Class: GraphQL::Schema::BuildFromDefinition::ResolveMap::DefaultResolve Private
- Inherits:
-
Object
- Object
- GraphQL::Schema::BuildFromDefinition::ResolveMap::DefaultResolve
- Defined in:
- lib/graphql/schema/build_from_definition/resolve_map/default_resolve.rb
This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.
Instance Method Summary collapse
-
#call(obj, args, ctx) ⇒ Object
private
Make some runtime checks about how
obj
implements thefield_name
. -
#initialize(field_map, field_name) ⇒ DefaultResolve
constructor
private
A new instance of DefaultResolve.
Constructor Details
#initialize(field_map, field_name) ⇒ DefaultResolve
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Returns a new instance of DefaultResolve.
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# File 'lib/graphql/schema/build_from_definition/resolve_map/default_resolve.rb', line 7 def initialize(field_map, field_name) @field_map = field_map @field_name = field_name end |
Instance Method Details
#call(obj, args, ctx) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Make some runtime checks about
how obj
implements the field_name
.
Create a new resolve function according to that implementation, then:
- update field_map
with this implementation
- call the implementation now (to satisfy this field execution)
If obj
doesn’t implement field_name
, raise an error.
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# File 'lib/graphql/schema/build_from_definition/resolve_map/default_resolve.rb', line 20 def call(obj, args, ctx) method_name = @field_name if !obj.respond_to?(method_name) raise KeyError, "Can't resolve field #{method_name} on #{obj.inspect}" else method_arity = obj.method(method_name).arity resolver = case method_arity when 0, -1 # -1 Handles method_missing, eg openstruct ->(o, a, c) { o.public_send(method_name) } when 1 ->(o, a, c) { o.public_send(method_name, a) } when 2 ->(o, a, c) { o.public_send(method_name, a, c) } else raise "Unexpected resolve arity: #{method_arity}. Must be 0, 1, 2" end # Call the resolver directly next time @field_map[method_name] = resolver # Call through this time resolver.call(obj, args, ctx) end end |