Class: HealthDataStandards::Export::RenderingContext

Inherits:
OpenStruct
  • Object
show all
Includes:
ViewHelper
Defined in:
lib/health-data-standards/export/rendering_context.rb

Overview

Used to actually render stuff. A RenderingContext needs to be set up with a template helper and may be provided with extensions.

:call-seq:

template_helper = HealthDataStandards::Export::TemplateHelper.new('cat1', 'cat1')
rendering_context = HealthDataStandards::Export::RenderingContext.new
rendering_context.template_helper = template_helper
rendering_context.extensions = [HealthDataStandards::Export::Helper::Cat1ViewHelper]

In this case, a RenderingContext is being set up to generate Category 1 files. It is passed a template helper to finds the correct ERb templates to render from. It is also given an extension. This is just a Ruby Module which will have its methods exposed to the templates. RenderingContext will assume that extensions is an Array and will include multiple extensions if more than one is provided.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from ViewHelper

#clean_hash_code_system, #clean_hash_id, #code_display, #convert_field_to_hash, #create_code_display_string, #create_code_string, #create_laterality_code_string, #create_translations_code_string, #dose_quantity, #fulfillment_quantity, #identifier_for, #is_bool?, #is_num?, #status_code_for, #time_if_not_nil, #ucum_for_dose_quantity, #value_or_null_flavor

Instance Attribute Details

#extensions ⇒ Object

Returns the value of attribute extensions.



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# File 'lib/health-data-standards/export/rendering_context.rb', line 20

def extensions
  @extensions
end

#template_helper ⇒ Object

Returns the value of attribute template_helper.



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# File 'lib/health-data-standards/export/rendering_context.rb', line 20

def template_helper
  @template_helper
end

Instance Method Details

#my_binding ⇒ Object 



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# File 'lib/health-data-standards/export/rendering_context.rb', line 22

def my_binding
  binding
end

#render(params) ⇒ Object 



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# File 'lib/health-data-standards/export/rendering_context.rb', line 28

def render(params)
  erb = nil
  ident = nil
  if params[:template]
    erb = @template_helper.template(params[:template])
  elsif params[:partial]
    erb = @template_helper.partial(params[:partial])
    if params[:collection] 
      ident = params[:id] || params[:partial]
    end
  end

  collection = params[:collection] || [true]
  collection.map do |item| 
    locals = params[:locals]
    locals ||= {}
    if ident
      locals[ident] = item 
    end
    rendering_context = RenderingContext.new(locals)
    rendering_context.template_helper = @template_helper
    if @extensions.present?
      rendering_context.extensions = @extensions
      @extensions.each do |extension|
        rendering_context.extend(extension)
      end
    end
    erb.result(rendering_context.my_binding)
  end.join
end