一张参考图
说明
从上图我们可以方便的看出schmea 能做的事情
- Generate a GraphQL equivalent of your schema to control your GraphQL API.（生成 graphql api）
- Control permissions for accessing and modifying data.（访问控制）
- Generate forms on the client.（client 以及表单生成）
- Validate form contents on submission.（数据校验）
- Auto-generate paginated, searchable datatables.（自动生成分页，查询）
- Auto-generate smart cards for displaying individual documents.（智能卡生成）
- Add callbacks on document insert or edit.（数据添加，编辑时候的回掉）
参考例子
- schema
类似graphql-yogo 以及graphql-js 的schema 定义
const schema = { ?// default properties ?_id: { ???type: String, ???optional: true, ???canRead: ["guests"] ?}, ?createdAt: { ???type: Date, ???optional: true, ???canRead: ["guests"], ???onCreate: ({ newDocument, currentUser }) => { ?????return new Date(); ???} ?}, ?userId: { ???type: String, ???optional: true, ???canRead: ["guests"], ???resolveAs: { ?????fieldName: "user", ?????type: "User", ?????resolver: (movie, args, context) => { ???????return context.Users.findOne( ?????????{ _id: movie.userId }, ?????????{ ???????????fields: context.Users.getViewableFields( ?????????????context.currentUser, ?????????????context.Users ???????????) ?????????} ???????); ?????}, ?????addOriginalField: true ???} ?}, ?// custom properties ?name: { ???label: "Name", ???type: String, ???optional: true, ???canRead: ["guests"], ???canCreate: ["members"], ???canUpdate: ["members"] ?}, ?year: { ???label: "Year", ???type: String, ???optional: true, ???canRead: ["guests"], ???canCreate: ["members"], ???canUpdate: ["members"] ?}, ?review: { ???label: "Review", ???type: String, ???optional: true, ???control: "textarea", ???canRead: ["guests"], ???canCreate: ["members"], ???canUpdate: ["members"] ?}};- 创建collection
实际上上就是graphql api schema 定义以及解析处理
const Movies = createCollection({ ?typeName: "Movie", ?schema, ?resolvers, ?mutations});参考资料
http://docs.vulcanjs.org/schemas.html
vulcanjs schemas&& collections
原文地址：https://www.cnblogs.com/rongfengliang/p/9575786.html