[ruby] fix oneOf handling (#5706)

* [ruby] fix oneOf handling

* use previous ruby configs due to issue #4690

* check for oneOf model in base_object

* validate the attributes in partial_oneof_module

modules/openapi-generator/src/main/resources/ruby-client/api_client.mustache

@@ -149,8 +149,9 @@ module {{moduleName}}
           data.each { |k, v| hash[k] = convert_to_type(v, sub_type) }
         end
       else
-        # models, e.g. Pet
-        {{moduleName}}.const_get(return_type).build_from_hash(data)
+        # models (e.g. Pet) or oneOf
+        klass = {{moduleName}}.const_get(return_type)
+        klass.respond_to?(:openapi_one_of) ? klass.build(data) : klass.build_from_hash(data)
       end
     end
 

modules/openapi-generator/src/main/resources/ruby-client/api_doc.mustache

@@ -4,10 +4,13 @@
 
 All URIs are relative to *{{basePath}}*
 
-Method | HTTP request | Description
-------------- | ------------- | -------------
-{{#operations}}{{#operation}}[**{{operationId}}**]({{classname}}.md#{{operationId}}) | **{{httpMethod}}** {{path}} | {{#summary}}{{summary}}{{/summary}}
-{{/operation}}{{/operations}}
+| Method | HTTP request | Description |
+| ------ | ------------ | ----------- |
+{{#operations}}
+{{#operation}}
+| [**{{operationId}}**]({{classname}}.md#{{operationId}}) | **{{httpMethod}}** {{path}} | {{#summary}}{{summary}}{{/summary}} |
+{{/operation}}
+{{/operations}}
 
 {{#operations}}
 {{#operation}}
@@ -67,10 +70,15 @@ end
 
 ### Parameters
 
-{{^allParams}}This endpoint does not need any parameter.{{/allParams}}{{#allParams}}{{#-last}}
-Name | Type | Description  | Notes
-------------- | ------------- | ------------- | -------------{{/-last}}{{/allParams}}
-{{#allParams}} **{{paramName}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{#isFile}}**{{dataType}}**{{/isFile}}{{^isFile}}[**{{dataType}}**]({{baseType}}.md){{/isFile}}{{/isPrimitiveType}}| {{description}} | {{^required}}[optional] {{/required}}{{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}}
+{{^allParams}}
+This endpoint does not need any parameter.
+{{/allParams}}
+{{#allParams}}
+{{#-first}}
+| Name | Type | Description | Notes |
+| ---- | ---- | ----------- | ----- |
+{{/-first}}
+| **{{paramName}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{#isFile}}**{{dataType}}**{{/isFile}}{{^isFile}}[**{{dataType}}**]({{baseType}}.md){{/isFile}}{{/isPrimitiveType}} | {{description}} | {{^required}}[optional]{{/required}}{{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}} |
 {{/allParams}}
 
 ### Return type

modules/openapi-generator/src/main/resources/ruby-client/base_object.mustache

@@ -67,7 +67,9 @@
           end
         end
       else # model
-        {{moduleName}}.const_get(type).build_from_hash(value)
+        # models (e.g. Pet) or oneOf
+        klass = {{moduleName}}.const_get(type)
+        klass.respond_to?(:openapi_one_of) ? klass.build(value) : klass.build_from_hash(value)
       end
     end
 
@@ -93,7 +95,7 @@
           is_nullable = self.class.openapi_nullable.include?(attr)
           next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
         end
-        
+
         hash[param] = _to_hash(value)
       end
       hash

modules/openapi-generator/src/main/resources/ruby-client/model.mustache

@@ -12,7 +12,14 @@ module {{moduleName}}
 {{>partial_model_enum_class}}
 {{/isEnum}}
 {{^isEnum}}
+{{#oneOf}}
+{{#-first}}
+{{>partial_oneof_module}}
+{{/-first}}
+{{/oneOf}}
+{{^oneOf}}
 {{>partial_model_generic}}
+{{/oneOf}}
 {{/isEnum}}
 {{/model}}
 {{/models}}

modules/openapi-generator/src/main/resources/ruby-client/model_doc.mustache

@@ -1,19 +1,12 @@
-{{#models}}{{#model}}# {{moduleName}}::{{classname}}
-
-## Properties
-
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-{{#vars}}**{{name}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{dataType}}**]({{complexType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#isReadOnly}}[readonly] {{/isReadOnly}}{{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}}
-{{/vars}}
-
-## Code Sample
-
-```ruby
-require '{{moduleName}}'
-
-instance = {{moduleName}}::{{classname}}.new({{#vars}}{{name}}: {{example}}{{^-last}},
-                                 {{/-last}}{{/vars}})
-```
-
-{{/model}}{{/models}}
+{{#models}}
+{{#model}}
+{{#oneOf}}
+{{#-first}}
+{{>partial_oneof_module_doc}}
+{{/-first}}
+{{/oneOf}}
+{{^oneOf}}
+{{>partial_model_generic_doc}}
+{{/oneOf}}
+{{/model}}
+{{/models}}

modules/openapi-generator/src/main/resources/ruby-client/model_test.mustache

@@ -11,19 +11,13 @@ require 'date'
 # Please update as you see appropriate
 {{#models}}
 {{#model}}
-describe '{{classname}}' do
-  before do
-    # run before each test
-    @instance = {{moduleName}}::{{classname}}.new
-  end
-
-  after do
-    # run after each test
-  end
+describe {{moduleName}}::{{classname}} do
+{{^oneOf}}
+  let(:instance) { {{moduleName}}::{{classname}}.new }
 
