Module: Queries::Concerns::Tags

Extended by:
ActiveSupport::Concern
Included in:
Queries::CollectingEvent::Filter, Queries::CollectionObject::Filter, Image::Filter, Person::Autocomplete, Person::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.

You must define

def table
  :;Model.arel_table
end

in including modules.

Instance Method Summary collapse

Instance Method Details

#keyword_id_and ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 39

def keyword_id_and
  [@keyword_id_and].flatten
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 58

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 sources")
  end
end

#keyword_id_or ⇒ Object 



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

def keyword_id_or
  [@keyword_id_or].flatten
end

#keyword_ids=(value = []) ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 52

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

#matching_keyword_id_and ⇒ Object

merge



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# File 'lib/queries/concerns/tags.rb', line 87

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

merge



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# File 'lib/queries/concerns/tags.rb', line 75

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].eq_any(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 32

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

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

#tag_facet ⇒ Object 



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# File 'lib/queries/concerns/tags.rb', line 121

def tag_facet
  return nil if tags.nil?
  k = table.name.classify.safe_constantize

  if tags
    k.joins(:tags).distinct
  else
    k.left_outer_joins(:tags)
      .where(tags: {id: nil})
  end
end

#tag_table ⇒ Arel::Table

Returns:

  • (Arel::Table) 


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# File 'lib/queries/concerns/tags.rb', line 48

def tag_table 
  ::Tag.arel_table
end