续集间接关联

Question

我有 3 个名为项目、工作区、视图的表，关联是

projects.hasMany(workspace); 
workspace.belongsTo(projects); 

workspace.hasMany(views);
views.belongsTo(workspace);

我需要加入这 3 个表以获得以下查询的输出

select * from projects pro join workspace wrk on  pro.id= wrk.project_id 
join views on wrk.id = views.workspace_id

我尝试了关联

views.belongsTo(projects, { through: workspace.associations.projects });

以下是代码：

View.findAll({
   include: [
     {model: db.workspaces, required: true},
     {model: db.projects, required: true}
   ]
});

但它会生成查询

SELECT *
FROM "views" AS "views"
INNER JOIN "workspaces" AS "workspace" ON "views"."workspace_id" = "workspace"."id"
INNER JOIN "projects" AS "project" ON "views"."project_id" = "project"."id"

views表中不存在project_id，只能通过workspace关联views，如何实现。

Answer 1

尝试关注

Project.hasMany(Workspace,{foreignKey : 'project_id'}); 
Workspace.belongsTo(Project);

Workspace.hasMany(views,{foreignKey: 'workspace_id'});
View.belongsTo(Workspace);

Workspace.findAll({
   include: [
     {model: View, required: true},
     {model: Project, required: true}
   ]
});