#573 fix discriminator handling when referencing classes which only have a superclass, but no subclasses (and add description to ObjectSchema.tsx)

src/components/PayloadSamples/MediaTypeSamples.tsx

@@ -1,9 +1,7 @@
 import * as React from 'react';
-
-import styled from '../../styled-components';
-
 import { DropdownProps } from '../../common-elements';
 import { MediaTypeModel } from '../../services/models';
+import styled from '../../styled-components';
 import { Markdown } from '../Markdown/Markdown';
 import { Example } from './Example';
 import { DropdownLabel, DropdownWrapper, NoSampleLabel } from './styled.elements';
@@ -28,6 +26,7 @@ export class MediaTypeSamples extends React.Component<PayloadSamplesProps, Media
   };
   render() {
     const { activeIdx } = this.state;
+    console.log(this.props);
     const examples = this.props.mediaType.examples || {};
     const mimeType = this.props.mediaType.name;
 

src/components/Schema/ObjectSchema.tsx

@@ -1,16 +1,14 @@
 import { observer } from 'mobx-react';
 import * as React from 'react';
-
-import { SchemaModel } from '../../services/models';
-
 import { PropertiesTable, PropertiesTableCaption } from '../../common-elements/fields-layout';
+import { SchemaModel } from '../../services/models';
+import { mapWithLast } from '../../utils';
 import { Field } from '../Fields/Field';
+import { Markdown } from '../Markdown/Markdown';
+import { OptionsContext } from '../OptionsProvider';
 import { DiscriminatorDropdown } from './DiscriminatorDropdown';
 import { SchemaProps } from './Schema';
 
-import { mapWithLast } from '../../utils';
-import { OptionsContext } from '../OptionsProvider';
-
 export interface ObjectSchemaProps extends SchemaProps {
   discriminator?: {
     fieldName: string;
@@ -47,6 +45,8 @@ export class ObjectSchema extends React.Component<ObjectSchemaProps> {
     const expandByDefault = this.context.expandSingleSchemaField && filteredFields.length === 1;
 
     return (
+      <div>
+        <Markdown compact={true} inline={true} source={this.props.schema.description} />
         <PropertiesTable>
           {showTitle && <PropertiesTableCaption>{this.props.schema.title}</PropertiesTableCaption>}
           <tbody>
@@ -78,6 +78,7 @@ export class ObjectSchema extends React.Component<ObjectSchemaProps> {
             })}
           </tbody>
         </PropertiesTable>
+      </div>
     );
   }
 }

src/components/Schema/Schema.tsx

@@ -1,17 +1,13 @@
 import { observer } from 'mobx-react';
 import * as React from 'react';
-
 import { RecursiveLabel, TypeName, TypeTitle } from '../../common-elements/fields';
-import { FieldDetails } from '../Fields/FieldDetails';
-
+import { l } from '../../services/Labels';
 import { FieldModel, SchemaModel } from '../../services/models';
-
+import { FieldDetails } from '../Fields/FieldDetails';
 import { ArraySchema } from './ArraySchema';
 import { ObjectSchema } from './ObjectSchema';
 import { OneOfSchema } from './OneOfSchema';
 
-import { l } from '../../services/Labels';
-
 export interface SchemaOptions {
   showTitle?: boolean;
   skipReadOnly?: boolean;
@@ -43,10 +39,9 @@ export class Schema extends React.Component<Partial<SchemaProps>> {
 
     if (discriminatorProp !== undefined) {
       if (!oneOf || !oneOf.length) {
-        throw new Error(
-          `Looks like you are using discriminator wrong: you don't have any definition inherited from the ${schema.title}`,
-        );
+        return <ObjectSchema {...(this.props as any)} />;
       }
+
       return (
         <ObjectSchema
           {...{ ...this.props, schema: oneOf![schema.activeOneOf] }}

src/components/SchemaDefinition/SchemaDefinition.tsx

@@ -1,5 +1,4 @@
 import * as React from 'react';
-
 import { DarkRightPanel, MiddlePanel, MimeLabel, Row, Section } from '../../common-elements';
 import { MediaTypeModel, OpenAPIParser, RedocNormalizedOptions } from '../../services';
 import styled from '../../styled-components';

