Eiji
[SOLVED] When Ecto.Changeset action is set?
When I’m creating Post insert changeset from iex:
new_post = %MyProject.Post{}
changeset = Ecto.Changeset.cast(new_post, %{body: "Body", title: "Title"}, [:title, :body])
#Ecto.Changeset<action: nil, changes: %{body: "Body", title: "Title"},
errors: [], data: #First.Post<>, valid?: true>
When I’m creating Post update changeset from iex:
post = MyProject.Repo.get(MyProject.Post, 5)
changeset = Ecto.Changeset.cast(post, %{body: "Body", title: "Title"}, [:title, :body])
#Ecto.Changeset<action: nil, changes: %{body: "Body", title: "Title"},
errors: [], data: #First.Post<>, valid?: true>
It always returns action: nil. When Ecto.Changeset action is set?
Marked As Solved
michalmuskala
When you pass the changeset to one of the Repo functions.
Also Liked
michalmuskala
I’m not sure that’s the right approach - why not create multiple changeset functions?
def create_changeset(schema, params) do
schema
|> common_changeset(params)
|> create_specific_operations
end
def update_changeset(schema, params) do
schema
|> common_changeset(params)
|> update_specific_operations
end
def common_changeset(schema, params) do
# ...
end
Eiji
You mean: delete(!), insert(!) and update(!), right?
I want to have it set in changeset model function (before affect database) and perform some actions (in cond do statement).
Is it possible? Or I need set it manually? Or maybe one more parameter in changeset function for cond do statement is better solution?
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