class GraphQL::Relay::RangeAdd
This provides some isolation from `GraphQL::Relay` internals.
Given a list of items and a new item, it will provide a connection and an edge.
The connection doesn't receive outside arguments, so the list of items should be ordered and paginated before providing it here.
@example Adding a comment to list of comments
post = Post.find(args[:postId]) comments = post.comments new_comment = comments.build(body: args[:body]) new_comment.save! range_add = GraphQL::Relay::RangeAdd.new( parent: post, collection: comments, item: new_comment, context: ctx, ) response = { post: post, commentsConnection: range_add.connection, newCommentEdge: range_add.edge, }
Attributes
Public Class Methods
@param collection [Object] The list of items to wrap in a connection @param item [Object] The newly-added item (will be wrapped in `edge_class`) @param parent [Object] The owner of `collection`, will be passed to the connection if provided @param context [GraphQL::Query::Context] The surrounding `ctx`, will be passed to the connection if provided (this is required for cursor encoders) @param edge_class [Class] The class to wrap `item` with
# File lib/graphql/relay/range_add.rb, line 37 def initialize(collection:, item:, parent: nil, context: nil, edge_class: Relay::Edge) connection_class = BaseConnection.connection_for_nodes(collection) @parent = parent @connection = connection_class.new(collection, {}, parent: parent, context: context) @edge = edge_class.new(item, @connection) end