Class: Document

Inherits:
ApplicationRecord show all
Includes:
Housekeeping, Shared::Identifiers, Shared::IsData, Shared::Notes, Shared::Tags, SoftValidation
Defined in:
app/models/document.rb

Overview

A Document is digital file that has text inhering within it. Handled formats are pdfs and txt at present.

Documents are to Documentation as Images are to Depictions.

Constant Summary

Constants included from SoftValidation

SoftValidation::ANCESTORS_WITH_SOFT_VALIDATIONS

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from SoftValidation

#clear_soft_validations, #fix_for, #fix_soft_validations, #soft_fixed?, #soft_valid?, #soft_validate, #soft_validated?, #soft_validations, #soft_validators

Methods included from Shared::IsData

#errors_excepting, #full_error_messages_excepting, #identical, #is_community?, #is_destroyable?, #is_editable?, #is_in_use?, #is_in_users_projects?, #metamorphosize, #similar

Methods included from Shared::Notes

#concatenated_notes_string, #reject_notes

Methods included from Housekeeping

#has_polymorphic_relationship?

Methods inherited from ApplicationRecord

transaction_with_retry

Instance Attribute Details

#document_file_content_type ⇒ String

Returns the content type (mime).

Returns:

  • (String) —

    the content type (mime)



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# File 'app/models/document.rb', line 36

class Document < ApplicationRecord
  include Housekeeping
  include Shared::Identifiers
  include Shared::Notes
  include Shared::Tags
  include Shared::IsData
  include SoftValidation

  attr_accessor :initialize_start_page

  before_destroy :check_for_documentation, prepend: true

  has_many :documentation, dependent: :destroy, inverse_of: :document
  has_many :sources, through: :documentation, source_type: 'Source', source: 'documentation_object'

  has_attached_file :document_file,
    filename_cleaner:  Utilities::CleanseFilename

  validates_attachment_content_type :document_file, content_type: ['application/octet-stream', 'application/pdf', 'text/plain', 'text/xml']
  validates_attachment_presence :document_file
  validates_attachment_size :document_file, greater_than: 1.bytes

  accepts_nested_attributes_for :documentation, allow_destroy: true, reject_if: :reject_documentation

  before_save :set_pdf_metadata, if: -> {
    ActiveSupport::Deprecation.silence do
      changed_attributes.include?('document_file_file_size') &&
        document_file_content_type =~ /pdf/
    end
  }

  def set_pages_by_start(sp = 1)
    write_attribute(:page_map, get_page_map(sp))
  end

  def get_page_map(sp = 1)
    m = {}
    if page_total && sp
      (0..(page_total - 1)).each do |p|
        m[p + 1] = (p + sp.to_i).to_s
      end
    end
    m
  end

  # @return [Array]
  def pdf_page_for(printed_page)
    p = []
    page_map.each do |pdf_page, v|
      p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
    end
    p
  end

  def set_page_map_page(index, page)
    return false if index.kind_of?(Array) && page.kind_of?(Array)
    return false if !index.kind_of?(Array) && (index.to_i > page_total)

    p = page_map

    [index].flatten.map(&:to_s).each do |i|
      if page.kind_of?(Array)
        p[i] = page.map(&:to_s)
      else
        p[i] = page.to_s
      end
    end

    update_attribute(:page_map, p)
  end

  def initialize_start_page=(value)
    write_attribute(:page_map, get_page_map(value))
    @initialize_start_page = value
  end

  def pdftotext
    `pdftotext -layout #{document_file.path} -`
  end

  protected

  def check_for_documentation
    if documentation.count > 1
      errors.add(:base, 'document is used in more than one place, remove documentation first')
      throw :abort
    end
  end

  def set_pdf_metadata
    begin
      File.open(document_file.staged_path, 'rb') do |io|
        reader = PDF::Reader.new(io)
        write_attribute(:page_total, reader.page_count)
      end
    rescue PDF::Reader::MalformedPDFError
      errors.add(:base, 'pdf is malformed')
    rescue PDF::Reader::EncryptedPDFError
      errors.add(:base, 'pdf is encrypted')
    rescue PDF::Reader::UnsupportedFeatureError
      errors.add(:base, 'pdf contains features not supported by the software')
    end
    set_pages_by_start(initialize_start_page) if initialize_start_page
  end

  def reject_documentation(attributed)
    attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
  end
end

#document_file_file_name ⇒ String

the name of the file as uploaded by the user.

