Module: Effective::Resources::Relation

Included in:
Effective::Resource
Defined in:
app/models/effective/resources/relation.rb

Constant Summary collapse

TARGET_LIST_LIMIT = 
1500
TARGET_KEYS_LIMIT = 
30000
DO_NOT_SEARCH_EQUALS = 
['unconfirmed_email', 'provider', 'secret', 'crypt', 'salt', 'uid', 'certificate', 'otp', 'ssn']
DO_NOT_SEARCH_INCLUDE = 
['password']
DO_NOT_SEARCH_END_WITH = 
['_url', '_param', '_token', '_type', '_id', '_key', '_ip']

Instance Method Summary collapse

Instance Method Details

#order(name, direction = :asc, as: nil, sort: nil, sql_column: nil, limit: nil, reorder: false) ⇒ Object

name: sort by this column, or this relation sort: when a symbol or boolean, this is the relation’s column to sort by



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# File 'app/models/effective/resources/relation.rb', line 25

def order(name, direction = :asc, as: nil, sort: nil, sql_column: nil, limit: nil, reorder: false)
  raise 'expected relation to be present' unless relation

  sql_column ||= sql_column(name)
  sql_type = (as || sql_type(name))

  association = associated(name)
  sql_direction = sql_direction(direction)
  @relation = relation.reorder(nil) if reorder

  case sql_type
  when :belongs_to
    relation
      .order(order_by_associated_conditions(association, sort: sort, direction: direction, limit: limit))
  when :belongs_to_polymorphic
    relation
      .order(Arel.sql("#{sql_column}_type #{sql_direction}"))
      .order(Arel.sql("#{sql_column}_id #{sql_direction}"))
  when :has_and_belongs_to_many, :has_many, :has_one
    relation
      .order(order_by_associated_conditions(association, sort: sort, direction: direction, limit: limit))
      .order(Arel.sql("#{sql_column(klass.primary_key)} #{sql_direction}"))
  when :effective_addresses
    relation
      .order(order_by_associated_conditions(associated(:addresses), sort: sort, direction: direction, limit: limit))
      .order(Arel.sql("#{sql_column(klass.primary_key)} #{sql_direction}"))
  when :active_storage
    relation
      .send("with_attached_#{name}")
      .references("#{name}_attachment")
      .order(Arel.sql("active_storage_blobs.filename #{sql_direction}"))
  when :effective_roles
    relation
      .order(Arel.sql("#{sql_column(:roles_mask)} #{sql_direction}"))
  when :time
    relation
      .order(Arel.sql("EXTRACT(hour from #{sql_column}) #{sql_direction}, EXTRACT(minute from #{sql_column}) #{sql_direction}"))
  when :string, :text
    relation
      .order(Arel.sql(("ISNULL(#{sql_column}), " if mysql?).to_s + "#{sql_column}='' ASC, #{sql_column} #{sql_direction}" + (" NULLS LAST" if postgres?).to_s))
  when :date, :datetime
    relation
      .order(Arel.sql(("ISNULL(#{sql_column}), " if mysql?).to_s + "#{sql_column} #{sql_direction}" + (" NULLS LAST" if postgres?).to_s))
  else
    relation
      .order(Arel.sql("#{sql_column} #{sql_direction}"))
  end
end

#relation ⇒ Object

This could be active_model? in which we just return the klass itself here This value ends up being crud_controller resource_scope()



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# File 'app/models/effective/resources/relation.rb', line 15

def relation
  @relation ||= (klass.respond_to?(:where) ? klass.where(nil) : klass)
end

#search(name, value, as: nil, column: nil, operation: nil) ⇒ Object 



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# File 'app/models/effective/resources/relation.rb', line 74

def search(name, value, as: nil, column: nil, operation: nil)
  raise 'expected relation to be present' unless relation

  sql_as = (as || sql_type(name))
  sql_column = (column || sql_column(name))
  sql_operation = (operation || sql_operation(name, as: sql_as)).to_sym

  if ['SUM(', 'COUNT(', 'MAX(', 'MIN(', 'AVG('].any? { |str| sql_column.to_s.include?(str) }
    return relation.having("#{sql_column} = ?", value)
  end

  case sql_as
  when :belongs_to, :belongs_to_polymorphic, :has_and_belongs_to_many, :has_many, :has_one
    search_associated(name, value, as: sql_as, operation: sql_operation)
  else
    return relation.where(is_null(sql_column)) if value.to_s == 'nil'
    search_attribute(name, value, as: sql_as, operation: sql_operation, sql_column: sql_column)
  end
end

