RGeo::ActiveRecord is an optional RGeo module providing spatial extensions for ActiveRecord, as well as a set of helpers for writing spatial ActiveRecord adapters based on RGeo.
RGeo is a key component for writing location-aware applications in the Ruby programming language. At its core is an implementation of the industry standard OGC Simple Features Specification, which provides data representations of geometric objects such as points, lines, and polygons, along with a set of geometric analysis operations. See the README for the "rgeo" gem for more information.
RGeo::ActiveRecord is an optional RGeo add-on module providing spatial extensions for ActiveRecord, as well as a set of helpers for writing spatial ActiveRecord adapters based on RGeo.
rgeo-activerecord has the following requirements:
- Ruby 1.9.3 or later
- rgeo 0.3.20 or later.
The latest version supports ActiveRecord 4.2 and later.
1.1.0 supports ActiveRecord 4.0 and 4.1
0.6.0 supports earlier versions of ruby and ActiveRecord:
- Ruby 1.8.7 or later
- ActiveRecord 3.0.3 - 3.2.x
- rgeo 0.3.20 or later
- arel 2.0.6 or later
Spatial Factories for Columns
rgeo_factory_generator and related methods were removed in version 4.0, since column types
are no longer tied to their database column in ActiveRecord 4.2.
Register spatial factories in the
SpatialFactoryStore singleton class. Each spatial type
in your ActiveRecord models will use the
SpatialFactoryStore to retrieve
a factory matching the properties of its type. For example, you can set a different
spatial factory for point types, or for types matching a specific SRID, or having
a Z coordinate, or any combination of attributes.
The supported keys when registering a spatial type are listed here with their default values and other allowed values:
geo_type: "geometry", # point, polygon, line_string, geometry_collection, # multi_line_string, multi_point, multi_polygon has_m: false, # true has_z: false, # true sql_type: "geometry", # geography srid: 0, # (any valid SRID)
The default factories are
geographic types, and
RGeo::Cartesian.preferred_factory for geometric types.
Here is an example setup:
::::.instance.tap do |config| # By default, use the GEOS implementation for spatial columns. config.default = ::Geos.factory_generator # But use a geographic implementation for point columns. config.register(::Geographic.spherical_factory(srid: 4326), geo_type: "point") end
See the README for the rgeo gem, a dependency, for further installation information.
Development and support
This README is the official documentation.
RDoc documentation is available at http://rdoc.info/gems/rgeo-activerecord
Source code is hosted on Github at http://github.com/rgeo/rgeo-activerecord
Contributions are welcome. Fork the project on Github.
Report bugs on Github issues at http://github.com/rgeo/rgeo-activerecord/issues
Support available on the rgeo-users google group at http://groups.google.com/group/rgeo-users
Development is supported by:
Copyright 2015 Daniel Azuma, Tee Parham