python - Odoo model relationship -


i know how make header->detail relationship using one2many relationship. pretty simple, in real world need have more complicated things that.

in case have these tables.

student      homework      paper       test -------------------------------------------- id           id            id          id name         subject       title       score

the student table has

  • one2many homework
  • one2many paper
  • one2many test

and also

  • homework has many2one student
  • paper has many2one student
  • test has many2one student

resulting in these relationships

student      homework      paper       test -------------------------------------------- id           id            id          id name         subject       title       score homework_ids student_id    student_id  student_id paper_ids test_ids

i make form student model , input homework, paper, , test form using one2many widget.

but if wanted have form homework model choose student first , input homework, form i'd see(or input) other information such paper, , test?

using many2many relation between homework, paper, , test have student's paper, , test accessible homework seems weird me. complicates database structure, creating unnecessary many2many relation.

is there way instead of using many2many relation? feel database structure ugly if used that.

this huge concern me looking @ odoo heavily model dependent framework. must start right model first!

when have many2one field can create related field show them in current form.

your case in homework model can create related field one2many field of paper.

          paper_ids = fields.one2many(related='student_id.paper_ids', readonly = true)

i'm assuming field named paper_ids when create related field keep same type in case one2many field , can remove readonly if want user able edit field form. related field compute field not stored in database if want store in database must set store = true.

hope helps you


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