How to update any view from python code, before rendering completion, in Odoo?

Question

I have a problem with passing value for colors argument in my view element. So i have my model which has a function to return colors:

class MyTask(models.Model):
     _inherit = "project.task"
     is_special=fields.Boolean()     

     @api.model
     def get_colors(self):
          return 'red: is_special == true;'

And I also have got my view which looks like this:

<record id="my_module_timeline" model="ir.ui.view">
<field name="model">project.task</field>
<field name="type">timeline</field>
<field name="arch" type="xml">
    <timeline date_start="date_start"
            date_stop="date_end"
            default_group_by="project_id"
            event_open_popup="true"
            colors= <-- how can i get the value from my model get_colors() function?
            >
    </timeline>
</field>

colors argument has to be string, and it cannot be a field of model. I tried a lot options to get this string from model function, but without good results.

<timeline> element is just example it can be also tree, calendar etc. For tests i got it from:

https://github.com/OCA/web/tree/11.0/web_timeline

It is possible in this way?

Thank you.

score 2 · Accepted Answer · answered Feb 07 '19 at 13:23

You can use the fields_view_get method to update the view dynamically from python code (before the view is rendered). This is just an example that I found in Odoo:

@api.model
def fields_view_get(self, view_id=None, view_type='form', toolbar=False, submenu=False):
    res = super(MailThread, self).fields_view_get(
        view_id=view_id, view_type=view_type, toolbar=toolbar, submenu=submenu
    )
    if view_type == 'form':
        doc = etree.XML(res['arch'])
        for node in doc.xpath("//field[@name='message_ids']"):
            # the 'Log a note' button is employee only
            options = safe_eval(node.get('options', '{}'))
            is_employee = self.env.user.has_group('base.group_user')
            options['display_log_button'] = is_employee
            # save options on the node
            node.set('options', repr(options))
        res['arch'] = etree.tostring(doc, encoding='unicode')
    return res

Place it in your model. Look for the node with doc.xpath and update it with node.set

How to update any view from python code, before rendering completion, in Odoo?

1 Answers1