#search_any(value, columns: nil, fuzzy: nil) ⇒ Object 



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# File 'app/models/effective/resources/relation.rb', line 380

def search_any(value, columns: nil, fuzzy: nil)
  raise 'expected relation to be present' unless relation

  # Assume this is a set of IDs
  if value.kind_of?(Integer) || value.kind_of?(Array) || (value.to_i.to_s == value)
    return relation.where(klass.primary_key => value)
  end

  # If the user specifies columns. Filter out invalid ones for this klass
  if columns.present?
    columns = Array(columns).map(&:to_s) - [nil, '']
    columns = (columns & search_columns)
  end

  # Otherwise, we fall back to a string/text search of all columns
  columns = Array(columns || search_columns).reject do |column|
    DO_NOT_SEARCH_EQUALS.any? { |value| column == value } ||
    DO_NOT_SEARCH_INCLUDE.any? { |value| column.include?(value) } ||
    DO_NOT_SEARCH_END_WITH.any? { |value| column.end_with?(value) }
  end

  return relation.none() if columns.blank?

  search_columns_by_ilike_term(relation, value, columns: columns, fuzzy: fuzzy)
end

#search_associated(name, value, as:, operation:) ⇒ Object 



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# File 'app/models/effective/resources/relation.rb', line 94

def search_associated(name, value, as:, operation:)
  reflection = associated(name)

  raise("expected to find #{relation.klass.name} #{name} reflection") unless reflection
  raise("unexpected search_associated operation #{operation || 'nil'}") unless [:eq, :matches, :does_not_match, :sql].include?(operation)

  # Parse values
  value_ids = value.kind_of?(Array) ? value : (value.to_s.split(/,|\s|\|/) - [nil, '', ' '])
  value_sql = Arel.sql(value) if value.kind_of?(String)

  # Foreign id and type
  foreign_id = reflection.foreign_key
  foreign_type = reflection.foreign_key.to_s.chomp('_id') + '_type'

  # belongs_to polymorphic
  retval = if as == :belongs_to_polymorphic
    (type, id) = value.to_s.split('_')

    if type.present? && id.present?  # This was from a polymorphic select
      case operation
      when :eq
        relation.where(foreign_type => type, foreign_id => id)
      when :matches
        relation.where(foreign_type => type, foreign_id => id)
      when :does_not_match
        relation.where.not(foreign_type => type, foreign_id => id)
      when :sql
        if (relation.where(value_sql).present? rescue :invalid) != :invalid
          relation.where(value_sql)
        else
          relation
        end
      end
    else # Maybe from a string field
      associated = relation.none

      relation.unscoped.distinct(foreign_type).pluck(foreign_type).each do |klass_name|
        next if klass_name.nil?

        resource = Effective::Resource.new(klass_name)
        next unless resource.klass.present?

        associated = associated.or(relation.where(foreign_id => resource.search_any(value), foreign_type => klass_name))
      end

      case operation
      when :eq
        relation.where(id: associated.select(:id))
      when :matches
        relation.where(id: associated.select(:id))
      when :does_not_match
        relation.where.not(id: associated.select(:id))
      when :sql
        if (relation.where(value_sql).present? rescue :invalid) != :invalid
          relation.where(value_sql)
        else
          relation
        end
      end
    end

