add option to select db adapter in ror (OpenAPITools#711)

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java

@@ -257,4 +257,8 @@ public static enum ENUM_PROPERTY_NAMING_TYPE {camelCase, PascalCase, snake_case,
 
     public static final String DOCEXTENSION = "docExtension";
     public static final String DOCEXTENSION_DESC = "The extension of the generated documentation files, defaults to markdown, .md";
+
+    public static final String DATABASE_ADAPTER = "databaseAdapter";
+    public static final String DATABASE_ADAPTER_DESC = "The adapter for database (e.g. mysql, sqlite). Default: sqlite";
+
 }

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java

@@ -95,7 +95,7 @@ public Generator opts(ClientOptInput opts) {
 
     /**
      * Programmatically disable the output of .openapi-generator/VERSION, .openapi-generator-ignore,
-     * or other metadata files used by Swagger Codegen.
+     * or other metadata files used by OpenAPI Generator.
      *
      * @param generateMetadata true: enable outputs, false: disable outputs
      */

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyOnRailsServerCodegen.java

@@ -19,7 +19,10 @@
 
 import java.text.SimpleDateFormat;
 
+
+import org.openapitools.codegen.CliOption;
 import org.openapitools.codegen.CodegenType;
+import org.openapitools.codegen.CodegenConstants;
 import org.openapitools.codegen.SupportingFile;
 
 import io.swagger.v3.oas.models.media.*;
@@ -64,6 +67,8 @@ public class RubyOnRailsServerCodegen extends AbstractRubyCodegen {
     protected String pidFolder = tmpFolder + File.separator + "pids";
     protected String socketsFolder = tmpFolder + File.separator + "sockets";
     protected String vendorFolder = "vendor";
+    protected String databaseAdapter = "sqlite";
+
 
     public RubyOnRailsServerCodegen() {
         super();
@@ -87,6 +92,9 @@ public RubyOnRailsServerCodegen() {
 
         // remove modelPackage and apiPackage added by default
         cliOptions.clear();
+
+        cliOptions.add(new CliOption(CodegenConstants.DATABASE_ADAPTER, CodegenConstants.DATABASE_ADAPTER_DESC).
+                defaultValue("sqlite"));
     }
 
     @Override
@@ -97,6 +105,23 @@ public void processOpts() {
         //setModelPackage("models");
         setApiPackage("app/controllers");
 
+        // determine which db adapter to use
+        if (additionalProperties.containsKey(CodegenConstants.DATABASE_ADAPTER)) {
+            setDatabaseAdapter((String) additionalProperties.get(CodegenConstants.DATABASE_ADAPTER));
+        } else {
+            // not set, pass the default value to template
+            additionalProperties.put(CodegenConstants.DATABASE_ADAPTER, databaseAdapter);
+        }
+
+        if ("sqlite".equals(databaseAdapter)) {
+            additionalProperties.put("isDBSQLite", Boolean.TRUE);
+        } else if ("mysql".equals(databaseAdapter)) {
+            additionalProperties.put("isDBMySQL", Boolean.TRUE);
+        } else {
+            LOGGER.warn("Unknown database {}. Defaul to 'sqlite'.", databaseAdapter);
+            additionalProperties.put("isDBSQLite", Boolean.TRUE);
+        }
+
         supportingFiles.add(new SupportingFile("Gemfile", "", "Gemfile"));
         supportingFiles.add(new SupportingFile("README.md", "", "README.md"));
         supportingFiles.add(new SupportingFile("Rakefile", "", "Rakefile"));
@@ -230,7 +255,7 @@ public String toApiName(String name) {
         if (name.length() == 0) {
             return "ApiController";
         }
-        // e.g. phone_number_api => PhoneNumberApi
+        // e.g. phone_number_controller => PhoneNumberController
         return camelize(name) + "Controller";
     }
 
@@ -239,4 +264,8 @@ public Map<String, Object> postProcessSupportingFileData(Map<String, Object> obj
         generateYAMLSpecFile(objs);
         return super.postProcessSupportingFileData(objs);
     }
+
+    public void setDatabaseAdapter(String databaseAdapter) {
+        this.databaseAdapter = databaseAdapter;
+    }
 }

modules/openapi-generator/src/main/resources/ruby-on-rails-server/Gemfile

@@ -3,8 +3,14 @@ source 'https://rubygems.org'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.0.0'
+{{#isDBSQLite}}
+# Use sqlite as the database for Active Record
+gem 'sqlite3', '~> 1.3'
+{{/isDBSQLite}}
+{{#isDBMySQL}}
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.3.18', '< 0.5'
+{{/isDBMySQL}}
 # Use Puma as the app server
 gem 'puma', '~> 3.0'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
@@ -33,4 +39,4 @@ group :development do
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

modules/openapi-generator/src/main/resources/ruby-on-rails-server/database.yml

@@ -1,3 +1,4 @@
+{{#isDBMySQL}}
 # MySQL. Versions 5.0 and up are supported.
 #
 # Install the MySQL driver
@@ -52,3 +53,28 @@ production:
   database: api_demo_production
   username: api_demo
   password: <%= ENV['API_DEMO_DATABASE_PASSWORD'] %>
+{{/isDBMySQL}}
+{{#isDBSQLite}}
+# SQLite version 3.x
+#   gem install sqlite3-ruby (not necessary on OS X Leopard)
+development:
+  adapter: sqlite3
+  database: db/development.sqlite3
+  pool: 5
+  timeout: 5000
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  adapter: sqlite3
+  database: db/test.sqlite3
+  pool: 5
+  timeout: 5000
+
+production:
+  adapter: sqlite3
+  database: db/production.sqlite3
+  pool: 5
+  timeout: 5000
+{{/isDBSQLite}}

samples/server/petstore/ruby-on-rails/.openapi-generator/VERSION

@@ -1 +1 @@
-3.1.1-SNAPSHOT
+3.2.0-SNAPSHOT

samples/server/petstore/ruby-on-rails/Gemfile

@@ -3,8 +3,14 @@ source 'https://rubygems.org'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.0.0'
+{{#isDBSQLite}}
+# Use sqlite as the database for Active Record
+gem 'sqlite3', '~> 1.3'
+{{/isDBSQLite}}
+{{#isDBMySQL}}
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.3.18', '< 0.5'
+{{/isDBMySQL}}
 # Use Puma as the app server
 gem 'puma', '~> 3.0'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
@@ -33,4 +39,4 @@ group :development do
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

samples/server/petstore/ruby-on-rails/config/database.yml

@@ -1,3 +1,4 @@
+{{#isDBMySQL}}
 # MySQL. Versions 5.0 and up are supported.
 #
 # Install the MySQL driver
@@ -52,3 +53,28 @@ production:
   database: api_demo_production
   username: api_demo
   password: <%= ENV['API_DEMO_DATABASE_PASSWORD'] %>
+{{/isDBMySQL}}
+{{#isDBSQLite}}
+# SQLite version 3.x
+#   gem install sqlite3-ruby (not necessary on OS X Leopard)
+development:
+  adapter: sqlite3
+  database: db/development.sqlite3
+  pool: 5
+  timeout: 5000
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  adapter: sqlite3
+  database: db/test.sqlite3
+  pool: 5
+  timeout: 5000
+
+production:
+  adapter: sqlite3
+  database: db/production.sqlite3
+  pool: 5
+  timeout: 5000
+{{/isDBSQLite}}