Class: ViewModel::ActiveRecord::AbstractCollectionUpdate::Functional

Inherits:
Object
  • Object
show all
Defined in:
lib/view_model/active_record/update_data.rb

Overview

Wraps an ordered list of FunctionalUpdates, each of whose contents are either UpdateData for nested associations or references for referenced associations.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(actions) ⇒ Functional

Returns a new instance of Functional.



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# File 'lib/view_model/active_record/update_data.rb', line 73

def initialize(actions)
  @actions = actions
end

Instance Attribute Details

#actions ⇒ Object (readonly)

Returns the value of attribute actions.



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# File 'lib/view_model/active_record/update_data.rb', line 71

def actions
  @actions
end

Instance Method Details

#check_for_duplicates!(update_context, blame) ⇒ Object 



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# File 'lib/view_model/active_record/update_data.rb', line 101

def check_for_duplicates!(update_context, blame)
  duplicate_vm_refs = vm_references(update_context).duplicates
  if duplicate_vm_refs.present?
    formatted_invalid_ids = duplicate_vm_refs.keys.map(&:to_s).join(', ')
    raise ViewModel::DeserializationError::InvalidStructure.new("Duplicate functional update targets: [#{formatted_invalid_ids}]", blame)
  end
end

#contents ⇒ Object 



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# File 'lib/view_model/active_record/update_data.rb', line 77

def contents
  actions.lazy
    .reject { |action| action.is_a?(FunctionalUpdate::Remove) }
    .flat_map(&:contents)
    .to_a
end

#removed_vm_refs ⇒ Object 



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# File 'lib/view_model/active_record/update_data.rb', line 94

def removed_vm_refs
  actions.lazy
    .select { |action| action.is_a?(FunctionalUpdate::Remove) }
    .flat_map(&:removed_vm_refs)
    .to_a
end

#used_vm_refs(_update_context) ⇒ Object

Resolve ViewModel::References used in the update’s contents, whether by reference or value.

Raises:

  • (RuntimeError) 


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# File 'lib/view_model/active_record/update_data.rb', line 90

def used_vm_refs(_update_context)
  raise RuntimeError.new('abstract method')
end

#vm_references(update_context) ⇒ Object 



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# File 'lib/view_model/active_record/update_data.rb', line 84

def vm_references(update_context)
  used_vm_refs(update_context) + removed_vm_refs
end