Ecto Changesets: Difference between revisions
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Changesets can be created using the data from a table schema. | Changesets can be created using the data from a table schema. | ||
==Using Ecto.Changeset.cast == | |||
Ecto.Changeset.cast(%Friends.Person{name: "Bob"}, %{"name" => "Jack"}, [:name, :age]) | Ecto.Changeset.cast(%Friends.Person{name: "Bob"}, %{"name" => "Jack"}, [:name, :age]) | ||
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* The names of the fields that you are allowed to change (as a list of atoms) | * The names of the fields that you are allowed to change (as a list of atoms) | ||
* | * | ||
==Using Ecto.Changeset.change == | |||
Latest revision as of 20:38, 8 October 2023
This page is in progress
Ecto.Repo.insert/2, update/2 and delete/2 require a changeset as their first parameter. The creating, updating or deleting of table data always requires a changeset.
Changesets can be created using the data from a table schema.
Using Ecto.Changeset.cast
Ecto.Changeset.cast(%Friends.Person{name: "Bob"}, %{"name" => "Jack"}, [:name, :age])
The previous code takes three arguments.
- The Schema
- the change you want to make to the data
- The names of the fields that you are allowed to change (as a list of atoms)