Aftral[premieroctet#116]: added trainees, available trainees and excl…

…uded trainees counts to group

backend/web/server/plugins/aftral-lms/functions.js

@@ -188,6 +188,10 @@ declareVirtualField({model:`group`, field: `excluded_trainees`, instance: `Array
     options: {ref: `user`}
   }
 })
+declareVirtualField({model: `group`, field: `trainees_count`, instance: `Number`, requires: `trainees`})
+declareVirtualField({model: `group`, field: `available_trainees_count`, instance: `Number`, requires: `available_trainees`})
+declareVirtualField({model: `group`, field: `excluded_trainees_count`, instance: `Number`, requires: `trainees,available_trainees`})
+// Group end
 
 const preCreate = async ({model, params, user}) => {
   params.creator=params.creator || user._id

backend/web/server/plugins/aftral-lms/schemas/GroupSchema.js

@@ -56,4 +56,16 @@ GroupSchema.virtual('excluded_trainees', DUMMY_REF).get(function(){
   return differenceIds
 })
 
+GroupSchema.virtual('trainees_count', DUMMY_REF).get(function(){
+  return this.trainees? this.trainees.length : 0
+})
+
+GroupSchema.virtual('available_trainees_count', DUMMY_REF).get(function(){
+  return this.available_trainees? this.available_trainees.length : 0
+})
+
+GroupSchema.virtual('excluded_trainees_count', DUMMY_REF).get(function(){
+  return this.available_trainees.length - this.trainees.length
+})
+
 module.exports = GroupSchema

backend/web/tests/aftral-lms/group.test.js

@@ -115,12 +115,23 @@ describe('Groups', () => {
     await mongoose.connection.close()
   })
 
-  it('must return group removed trainees', async() => {
-    const [data] = await loadFromDb({model: `group`, user, fields: [`trainees`, `sessions.trainees`,`available_trainees`,`excluded_trainees`]})
+  it('must return group attributes', async() => {
+    const [data] = await loadFromDb({model: `group`, user, fields: [
+      `trainees`, 
+      `sessions.trainees`,
+      `available_trainees`,
+      `excluded_trainees`,
+      `trainees_count`,
+      `available_trainees_count`,
+      `excluded_trainees_count`,
+    ]})
     // console.log(JSON.stringify(data.sessions, null, 2))
     // await preCreate({model: `group`, user, params})
     // await prePut({model: `group`, user, id:group._id, params:{sessions:[session2._id, session3._id],creator:user._id}})
     expect(data.trainees.length).toEqual(4)
     expect(idEqual(data.excluded_trainees[0], trainee5._id)).toBeTruthy()
+    expect(data.available_trainees_count).toEqual(5)
+    expect(data.trainees_count).toEqual(4)
+    expect(data.excluded_trainees_count).toEqual(1)
   })
 })