Returns:

  • (String) 


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# File 'app/models/document.rb', line 36

class Document < ApplicationRecord
  include Housekeeping
  include Shared::Identifiers
  include Shared::Notes
  include Shared::Tags
  include Shared::IsData
  include SoftValidation

  attr_accessor :initialize_start_page

  before_destroy :check_for_documentation, prepend: true

  has_many :documentation, dependent: :destroy, inverse_of: :document
  has_many :sources, through: :documentation, source_type: 'Source', source: 'documentation_object'

  has_attached_file :document_file,
    filename_cleaner:  Utilities::CleanseFilename

  validates_attachment_content_type :document_file, content_type: ['application/octet-stream', 'application/pdf', 'text/plain', 'text/xml']
  validates_attachment_presence :document_file
  validates_attachment_size :document_file, greater_than: 1.bytes

  accepts_nested_attributes_for :documentation, allow_destroy: true, reject_if: :reject_documentation

  before_save :set_pdf_metadata, if: -> {
    ActiveSupport::Deprecation.silence do
      changed_attributes.include?('document_file_file_size') &&
        document_file_content_type =~ /pdf/
    end
  }

  def set_pages_by_start(sp = 1)
    write_attribute(:page_map, get_page_map(sp))
  end

  def get_page_map(sp = 1)
    m = {}
    if page_total && sp
      (0..(page_total - 1)).each do |p|
        m[p + 1] = (p + sp.to_i).to_s
      end
    end
    m
  end

  # @return [Array]
  def pdf_page_for(printed_page)
    p = []
    page_map.each do |pdf_page, v|
      p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
    end
    p
  end

  def set_page_map_page(index, page)
    return false if index.kind_of?(Array) && page.kind_of?(Array)
    return false if !index.kind_of?(Array) && (index.to_i > page_total)

    p = page_map

    [index].flatten.map(&:to_s).each do |i|
      if page.kind_of?(Array)
        p[i] = page.map(&:to_s)
      else
        p[i] = page.to_s
      end
    end

    update_attribute(:page_map, p)
  end

  def initialize_start_page=(value)
    write_attribute(:page_map, get_page_map(value))
    @initialize_start_page = value
  end

  def pdftotext
    `pdftotext -layout #{document_file.path} -`
  end

  protected

  def check_for_documentation
    if documentation.count > 1
      errors.add(:base, 'document is used in more than one place, remove documentation first')
      throw :abort
    end
  end

  def set_pdf_metadata
    begin
      File.open(document_file.staged_path, 'rb') do |io|
        reader = PDF::Reader.new(io)
        write_attribute(:page_total, reader.page_count)
      end
    rescue PDF::Reader::MalformedPDFError
      errors.add(:base, 'pdf is malformed')
    rescue PDF::Reader::EncryptedPDFError
      errors.add(:base, 'pdf is encrypted')
    rescue PDF::Reader::UnsupportedFeatureError
      errors.add(:base, 'pdf contains features not supported by the software')
    end
    set_pages_by_start(initialize_start_page) if initialize_start_page
  end

  def reject_documentation(attributed)
    attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
  end
end

#document_file_file_size ⇒ Integer

Returns size of the document in K.

Returns:

  • (Integer) —

    size of the document in K



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# File 'app/models/document.rb', line 36

class Document < ApplicationRecord
  include Housekeeping
  include Shared::Identifiers
  include Shared::Notes
  include Shared::Tags
  include Shared::IsData
  include SoftValidation

  attr_accessor :initialize_start_page

  before_destroy :check_for_documentation, prepend: true

  has_many :documentation, dependent: :destroy, inverse_of: :document
  has_many :sources, through: :documentation, source_type: 'Source', source: 'documentation_object'

  has_attached_file :document_file,
    filename_cleaner:  Utilities::CleanseFilename

  validates_attachment_content_type :document_file, content_type: ['application/octet-stream', 'application/pdf', 'text/plain', 'text/xml']
  validates_attachment_presence :document_file
  validates_attachment_size :document_file, greater_than: 1.bytes

