book resolvers, working server, example orm config

backend/ormconfig.json

@@ -0,0 +1,6 @@
+{
+  "type": "sqlite",
+  "database": "./db.sqlite3",
+  "entities": ["./src/graphql/models/*.ts"],
+  "synchronize": true
+}

backend/src/graphql/inputs/CreateBookInput.ts

@@ -0,0 +1,10 @@
+import { InputType, Field } from 'type-graphql'
+
+@InputType()
+export class CreateBookInput {
+  @Field()
+  title: string;
+
+  @Field()
+  author: string;
+}

backend/src/graphql/inputs/UpdateBookInput.ts

@@ -0,0 +1,13 @@
+import { InputType, Field } from 'type-graphql'
+
+@InputType()
+export class UpdateBookInput {
+  @Field({ nullable: true })
+  title?: string;
+
+  @Field({ nullable: true })
+  author?: string;
+
+  @Field({ nullable: true })
+  isPublished?: boolean;
+}

backend/src/graphql/models/Book.ts

@@ -0,0 +1,22 @@
+import { Entity, BaseEntity, PrimaryGeneratedColumn, Column } from 'typeorm'
+import { ObjectType, Field, ID } from 'type-graphql'
+
+@Entity()
+@ObjectType()
+export class Book extends BaseEntity {
+  @Field(() => ID)
+  @PrimaryGeneratedColumn()
+  id: string;
+
+  @Field(() => String)
+  @Column()
+  title: string;
+
+  @Field(() => String)
+  @Column()
+  author: string;
+
+  @Field(() => Boolean)
+  @Column({ default: false })
+  isPublished: boolean;
+}

backend/src/graphql/resolvers.ts

@@ -1 +0,0 @@
-export default []

backend/src/graphql/resolvers/BookResolver.ts

@@ -0,0 +1,41 @@
+import { Resolver, Query, Mutation, Arg } from 'type-graphql'
+import { Book } from '../models/Book'
+import { CreateBookInput } from '../inputs/CreateBookInput'
+import { UpdateBookInput } from '../inputs/UpdateBookInput'
+
+@Resolver()
+export class BookResolver {
+  @Query(() => [Book])
+  books() {
+    return Book.find();
+  }
+
+  @Query(() => Book)
+  book(@Arg("id") id: string) {
+    return Book.findOne({ where: { id } });
+  }
+
+  @Mutation(() => Book)
+  async createBook(@Arg("data") data: CreateBookInput) {
+    const book = Book.create(data);
+    await book.save();
+    return book;
+  }
+
+  @Mutation(() => Book)
+  async updateBook(@Arg("id") id: string, @Arg("data") data: UpdateBookInput) {
+    const book = await Book.findOne({ where: { id } });
+    if (!book) throw new Error("Book not found!");
+    Object.assign(book, data);
+    await book.save();
+    return book;
+  }
+
+  @Mutation(() => Boolean)
+  async deleteBook(@Arg("id") id: string) {
+    const book = await Book.findOne({ where: { id } });
+    if (!book) throw new Error("Book not found!");
+    await book.remove();
+    return true;
+  }
+}

backend/src/index.ts

@@ -3,15 +3,12 @@ import express from 'express'
 import { graphqlHTTP } from 'express-graphql'
 import { createConnection } from 'typeorm'
 import { buildSchema } from 'type-graphql'
-// import resolvers from './graphql/resolvers'
-const resolvers: [string] = ['']
+import { BookResolver } from "./graphql/resolvers/BookResolver"
 // import queryComplexity, { simpleEstimator, fieldConfigEstimator } from "graphql-query-complexity";
 
 async function main() {
-  //const connection = await createConnection()
-  const schema = await buildSchema({
-      resolvers
-  })
+  const connection = await createConnection()
+  const schema = await buildSchema({ resolvers: [BookResolver]})
   const server = express();
 
   server.use('/api',
@@ -57,7 +54,7 @@ async function main() {
   // app.get("/playground", expressPlayground({ endpoint: "/graphql" }));
   server.listen(4000, () => {
     console.log(
-      `Server is running, GraphQL Playground available at http://localhost:4000/playground`,
+      `Server is running, GraphIQL available at http://localhost:4000/api`,
     );
   });
 }

backend/tsconfig.json

@@ -30,8 +30,7 @@
     // "strictNullChecks": true,                    /* Enable strict null checks. */
     // "strictFunctionTypes": true,                 /* Enable strict checking of function types. */
     // "strictBindCallApply": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // TODO: "strictPropertyInitialization": false
-    // "strictPropertyInitialization": true,        /* Enable strict checking of property initialization in classes. */
+    "strictPropertyInitialization": false,          /* Enable strict checking of property initialization in classes. */
     // "noImplicitThis": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */
     // "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */