in spec/lib/queries/source/filter_spec.rb.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.merge_clauses ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 43

def self.merge_clauses
  [
    :keyword_id_facet,
    :tags_facet
  ]
end

.params ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 9

def self.params
  [
    :keyword_id_and,
    :keyword_id_or,
    :tags,
    keyword_id_and: [],
    keyword_id_or: []
  ]
end

Instance Method Details

#keyword_id_and ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 57

def keyword_id_and
  [@keyword_id_and].flatten.compact.uniq
end

#keyword_id_facet ⇒ Object

Returns all sources that match all _and ids OR any OR id.

Returns:

  • all sources that match all _and ids OR any OR id



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# File 'lib/queries/concerns/tags.rb', line 77

def keyword_id_facet
  return nil if keyword_id_or.empty? && keyword_id_and.empty?
  k = table.name.classify.safe_constantize

  a = matching_keyword_id_or
  b = matching_keyword_id_and

  if a.nil?
    b
  elsif b.nil?
    a
  else
    k.from("( (#{a.to_sql}) UNION (#{b.to_sql})) as #{table.name}")
  end
end

#keyword_id_or ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 61

def keyword_id_or
  [@keyword_id_or].flatten.compact.uniq
end

#keyword_ids=(value = []) ⇒ Object

TODO: why here?



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# File 'lib/queries/concerns/tags.rb', line 71

def keyword_ids=(value = [])
  @keyword_ids = value
end

#matching_keyword_id_and ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 113

def matching_keyword_id_and
  return nil if keyword_id_and.empty?
  l = table.name
  k = l.classify.safe_constantize
  t = ::Tag.arel_table

  a = table.alias("k_#{l}")

  b = table.project(a[Arel.star]).from(a)
    .join(t)
    .on(
      t[:tag_object_id].eq(a[:id]),
      t[:tag_object_type].eq(k.name)
    )

  i = 0

  keyword_id_and.each do |j|
    t_a = t.alias("tk_#{l[0..5]}_#{i}")
    b = b.join(t_a).on(
      t_a['tag_object_id'].eq(a['id']),
      t_a[:tag_object_type].eq(k),
      t_a[:keyword_id].eq(j)
    )

    i += 1
  end

  b = b.group(a[:id]).having(t[:keyword_id].count.gteq(keyword_id_and.count))
  b = b.as("#{l}_ai")

  k.joins(Arel::Nodes::InnerJoin.new(b, Arel::Nodes::On.new(b[:id].eq(table[:id]))))
end

#matching_keyword_id_or ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 102

def matching_keyword_id_or
  return nil if keyword_id_or.empty?
  k = table.name.classify.safe_constantize
  t = ::Tag.arel_table

  w = t[:tag_object_id].eq(table[:id]).and( t[:tag_object_type].eq(table.name.classify))
  w = w.and( t[:keyword_id].in(keyword_id_or) ) if keyword_id_or.any?

  k.where( ::Tag.where(w).arel.exists )
end

#set_tags_params(params) ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 50

def set_tags_params(params)
  @keyword_id_and = params[:keyword_id_and]
  @keyword_id_or = params[:keyword_id_or]

  @tags = boolean_param(params, :tags) # (params[:tags]&.to_s&.downcase == 'true' ? true : false) if !params[:tags].nil?
end

#tag_table ⇒ Arel::Table

Returns:

  • (Arel::Table) 


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# File 'lib/queries/concerns/tags.rb', line 66

def tag_table
  ::Tag.arel_table
end

#tags_facet ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 93

def tags_facet
  return nil if tags.nil?
  if tags
    referenced_klass.joins(:tags).distinct
  else
    referenced_klass.where.missing(:tags)
  end
end