Class: Rails::GraphQL::Request::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/rails/graphql/request/context.rb

Overview

GraphQL Request Context

This class is used as context for the response while processing fields, objects, or any data that it’s going to be placed on the response

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Context

Returns a new instance of Context.



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# File 'lib/rails/graphql/request/context.rb', line 13

def initialize
  @stack = []
  @current = Helpers::AttributeDelegator.new(self, :current_value, cache: false)
end

Instance Attribute Details

#current ⇒ Object (readonly)

Returns the value of attribute current.



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# File 'lib/rails/graphql/request/context.rb', line 11

def current
  @current
end

Instance Method Details

#ancestors ⇒ Object

Get all ancestors objects



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# File 'lib/rails/graphql/request/context.rb', line 37

def ancestors
  @stack[1..-1]
end

#at(index) ⇒ Object

Get a value at the given index



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# File 'lib/rails/graphql/request/context.rb', line 32

def at(index)
  @stack[index]
end

#current_value ⇒ Object

Get the current value, which basically means the first item on the current stack



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# File 'lib/rails/graphql/request/context.rb', line 48

def current_value
  at(0)
end

#override_value(value) ⇒ Object Also known as: current_value=

Change the current value, either form hits or the actual value



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# File 'lib/rails/graphql/request/context.rb', line 53

def override_value(value)
  @stack[0] = value
end

#parent ⇒ Object

Find the parent object



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# File 'lib/rails/graphql/request/context.rb', line 42

def parent
  at(1)
end

#stack ⇒ Object

Return a duplicated version of the stack, for safety



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# File 'lib/rails/graphql/request/context.rb', line 27

def stack
  @stack.dup
end

#stacked(value) ⇒ Object

Add, exec, and then remove the value from the stack



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# File 'lib/rails/graphql/request/context.rb', line 19

def stacked(value)
  @stack.unshift(value) unless value.eql?(@stack[0])
  yield(@current)
ensure
  @stack.shift
end