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1/ Remove the parent-children relation on salary structures
Currently it is difficult to see what rules are applied on salary structures.
Most of the structures are inheriting 3 rules (Basic, Gross, Net) from the
'Base for new structures', and those rules are not shown. Same issue if a
structure has another one as parent (as in the French localization).
This bring more annoying issues:
- Since the saas-12.1, we can already set different accounts for different
companies on the salary rules for which we want to post journal entries.
But for the parent rules, like the 'NET' amount, it's impossible to post
the journal entries on different account for different salary structures.
(eg: for CP200 employees and CP200 workers). As the rules are following
a M2M relation on the structure, we have to remove the parent_id and to
recreate all the rules in the final structure.
- If we are not at ease with the M2M relation (which is the case for most
of the end users), we will simply modify the rule on the parent structure.
This was already done on the French localization on which we modified the
code, sequence and the name. This could have some desastrous consequences
as this will break the order on which the rules are computed for other
structures for the sequence, or break other integration with the payroll
as we also modify the code, for example the salary configurator.
As this parent-children relation on structure could cause several issues
difficult to spot and as this is quite difficult to correctly visualize the
structure composition, it is better to remove it and define all the rules
inside the structure itself. This improves also the code readability as we
are not trying to recursively retrieve the rules and find a proper sequence
inside them.
2/ Make the rules on the salary structure a o2m instead of a m2m
The issues described just above indicates that it would be better to remove
the M2M relation between salary structures and salary rules, and make it
a O2M relation instead. That way, no more confusion and misconfiguration of
the rules fields (code, sequence, accounts, ...).
3/ Remove the parent-children relation on rules
A salary rule can have a parent salary rule. This mechanism, which is
not obvious at all for an end user allows to specify a parent rules.
If the condition is met for the parent rule (eg: the employee has at least
1 child), all the children rules could be applied (eg: Deduction of 90 euros
if the number of children is between 1 and 1).
Visually it doesn't make a lot of sense, as it displays one line with an
amount of 0 for the parent, and one line with the real amount for each
applied child. On the other hand, no child rule is linked to the structure
and an end user has to click on the parent rule, to see the children and
understand that something mystic and hidden is existing.
This is equivalent to define as many classic rules as we have children, or
even better, define 1 rule that will compute the real amount directly,
as the number of children can be accessed from the localdict when computing
the salary line.
This commit also removed the relation.
4/ Clean some brols in the code (technical)
The 3 first points of the spec allow us to clean a little the code readability
and complexity.
5/ Adapt all the localizations for these changes
All the localizations are impacted by those changes. What is done in this commit
is mainly:
- l10n_be_hr_payroll: Make 3 separated files for the 3 existing structures (the
fourth one, belgian worker, is not correct and is removed). For each
structure, define explicitely the rules (in the correct order by sequence).
This multiplies the total number of rules as some of them were shared (like
the withholding tax rule for example), but all the code that is supposed to be
modified each year/quarter/whenever the government decides to modify the law
has been moved into a python file, and is available the computation context.
This will also allow us to update the computation rules without having to
update the module.
- l10n_fr_hr_payroll: There were 3 rules following this scheme:
Base for new structure
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Basic structure
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Cadre Non-Cadre
All the rules parent rules have been duplicated into the 2 remaining
structures, cadre and non-cadre. There were a lot of parent-children relations
between the rules that have been adapted to the new model.
- l10n_in_hr_payroll: There was a lot of rules in data, and a structure in demo
data, which was using 4 or 5 of these rules. As the rules doesn't seem to make
a lot of sense altogether, everything was moved in demo data.
6/ Introduce a new Salary Structure Type model
Currently we have a model hr.contract.type with a M2O on the contracts. This has
never been used in 9 years and is removed in this commit. On the other hand, we
would like to define a new model hr.payroll.structure.type (eg: CP200 Employee),
which will line all the salary structures the Belgian localization could bring
(Classic salary, double holidays, 13th month, ...). This field is defined on the
structure, and is displayed on the contract (as the same place than the contract
type we just removed).
On this model we could also define some fields like:
- The default pay period: Selection field, default = monthly. This is applied on
the contract when selecting the structure.
- The Working Schedule, m2o. This is applied on the contract when selecting the
structure
For example, on the 'commission paritaire' for teachers, we could set the
default pay period to 'Every 15 days' and the working schedule to '19 hours /
week'. Every contract under this structure would take those values.
Migration
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For a migration point of view:
- All the rules that had a parent_rule_id should be set to
appears_on_payslip=False. The column parent_rule_id can be dropped afterward.
- All the rules that are coming from a parent structure or higher should be
duplicated and the field 'struct_id' should be set on the current structure.
The column parent_id can be dropped afterward.
- All the rules that were defined on the structure should have the field
'struct_id' defined on them.
- The rules that are not linked to a structure should be unlinked.
- The column type_id on the contract could be dropped, no need to keep the
values too.
- A default structure type is defined in data ('Employee'). This could be set to
all the existing structure for the newly created 'type_id' field.
TaskID: 1942832
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