rails/jbuilder

Health v2 · maintenance only

Adoption not part of the score

4420 stars · 454 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Jbuilder is a Ruby gem providing a simple Builder-style DSL for declaring JSON structures, commonly used in Rails views via ..jbuilder templates. It handles conditionals, loops, partials, and dynamic attribute names more cleanly than manipulating raw hashes.

Use cases

• render JSON API responses in Rails views
• generate JSON with conditionals and loops
• build nested JSON structures from ActiveRecord models
• create top-level JSON arrays for index actions
• merge existing hashes into JSON output
• define JSON keys dynamically at runtime

When to choose

• you're building a Rails app that serves JSON endpoints
• you want view-layer JSON templates instead of serializers
• your JSON generation involves complex conditionals and collections

When to avoid

• you're not using Ruby or Rails
• you prefer serializer-style objects like ActiveModel::Serializers or fast_api
• you need high-performance JSON generation with minimal overhead

Facets

library · maturity stable

serialization templating api-framework web-development backend apis ruby -generation builder-dsl rails view-templates web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="rails/jbuilder")