  # belongs_to non-polymorphic
  elsif as == :belongs_to
    foreign_collection = reflection.klass.all
    foreign_collection = reflection.klass.where(foreign_type => relation.klass.name) if reflection.klass.new.respond_to?(foreign_type)

    case operation
    when :eq
      associated = foreign_collection.where(id: value_ids)
      relation.where(foreign_id => associated.select(:id))
    when :matches
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where(foreign_id => associated.select(:id))
    when :does_not_match
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where.not(foreign_id => associated.select(:id))
    when :sql
      if (foreign_collection.where(value_sql).present? rescue :invalid) != :invalid
        associated = foreign_collection.where(value_sql)
        relation.where(foreign_id => associated.select(:id))
      else
        relation
      end
    end

  # has_and_belongs_to_many
  elsif as == :has_and_belongs_to_many
    foreign_collection = reflection.source_reflection.klass.all

    habtm = foreign_collection.klass.reflect_on_all_associations.find { |ass| ass.macro == :has_and_belongs_to_many && ass.join_table == reflection.join_table }
    raise("expected a matching HABTM reflection") unless habtm

    case operation
    when :eq
      associated = foreign_collection.where(id: value_ids)
      relation.where(id: associated.joins(habtm.name).select(foreign_id))
    when :matches
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where(id: associated.joins(habtm.name).select(foreign_id))
    when :does_not_match
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where.not(id: associated.joins(habtm.name).select(foreign_id))
    when :sql
      if (foreign_collection.where(value_sql).present? rescue :invalid) != :invalid
        associated = foreign_collection.where(value_sql)
        relation.where(id: associated.joins(habtm.name).select(foreign_id))
      else
        relation
      end
    end

  # has_many through
  elsif reflection.options[:through].present?
    reflected_klass = if reflection.source_reflection.options[:polymorphic]
      reflection.klass
    else
      reflection.source_reflection.klass
    end

    reflected_id = if reflection.source_reflection.macro == :belongs_to
      reflection.source_reflection.foreign_key # to do check this
    else
      reflection.source_reflection.klass.primary_key # group_id
    end

    foreign_id = if reflection.through_reflection.macro == :belongs_to
      reflection.through_reflection.klass.primary_key # to do check this
    else
      reflection.through_reflection.foreign_key # user_id
    end

    # Build the through collection
    through = reflection.through_reflection.klass.all  # group mates

    if reflection.source_reflection.options[:polymorphic]
      through = through.where(reflection.source_reflection.foreign_type => reflected_klass.name)
    end

    # Search the associated class
    case operation
    when :eq
      associated = through.where(reflected_id => value_ids)
      relation.where(id: associated.select(foreign_id))
    when :matches
      reflected = Resource.new(reflected_klass).search_any(value)
      associated = through.where(reflected_id => reflected)
      relation.where(id: associated.select(foreign_id))
    when :does_not_match
      reflected = Resource.new(reflected_klass).search_any(value)
      associated = through.where(reflected_id => reflected)
      relation.where.not(id: associated.select(foreign_id))
    when :sql
      if (reflected_klass.where(value_sql).present? rescue :invalid) != :invalid
        reflected = reflected_klass.where(value_sql)
        associated = through.where(reflected_id => reflected)
        relation.where(id: associated.select(foreign_id))
      else
        relation
      end
    end

  # has_many and has_one
  elsif (as == :has_many || as == :has_one)
    foreign_collection = reflection.klass.all
    foreign_collection = reflection.klass.where(foreign_type => relation.klass.name) if reflection.klass.new.respond_to?(foreign_type)

    case operation
    when :eq
      associated = foreign_collection.where(id: value_ids)
      relation.where(id: associated.select(foreign_id))
    when :matches
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where(id: associated.select(foreign_id))
    when :does_not_match
      associated = Resource.new(foreign_collection).search_any(value)
      relation.where.not(id: associated.select(foreign_id))
    when :sql
      if (foreign_collection.where(value_sql).present? rescue :invalid) != :invalid
        associated = foreign_collection.where(value_sql)
        relation.where(id: associated.select(foreign_id))
      else
        relation
      end
    end
  end

  retval || raise("unable to search associated #{as} #{operation} #{name} for #{value}")
end

#search_attribute(name, value, as:, operation:, sql_column:) ⇒ Object 



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# File 'app/models/effective/resources/relation.rb', line 283

def search_attribute(name, value, as:, operation:, sql_column:)
  raise 'expected relation to be present' unless relation

  attribute = relation.arel_table[name]

  # Normalize the term.
  # If you pass an email attribute it can return nil so we return the full value
  term = Attribute.new(as).parse(value, name: name)
  term = value if term.nil?

