如何根据ids搜索（向导）填充many2many字段

Question

I need a many2many(product_product_ids) filled based on search result. For example, I have a search button defined on wizard view(search_test):

<group>
    <field name="quantity"/>
    <field name="product_product_ids"/>
</group>
 <footer>
    <button name="search_test" type="object" string="Search" class="oe_highlight"/>
       or
    <button string="Cancell" class="oe_link" special="cancel"/>
 </footer>

In wizard model, I have defined these fields and functions:

class sale_order_add_balerce(models.TransientModel):
    _name = 'sale.order.add_balerce'
    _description = 'Sale order add balerce'

    _columns = {
    'product_product_ids': fields.many2many('product.product', string='Products'),
    'quantity' : fields.float('Quantity', default='1.0')                
}
    def search_test(self, cr, uid, ids, context=None):
        if context is None:
            context = {}
        product_obj=self.pool.get('product.product')
        #search process
        product_ids_list =  product_obj.search(cr, uid, [], context=context)
        print product_ids_list
        #populating many2many field
        self.write(cr, uid, ids, {'product_product_ids': (6, 0, [product_ids_list])})
        return {
            'res_model': 'product.product',
            'type':'ir.ui.view',
            'context': context, 
            'res_id': ids[0] #open wizard again
        }                

In line

self.write(cr, uid, ids, {'product_product_ids': (6, 0, [product_ids_list])})

I attempt to update many2many field after search process, but nothing happens and I see no errors I have also tried with these variants:

self.write(cr, uid, ids, {'product_product_ids': (0, 0, [product_ids_list])})

self.create(cr, uid,{'product_product_ids': (6, 0, [product_ids_list])})

self.create(cr, uid, ids, {'product_product_ids': (0, 0, [product_ids_list])})

However, I still don't get my many2many field filled(I don't see any changes in view).

Does anyone have a suggestion?

Answer 1

for your method search_test(), change the return to

return  {
            'name': 'Name for your window',
            'type': 'ir.actions.act_window',
            'view_type': 'form',
            'view_mode': 'form',
            'res_model': 'sale.order.add_balerce',
            'target': 'new',
            'res_id': ids[0],
            'context': context,
        }

Answer 2

• One2many and Many2many use a special "commands" format to manipulate the set of records stored in/associated with the field.

This format is a list of triplets executed sequentially, where each triplet is a command to execute on the set of records. Not all commands apply in all situations. Possible commands are:

(0, _, values)

adds a new record created from the provided value dict.

(1, id, values)

updates an existing record of id id with the values in values. Can not be used in create().

(2, id, _)

removes the record of id id from the set, then deletes it (from the database). Can not be used in create().

(3, id, _)

removes the record of id id from the set, but does not delete it. Can not be used on One2many. Can not be used in create().

(4, id, _)

adds an existing record of id id to the set. Can not be used on One2many.

(5, _, _)

removes all records from the set, equivalent to using the command 3 on every record explicitly. Can not be used on One2many. Can not be used in create().

(6, _, ids)

replaces all existing records in the set by the ids list, equivalent to using the command 5 followed by a command 4 for each id in ids. Can not be used on One2many.

Note

Values marked as _ in the list above are ignored and can be anything, generally 0 or False.

Answer 3

Many2many

For a many2many field, a list of tuples is expected. Here is the list of tuple that are accepted, with the corresponding semantics.

(0, 0, { values }) link to a new record that needs to be created with the given values dictionary

(1, ID, { values }) update the linked record with id = ID (write values on it)

(2, ID) remove and delete the linked record with id = ID (calls unlink on ID, that will delete the object completely, and the link to it as well)

(3, ID) cut the link to the linked record with id = ID (delete the relationship between the two objects but does not delete the target object itself)

(4, ID) link to existing record with id = ID (adds a relationship)

(5) unlink all (like using (3,ID) for all linked records)

(6, 0, [IDs]) replace the list of linked IDs (like using (5) then (4,ID) for each ID in the list of IDs)

See more about Many2many

default_get :

Returns default values for the fields in fields_list. default_get method is called when your wizard/form is load, you need to override this method to do this.

Syntax:

default_get(self, cr, uid, fields_list, context=None):

Parameters:

fields_list (list) : list of fields to get the default values for (example ['field1', 'field2',])

Returns:

dictionary of the default values (set on the object model class, through user preferences, or in the context)

Solution:

And finally your solution is overriding default_get method to set default value for many2many field.

def default_get(self,cr,uid,fields,context=None):
        res = super(sale_order_add_balerce, self).default_get(cr, uid, fields, context=context)
        product_obj=self.pool.get('product.product')
        product_ids_list =  product_obj.search(cr, uid, [], context=context)
        res["product_product_ids"] = [(6,0,[product_ids_list])]
        return res    

Answer 4

Replace this code

self.write(cr, uid, ids, {'product_product_ids': (6, 0, [product_ids_list])})

to

self.write(cr, uid, ids, {'product_product_ids': [(6, 0, [product_ids_list])]})

Only you have syntax mistake to write ids on many2many field. It will take list of tuple as argument. General syntax is

'many2many_fieldname': [(6, 0, [list_of_ids])] 

For more help you may visit many2many field document.