Class: CrudComponents::Fields::AttachmentField

Inherits:
Base
  • Object
show all
Defined in:
lib/crud_components/fields/attachment_field.rb

Overview

Active Storage attachment: rendered by content type — image inline, previewable (e.g. PDF) as a preview, otherwise an icon + filename link.

Constant Summary

Constants inherited from Base

Base::NON_EDITABLE_COLUMNS

Instance Attribute Summary

Attributes inherited from Base

#facets, #model, #name, #options

Instance Method Summary collapse

Methods inherited from Base

#apply_filter, #apply_filter_facet, #apply_sort, #column, #custom_header?, #declared_preloads, #derived_sortable?, #editable?, #editable_permitted?, #filter_choices, #filter_control, #filter_facet, #filter_includes_null?, #filterable?, #form_partial, #group_label, #group_model, #header, #header_actions, #human_name, #initialize, #nullable?, #permitted?, #picker_label, #range_filter?, #render_block, #renderer, #renderer_options, #search_spec_entry, #sort_facet, #sortable?, #typed_filter, #value

Constructor Details

This class inherits a constructor from CrudComponents::Fields::Base

Instance Method Details

#apply_derived_filter(scope, value: nil) ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 24

def apply_derived_filter(scope, value: nil, **)
  case value
  when CrudComponents::PRESENT_FILTER_VALUE then scope.where.associated(attachment_reflection)
  when CrudComponents::ABSENT_FILTER_VALUE  then scope.where.missing(attachment_reflection)
  else scope
  end
end

#default_editable? ⇒ Boolean

── forms ────────────────────────────────────────────────────────────

Returns:

  • (Boolean) 


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# File 'lib/crud_components/fields/attachment_field.rb', line 33

def default_editable? = true

#default_renderer ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 6

def default_renderer = :attachment

#derived_filter_control ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 22

def derived_filter_control = :presence

#derived_filterable? ⇒ Boolean

── filtering ────────────────────────────────────────────────────────── An attachment has no value to type into a box, but "has a cover / has no cover" is the natural question — so it filters by presence: a 3-state any/present/absent control that composes into the query as an EXISTS / NOT EXISTS over the backing *_attachment(s) association.

Returns:

  • (Boolean) 


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# File 'lib/crud_components/fields/attachment_field.rb', line 21

def derived_filterable? = true

#eager_load ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 12

def eager_load
  [attachment_reflection, *declared_preloads]
end

#form_control ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 34

def form_control = :file

#many? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/crud_components/fields/attachment_field.rb', line 8

def many?
  @many ||= model.reflect_on_attachment(name).macro == :has_many_attached
end

#permit_param ⇒ Object 



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# File 'lib/crud_components/fields/attachment_field.rb', line 35

def permit_param = many? ? { name => [] } : name