Class: OmniService::Collection

Inherits:
Object
  • Object
show all
Extended by:
Dry::Initializer
Includes:
Strict
Defined in:
lib/omni_service/collection.rb

Overview

Iterates component over arrays in namespaced params and context. Collects results from all iterations; errors include array index in path.

Extracts arrays from params and context. Iteration count is max of array lengths. Missing indices get empty values. Error paths are prefixed with [namespace, index, …].

Examples:

Create multiple comments for a post

# params: { comments: [{ body: 'First' }, { body: '' }] }
# context: { comments: [{ author: user1 }, { author: user2 }] }
collection(create_comment, namespace: :comments)
# => Result(
#      context: { comments: [{ comment: <Comment> }, { comment: nil }] },
#      errors: [{ path: [:comments, 1, :body], code: :blank }]
#    )

Validate nested items

collection(validate_line_item, namespace: :line_items)
# Errors: [:line_items, 0, :quantity], [:line_items, 2, :price]

Instance Method Summary collapse

Methods included from Strict

#call!

Instance Method Details

#call(*params, **context) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/omni_service/collection.rb', line 32

def call(*params, **context)
  params_array = params.map { |param| param.symbolize_keys.fetch(namespace, []) }
  context_array = context.fetch(namespace, [])
  size = [*params_array.map(&:size), context_array.size].max

  results = (0...size).map do |index|
    call_wrapper(params_array, context_array, context, index)
  end

  compose_result(results, context)
end

#signature ⇒ Object 



44
45
46
 
# File 'lib/omni_service/collection.rb', line 44

def signature
  @signature ||= [component_wrapper.signature.first, true]
end