根据 cube.js 中的分层用户 ID 动态过滤数据

Question

I have two tables called Writers and Publications where there is a foreign key publications.writer_id = writers.id

Writers

id (int)	parent_id (int)	role (varchar)	name (varchar)	path (ltree)
1		ADMIN	Firstname Lastname
2	1	EDITOR	Anon Anon	1.2
3	2	WEB EDITOR	Maisy Tickles	1.2.3
4	2	WEB EDITOR	Jack Beanstalk	1.2.4
5	3	WEB PROOFREADER	Sunny Ray	1.2.3.5

Publications

id (int)	writer_id (FK)	publication_name (varchar)	word_length (int)	published (datetime)
1	2	My First Magazine	6000	2019-09-09 09:00:00
2	2	My Second Magazine	6000	2019-09-16 09:00:00
3	3	My First Article	1000	2019-09-23 09:00:00
4	4	My First Article	1500	2019-09-23 09:00:00
5	4	My Second Article	600	2019-10-01 09:00:00
6	5	My First Piece	600	2020-10-01 09:00:00

I want to do a proof of concept in cube.js Developer Playground to show various charts. Is it possible to filter dynamically based on the user_id so that they can only access content that is equal to or in their subtree ie

• If an ADMIN/EDITOR is using, they can see all the publications
• If the WEB EDITOR ( writers.id=4 ) is using the application, they can only see their own articles ( publications.id in (4,5) )
• If the WEB EDITOR ( writers.id=3 ) is using the application, they can see their publication and the WEB PROOFREADER's one ( publications.id in (3,6) )
• The WEB PROOFREADER should only see their publication ( publications.id=6 )

These are the models I have set up so far

cube(`Writers`, {
  sql: `SELECT * FROM public.writers`,
  
  preAggregations: {},
  
  joins: {

    Publications:{
      sql: `${CUBE}.id = ${Publication}.writer_id`,
      relationship: `hasMany`
    }
    
  },
  
  measures: {
    count: {
      type: `count`,
      drillMembers: [id, name, created]
    }
  },
  
  dimensions: {
    id: {
      sql: `id`,
      type: `number`,
      primaryKey: true
    },

 role: {
          sql: `role`,
          type: `string`,
        },
};





cube(`Publications`, {
  sql: `SELECT * FROM public.publications`,
  
  preAggregations: {},
  
  joins: {

    Writer:{
      sql: `${CUBE}.writer_id = ${Writers}.id`,
      relationship: `hasOne`
    }
    
  },
  
  measures: {
    count: {
      type: `count`,
      drillMembers: [id, name, created]
    }
  },

 dimensions: {
     id: {
          sql: `id`,
          type: `number`,
          primaryKey: true
        },

     wordLength: {
              sql: `word_length`,
              type: `number`,
            },
};

I know there are filters and segments but these appear to be static. Is there any way to pass a writer_id to filter the relevant data dynamically? (I have no previous knowledge of JS)

Answer 1

I think these recipes can help you:

• https://cube.dev/docs/recipes/role-based-access
• https://cube.dev/docs/recipes/column-based-access
• https://cube.dev/docs/recipes/passing-dynamic-parameters-in-a-query

Answer 2

I think you can query the cube from your front-end application with a filter of id.