activerecord-postgis-adapter | ActiveRecord connection adapter for PostGIS | Object-Relational Mapping library

I have a rails app with a PostGIS database running in docker containners. I'm using apartment for multitenancy and activerecord-postgis-adapter to access the PostGIS geospatial database features from ActiveRecord. I have PostGIS installed in shared_extentions schema as the apartment docs suggest. When I try to configure a datastore in geoserver I get the following error:

I have an intermittent error come up after some deploys of my Rails app.

This code is running in Sidekiq (5 processes each with 10 threads), which is running in a Docker container. I can have tens of thousands of these jobs queued up at any point.

When replicating an app to production, my POSTGIS table columns started misbehaving, with Rails informing me there was an "unknown OID 26865" and that the fields would be treated as String.

Instead of current_pos yielding e. g. # I would get 0101000020E6100000FFDD958664C92A403619DEE6B2434A40. It looked like the activerecord-postgis-adapter was not installed, or installed badly, but I eliminated that possibility by testing for the existence of data type RGeo::Feature::Point and by test-assigning
current_pos = "POINT (13.39318248760133 52.52908798020595)" to the field - which proceeded without error but then yielded another incomprehensible hex string like the above.

Also, strangely enough, POSTGIS was working correctly within the database, e.g. giving correct results for a ST_DISTANCE query. A very limited problem thus, where writing, writing-parsing (from Point to hex format), manipulating by SQL and reading all worked, only the parsing upon read didn't.

When I tried to use migrations to ensure the database column would have the correct type, the migrations failed, giving

An app I'm working on has a regions table containing a geometry column called polygon. The app is using PostGIS via the activerecord-postgis-adapter gem. Active Record migrations involving geometry columns result in a schema that shows:

t.geometry "polygon", limit: {:srid=>0, :type=>"geometry"}

Users can store circles, rectangles, and polygons via a Leaflet.js map in the front end. When a circle is created, the browser request includes the center and radius (in meters).

To create a circle, the app stores the center and radius along with a polygon. To save the polygon, the Region model uses the following method:

I am using activerecord-postgis-adapter in my rails app and I have a column to store a point but I can't work out how to save a value for the point.

In my schema I have

I need to execute the PostGIS function st_intersection within an SQL SELECT clause in Ruby. At the moment I am doing it as raw SQL query:

I'm trying to migrate an existing Ruby on Rails App (Ruby 2.3.3p222, Rails 5.0.0.1), developed by an former colleague, to JRuby. The app is running without any issues using aforementioned Ruby version. You can find the original Gemfile as Gemfile Ruby in the appendix.

As I'm new to Ruby and not sure about what's wrong, I provide all the changes I did so far (see Gemfile JRuby in the appendix for the resulting Gemfile) to migrate the app to JRuby.

1. Replacement of gem 'pg'

I replaced gem 'pg', '~> 0.21.0' by

I'm a newbie on rails and tried using Rgeo and GeoJSON. I want to extract GeoJSON from my data to use in leaflet.

What is the proper way to install GeoJSON (and/or place).

Gemfile :