chore: support insert ignore for postgres

Author: bethesque

DEVELOPER_SETUP.md

@@ -53,6 +53,18 @@ docker-compose -f docker-compose-test-mysql.yml up --build --remove-orphans
 # in separate console window...
 docker-compose -f docker-compose-test-mysql.yml run --rm tests bash
 
+# inside the tests container
+bundle exec rake
+```
+
+## Running the tests with postgres
+
+```
+docker-compose -f docker-compose-test-postgres.yml up --build --remove-orphans
+
+# in separate console window...
+docker-compose -f docker-compose-test-postgres.yml run --rm tests bash
+
 # inside the tests container
 bundle exec rake
 ```

Dockerfile

@@ -36,5 +36,10 @@ RUN gem install bundler -v '~>2.0.0' \
 RUN echo '#!/bin/sh' >> /home/start.sh
 RUN echo 'bundle exec rackup -o 0.0.0.0 -p 9292' >> /home/start.sh
 RUN chmod +x /home/start.sh
+
+RUN echo '#!/bin/sh' >> /home/init-db.sh
+RUN echo 'bundle exec rake db:prepare:test' >> /home/init-db.sh
+RUN chmod +x /home/init-db.sh
+
 ENTRYPOINT bash
 CMD []

config/database.yml

@@ -18,6 +18,13 @@ test:
     password: postgres
     host: localhost
     port: "5433"
+  docker_compose_postgres:
+    adapter: postgres
+    database: postgres
+    username: postgres
+    password: postgres
+    host: postgres
+    port: "5432"
   mysql:
     <<: *default
     adapter: mysql2

lib/sequel/plugins/insert_ignore.rb

@@ -25,13 +25,19 @@ module ClassMethods
       module InstanceMethods
         def insert_ignore(opts = {})
           save(opts)
+          load_values_from_previously_inserted_object unless id
+          self
         rescue Sequel::NoExistingObject
           # MySQL. Ruining it for everyone.
+          load_values_from_previously_inserted_object
+        end
+
+        def load_values_from_previously_inserted_object
           query = self.class.insert_ignore_identifying_columns.each_with_object({}) do | column_name, q |
             q[column_name] = values[column_name]
           end
           self.id = model.where(query).single_record.id
-          self.refresh
+          refresh
         end
 
         # Does the job for Sqlite and Postgres