src/components/__tests__/__snapshots__/DiscriminatorDropdown.test.tsx.snap

@@ -1,6 +1,12 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`Components SchemaView discriminator should correctly render discriminator dropdown 1`] = `
+<div>
+  <Markdown
+    compact={true}
+    inline={true}
+    source=""
+  />
   <styled.table>
     <tbody>
       <Field
@@ -106,4 +112,5 @@ exports[`Components SchemaView discriminator should correctly render discriminat
       />
     </tbody>
   </styled.table>
+</div>
 `;

src/services/__tests__/models/Schema.test.ts

@@ -13,7 +13,7 @@ describe('Models', () => {
       const spec = require('../fixtures/discriminator.json');
       parser = new OpenAPIParser(spec, undefined, opts);
       const schema = new SchemaModel(parser, spec.components.schemas.Foo, '', opts);
-      expect(schema.oneOf).toHaveLength(1);
+      expect(schema.oneOf).toHaveLength(0);
       expect(schema.discriminatorProp).toEqual('type');
     });
 

src/services/models/MediaType.ts

@@ -1,12 +1,10 @@
 import * as Sampler from 'openapi-sampler';
-
 import { OpenAPIMediaType } from '../../types';
-import { RedocNormalizedOptions } from '../RedocNormalizedOptions';
-import { SchemaModel } from './Schema';
-
 import { isJsonLike, mapValues } from '../../utils';
 import { OpenAPIParser } from '../OpenAPIParser';
+import { RedocNormalizedOptions } from '../RedocNormalizedOptions';
 import { ExampleModel } from './Example';
+import { SchemaModel } from './Schema';
 
 export class MediaTypeModel {
   examples?: { [name: string]: ExampleModel };
@@ -54,7 +52,7 @@ export class MediaTypeModel {
       skipNonRequired: this.isRequestType && this.onlyRequiredInSamples,
       skipWriteOnly: !this.isRequestType,
     };
-    if (this.schema && this.schema.oneOf) {
+    if (this.schema && this.schema.oneOf && this.schema.oneOf.length > 0) {
       this.examples = {};
       for (const subSchema of this.schema.oneOf) {
         const sample = Sampler.sample(subSchema.rawSchema, samplerOptions, parser.spec);

src/services/models/Schema.ts

@@ -1,12 +1,6 @@
 import { action, observable } from 'mobx';
-
-import { OpenAPIExternalDocumentation, OpenAPISchema, Referenced } from '../../types';
-
-import { OpenAPIParser } from '../OpenAPIParser';
-import { RedocNormalizedOptions } from '../RedocNormalizedOptions';
-import { FieldModel } from './Field';
-
 import { MergedOpenAPISchema } from '../';
+import { OpenAPIExternalDocumentation, OpenAPISchema, Referenced } from '../../types';
 import {
   detectType,
   extractExtensions,
@@ -18,8 +12,10 @@ import {
   sortByField,
   sortByRequired,
 } from '../../utils/';
-
 import { l } from '../Labels';
+import { OpenAPIParser } from '../OpenAPIParser';
+import { RedocNormalizedOptions } from '../RedocNormalizedOptions';
+import { FieldModel } from './Field';
 
 // TODO: refactor this model, maybe use getters instead of copying all the values
 export class SchemaModel {
@@ -225,7 +221,7 @@ export class SchemaModel {
     const discriminator = getDiscriminator(schema)!;
     this.discriminatorProp = discriminator.propertyName;
     const implicitInversedMapping = parser.findDerived([
-      ...(schema.parentRefs || []),
+      ...[], //...(schema.parentRefs || []), // including parentRefs in all cases is wrong (it is correct for a class with subclasses, but not for one, which only has a superclass)
       this.pointer,
     ]);
 
@@ -312,6 +308,8 @@ export class SchemaModel {
       innerSchema.title = name;
       return innerSchema;
     });
+
+    this.fields = buildFields(parser, schema, this.pointer, this.options);
   }
 }