  # If using the joined syntax from datatables
  joined = (sql_column.to_s.split('.').first.to_s.include?(relation.arel_table.name) == false)

  searched = case as
    when :active_storage
      relation.send("with_attached_#{name}").references("#{name}_attachment")
        .where(ActiveStorage::Blob.arel_table[:filename].matches("%#{term}%"))

    when :date, :datetime
      if value.kind_of?(String) && term.respond_to?(:strftime)
        end_at = (
          case (value.to_s.scan(/(\d+)/).flatten).length
          when 1 ; term.end_of_year     # Year
          when 2 ; term.end_of_month    # Year-Month
          when 3 ; term.end_of_day      # Year-Month-Day
          when 4 ; term.end_of_hour     # Year-Month-Day Hour
          when 5 ; term.end_of_minute   # Year-Month-Day Hour-Minute
          when 6 ; term + 1.second      # Year-Month-Day Hour-Minute-Second
          else term
          end
        )

        if as == :date
          relation.where("#{sql_column} >= ? AND #{sql_column} < ?", term.to_date, (end_at + 1.day).to_date)
        else
          relation.where("#{sql_column} >= ? AND #{sql_column} <= ?", term, end_at)
        end
      elsif value.respond_to?(:strftime) && operation == :eq
        if as == :date
          relation.where("#{sql_column} = ?", value)
        else
          relation.where("#{sql_column} >= ? AND #{sql_column} <= ?", value.beginning_of_day, value.end_of_day)
        end
      elsif term.respond_to?(:strftime) == false && operation.to_s.include?('days_ago') == false
        relation.none # It's an invalid entered date 
      end
    when :effective_obfuscation
      term = Attribute.new(as, klass: (associated(name).try(:klass) || klass)).parse(value, name: name)
      relation.where(attribute.eq((value == term ? 0 : term)))

    when :effective_addresses
      association = associated(name)
      associated = Resource.new(association).search_any(value)
      relation.where(id: associated.where(addressable_type: klass.name).select(:addressable_id))

    when :effective_roles
      relation.with_role(term)

    when :time
      if term.respond_to?(:strftime)
        timed = relation.where("EXTRACT(hour from #{sql_column}) = ?", term.utc.hour)
        timed = timed.where("EXTRACT(minute from #{sql_column}) = ?", term.utc.min) if term.min > 0
        timed
      else
        relation.none # It's an invalid entered date 
      end
  end

  return searched if searched

  # Simple operation search
  # The Arel operator eq and matches bug out with serialized Array columns. So we avoid for datatables usage.

  case operation
    when :eq then relation.where("#{sql_column} = ?", term)
    when :matches then search_columns_by_ilike_term(relation, term, columns: (sql_column.presence || name))
    when :not_eq then relation.where(attribute.not_eq(term))
    when :does_not_match then relation.where(attribute.does_not_match("%#{term}%"))
    when :starts_with then relation.where(attribute.matches("#{term}%"))
    when :ends_with then relation.where(attribute.matches("%#{term}"))
    when :gt then relation.where(attribute.gt(term))
    when :gteq then relation.where(attribute.gteq(term))
    when :lt then relation.where(attribute.lt(term))
    when :lteq then relation.where(attribute.lteq(term))
    when :days_ago_eq
      date = Time.zone.now.advance(days: -term.to_i)
      relation.where("#{sql_column} >= ? AND #{sql_column} <= ?", date.beginning_of_day, date.end_of_day)
    when :days_ago_lteq # 30 days or less ago.
      date = Time.zone.now.advance(days: -term.to_i)
      relation.where("#{sql_column} >= ?", date)
    when :days_ago_gteq # 30 days or more ago
      date = Time.zone.now.advance(days: -term.to_i)
      relation.where("#{sql_column} <= ?", date)
    else raise("Unexpected operation: #{operation}")
  end
end