  accepts_nested_attributes_for :documentation, allow_destroy: true, reject_if: :reject_documentation

  before_save :set_pdf_metadata, if: -> {
    ActiveSupport::Deprecation.silence do
      changed_attributes.include?('document_file_file_size') &&
        document_file_content_type =~ /pdf/
    end
  }

  def set_pages_by_start(sp = 1)
    write_attribute(:page_map, get_page_map(sp))
  end

  def get_page_map(sp = 1)
    m = {}
    if page_total && sp
      (0..(page_total - 1)).each do |p|
        m[p + 1] = (p + sp.to_i).to_s
      end
    end
    m
  end

  # @return [Array]
  def pdf_page_for(printed_page)
    p = []
    page_map.each do |pdf_page, v|
      p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
    end
    p
  end

  def set_page_map_page(index, page)
    return false if index.kind_of?(Array) && page.kind_of?(Array)
    return false if !index.kind_of?(Array) && (index.to_i > page_total)

    p = page_map

    [index].flatten.map(&:to_s).each do |i|
      if page.kind_of?(Array)
        p[i] = page.map(&:to_s)
      else
        p[i] = page.to_s
      end
    end

    update_attribute(:page_map, p)
  end

  def initialize_start_page=(value)
    write_attribute(:page_map, get_page_map(value))
    @initialize_start_page = value
  end

  def pdftotext
    `pdftotext -layout #{document_file.path} -`
  end

  protected

  def check_for_documentation
    if documentation.count > 1
      errors.add(:base, 'document is used in more than one place, remove documentation first')
      throw :abort
    end
  end

  def set_pdf_metadata
    begin
      File.open(document_file.staged_path, 'rb') do |io|
        reader = PDF::Reader.new(io)
        write_attribute(:page_total, reader.page_count)
      end
    rescue PDF::Reader::MalformedPDFError
      errors.add(:base, 'pdf is malformed')
    rescue PDF::Reader::EncryptedPDFError
      errors.add(:base, 'pdf is encrypted')
    rescue PDF::Reader::UnsupportedFeatureError
      errors.add(:base, 'pdf contains features not supported by the software')
    end
    set_pages_by_start(initialize_start_page) if initialize_start_page
  end

  def reject_documentation(attributed)
    attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
  end
end

#document_file_updated_at ⇒ Timestamp

Returns last time this document was updated.

Returns:

  • (Timestamp) —

    last time this document was updated



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# File 'app/models/document.rb', line 36

class Document < ApplicationRecord
  include Housekeeping
  include Shared::Identifiers
  include Shared::Notes
  include Shared::Tags
  include Shared::IsData
  include SoftValidation

  attr_accessor :initialize_start_page

  before_destroy :check_for_documentation, prepend: true

  has_many :documentation, dependent: :destroy, inverse_of: :document
  has_many :sources, through: :documentation, source_type: 'Source', source: 'documentation_object'

  has_attached_file :document_file,
    filename_cleaner:  Utilities::CleanseFilename

  validates_attachment_content_type :document_file, content_type: ['application/octet-stream', 'application/pdf', 'text/plain', 'text/xml']
  validates_attachment_presence :document_file
  validates_attachment_size :document_file, greater_than: 1.bytes

  accepts_nested_attributes_for :documentation, allow_destroy: true, reject_if: :reject_documentation

  before_save :set_pdf_metadata, if: -> {
    ActiveSupport::Deprecation.silence do
      changed_attributes.include?('document_file_file_size') &&
        document_file_content_type =~ /pdf/
    end
  }

  def set_pages_by_start(sp = 1)
    write_attribute(:page_map, get_page_map(sp))
  end

  def get_page_map(sp = 1)
    m = {}
    if page_total && sp
      (0..(page_total - 1)).each do |p|
        m[p + 1] = (p + sp.to_i).to_s
      end
    end
    m
  end

