Chapter 6 - Adding Comments to Schema - Complete

api/src/graphql/comments.sdl.js

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+export const schema = gql`
+  type Comment {
+    id: Int!
+    name: String!
+    body: String!
+    post: Post!
+    postId: Int!
+    createdAt: DateTime!
+  }
+
+  type Query {
+    comments: [Comment!]! @skipAuth
+  }
+
+  input CreateCommentInput {
+    name: String!
+    body: String!
+    postId: Int!
+  }
+
+  input UpdateCommentInput {
+    name: String
+    body: String
+    postId: Int
+  }
+
+  type Mutation {
+    createComment(input: CreateCommentInput!): Comment! @skipAuth
+    deleteComment(id: Int!): Comment! @requireAuth
+  }
+`

api/src/services/comments/comments.js

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+import { db } from 'src/lib/db'
+
+export const comments = () => {
+  return db.comment.findMany()
+}
+
+export const comment = ({ id }) => {
+  return db.comment.findUnique({
+    where: { id },
+  })
+}
+
+export const Comment = {
+  post: (_obj, { root }) =>
+    db.comment.findUnique({ where: { id: root.id } }).post(),
+}
+
+export const createComment = ({ input }) => {
+  return db.comment.create({
+    data: input,
+  })
+}
+
+export const deleteComment = ({ id }) => {
+  return db.comment.delete({
+    where: { id },
+  })
+}

api/src/services/comments/comments.scenarios.js

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+import { defineScenario } from '@redwoodjs/testing/dist/api'
+
+export const standard = defineScenario({
+  comment: {
+    one: {
+      data: {
+        name: 'Jane Doe',
+        body: 'I like trees.',
+        post: {
+          create: {
+            title: 'Redwood Leaves',
+            body: 'The quick brown fox jumped over the lazy dog.',
+          },
+        },
+      },
+    },
+
+    two: {
+      data: {
+        name: 'John Doe',
+        body: 'Hug a tree today',
+        post: {
+          create: {
+            title: 'Root Systems',
+            body: 'The five boxing wizards jump quickly',
+          },
+        },
+      },
+    },
+  },
+})
+
+export const postOnly = defineScenario({
+  post: {
+    bark: {
+      data: {
+        title: 'Bark',
+        body: "A tree's bark is worse than its bite",
+      },
+    },
+  },
+})

api/src/services/comments/comments.test.js

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+import { comments, createComment } from './comments'
+
+// Generated boilerplate tests do not account for all circumstances
+// and can fail without adjustments, e.g. Float and DateTime types.
+//           Please refer to the RedwoodJS Testing Docs:
+//       https://redwoodjs.com/docs/testing#testing-services
+// https://redwoodjs.com/docs/testing#jest-expect-type-considerations
+
+describe('comments', () => {
+  scenario('returns all comments', async (scenario) => {
+    const result = await comments()
+
+    expect(result.length).toEqual(Object.keys(scenario.comment).length)
+  })
+
+  scenario('postOnly', 'creates a new comment', async (scenario) => {
+    const comment = await createComment({
+      input: {
+        name: 'Billy Bob',
+        body: 'What is your favorite tree bark?',
+        postId: scenario.post.bark.id,
+      },
+    })
+
+    expect(comment.name).toEqual('Billy Bob')
+    expect(comment.body).toEqual('What is your favorite tree bark?')
+    expect(comment.postId).toEqual(scenario.post.bark.id)
+    expect(comment.createdAt).not.toEqual(null)
+  })
+})