ecto/repo/preloader.ex

9   Transforms a result set based on query preloads, loading
16   def query(rows, repo, preloads, take, fun, opts) do
19     |> normalize_and_preload_each(repo, preloads, take, opts)
40   def preload(structs, repo, preloads, opts) when is_list(structs) do
41     normalize_and_preload_each(structs, repo, preloads, opts[:take], opts)
44   def preload(struct, repo, preloads, opts) when is_map(struct) do
45     normalize_and_preload_each([struct], repo, preloads, opts[:take], opts) |> hd()
48   defp normalize_and_preload_each(structs, repo, preloads, take, opts) do
49     preloads = normalize(preloads, take, preloads)
50     preload_each(structs, repo, preloads, opts)
61   defp preload_each(structs, repo, preloads, opts) do
65       {assocs, throughs} = expand(module, preloads, {%{}, %{}})
115                      related_key, query, preloads, take, opts) do
121     all = preload_each(Enum.reverse(loaded_structs, fetch_structs), repo, preloads, opts)
347   def expand(schema, preloads, acc) do
348     Enum.reduce(preloads, acc, fn {preload, {fields, query, sub_preloads}}, {assocs, throughs} ->