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[:post_id]) 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: context, ) response = { post: post, comments_connection: range_add.connection, new_comment_edge: range_add.edge, }
Attributes
connection[R]
edge[R]
parent[R]
Public Class Methods
new(collection:, item:, context:, parent: nil, edge_class: nil)
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@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 context [GraphQL::Query::Context] The surrounding `ctx`, will be passed to the connection @param parent [Object] The owner of `collection`, will be passed to the connection if provided @param edge_class [Class] The class to wrap `item` with (defaults to the connection’s edge class)
# File lib/graphql/relay/range_add.rb, line 37 def initialize(collection:, item:, context:, parent: nil, edge_class: nil) conn_class = context.schema.connections.wrapper_for(collection) # The rest will be added by ConnectionExtension @connection = conn_class.new(collection, parent: parent, context: context, edge_class: edge_class) # Check if this connection supports it, to support old versions of GraphQL-Pro @edge = if @connection.respond_to?(:range_add_edge) @connection.range_add_edge(item) else @connection.edge_class.new(item, @connection) end @parent = parent end