Module: Alchemy::Page::PageElements

Extended by:
ActiveSupport::Concern
Included in:
Alchemy::Page
Defined in:
app/models/alchemy/page/page_elements.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#available_element_definitions(only_element_named = nil) ⇒ Object

All available element definitions that can actually be placed on current page.

It extracts all definitions that are unique or limited and already on page.

Example of unique element:

- name: headline
  unique: true
  contents:
  - name: headline
    type: EssenceText

Example of limited element:

- name: article
  amount: 2
  contents:
  - name: text
    type: EssenceRichtext



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# File 'app/models/alchemy/page/page_elements.rb', line 74

def available_element_definitions(only_element_named = nil)
  @_element_definitions ||= if only_element_named
    definition = Element.definition_by_name(only_element_named)
    element_definitions_by_name(definition['nestable_elements'])
  else
    element_definitions
  end

  return [] if @_element_definitions.blank?

  existing_elements = all_elements.not_nested.not_trashed
  @_existing_element_names = existing_elements.pluck(:name)
  delete_unique_element_definitions!
  delete_outnumbered_element_definitions!

  @_element_definitions
end

#available_element_names ⇒ Object

All names of elements that can actually be placed on current page.



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# File 'app/models/alchemy/page/page_elements.rb', line 94

def available_element_names
  @_available_element_names ||= available_element_definitions.map { |e| e['name'] }
end

#available_elements_within_current_scope(parent) ⇒ Object

Available element definitions excluding nested unique elements.



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# File 'app/models/alchemy/page/page_elements.rb', line 100

def available_elements_within_current_scope(parent)
  @_available_elements = if parent
    parents_unique_nested_elements = parent.nested_elements.where(unique: true).pluck(:name)
    available_element_definitions(parent.name).reject do |e|
      parents_unique_nested_elements.include? e['name']
    end
  else
    available_element_definitions
  end
end

#descendent_element_definitions ⇒ Object

All element definitions defined for page’s page layout including nestable element definitions



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# File 'app/models/alchemy/page/page_elements.rb', line 122

def descendent_element_definitions
  definitions = element_definitions_by_name(element_definition_names)
  definitions.select { |d| d.key?('nestable_elements') }.each do |d|
    definitions += element_definitions_by_name(d['nestable_elements'])
  end
  definitions.uniq { |d| d['name'] }
end

#element_definition_names ⇒ Object Also known as: element_names_from_definition

All names of elements that are defined in the page definition.

Assign elements to a page in config/alchemy/page_layouts.yml.

Example of page_layouts.yml:

- name: contact
  elements: [headline, contactform]



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# File 'app/models/alchemy/page/page_elements.rb', line 139

def element_definition_names
  definition['elements'] || []
end

#element_definitions ⇒ Object

All element definitions defined for page’s page layout

Warning: Since elements can be unique or limited in number, it is more safe to ask for available_element_definitions



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# File 'app/models/alchemy/page/page_elements.rb', line 116

def element_definitions
  @_element_definitions ||= element_definitions_by_name(element_definition_names)
end

#element_definitions_by_name(names) ⇒ Array

Element definitions with given name(s)

Parameters:

  • one (Array || String) —

    or many Alchemy::Element names. Pass ‘all’ to get all Element definitions

Returns:

  • (Array) —

    An Array of element definitions



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# File 'app/models/alchemy/page/page_elements.rb', line 152

def element_definitions_by_name(names)
  return [] if names.blank?

  if names.to_s == "all"
    Element.definitions
  else
    Element.definitions.select { |e| names.include? e['name'] }
  end
end

#feed_elements ⇒ Object

Returns all elements that should be feeded via rss.

Define feedable elements in your page_layouts.yml:

- name: news
  feed: true
  feed_elements: [element_name, element_2_name]



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# File 'app/models/alchemy/page/page_elements.rb', line 170

def feed_elements
  elements.named(definition['feed_elements'])
end

#richtext_contents_ids ⇒ Object

Returns an array of all EssenceRichtext contents ids from not folded elements



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# File 'app/models/alchemy/page/page_elements.rb', line 176

def richtext_contents_ids
  Alchemy::Content.joins(:element)
    .where(Element.table_name => {page_id: id, folded: false})
    .select(&:has_tinymce?)
    .collect(&:id)
end