what is related attribute , what it can be used for ? and how to add a related attribute .
I'm trying to add a related field for total amount.
Related Field
In such case we need to take the value from any other table but we already have the reference of that table in our model, in that case we can utilize one functionality with that we can add the multiple fields from the reference table by just having the only one reference field in our model.
One relational field (Many2one) of the source model is mandatory to
have in the destination model to create relational field.
Consider the company_currency_id field from the res.currency model is there in the destination model then you can get the current rate of that currency in your target model.
syntax: v7
_columns = {
'current_rate': fields.related('company_currency_id','rate_silent', type='float', relation='res.currency',digits_compute=dp.get_precision( 'Account'), string='Current Rate', readonly=True),
}
Here,
company_currency_id => the field in the same model through which the new field will be relate,
rate_silent => is the field which you are going to relate with new field, means the field from source model,
relation => is the source model name,
type => is the datatype of the source field
Syntax: v8 and newer version
current_rate = fields.Float(string='Current Rate', related='company_currency_id.rate_silent', store=True, readonly=True)
Note :
Value is available in that field only after you save the record.
When you update value in your newly defined related field it
will be updated in source field as well, though it's always advisable
to set readonly in newly defined field.
In context of Odoo related field means, that its value will be
read from another table (related table) --> store=False
read from another table, but stored in the table its defined on --> store=True
Examples (Odoo V8):
sale.order currency_id: it is persisted in product_pricelist
stock_quant packaging_type_id: it is persisted in product_packaging and stock_quant. Everytime you change the value on product_packinging it will be updated on stock_quant, too, not vice versa.
**Related Field* is used when you wanted to pull a value from another model you can use related field on fields.
Here is an example for you.
order_id = fields.Many2one(comodel_name='sale.order', 'Sale Order')
order_amount = fields.Monetary(string='Order Amount',
store=True,
related='order_id.amount_total')
you must add a Many2one field in the model which relates to the model you want to access a field. in our case model is sale.order.
with the related kwarg you can relate field of the related model defined in the Many2one field. in our case order_id.
Setting the store kwarg will automatically store the value in database. With new API the value of the related field will be automatically updated.(Reference)
Hope this helps!
Related
I've been searching for this for a week now, and still don't find any satisfying answer. If we make any type of relationship to other model in Odoo (in any framework as well) it won't store the data inside it, it will only store its id. Now when the related model get changed, the change will also true for all the child models that's inheriting it.
I want just like in the Sale module, when I change any product in Products model, it doesn't change the same product that's already stored in the orders. Please, any help, I'm very new here to Odoo I used to develop with Java.
An order correspond to the model named sale.order which is in one2many relationship with the model sale.order.line (SOL). one SOL has it s OWN fields for price, vat... which are computed bases on the current state of product at the time of the customer order. That's why the order and its SOL are not updated when the corresponding product attributes (price...) are changed...
In Odoo : an inherited python class EXTENDS the original class (similar to java extends) : in the sale_coupon module, the model located at src/odoo/addons/sale_coupon/models/sale_order.py is :
class SaleOrder(models.Model):
_inherit = "sale.order"
extends the source class SaleOrder defined in the module sale : src/odoo/addons/sale/models/sale.py:
class SaleOrder(models.Model):
name = "sale.order"
That's mean that the inherited class SaleOrder (_inherit) gets the specific attributes (fields) and methods (def) provided and defined in its source(s) class(es) : saleOrder :
origin = fields.Char(string='Source Document', help="Reference of the document that generated this sales order request.")
def _amount_all(self):
""" Compute the total amounts of the SO."""
for order in self:
amount_untaxed = amount_tax = 0.0
for line in order.order_line:
amount_untaxed += line.price_subtotal
amount_tax += line.price_tax
...
And you can add new fields and new methods in your inherited class SaleOrder scope :
reward_amount = fields.Float(compute='_compute_reward_total')
def action_confirm(self):
self.generated_coupon_ids.write({'state': 'new'})
...
return super(SaleOrder, self).action_confirm()
But, you don t need to instantiate theses Classes in your code (you don t need to create yourself Objects).
Theses classes have the basic CRUD-methods provided from models.Model: def create(), def read(), def write(), def unlink()
The source and the inherited class(es) both are connected to the same database-table : sale_order
So one Class-record (python in Odoo) :
self.env['sale.order'].browse(12)
corresponds to one record in the database-table : sale_order
Theses classes (SaleOrder) have the CRUD-methods from model.Model : def create(), def read(), def write(), def unlink() and they can override them in their own scope, where you can optionally call the "parent"-def : super(SaleOrder, self).unlink() :
def unlink(self):
for order in self:
if order.state not in ('draft', 'cancel'):
raise UserError(_('You can not delete a sent quotation or a confirmed sales order. You must first cancel it.'))
return super(SaleOrder, self).unlink()
Relations betweens models are defined using fields :
A relation between the sale.order model and the res.partner model (contact) is created using fields.Many2one:
class SaleOrder(models.Model):
...
partner_id = fields.Many2one('res.partner')
which is reflected in the corresponding database-table.