  # @return [Array]
  def pdf_page_for(printed_page)
    p = []
    page_map.each do |pdf_page, v|
      p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
    end
    p
  end

  def set_page_map_page(index, page)
    return false if index.kind_of?(Array) && page.kind_of?(Array)
    return false if !index.kind_of?(Array) && (index.to_i > page_total)

    p = page_map

    [index].flatten.map(&:to_s).each do |i|
      if page.kind_of?(Array)
        p[i] = page.map(&:to_s)
      else
        p[i] = page.to_s
      end
    end

    update_attribute(:page_map, p)
  end

  def initialize_start_page=(value)
    write_attribute(:page_map, get_page_map(value))
    @initialize_start_page = value
  end

  def pdftotext
    `pdftotext -layout #{document_file.path} -`
  end

  protected

  def check_for_documentation
    if documentation.count > 1
      errors.add(:base, 'document is used in more than one place, remove documentation first')
      throw :abort
    end
  end

  def set_pdf_metadata
    begin
      File.open(document_file.staged_path, 'rb') do |io|
        reader = PDF::Reader.new(io)
        write_attribute(:page_total, reader.page_count)
      end
    rescue PDF::Reader::MalformedPDFError
      errors.add(:base, 'pdf is malformed')
    rescue PDF::Reader::EncryptedPDFError
      errors.add(:base, 'pdf is encrypted')
    rescue PDF::Reader::UnsupportedFeatureError
      errors.add(:base, 'pdf contains features not supported by the software')
    end
    set_pages_by_start(initialize_start_page) if initialize_start_page
  end

  def reject_documentation(attributed)
    attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
  end
end

#initialize_start_page ⇒ Object

Returns the value of attribute initialize_start_page.



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# File 'app/models/document.rb', line 44

def initialize_start_page
  @initialize_start_page
end

#page_map ⇒ Hash

Returns a map of PDF page to printed page #, pages index starts at 1 behaviour:

if no integer exists for a PDF page then page is assumed to be the page # of the PDF (almost never the real case)
if an integer is provided it points to the page(s) represented in print
e.g.:
   { "1": "300",
     "2": ["301", "302", "xi"]
   }
mapping can be many to many:
   { "1": ["300", "301"]
     "2": ["301"]
   } ... printed page 301 is on pdf pages 1,2; page 1 contains printed pages 300, and part of 301.

Returns:

  • (Hash) —

    a map of PDF page to printed page #, pages index starts at 1 behaviour:

    if no integer exists for a PDF page then page is assumed to be the page # of the PDF (almost never the real case)
if an integer is provided it points to the page(s) represented in print
e.g.:
   { "1": "300",
     "2": ["301", "302", "xi"]
   }
mapping can be many to many:
   { "1": ["300", "301"]
     "2": ["301"]
   } ... printed page 301 is on pdf pages 1,2; page 1 contains printed pages 300, and part of 301



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# File 'app/models/document.rb', line 36

class Document < ApplicationRecord
  include Housekeeping
  include Shared::Identifiers
  include Shared::Notes
  include Shared::Tags
  include Shared::IsData
  include SoftValidation

  attr_accessor :initialize_start_page

  before_destroy :check_for_documentation, prepend: true

  has_many :documentation, dependent: :destroy, inverse_of: :document
  has_many :sources, through: :documentation, source_type: 'Source', source: 'documentation_object'

  has_attached_file :document_file,
    filename_cleaner:  Utilities::CleanseFilename

  validates_attachment_content_type :document_file, content_type: ['application/octet-stream', 'application/pdf', 'text/plain', 'text/xml']
  validates_attachment_presence :document_file
  validates_attachment_size :document_file, greater_than: 1.bytes

  accepts_nested_attributes_for :documentation, allow_destroy: true, reject_if: :reject_documentation

  before_save :set_pdf_metadata, if: -> {
    ActiveSupport::Deprecation.silence do
      changed_attributes.include?('document_file_file_size') &&
        document_file_content_type =~ /pdf/
    end
  }

  def set_pages_by_start(sp = 1)
    write_attribute(:page_map, get_page_map(sp))
  end

  def get_page_map(sp = 1)
    m = {}
    if page_total && sp
      (0..(page_total - 1)).each do |p|
        m[p + 1] = (p + sp.to_i).to_s
      end
    end
    m
  end

