Hi guys

I've built a selection that gets all the modelnames from the database:

model_names = fields.Many2one('ir.model', 'Model to use')

This builds a selection where the user can see all models and choose one out. The next step that I want is that when the user selects a model from the selection that the next field (a Many2Many) is automaticly getting all fields that are in the model the user selects.
For example: the user chooses res.partner from the model_names selection. The next field (Many2Many) should now show all fields that are available in the res.partner model.

How exactly should I do this? I should access the model ir.model.fields and get every single field that matches the correct model the user selected. I assume I should create an onchange that loads all fieldnames in the Many2Many when the user selected something in the Many2one? Would this also be possible with a domain_filter?

XML file:

     <record model="ir.ui.view" id="my_form_view">
            <field name="name">myname.form</field>
            <field name="model">model.builder</field>
            <field name="arch" type="xml">
                <form string="My Form">
                    <sheet string="test">
                        <group>
                            <field name="name"/>
                <field name="model_names"/>
                <field name="fields_to_use"/>
                        </group>
             <notebook>
                            <page string="Advanced" name="Advanced">
                
                </page>
                </notebook>
            </sheet>
                </form>
            </field>
        </record>

Python code:

from openerp import models, fields, api

class MyClass(models.Model):
    _name = 'model.builder'

    name = fields.Char(string="Title", required=True)
    model_names = fields.Many2one('ir.model', 'Model to use', help='The model that you use here will give you access to all fields from this model. This will auto-generate the fields in the next dropdown.', required=True)
    fields_to_use = fields.Many2many('ir.model.fields', 'field_names_model', required=True)

    @api.one
    @api.depends(
        'model_names',
        'model_names.field_id',
        'model_names.field_id.model_id',
    )
    def _get_names(self):
        self.fields_to_use_computed = self.model_names.field_id.filtered(lambda l: l.model_id.id == self.model_names.id)    

    fields_to_use_computed = fields.Many2many('ir.model.fields', compute='_get_names', string='Fields to use COMPUTED')

    @api.onchange('fields_to_use_computed')
    def do_stuff(self):
        self.fields_to_use=self.fields_to_use_computed

I'd love some help as I have no clue here.

Thanks
Yenthe