First of all, If you change the product details It will these details will change accordingly in the sale order after you refresh, about store the id of relation field its the standard way to use,
but there Is another way I think this is the way you looking for which Is store data as a JSON in column with type JSON as an example for sale order line table if you want to store the product as a JSON column it will be like below:
[{"id": 1, "name": "product 1"},]
of course, there Is a way to read and update and create the data into a JSON column you can read about It.
one more way as an example if you want to store the product to the current record of relation table not just store the Id and query to get the result you can just create new fields for data you want to store like if you want to store the name and price with name and id then you must add fields for this date and when you create in order line rather than add just product Id as a relation just add the product data to the new fields you have added before but this is not a good way.
I hope I understand your question and this answer helps you.
raise UserError(_("No inverse field %r found for %r") % (self.inverse_name, self.comodel_name))
odoo.exceptions.UserError: ("No inverse field None found for 'res.sector'", '' )
I'm trying to create a new model and having problems linking it to another model.
You probably declared a One2many field like following:
field_name = fields.One2many('res.sector')
You need to specify the inverse name (mandatory), the name of a Many2one field declared in res.sector that reference the model where you declared the One2many field.
As mentioned above, you need to specify an inverse name on the relation.
For example: (workcenter_id) is the inverse field
equipment_ids = fields.One2many('maintenance.equipment', 'workcenter_id')
How should I get all of the field names from the product.template model and store them in a selection field in a separate model?
Example
Thanks
I manage to fix the issue with the code below, I tried using self in the method get_fields but the following KeyError: product.template occurred so too bypass that I used request instead of self.
The selection field consists of [(product_template_field_name_1, product_template_field_name_string_1),..,(product_template_field_name_n, product_template_field_name_string_n)], n being the number of fields in the product.template model.
from odoo.http import request
def get_fields(self):
fields = [(field, request.env['product.template']._fields[field].string) for field in
request.env["product.template"]._fields]
return fields
field_name = fields.Selection(
selection=lambda self: self.get_fields(),
required=True)
I have a custom object "Car" with a one2many relationship to another object "Trips" which captures the various trips made by the car.I added the trips to the form view of the car so i can see all the trips made by each car. I created a custom many2one field in sale.order called "x_car" related to "Car" and added it to the sale.order form view. Now i want to add a one2many field too, which will show the trips of the car when it is selected in the sale.order form view. How can i achieve that?
I have already tried to create a one2many field in sale.order (trips,car_id) and set related to x_car.trips
I hoped it would pull all the records from Trips based on the selected x_car, but it does not return any data. I know a one2many relationship would typically be based on the object_id (in this case sale_order_id) but is there a way to base it on x_car?
You can use a computed many2many field for such purposes:
class SaleOrder(models.Model):
_inherit = "sale.order"
car_id = fields.Many2one(comodel_name="car")
trip_ids = fields.Many2many(
comodel_name="trip", string="Trips",
compute="_compute_trip_ids")
#api.multi
#api.depends('car_id')
def _compute_trip_ids(self):
for order in self:
order.trip_ids = order.car_id.trip_ids.ids
I bet your field names or a bit off of my example, but i always try to stick to the Odoo guidelines. Just substitute them with your names ;-)
I have a many2one field like this
state = fields.Many2one ("ags.traffic.operation.state")
state has the following fields
name = fields.Char
sequence = fields.Integer
type = fields.Selection
in my view i have
<field name = "state" widget = "statusbar" clickable = "True" / >
how can i access those fields to set a default value?
if you want to define the field that gets shown in the drop-down in your view in your model define _rec_name this tells odoo to display that field (in a drop down or in a many2many tag field) when a many2one or one2one relationship is created between that model and another model. for example if you want the sequence number to display in the drop down just set
_recname = 'sequence'
but by default odoo checks the model's field and if it finds a name field (just like you have defined in your model). it uses that as the default display name.
if you want to search records in odoo you can use the search method. please see the documentation for more information about the odoo ORM
https://www.odoo.com/documentation/8.0/reference/orm.html#openerp.models.Model.browse
search(args[, offset=0][, limit=None][, order=None][, count=False])
but a typical example is
search_records = self.env['your.model'].search([('id', 'in', ids)])