The template is used to add a button that allow to show archives , it's like an activation button near to "new" button on the tree view , can you help me please how pass context from the backend to the template ?? here is my code
@api.model
def default_get(self, fields):
model_name = "bp.cdc"
view_name = 'cdc.tree'
view_id = self.env['ir.actions.act_window'].search([('model', '=', model_name)and('name','=',view_name)], limit=1).id
context = dict(self._context)
context.update({'default_view_id': view_id})
self = self.with_context(context)
return super(BpCdc, self).default_get(fields)

template : <templates xml:space="preserve">
<t t-name="cdcArchivesCdc.Buttons" t-inherit="web.ListView.Buttons" t-inherit-mode="extension">
<xpath expr="//div[hasclass('o_list_buttons')]" position="inside">
<button class="btn btn-secondary" type="button" t-on-click="display_archives"
t-if="view_id == 'view_cdc_tree'" id="display_archives_button">
Archives
</button>
</xpath>
</t>

js :
/** @odoo-module **/

import { ListController } from '@web/views/list/list_controller';
import { patch } from '@web/core/utils/patch';
import { useService } from '@web/core/utils/hooks';

let isChecked = false;

patch(ListController.prototype,{
setup() {
super.setup(...arguments);
this._action = useService("action");
this.isChecked = isChecked;
},

display_archives() {
isChecked = !isChecked;
this.isChecked = isChecked;

if (this.isChecked == true){
this._action.doAction({
type: "ir.actions.act_window",
name: "Cahiers des charges archivés",
domain: [["jours_restants", "=", 0]],
views: [[1927, "list"], [false, "form"]],
res_model: "bp.cdc",
target: 'self',
view_mode: "list,form"
});
}else if(this.isChecked == false){
this._action.doAction({
type: "ir.actions.act_window",
name: "Cahiers des charges en cours",
domain: [["jours_restants", "!=", 0]],
views: [[1927, "list"], [false, "form"]],
res_model: "bp.cdc",
target: 'self',
view_mode: "list,form"
});
}
}

});
btw i wanted to change the style of the button to btn-primary when its clicked and i didnt know how

any help to get acces to the view_id in the qweb contaxt , i didnt know how to prepare it in the backend !!!

any help to get acces to the view_id in the qweb contaxt , i didnt know how to prepare it in the backend !!!