Thank you for your answer Serge

I know this syntax and use it for other research

But in that case, i have to find a product by its price in a pricelist, not sale price but extra price!

To give you more details :

In a sale order, when you click "add a product" (with popup)

In the popup, in the field Product, you choose "Search more..."

And in the treeview, i want to find a product by its price in the pricelist of the customer choosen in the sale order

There is already a column 'price' with the good price according to the customer choosen.

I tried to add the line below in the view : product.product_search_form_view

<field name="price" string="Prix d'une liste de prix" filter_domain="[('price', '=', self)]"/>

The option is display but the research doesn't works

Did you mean the Sales Price column?

No i mean the "price" column between "Cost" and "Quantity on hand" columns.

But the column "price" is display only if there is a pricelist (if i well understood this line in the view product.product_product_tree_view : <field name="price" invisible="not context.get('pricelist',False)"/>)

"price" is a computed column wich call "_compute_product_price" in product.py

In fact, i think this field is filled dynamically according the choosen customer

How do you display the 'price' field? I can't show mine even though I enabled it.

I think to display this column, you have to activate price list

In settings, in sale module, activate "Pricelists" and choose one of the 2 options (advanced prices rules for my part)

Otherwise, just note that it is displayed only in the search treeview when you are looking for a product from the sale.order.line popup

To have the popup, you need to add those lines in an inherited view of sale.view_order_form :

<xpath expr="//field[@name='order_line']/tree" position="attributes">

<attribute name="editable"/>

</xpath>

Follow this :

In a sale order, when you click "add a product" (with popup)

In the popup, in the field Product, you choose "Search more..."

And in the other popup with all product in a tree view, you will have (for my case) a column "price"