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I am wondering why when I ran Ecto.Changeset.apply_changes(changeset) the prepared changes function on that changeset did not run. I have...
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I am currently using the following snippet to do it
old_value =
cs
|> Map.get(:data, %{})
|> Map.get(field, ...
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How exactly i can add an error into nested/embedded changeset? Don’t think add_error can do this.
Context: regular changeset validation ...
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Hi all
Context: external system with inconsistent, but feature-full API
We use an external SaaS system for hiring people. There are can...
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I want to check if my changeset has changes in a true/false way. changset.changes returns %{} when empty, which is truthy, but I need tha...
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Hey folks,
I wondered whether it is possible to update a struct without explicitly defining the attributes that were updated. So, someth...
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I have question on the limitations of embeds_many. I want non-homogenous embeds many.
Despite being able to define how to handle casting...
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I have a “smart” put function that takes care of saving (creating or updating) a resource and all its sub resources automatically. It wor...
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Trending Over Three Years
I’m using changesets to validate various API submissions and I’m wondering if someone has come up with an easy way to format the errors? ...
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I'm having trouble understanding the difference between cast_assoc, assoc_constraint and foreign_key_constraint in a changeset. More spec...
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In Ecto.Changeset — Ecto v3.11.1 there is a part which says:
The :delete option in particular must be used carefully as it would allow ...
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How can i add changeset errors from Controller when i am trying to add error like follow
Ecto.Changeset.add_error(changeset, :old_pass...
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When I'm creating Post insert changeset from iex:
new_post = %MyProject.Post{}
changeset = Ecto.Changeset.cast(new_post, %{body: "Bod...
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My question is around Ecto.Changeset and the need to validate entire models, not just the passed in params. Basically, I’ve found a use...
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Hi there,
I’m trying to capture constraint exceptions when a user attempts to create a database record with a primary key that already ...
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Hello,
I am trying to cast data for which I specify types dynamically at runtime. In my particular case I’d like to validate that a sing...
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I have an embedded schema, and I noticed that it was always writing to the DB, even when it wasn’t updated from its default value [].
Ch...
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I am trying to update a changeset from an invalid set of changes to a valid set, but the errors do not reflect the change. The following ...
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I’m working on a table to store shipping addresses. I would like to add a fingerprint of each address so that I can more easily tell whe...
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Question / comment / maybe bug report
I was surprised that this didn’t work:
def validate_not_cleared(changeset) do
validate_change(c...
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With these modules:
defmodule Foo do
use Ecto.Schema
import Ecto.Changeset
schema "foo" do
field(:name, :string, null: false)...
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From Programming Ecto’s book:
def new(conn, _params) do
changeset = User.changeset(%User{}, %{})
render(conn, changeset: changeset)
...
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In my CRUD app I would like to add a duplicate feature, in which an existing object’s data is used to prepopulate the form. The naive way...
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