Hi,

I would suggest you to add a new computed field which would be set with statement_ids[0].journal_id in the compute function.

first_journal_id = fields.Many2one('account.journal', compute='_compute_first_journal', store=True)

@api.depends('statement_ids', 'statement_ids.journal_id')
def _compute_first_journal(self):

    for record in self:

        record.first_journal_id = record.statement_ids[0].journal_id.id

Then you can use the new field in the view simply like usual field:

<field name="first_journal_id"/>

PS: be aware - I haven't tested that piece of code above, so please use it as a pre-sample :)

PSPS: if you like the answer - please don't forget to upvote it :) Thanks!

Hi volodymyr,

    seems to be a good aproach but still didn't reach to solve it, surely is because I'm a functional consultant and only know a bit of technical issues.

Created a new field "x_first_journal_id", type "text".
Base properties: readonly "true", store "false", all others "false"
Advanced properties: dependencies "statement_ids", compute:

x_first_journal_id = fields.Many2one('account.journal', compute='_compute_first_journal', store=True)
@api.depends('statement_ids', 'statement_ids.journal_id')
def _compute_first_journal(self):
    for record in self:
        record.x_first_journal_id = record.statement_ids[0].journal_id.id

Saves OK but when I display in a form I get this error:

File "/usr/lib/python3/dist-packages/odoo/tools/safe_eval.py", line 189, in assert_valid_codeobj
    raise ValueError("forbidden opcode(s) in %r: %s" % (expr, ', '.join(opname[x] for x in codes)))
ValueError: forbidden opcode(s) in 'lambda': STORE_ATTR

Tried:
1. changing "store=true"
2. changing the last line for: "record.x_first_journal_id = record.statement_ids[0].journal_id", because I'm not sure about the ".id"

But get the same error, I don't still feel comfortable with the technical-code part. Any idea with this error?.
Thanks for your help !