Module: NoBrainer::Document::Store::ClassMethods

Defined in:
lib/no_brainer/document/store.rb

Instance Method Summary collapse

Instance Method Details

#_store_accessors_module ⇒ Object

:nodoc:



216
217
218
219
220
221
222
 
# File 'lib/no_brainer/document/store.rb', line 216

def _store_accessors_module # :nodoc:
  @_store_accessors_module ||= begin
    mod = Module.new
    include mod
    mod
  end
end

#store(store_attribute, options = {}) ⇒ Object 



111
112
113
 
# File 'lib/no_brainer/document/store.rb', line 111

def store(store_attribute, options = {})
  store_accessor(store_attribute, options[:accessors], **options.slice(:prefix, :suffix)) if options.has_key? :accessors
end

#store_accessor(store_attribute, *keys, prefix: nil, suffix: nil) ⇒ Object 



115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
 
# File 'lib/no_brainer/document/store.rb', line 115

def store_accessor(store_attribute, *keys, prefix: nil, suffix: nil)
  keys = keys.flatten

  accessor_prefix =
    case prefix
    when String, Symbol
      "#{prefix}_"
    when TrueClass
      "#{store_attribute}_"
    else
      ""
    end
  accessor_suffix =
    case suffix
    when String, Symbol
      "_#{suffix}"
    when TrueClass
      "_#{store_attribute}"
    else
      ""
    end

  field store_attribute, type: Hash, default: {} unless has_field?(store_attribute)

  define_method("#{store_attribute}=") do |value|
    super(value) if value.is_a?(Hash) || value.nil?
  end

  _store_accessors_module.module_eval do
    keys.each do |key|
      accessor_key = "#{accessor_prefix}#{key}#{accessor_suffix}"

      define_method("#{accessor_key}=") do |value|
        write_store_attribute(store_attribute, key, value)
      end

      define_method(accessor_key) do
        read_store_attribute(store_attribute, key)
      end

      define_method("#{accessor_key}_changed?") do
        return false unless __send__("#{store_attribute}_changed?")
        prev_store, new_store = changes[store_attribute]
        if NoBrainer.rails4?
          (prev_store && prev_store[key.to_s]) != (new_store && new_store[key.to_s])
        else
          (prev_store && prev_store.dig(key)) != (new_store && new_store.dig(key))
        end
      end

      define_method("#{accessor_key}_change") do
        return unless __send__("#{store_attribute}_changed?")
        prev_store, new_store = changes[store_attribute]
        if NoBrainer.rails4?
          [(prev_store && prev_store[key.to_s]), (new_store && new_store[key.to_s])]
        else
          [(prev_store && prev_store.dig(key)), (new_store && new_store.dig(key))]
        end
      end

      define_method("#{accessor_key}_was") do
        return unless __send__("#{store_attribute}_changed?")
        prev_store, _new_store = changes[store_attribute]
        if NoBrainer.rails4?
          (prev_store && prev_store[key.to_s])
        else
          (prev_store && prev_store.dig(key))
        end
      end

      # NoBrainer doesn't have `attribute_will_change!` so those methods
      # can't be implemented yet.
      # See https://github.com/NoBrainerORM/nobrainer/pull/190
      #
      # define_method("saved_change_to_#{accessor_key}?") do
      #   return false unless __send__("saved_change_to_#{store_attribute}?")
      #   prev_store, new_store = __send__("saved_change_to_#{store_attribute}")
      #   prev_store&.dig(key) != new_store&.dig(key)
      # end

      # define_method("saved_change_to_#{accessor_key}") do
      #   return unless __send__("saved_change_to_#{store_attribute}?")
      #   prev_store, new_store = __send__("saved_change_to_#{store_attribute}")
      #   [prev_store&.dig(key), new_store&.dig(key)]
      # end

      # define_method("#{accessor_key}_before_last_save") do
      #   return unless __send__("saved_change_to_#{store_attribute}?")
      #   prev_store, _new_store = __send__("saved_change_to_#{store_attribute}")
      #   prev_store&.dig(key)
      # end
    end
  end

  # assign new store attribute and create new hash to ensure that each class in the hierarchy
  # has its own hash of stored attributes.
  self.local_stored_attributes ||= {}
  self.local_stored_attributes[store_attribute] ||= []
  self.local_stored_attributes[store_attribute] |= keys
end

#stored_attributes ⇒ Object 



224
225
226
227
228
229
230
 
# File 'lib/no_brainer/document/store.rb', line 224

def stored_attributes
  parent = superclass.respond_to?(:stored_attributes) ? superclass.stored_attributes : {}
  if local_stored_attributes
    parent.merge!(local_stored_attributes) { |k, a, b| a | b }
  end
  parent
end