Lapis 1.6.0

Additions

• Add a new general purpose preload function that can preload many relations
  at once for many kinds of model instances, including recursively preloading relations
• Addition of cqueues and lua-http server backend
• Pgmoon connection status is logged to performance table for each request when
  performance measurements are enable
• fetch relations can provide a method for preloading with the preload option
• default_url_params has been added to request support object for extending the default parameters passed into `url_for
• matches_pattern validation can be used to test an input against a Lua pattern
• relation_is_loaded function can be used to test if a model has a relation loaded
• mock_request can insert a session via a Lua table
• lapis.time module with a sleep function that executes correct implementation for the current backend server
• If you use when instead of where when creating an index an error is thrown
• lapis.spec.request, the mock_request function supports cookies option
• Add render_to_file method for widgets
• Add documentation for Flow

Changes

• Route precedence sorting now uses a score based approach where multiple variables or splats can affect the final order
• Mocked requests have ngx.md5 implemented with luacrypto
• Query logs use luasocket to measure time elapsed for a more accurate measurement
• URL parsing uses find and sub instead of match to parse very long paths faster (#498)
• db.NULL values are always stripped when inserting a new row from a model's create method
• Test server can be run even if there isn't a database configured
• Refactor backend implementation to be extensible to allow for cqueues/lua-http implementation
• Add support for test server to run on cqueues backend
• Replace luacrypto with luaossl

Minor changes

• Lua and MoonScript are added as mime types in default mime.types file (#513)
• Various improvements to the documentation

Fixes

• Encoding a query string with a parameter with a boolean value will no longer throw an error
• Fix issue where *.lua would be included in .gitignore for Lua projects (#501)
• A user set content type will no longer be overwritten when outputting with the json action return handler
• Check for Content-Disposition header for file uploads is no longer case sensitive

Note on cqueues/lua-http

With this release we're adding a new server backend for Lapis. Although the
backend is functional, there are some things that aren't available yet.
Database connections are shared across all requests so you have to be careful
about leaving transactions or state open. Additionally, there's no way to spawn
multiple workers. For production environments we still recommend OpenResty.