How to display default text in Many2Many tag field

Question

Hi,
I am working on Sales module, create new Sale Order Line in Sale Order form.
I would like to display "--" instead of blank text in Taxes column when user selected nothing.
I tried this code but it did not work.
<field
name="tax_id"
widget="many2many_tags"
options="{'no_create': True}"
domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
attrs="{'readonly': [('qty_invoiced', '>', 0)], * 'placeholder': '--' *}"
/> How can I do that? Thank you!

Dhaval Desai · Accepted Answer

HI,
Here is wrong :
attrs="{'readonly': [('qty_invoiced', '>', 0)], * 'placeholder': '--' *}"
You can use  * placeholder  * outside in attrs.
For Example:
<field
name="tax_id"
placeholder="Your Text"
widget="many2many_tags"
options="{'no_create': True}"
domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
attrs="{'readonly': [('qty_invoiced', '>', 0)]}">
make sure it will helpful.
Thank you.

Bhaviraj Brahmkshatriya · Answer

You can use this code. But this place holder text will not go from even if you select taxes into  tax_id field. <field
name="tax_id"
widget="many2many_tags"
options="{'no_create': True}"
domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
attrs="{'readonly': [('qty_invoiced', '>', 0)]}" * placeholder="--" */>

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