Here’s an enhanced version of the ‘student_id’ prefix and padding logic, including the updated `_generate_student_id` method
Updated Python Code for `library_management`
“`python
from odoo import models, fields, api
class LibraryManagement(models.Model)
_name = ‘library.management’
_description = ‘Library Management’
student_id = fields.Char(string=’Student ID’, required=True, copy=False, readonly=True, default=lambda self self._generate_student_id())
name = fields.Char(string=’Name’, required=True)
other fields
@api.model
def _generate_student_id(self)
Prefix and padding configuration
prefix = “LIB/”
padding = 5
Get the last record
last_record = self.search([], order=’student_id desc’, limit=1)
if last_record
last_id = last_record.student_id
if last_id.startswith(prefix)
last_number = int(last_id[len(prefix)])
else
last_number = 0
else
last_number = 0
Generate new student ID
new_number = last_number + 1
new_id = f”{prefix}{str(new_number).zfill(padding)}”
return new_id
@api.model
def create(self, vals)
if ‘student_id’ not in vals or not vals[‘student_id’]
vals[‘student_id’] = self._generate_student_id()
return super(LibraryManagement, self).create(vals)
“`
Key Enhancements
1. `_generate_student_id` Method
It now includes logic to check for the prefix and padding dynamically.
The method handles cases where the prefix might not be present in existing IDs, ensuring the correct generation of IDs.
2. `create` Method
Ensures that if `student_id` is not provided in the `vals`, it will use `_generate_student_id` to create it.
Explanation
Prefix and Padding The prefix (“LIB/”) and padding (5 digits) are set at the start of the `_generate_student_id` method. Adjust these values as needed.
ID Generation It searches for the last record, extracts the numeric part of the last ID, increments it, and pads it to ensure it meets the desired length.
Fallback Handling The code checks if the `student_id` is not provided when creating a new record and generates it if missing.
This approach ensures consistent and predictable generation of student IDs while accommodating various scenarios.