Class: Renalware::Events::EventPdf

Inherits:
Object
  • Object
show all
Includes:
Prawn::View
Defined in:
app/pdfs/renalware/events/event_pdf.rb

Overview

We have used wicked_pdf (which shells out to wkhtmltopdf) up to know, but using prawn here as it Event PDFs are somewhat simpler, and there is no extant html equivalent we can render. Its also a useful test to see if this is a better approach all round. It is certainly much quicker and less resource intensive to create the PDFs.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(event) ⇒ EventPdf

Returns a new instance of EventPdf.



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 17

def initialize(event)
  @event = event
  build
end

Instance Attribute Details

#event ⇒ Object (readonly)

Returns the value of attribute event.



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 14

def event
  @event
end

Instance Method Details

#build ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 22

def build
  render_hospital_centre_info
  render_patient_identifiers
  render_common_event_fields
  render_specific_event_fields(event.document)
  render_notes
  self
end

#interpret_new_lines_in(text) ⇒ Object

Ensure any new line characters in a string are interpreted as actual new lines. This lets use /n in seed data and in the database.



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 99

def interpret_new_lines_in(text)
  text&.gsub('\n', "\n")
end

#output_html_as_text_but_preserving_paragraph_breaks(text:, strip_tags: true, **args) ⇒ Object

Create new line if there is a
. If there is an empty line (caused by
) move down to indicate a new paragraph.



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 105

def output_html_as_text_but_preserving_paragraph_breaks(text:, strip_tags: true, **args)
  return if text.blank?

  text.split("<br>").each do |paragraph|
    if strip_tags
      text ActionView::Base.full_sanitizer.sanitize(paragraph), **args
    else
      text paragraph, **args
    end
    move_down(10) if ActionView::Base.full_sanitizer.sanitize(paragraph).blank?
  end
end

#render_common_event_fields ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 54

def render_common_event_fields
  text "Date: #{I18n.l(event.date_time)}"
  move_down 10
  if event.respond_to?(:description)
    text "<u>Description</u>", inline_format: true
    move_down 5
    text event.description
    move_down 10
  end
end

#render_header ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 31

def render_header
  font_size 12
  text title
  move_down 10
  text event.patient.to_s, style: :bold
  move_down 10
end

#render_hospital_centre_info ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 79

def render_hospital_centre_info
  bounding_box([340, cursor], width: 200) do
    image_path = "app/assets/images/renalware/nhs_a4_letter_logo_black.png"
    image Renalware::Engine.root.join(image_path), height: 30, position: :right
    move_down 10
    text event.hospital_centre_trust_name, align: :right
    text event.hospital_centre_trust_caption, align: :right
    font_size 8
    output_html_as_text_but_preserving_paragraph_breaks(
      text: interpret_new_lines_in(event.hospital_centre_info),
      strip_tags: false,
      align: :right,
      inline_format: true
    )
    font_size 10
  end
end

#render_notes ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 73

def render_notes
  text "<u>Notes</u>", inline_format: true
  move_down 5
  output_html_as_text_but_preserving_paragraph_breaks(text: event.notes)
end

#render_patient_identifiers ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 39

def render_patient_identifiers
  move_cursor_to 675
  font_size 10
  bounding_box([0, cursor], width: 340) do
    render_header
    font_size 10
    text "DOB: #{I18n.l(patient.born_on)}"
    text "NHS: #{patient.nhs_number}"
    patient.hospital_identifiers.all.each do |key, value|
      text "#{key}: #{value}"
    end
    move_down 10
  end
end

#render_specific_event_fields(document) ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 65

def render_specific_event_fields(document)
  document.attributes.each do |name, value|
    # could handle recursive documents here but none exists ATM even in HEROIC
    text "#{document.class.human_attribute_name(name)}:    #{value}"
  end
  move_down 10
end

#title ⇒ Object 



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# File 'app/pdfs/renalware/events/event_pdf.rb', line 118

def title
  event_type.title || event_type.name
end