Class: Gitlab::Graphql::Pagination::Keyset::Connection
- Inherits:
-
GraphQL::Pagination::ActiveRecordRelationConnection
- Object
- GraphQL::Pagination::ActiveRecordRelationConnection
- Gitlab::Graphql::Pagination::Keyset::Connection
- Includes:
- ConnectionCollectionMethods, ConnectionRedaction, GenericKeysetPagination, Utils::StrongMemoize
- Defined in:
- lib/gitlab/graphql/pagination/keyset/connection.rb
Instance Method Summary collapse
-
#cursor_for(node) ⇒ Object
rubocop: enable Naming/PredicateName.
- #has_next_page ⇒ Object
-
#has_previous_page ⇒ Object
rubocop: disable Naming/PredicateName relay.dev/graphql/connections.htm#sec-undefined.PageInfo.Fields.
- #nodes ⇒ Object
- #sliced_nodes ⇒ Object
Methods included from Utils::StrongMemoize
#clear_memoization, #strong_memoize, #strong_memoized?
Methods included from GenericKeysetPagination
#items, #old_keyset_pagination_usage
Instance Method Details
#cursor_for(node) ⇒ Object
rubocop: enable Naming/PredicateName
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# File 'lib/gitlab/graphql/pagination/keyset/connection.rb', line 82 def cursor_for(node) encoded_json_from_ordering(node) end |
#has_next_page ⇒ Object
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# File 'lib/gitlab/graphql/pagination/keyset/connection.rb', line 58 def has_next_page strong_memoize(:has_next_page) do if before # If `before` is specified, that points to a specific record, # even if it's the last one. Since we're asking for `before`, # then the specific record we're pointing to is in the # next page true elsif first case sliced_nodes when Array sliced_nodes.size > limit_value else # If we count the number of requested items plus one (`limit_value + 1`), # then if we get `limit_value + 1` then we know there is a next page relation_count(set_limit(sliced_nodes, limit_value + 1)) == limit_value + 1 end else false end end end |
#has_previous_page ⇒ Object
rubocop: disable Naming/PredicateName relay.dev/graphql/connections.htm#sec-undefined.PageInfo.Fields
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# File 'lib/gitlab/graphql/pagination/keyset/connection.rb', line 36 def has_previous_page strong_memoize(:has_previous_page) do if after # If `after` is specified, that points to a specific record, # even if it's the first one. Since we're asking for `after`, # then the specific record we're pointing to is in the # previous page true elsif last limited_nodes !!@has_previous_page else # Key thing to remember. When `before` is specified (and no `last`), # the spec says return _all_ edges minus anything after the `before`. # Which means the returned list starts at the very first record. # Then the max_page kicks in, and returns the first max_page items. # Because of this, `has_previous_page` will be false false end end end |
#nodes ⇒ Object
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# File 'lib/gitlab/graphql/pagination/keyset/connection.rb', line 99 def nodes # These are the nodes that will be loaded into memory for rendering # So we're ok loading them into memory here as that's bound to happen # anyway. Having them ready means we can modify the result while # rendering the fields. @nodes ||= limited_nodes.to_a end |
#sliced_nodes ⇒ Object
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# File 'lib/gitlab/graphql/pagination/keyset/connection.rb', line 86 def sliced_nodes @sliced_nodes ||= begin OrderInfo.validate_ordering(ordered_items, order_list) unless loaded?(ordered_items) sliced = ordered_items sliced = slice_nodes(sliced, before, :before) if before.present? sliced = slice_nodes(sliced, after, :after) if after.present? sliced end end |