Class: Document::BboxValidator

Inherits:
ActiveModel::Validator
  • Object
show all
Defined in:
app/models/document/bbox_validator.rb

Overview

BboxValidator

Instance Method Summary collapse

Instance Method Details

#proper_bounding_box(record, valid_geom) ⇒ Object 



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# File 'app/models/document/bbox_validator.rb', line 25

def proper_bounding_box(record, valid_geom)
  # Min/Max
  min_max = [-180.0, -90.0, 180.0, 90.0]

  # "W,S,E,N" to [W,S,E,N]
  unless record.send(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box]).split(",").nil?
    geom = record.send(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box]).split(",")

    if geom.empty?
      valid_geom = true
    elsif geom.size != 4
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "invalid W,S,E,N syntax")
    # W
    elsif geom[0].to_f < min_max[0]
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "invalid minX present")
    # S
    elsif geom[1].to_f < min_max[1]
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "invalid minY present")
    # E
    elsif geom[2].to_f > min_max[2]
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "invalid maX present")
    # N
    elsif geom[3].to_f > min_max[3]
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "invalid maxY present")
    # Solr - maxY must be >= minY
    elsif geom[1].to_f >= geom[3].to_f
      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box], "maxY must be >= minY")
    end

    # Reject ENVELOPE(-118.00.0000,-88.00.0000,51.00.0000,42.00.0000
    # - Double period float-ish things?
    geom.each do |val|
      next unless val.count(".") >= 2

      valid_geom = false
      record.errors.add(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box],
        "invalid ENVELOPE(W,E,N,S) syntax - found multiple periods in a coordinate value.")
    end
  end

  valid_geom
end

#validate(record) ⇒ Object 



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# File 'app/models/document/bbox_validator.rb', line 12

def validate(record)
  # Assume true for empty values
  valid_geom = true

  # Sane for W,S,E,N?
  unless record.send(GeoblacklightAdmin::Schema.instance.solr_fields[:bounding_box]).nil?
    proper_bounding_box(record,
      valid_geom)
  end

  valid_geom
end