   describe 'test an instance of {{classname}}' do
     it 'should create an instance of {{classname}}' do
-      expect(@instance).to be_instance_of({{moduleName}}::{{classname}})
+      expect(instance).to be_instance_of({{moduleName}}::{{classname}})
     end
   end
 {{#vars}}
@@ -33,7 +27,7 @@ describe '{{classname}}' do
       # assertion here. ref: https://www.relishapp.com/rspec/rspec-expectations/docs/built-in-matchers
       # validator = Petstore::EnumTest::EnumAttributeValidator.new('{{{dataType}}}', [{{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}}])
       # validator.allowable_values.each do |value|
-      #   expect { @instance.{{name}} = value }.not_to raise_error
+      #   expect { instance.{{name}} = value }.not_to raise_error
       # end
       {{/isEnum}}
       {{^isEnum}}
@@ -43,6 +37,42 @@ describe '{{classname}}' do
   end
 
 {{/vars}}
+{{/oneOf}}
+{{#oneOf}}
+{{#-first}}
+  describe '.openapi_one_of' do
+    it 'lists the models referenced in the oneOf array' do
+      expect(described_class.openapi_one_of).to_not be_empty
+      described_class.openapi_one_of.each { |klass| expect { {{moduleName}}.const_get(klass) }.to_not raise_error }
+    end
+  end
+
+  {{#discriminator}}
+  {{#propertyName}}
+  describe '.openapi_discriminator_name' do
+    it 'returns the value of the "discriminator" property' do
+      expect(described_class.openapi_discriminator_name).to_not be_empty
+    end
+  end
+
+  {{/propertyName}}
+  {{#mappedModels}}
+  {{#-first}}
+  describe '.openapi_discriminator_mapping' do
+    it 'returns the key/values of the "mapping" property' do
+      expect(described_class.openapi_discriminator_mapping.values.sort).to eq(described_class.openapi_one_of.sort)
+    end
+  end
+
+  {{/-first}}
+  {{/mappedModels}}
+  {{/discriminator}}
+  describe '.build' do
+    it 'returns the correct model' do
+    end
+  end
+{{/-first}}
+{{/oneOf}}
 end
 {{/model}}
 {{/models}}

modules/openapi-generator/src/main/resources/ruby-client/partial_model_generic.mustache

@@ -42,6 +42,16 @@
       }
     end
 
+    # Returns all the JSON keys this model knows about{{#parent}}, including the ones defined in its parent(s){{/parent}}
+    def self.acceptable_attributes
+      {{^parent}}
+      attribute_map.values
+      {{/parent}}
+      {{#parent}}
+      attribute_map.values.concat(superclass.acceptable_attributes)
+      {{/parent}}
+    end
+
     # Attribute type mapping.
     def self.openapi_types
       {
@@ -75,19 +85,6 @@
 
     {{/-last}}
     {{/anyOf}}
-    {{#oneOf}}
-    {{#-first}}
-    # List of class defined in oneOf (OpenAPI v3)
-    def self.openapi_one_of
-      [
-    {{/-first}}
-      :'{{{.}}}'{{^-last}},{{/-last}}
-    {{#-last}}
-      ]
-    end
-
-    {{/-last}}
-    {{/oneOf}}
     {{#allOf}}
     {{#-first}}
     # List of class defined in allOf (OpenAPI v3)
@@ -270,26 +267,6 @@
 
       {{/-first}}
       {{/anyOf}}
-      {{#oneOf}}
-      {{#-first}}
-      _one_of_found = false
-      self.class.openapi_one_of.each do |_class|
-        _one_of = {{moduleName}}.const_get(_class).build_from_hash(self.to_hash)
-        if _one_of.valid?
-          if _one_of_found
-            return false
-          else
-            _one_of_found = true
-          end
-        end
-      end
-
-      if !_one_of_found
-        return false
-      end
-
-      {{/-first}}
-      {{/oneOf}}
       true{{#parent}} && super{{/parent}}
     end
 
@@ -391,4 +368,4 @@
     end
 
 {{> base_object}}
-  end
+  end

modules/openapi-generator/src/main/resources/ruby-client/partial_model_generic_doc.mustache

@@ -0,0 +1,28 @@
+# {{moduleName}}::{{classname}}
+
+## Properties
+
+| Name | Type | Description | Notes |
+| ---- | ---- | ----------- | ----- |
+{{#vars}}
+| **{{name}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{dataType}}**]({{complexType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional]{{/required}}{{#isReadOnly}}[readonly]{{/isReadOnly}}{{#defaultValue}}[default to {{defaultValue}}]{{/defaultValue}} |
+{{/vars}}
+
+## Code Sample
+
+```ruby
+require '{{{gemName}}}'
+
+{{^vars}}
+instance = {{moduleName}}::{{classname}}.new()
+{{/vars}}
+{{#vars}}
+{{#-first}}
+instance = {{moduleName}}::{{classname}}.new(
+{{/-first}}
+  {{name}}: {{example}}{{^-last}},{{/-last}}
+{{#-last}}
+)
+{{/-last}}
+{{/vars}}
+```