Module: GraphQL::Define::InstanceDefinable::ClassMethods

Defined in:
lib/graphql/define/instance_definable.rb

Instance Method Summary collapse

Instance Method Details

#accepts_definitions(*accepts) ⇒ Object

Attach definitions to this class. Each symbol in ‘accepts` will be assigned with `key=`. The last entry in accepts may be a hash of name-proc pairs for custom definitions.



118
119
120
121
122
123
124
125
126
127
128
129
130
 
# File 'lib/graphql/define/instance_definable.rb', line 118

def accepts_definitions(*accepts)
  new_assignments = if accepts.last.is_a?(Hash)
    accepts.pop.dup
  else
    {}
  end

  accepts.each do |key|
    new_assignments[key] = AssignAttribute.new(key)
  end

  @own_dictionary = own_dictionary.merge(new_assignments)
end

#define(**kwargs, &block) ⇒ Object

Prepare the defintion for an instance of this class using its definitions. Note that the block is not called right away – instead, it’s deferred until one of the defined fields is needed.



99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
 
# File 'lib/graphql/define/instance_definable.rb', line 99

def define(**kwargs, &block)
  instance = self.new

  instance.definition_proc = -> (obj) {
    kwargs.each do |keyword, value|
      public_send(keyword, value)
    end

    if block
      instance_eval(&block)
    end
  }

  instance
end

#dictionary ⇒ Hash

Returns combined definitions for self and ancestors.

Returns:

  • (Hash) —

    combined definitions for self and ancestors



150
151
152
153
154
155
156
 
# File 'lib/graphql/define/instance_definable.rb', line 150

def dictionary
  if superclass.respond_to?(:dictionary)
    own_dictionary.merge(superclass.dictionary)
  else
    own_dictionary
  end
end

#lazy_defined_attr_accessor(*attr_names) ⇒ Object

Define a reader and writer for each of ‘attr_names` which ensures that the definition block was called before accessing it.



134
135
136
137
138
139
140
141
142
143
144
145
146
147
 
# File 'lib/graphql/define/instance_definable.rb', line 134

def lazy_defined_attr_accessor(*attr_names)
  attr_names.each do |attr_name|
    ivar_name = :"@#{attr_name}"
    define_method(attr_name) do
      ensure_defined
      instance_variable_get(ivar_name)
    end

    define_method("#{attr_name}=") do |new_value|
      ensure_defined
      instance_variable_set(ivar_name, new_value)
    end
  end
end

#own_dictionary ⇒ Hash

Returns definitions for this class only.

Returns:

  • (Hash) —

    definitions for this class only



159
160
161
 
# File 'lib/graphql/define/instance_definable.rb', line 159

def own_dictionary
  @own_dictionary ||= {}
end