fix(default): add quotes around json default, closes #22

Author: marcjulian

__tests__/fixtures/table.datamodel.ts

@@ -80,3 +80,10 @@ export const datamodelTableWithBlockIdAndCompositeUnqiue = /* Prisma */ `
     @@unique([email, role])
   }
 `;
+
+export const datamodelTableWithJsonDefault = /* Prisma */ `
+  model Example {
+    id        String @id @default(uuid())
+    jsonField Json   @default("{\\"example\\": 0.7}")
+  }
+`;

__tests__/table.test.ts

@@ -2,6 +2,7 @@ import {
   datamodelSingleTable,
   datamodelTableWithBlockId,
   datamodelTableWithBlockIdAndCompositeUnqiue,
+  datamodelTableWithJsonDefault,
   datamodelTableWithOneCompositeUniqueIndex,
   datamodelTableWithSingleCompositeUniqueIndex,
   datamodelTableWithStringDefaults,
@@ -138,6 +139,7 @@ describe('Tables', () => {
     expect(tables.length).toEqual(1);
     expect(tables[0]).toMatch(expected);
   });
+
   test('generate a table with block id and composite unique index', async () => {
     const dmmf = await generateDMMF(
       datamodelTableWithBlockIdAndCompositeUnqiue
@@ -161,4 +163,20 @@ describe('Tables', () => {
     expect(tables.length).toEqual(1);
     expect(tables[0]).toMatch(expected);
   });
+
+  test('generate a table with json default', async () => {
+    const dmmf = await generateDMMF(
+      datamodelTableWithJsonDefault
+    );
+
+    const expected = `Table Example {
+  id String [pk]
+  jsonField Json [not null, default: '{"example": 0.7}']
+}`;
+
+    const tables = generateTables(dmmf.datamodel.models);
+
+    expect(tables.length).toEqual(1);
+    expect(tables[0]).toMatch(expected);
+  });
 });

src/generator/table.ts

@@ -1,4 +1,4 @@
-import { DBMLKeywords } from './../keywords';
+import { DBMLKeywords, PrismaScalars } from './../keywords';
 import { DMMF } from '@prisma/generator-helper';
 
 export function generateTables(models: DMMF.Model[]): string[] {
@@ -23,9 +23,9 @@ const generateTableIndexes = (model: DMMF.Model): string => {
     : '';
 };
 
-const hasCompositeUniqueIndices = (uniqueFields: string[][]) : boolean => {
-  return uniqueFields.filter(composite => composite.length > 1).length > 0;
-}
+const hasCompositeUniqueIndices = (uniqueFields: string[][]): boolean => {
+  return uniqueFields.filter((composite) => composite.length > 1).length > 0;
+};
 
 const generateTableBlockId = (primaryFields: string[] | undefined): string => {
   if (primaryFields === undefined || primaryFields.length === 0) {
@@ -82,7 +82,11 @@ const generateColumnDefinition = (field: DMMF.Field): string => {
   }
 
   if (field.hasDefaultValue && typeof field.default != 'object') {
-    if (field.type === 'String' || field.kind === 'enum') {
+    if (
+      field.type === PrismaScalars.String ||
+      field.type === PrismaScalars.Json ||
+      field.kind === 'enum'
+    ) {
       columnDefinition.push(`${DBMLKeywords.Default}: '${field.default}'`);
     } else {
       columnDefinition.push(`${DBMLKeywords.Default}: ${field.default}`);

src/keywords.ts

@@ -8,3 +8,15 @@ export enum DBMLKeywords {
   Pk = 'pk',
   Indexes = 'indexes',
 }
+
+export enum PrismaScalars {
+  String = 'String',
+  Boolean = 'Boolean',
+  Int = 'Int',
+  Float = 'Float',
+  DateTime = 'DateTime',
+  Json = 'Json',
+  BigInt = 'BigInt',
+  Decimal = 'Decimal',
+  Bytes = 'Bytes',
+}