Module: Tanuki::ModelBehavior

Included in:
Tanuki_Model
Defined in:
lib/tanuki/behavior/model_behavior.rb

Overview

Tanuki::ModelBehavior contains basic methods for a framework model. In is included in the base model class.

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(mod) ⇒ Object

Extends the including module with Tanuki::ModelBehavior::ClassMethods.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 113

def included(mod)
  mod.extend ClassMethods
end

Instance Method Details

#[](attribute) ⇒ Object

Returns the value of a given attribute, loading the model on demand.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 15

def [](attribute)
  ensure_loaded! unless self.class[attribute].present_in(@_data)
  self.class[attribute].get(@_data)
end

#[]=(attribute, value) ⇒ Object

Sets the value of a given attribute.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 21

def []=(attribute, value)
  @_errors ||= {}
  @_original ||= {}
  begin
    @_original[attribute] = self[attribute] unless @_original.include? attribute
    self.class[attribute].set(@_data, value)
    @_errors.delete(attribute)
  rescue
    @_errors[attribute] = {:value => value, :error => $!}
  end
end

#errors ⇒ Object

Returns the modification errors hash.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 34

def errors
  @_errors ||= {}
  @_errors
end

#get_updates ⇒ Object

Returns model updates hash. This method is used internally to generate a data source update.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 52

def get_updates
  # TODO Rewrite this properly
  @_original ||= {}
  original_data = {}
  self.class.attributes.each_pair do |name, attrib|
    attrib.set(original_data, @_original[name])
  end
  updates = {}
  original_data.each_pair do |field, value|
    updates[field] = data[field] if data[field] != original_data[field]
  end
  updates
end

#has_errors? ⇒ Boolean

Returns true if there are any modification errors.

Returns:

  • (Boolean) 


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# File 'lib/tanuki/behavior/model_behavior.rb', line 67

def has_errors?
  @_errors ||= {}
  @_errors == {}
end

#initialize(data = {}, lazy = false) ⇒ Object

Creates new model with dataset row data. If the model is lazy, data should contain only row keys.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 9

def initialize(data={}, lazy=false)
  @_data = data
  @_loaded = !lazy
end

#internals_get(attribute) ⇒ Object

Returns transport representation of data.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 40

def internals_get(attribute)
  self.class[attribute].internals_get(@_data)
end

#internals_set(attribute, internal_value) ⇒ Object

Sets transport representation of data.



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# File 'lib/tanuki/behavior/model_behavior.rb', line 45

def internals_set(attribute, internal_value)
  @_errors ||= {}
  internals_set(self.class[attribute], @_data)
end