How to use attrs in odoo17 ?

How to use ATTRS in odoo17 ?

• The can be used to dynamically change the value of the field.
• he attrs attribute is used within the XML views of Odoo modules to specify when a field should be visible, invisible, readonly, or required based on certain conditions.
  

• There are three attributes available.

1. invisible
2. required
3. readonly

invisible :-

• This attribute is used to make a field invisible based on certain conditions..

required :-

• This attribute is used to make a field required based on certain conditions.
  

readonly :-

• This attribute is used to make a field read-only based on certain conditions.
  

Example :

1. invisible :-                       

​<field name="card_number" invisible=”state != 'draft' "/>

• It’s in invisible attributes so, you can not see the card_number.

 2. required :- 

<field name="purchase_date" required=”state == 'draft' "/>

• It’s in the required attributes so, you can not blank this field.

3. readonly :-

 <field name="gift_price" readonly=”state != 'draft' "/>

• It's read only is fixed attributes so, you can not change or edit values. 

now we add this in the button for our specific condition like this,

<button string=“Confirm” type= “object”  name=“move_on_confirm” class=“oe_highlight”

invisible=”state == ‘confirm’ ” />