Does it support nested data structures?

Absolutely. The skill includes guidance on using cast_embed and cast_assoc for validating and persisting complex, nested data hierarchies.

Why use changesets instead of raw Elixir maps?

Changesets provide a structured, auditable way to track data modifications, manage validation states, and safely cast external user input into protected internal types before database insertion.

Can I create custom validation logic with this skill?

Yes, the skill covers implementing custom validation functions using validate_change/3 and put_change/3 to enforce complex business rules that aren't covered by Ecto's default validators.

How does this skill handle database constraints?

It provides patterns to map database-level errors, such as unique index violations or foreign key constraints, into user-friendly changeset error messages that can be handled gracefully by your application logic.

Ecto Changeset Mastery

Name: Ecto Changeset Mastery
Author: TheBushidoCollective

byTheBushidoCollective

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数据库管理

Validates, casts, and transforms data for reliable database operations in Elixir applications using Ecto.

关于

The ecto-changesets skill empowers developers to manage data integrity within Elixir ecosystems by masterfully handling Ecto changesets. It provides a comprehensive framework for casting external parameters to internal types, applying complex validation rules, and enforcing database constraints. Whether you are building simple CRUD operations or managing complex nested associations, this skill ensures that only valid data reaches your database, reducing runtime errors and improving application security through hardened data-handling patterns.

主要功能

Advanced composition of specialized changesets for different business contexts
Support for nested data structures and associations using embedded schemas
39 GitHub stars
Automated type casting from external parameters to schema-defined types
Extensive library of built-in field validations including format, length, and inclusion
Mapping of database-level unique and foreign key constraints to changeset errors

使用场景

Validating user registration data before persisting to a PostgreSQL or MySQL database
Implementing complex business logic validations that require custom validation functions
Sanitizing and casting incoming API parameters to prevent type-mismatch errors

关于

主要功能

Advanced composition of specialized changesets for different business contexts
Support for nested data structures and associations using embedded schemas
39 GitHub stars
Automated type casting from external parameters to schema-defined types
Extensive library of built-in field validations including format, length, and inclusion
Mapping of database-level unique and foreign key constraints to changeset errors

使用场景

Validating user registration data before persisting to a PostgreSQL or MySQL database
Implementing complex business logic validations that require custom validation functions
Sanitizing and casting incoming API parameters to prevent type-mismatch errors