Class: Uploader::Helpers::FieldTag

Inherits:
Object
  • Object
show all
Defined in:
lib/uploader/helpers/field_tag.rb

Constant Summary collapse

RESERVED_OPTIONS_KEYS = 
%w[method_name object_name theme value object sortable].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object_name, method_name, template, options = {}) ⇒ FieldTag

Wrapper for render uploader field Usage:

uploader = FieldTag.new(object_name, method_name, template, options)
uploader.render



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# File 'lib/uploader/helpers/field_tag.rb', line 18

def initialize(object_name, method_name, template, options = {}) #:nodoc:
  @options = { object_name: object_name, method_name: method_name }.merge(options)
  @template = template

  @theme = (@options.delete(:theme) || 'default')
  @value = @options.delete(:value) if @options.key?(:value)

  @object = @options.delete(:object) if @options.key?(:object)
  @object ||= @template.instance_variable_get("@#{object_name}")
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/uploader/helpers/field_tag.rb', line 8

def object
  @object
end

#template ⇒ Object (readonly)

Returns the value of attribute template.



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# File 'lib/uploader/helpers/field_tag.rb', line 8

def template
  @template
end

#theme ⇒ Object (readonly)

Returns the value of attribute theme.



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# File 'lib/uploader/helpers/field_tag.rb', line 8

def theme
  @theme
end

Instance Method Details

#attachments_path(options = {}) ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 70

def attachments_path(options = {})
  options = @object.fileupload_params(method_name).merge(options)
  uploader.attachments_path(options)
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uploader/helpers/field_tag.rb', line 58

def exists?
  values.map(&:persisted?).any?
end

#extension_whitelist ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 87

def extension_whitelist
  @extension_whitelist ||= extract_extension_whitelist
end

#id ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 34

def id
  @id ||= @template.dom_id(@object, [method_name, 'uploader'].join('_'))
end

#input_html ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 75

def input_html
  @input_html ||= { multiple: multiple?, class: 'uploader' }.merge(input_html_options)
  @input_html[:data] ||= {}
  @input_html[:data][:url] ||= attachments_path(singular: !multiple?)
  @input_html[:accept] ||= extension_whitelist
  @input_html
end

#input_html_options ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 83

def input_html_options
  @options.reject { |key, _value| RESERVED_OPTIONS_KEYS.include?(key.to_s) }
end

#klass ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 66

def klass
  @klass ||= @object.fileupload_klass(method_name)
end

#method_name ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 38

def method_name
  @options[:method_name]
end

#multiple? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uploader/helpers/field_tag.rb', line 46

def multiple?
  @object.fileupload_multiple?(method_name)
end

#object_name ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 42

def object_name
  @options[:object_name]
end

#render(locals = {}) ⇒ Object

:nodoc:



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# File 'lib/uploader/helpers/field_tag.rb', line 29

def render(locals = {}) #:nodoc:
  locals = { field: self }.merge(locals)
  @template.render(partial: "uploader/#{@theme}/container", locals: locals)
end

#sortable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uploader/helpers/field_tag.rb', line 62

def sortable?
  @options[:sortable] == true
end

#value ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 50

def value
  @value ||= @object.fileupload_asset(method_name)
end

#values ⇒ Object 



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# File 'lib/uploader/helpers/field_tag.rb', line 54

def values
  Array.wrap(value)
end