Class: RailsBestPractices::Core::ModelAssociations

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_best_practices/core/model_associations.rb

Overview

Model associations container.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ModelAssociations

Returns a new instance of ModelAssociations.



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# File 'lib/rails_best_practices/core/model_associations.rb', line 7

def initialize
  @associations = {}
end

Instance Method Details

#add_association(model_name, association_name, association_meta, association_class = nil) ⇒ Object

Parameters:

  • model (String) —

    name

  • association (String) —

    name

  • association (String) —

    meta, has_many, has_one, belongs_to and has_and_belongs_to_many

  • association (String) —

    class name



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# File 'lib/rails_best_practices/core/model_associations.rb', line 16

def add_association(model_name, association_name, association_meta, association_class = nil)
  @associations[model_name] ||= {}
  @associations[model_name][association_name] = {
    'meta' => association_meta, 'class_name' => association_class || association_name.classify
  }
end

#each ⇒ Object

delegate each to @associations.



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# File 'lib/rails_best_practices/core/model_associations.rb', line 44

def each
  @associations.each { |model, model_associations| yield model, model_associations }
end

#get_association(model_name, association_name) ⇒ Hash

Get a model association.

Parameters:

  • model (String) —

    name

  • association (String) —

    name

Returns:

  • (Hash) —

    => association_meta, “class_name” => association_class



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# File 'lib/rails_best_practices/core/model_associations.rb', line 28

def get_association(model_name, association_name)
  associations = @associations[model_name]
  associations && associations[association_name]
end

#get_association_class_name(table_name, association_name) ⇒ String

Get association’s class name

Parameters:

  • table (String) —

    name

  • association_name (String)

Returns:

  • (String) —

    association’s class name



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# File 'lib/rails_best_practices/core/model_associations.rb', line 53

def get_association_class_name(table_name, association_name)
  (
    associations =
      @associations.select { |model, _model_associations| model.gsub('::', '').tableize == table_name }.values
        .first
  ) && (association_meta = associations.select { |name, _meta| name == association_name }.values.first) &&
    association_meta['class_name']
end

#is_association?(model_name, association_name) ⇒ Boolean

If it is a model’s association.

Parameters:

  • model (String) —

    name

  • association (String) —

    name

Returns:

  • (Boolean) —

    true if it is the model’s association



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# File 'lib/rails_best_practices/core/model_associations.rb', line 38

def is_association?(model_name, association_name)
  associations = @associations[model_name]
  !!(associations && associations[association_name])
end