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如何只更新地图中的一个键,我想通过jsonb_set
这样执行:stackoverflow example或者在事务中避免数据库中潜在的冲突,Ecto可以吗?如何用`jsonb_set`在嵌入式模型模型中执行原子更新?
defmodule MySuperApp.Profile do
use MySuperApp.Model
schema "profiles" do
field :name, :string
embeds_one :settigns, MySuperApp.Settigns
end
def changeset(struct, params) do
struct
|> change
|> put_embed(:settigns, MySuerApp.Settigns.changeset(model, params))
end
end
defmodule MySuperApp.Settigns do
use MySuperApp.Model
@settigns %{socket: true, page: true, android: false, ios: false}
embedded_schema do
field :follow, :boolean
field :action, :map, default: @settigns
end
def changeset(struct, _params) do
# I would like to update only web key and leave old keys
model |> change(action: %{web: false}) # this will override old map -> changes: %{action: %{web: false}
end
end