Class: ProjectAdapter::Adapter

Inherits:
Object
  • Object
show all
Defined in:
app/concerns/project_adapter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model, adapter_module) ⇒ Adapter

Returns a new instance of Adapter.



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# File 'app/concerns/project_adapter.rb', line 25

def initialize(model, adapter_module)
  @model          = model
  @namespace      = adapter_module
  @name           = adapter_module.name
  @attribute_name = name.demodulize.underscore
end

Instance Attribute Details

#attribute_name ⇒ Object (readonly)

Returns the value of attribute attribute_name.



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# File 'app/concerns/project_adapter.rb', line 32

def attribute_name
  @attribute_name
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'app/concerns/project_adapter.rb', line 32

def model
  @model
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'app/concerns/project_adapter.rb', line 32

def name
  @name
end

#namespace ⇒ Object (readonly)

Returns the value of attribute namespace.



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# File 'app/concerns/project_adapter.rb', line 32

def namespace
  @namespace
end

Instance Method Details

#adapter_method ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 46

def adapter_method
  :"#{attribute_name}_adapter"
end

#adapter_name_method ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 58

def adapter_name_method
  :"#{attribute_name}_name"
end

#before_update_method ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 42

def before_update_method
  :"#{attribute_name}_before_update"
end

#concern_name ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 54

def concern_name
  :"#{name.demodulize}Concern"
end

#define_methods! ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 66

def define_methods!
  concern = ProjectAdapter.const_set(concern_name, Module.new)
  concern.extend ActiveSupport::Concern

  class_methods = concern.const_set(:ClassMethods, Module.new)
  class_methods.module_eval <<-RUBY, __FILE__ , __LINE__ + 1
    def with_#{attribute_name}(value=nil)
      if value
        where [ "COALESCE(projects.props->>'#{prop_name}', 'None') = ?", value ]
      else
        where "COALESCE(projects.props->>'#{prop_name}', 'None') != 'None'"
      end
    end
  RUBY

  concern.module_eval <<-RUBY, __FILE__ , __LINE__ + 1
    included do
      validate :#{validation_method}
      before_update :#{before_update_method}
    end

    def #{adapter_name_method}
      props["#{prop_name}"] || "None"
    end

    def has_#{attribute_name}?
      #{adapter_name_method} != "None"
    end

    def #{validation_method}
      #{adapter_method}.errors_with_parameters(self, *#{params_method}.values).each do |attribute, messages|
        errors.add(attribute, messages) if messages.any?
      end
    end

    def #{before_update_method}
      return true unless #{attribute_name}.respond_to?(:before_update)
      #{attribute_name}.before_update(self)
    end

    def #{attribute_name}
      @#{attribute_name} ||= #{adapter_method}
          .build(self, *#{params_method}.values)
          .extend(FeatureSupport)
    end

    def #{params_method}
      #{adapter_method}.parameters.each_with_object({}) do |parameter, hash|
        hash[parameter] = props[parameter.to_s]
      end
    end

    def #{adapter_method}
      #{namespace}.adapter(#{adapter_name_method})
    end
  RUBY

  model.send :include, concern
end

#params_method ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 50

def params_method
  :"parameters_for_#{attribute_name}_adapter"
end

#prop_name ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 62

def prop_name
  "adapter.#{attribute_name.to_s.camelize(:lower)}"
end

#title ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 34

def title
  name.demodulize.titleize
end

#validation_method ⇒ Object 



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# File 'app/concerns/project_adapter.rb', line 38

def validation_method
  :"#{attribute_name}_configuration_is_valid"
end