Class: ForestLiana::SearchQueryBuilder

Inherits:
Object
  • Object
show all
Defined in:
app/services/forest_liana/search_query_builder.rb

Constant Summary collapse

REGEX_UUID = 
/\A[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}\z/i

Instance Method Summary collapse

Constructor Details

#initialize(resource, params, includes) ⇒ SearchQueryBuilder

Returns a new instance of SearchQueryBuilder.



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# File 'app/services/forest_liana/search_query_builder.rb', line 5

def initialize(resource, params, includes)
  @resource = @records = resource
  @params = params
  @includes = includes
end

Instance Method Details

#acts_as_taggable?(field) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/services/forest_liana/search_query_builder.rb', line 147

def acts_as_taggable?(field)
  @resource.respond_to?(:acts_as_taggable) &&
    @resource.acts_as_taggable.include?(field)
end

#acts_as_taggable_query(tagged_records) ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 37

def acts_as_taggable_query(tagged_records)
  ids = tagged_records
    .map {|t| t[@resource.primary_key]}
    .join(',')

  if ids.present?
    return "#{@resource.primary_key} IN (#{ids})"
  end
end

#association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/services/forest_liana/search_query_builder.rb', line 135

def association?(field)
  field = field.split(':').first if field.include?(':')
  @resource.reflect_on_association(field.to_sym).present?
end

#belongs_to_association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/services/forest_liana/search_query_builder.rb', line 204

def belongs_to_association?(field)
  field = field.split(':').first if field.include?(':')
  association = @resource.reflect_on_association(field.to_sym)
  [:belongs_to, :has_one].include?(association.try(:macro))
end

#belongs_to_filter ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 230

def belongs_to_filter
  if @params[:filter]
    @params[:filter].each do |field, values|
      next unless belongs_to_association?(field)

      values.split(',').each do |value|
        @records = belongs_to_subfield_filter(field, value)
      end
    end
  end

  @records
end

#belongs_to_subfield_filter(field, value) ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 210

def belongs_to_subfield_filter(field, value)
  field, subfield = field.split(':')

  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  operator_date_interval_parser = OperatorDateIntervalParser.new(value,
    @params[:timezone])
  if operator_date_interval_parser.is_interval_date_value()
    filter = operator_date_interval_parser.get_interval_date_filter()
    @records = @records.where("#{association.table_name}.#{subfield} #{filter}")
  else
    where = "#{association.table_name}.#{subfield} #{operator}"
    where += " '#{value}'" if value
    @records = @records.where(where)
  end
end

#filter_param ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 103

def filter_param
  if @params[:filterType] && @params[:filter]
    conditions = []

    @params[:filter].each do |field, values|
      # ActsAsTaggable
      if acts_as_taggable?(field)
        tagged_records = @records.tagged_with(values.tr('*', ''))

        if @params[:filterType] == 'and'
          @records = tagged_records
        elsif @params[:filterType] == 'or'
          conditions << acts_as_taggable_query(tagged_records)
        end
      else
        next if association?(field)

        values.split(',').each do |value|
          operator, value = OperatorValueParser.parse(value)
          conditions << OperatorValueParser.get_condition(field, operator,
            value, @resource, @params[:timezone])
        end
      end
    end

    operator = " #{@params[:filterType]} ".upcase
    @records = @records.where(conditions.join(operator))
  end

  @records
end

#format_column_name(table_name, column_name) ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 33

def format_column_name(table_name, column_name)
  ForestLiana::AdapterHelper.format_column_name(table_name, column_name)
end

#has_many_association?(field) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/services/forest_liana/search_query_builder.rb', line 140

def has_many_association?(field)
  field = field.split(':').first if field.include?(':')
  association = @resource.reflect_on_association(field.to_sym)