  # @return [Array]
  def pdf_page_for(printed_page)
    p = []
    page_map.each do |pdf_page, v|
      p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
    end
    p
  end

  def set_page_map_page(index, page)
    return false if index.kind_of?(Array) && page.kind_of?(Array)
    return false if !index.kind_of?(Array) && (index.to_i > page_total)

    p = page_map

    [index].flatten.map(&:to_s).each do |i|
      if page.kind_of?(Array)
        p[i] = page.map(&:to_s)
      else
        p[i] = page.to_s
      end
    end

    update_attribute(:page_map, p)
  end

  def initialize_start_page=(value)
    write_attribute(:page_map, get_page_map(value))
    @initialize_start_page = value
  end

  def pdftotext
    `pdftotext -layout #{document_file.path} -`
  end

  protected

  def check_for_documentation
    if documentation.count > 1
      errors.add(:base, 'document is used in more than one place, remove documentation first')
      throw :abort
    end
  end

  def set_pdf_metadata
    begin
      File.open(document_file.staged_path, 'rb') do |io|
        reader = PDF::Reader.new(io)
        write_attribute(:page_total, reader.page_count)
      end
    rescue PDF::Reader::MalformedPDFError
      errors.add(:base, 'pdf is malformed')
    rescue PDF::Reader::EncryptedPDFError
      errors.add(:base, 'pdf is encrypted')
    rescue PDF::Reader::UnsupportedFeatureError
      errors.add(:base, 'pdf contains features not supported by the software')
    end
    set_pages_by_start(initialize_start_page) if initialize_start_page
  end

  def reject_documentation(attributed)
    attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
  end
end

Instance Method Details

#check_for_documentation ⇒ Object (protected) 



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# File 'app/models/document.rb', line 118

def check_for_documentation
  if documentation.count > 1
    errors.add(:base, 'document is used in more than one place, remove documentation first')
    throw :abort
  end
end

#get_page_map(sp = 1) ⇒ Object 



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# File 'app/models/document.rb', line 71

def get_page_map(sp = 1)
  m = {}
  if page_total && sp
    (0..(page_total - 1)).each do |p|
      m[p + 1] = (p + sp.to_i).to_s
    end
  end
  m
end

#pdf_page_for(printed_page) ⇒ Array

Returns:

  • (Array) 


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# File 'app/models/document.rb', line 82

def pdf_page_for(printed_page)
  p = []
  page_map.each do |pdf_page, v|
    p.push(pdf_page) if printed_page.to_s == v || v.include?(printed_page.to_s)
  end
  p
end

#pdftotext ⇒ Object 



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# File 'app/models/document.rb', line 112

def pdftotext
  `pdftotext -layout #{document_file.path} -`
end

#reject_documentation(attributed) ⇒ Object (protected) 



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# File 'app/models/document.rb', line 141

def reject_documentation(attributed)
  attributed['type'].blank? || attributed['documentation_object'].blank? && (attributed['documentation_object_id'].blank? && attributed['documentation_object_type'].blank?)
end

#set_page_map_page(index, page) ⇒ Object 



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# File 'app/models/document.rb', line 90

def set_page_map_page(index, page)
  return false if index.kind_of?(Array) && page.kind_of?(Array)
  return false if !index.kind_of?(Array) && (index.to_i > page_total)

  p = page_map

  [index].flatten.map(&:to_s).each do |i|
    if page.kind_of?(Array)
      p[i] = page.map(&:to_s)
    else
      p[i] = page.to_s
    end
  end

  update_attribute(:page_map, p)
end

#set_pages_by_start(sp = 1) ⇒ Object 



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# File 'app/models/document.rb', line 67

def set_pages_by_start(sp = 1)
  write_attribute(:page_map, get_page_map(sp))
end

#set_pdf_metadata ⇒ Object (protected) 



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# File 'app/models/document.rb', line 125

def set_pdf_metadata
  begin
    File.open(document_file.staged_path, 'rb') do |io|
      reader = PDF::Reader.new(io)
      write_attribute(:page_total, reader.page_count)
    end
  rescue PDF::Reader::MalformedPDFError
    errors.add(:base, 'pdf is malformed')
  rescue PDF::Reader::EncryptedPDFError
    errors.add(:base, 'pdf is encrypted')
  rescue PDF::Reader::UnsupportedFeatureError
    errors.add(:base, 'pdf contains features not supported by the software')
  end
  set_pages_by_start(initialize_start_page) if initialize_start_page
end