  [:has_many, :has_and_belongs_to_many].include?(association.try(:macro))
end

#has_many_field_filter(field, value) ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 170

def has_many_field_filter(field, value)
  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  @records = @records
    .select("#{@resource.table_name}.*,
            COUNT(#{association.table_name}.id)
            #{association.table_name}_has_many_count")
    .joins(ArelHelpers.join_association(@resource, association.name,
                                        Arel::Nodes::OuterJoin))
    .group("#{@resource.table_name}.id")
    .having("COUNT(#{association.table_name}) #{operator} #{value}")
end

#has_many_filter ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 152

def has_many_filter
  if @params[:filter]
    @params[:filter].each do |field, values|
      next if !has_many_association?(field) || acts_as_taggable?(field)

      values.split(',').each do |value|
        if field.include?(':')
          @records = has_many_subfield_filter(field, value)
        else
          @records = has_many_field_filter(field, value)
        end
      end
    end
  end

  @records
end

#has_many_subfield_filter(field, value) ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 186

def has_many_subfield_filter(field, value)
  field, subfield = field.split(':')

  association = @resource.reflect_on_association(field.to_sym)
  return if association.blank?

  operator, value = OperatorValueParser.parse(value)

  @records = @records
    .select("#{@resource.table_name}.*,
            COUNT(#{association.table_name}.id)
            #{association.table_name}_has_many_count")
    .joins(ArelHelpers.join_association(@resource, association.name,
                                        Arel::Nodes::OuterJoin))
    .group("#{@resource.table_name}.id, #{association.table_name}.#{subfield}")
    .having("#{association.table_name}.#{subfield} #{operator} '#{value}'")
end

#perform ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 11

def perform
  @records = search_param
  @records = filter_param
  @records = has_many_filter
  @records = belongs_to_filter

  if @params[:search]
    ForestLiana.schema_for_resource(@resource).fields.each do |field|
      if field.try(:[], :search)
        begin
          @records = field[:search].call(@records, @params[:search])
        rescue => exception
          FOREST_LOGGER.error "Cannot search properly on Smart Field :\n" \
            "#{exception}"
        end
      end
    end
  end

  @records
end

#search_param ⇒ Object 



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# File 'app/services/forest_liana/search_query_builder.rb', line 47

def search_param
  if @params[:search]
    conditions = []

    @resource.columns.each_with_index do |column, index|
      column_name = format_column_name(@resource.table_name, column.name)
      if column.name == 'id'
        if column.type == :integer
          value = @params[:search].to_i
          conditions << "#{@resource.table_name}.id = #{value}" if value > 0
        elsif REGEX_UUID.match(@params[:search])
          conditions << "#{@resource.table_name}.id =
            '#{@params[:search]}'"
        end
      # NOTICE: Rails 3 do not have a defined_enums method
      elsif @resource.respond_to?(:defined_enums) &&
        @resource.defined_enums.has_key?(column.name) &&
        !@resource.defined_enums[column.name][@params[:search].downcase].nil?
        conditions << "#{column_name} =
          #{@resource.defined_enums[column.name][@params[:search].downcase]}"
      elsif !(column.respond_to?(:array) && column.array) &&
        (column.type == :string || column.type == :text)
        conditions << "LOWER(#{column_name}) LIKE '%#{@params[:search].downcase}%'"
      end
    end

    # ActsAsTaggable
    if @resource.respond_to?(:acts_as_taggable)
      @resource.acts_as_taggable.each do |field|
        tagged_records = @records.tagged_with(@params[:search].downcase)
        condition = acts_as_taggable_query(tagged_records)
        conditions << condition if condition
      end
    end

    SchemaUtils.one_associations(@resource).map(&:name).each do |association|
      if @includes.include? association.to_sym
        resource = @resource.reflect_on_association(association.to_sym)
        resource.klass.columns.each do |column|
          if !(column.respond_to?(:array) && column.array) &&
            (column.type == :string || column.type == :text)
            column_name = format_column_name(resource.table_name,
              column.name)
            conditions << "LOWER(#{column_name}) LIKE " +
              "'%#{@params[:search].downcase}%'"
          end
        end
      end
    end

    @records = @resource.where(conditions.join(' OR '))
  end

  @records
end