project.py

# coding: utf-8
# © 2015 David BEAL @ Akretion
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

from openerp import api, fields, models, SUPERUSER_ID, _
from openerp.exceptions import Warning as UserError
from openerp.tools.safe_eval import safe_eval


class ProjectTask(models.Model):
    _inherit = 'project.task'

    @api.model
    def _get_origin(self):
        if self.model_reference:
            rec_name = self.model_reference._rec_name
            if rec_name:
                self.task_origin = self.model_reference.display_name

    @api.model
    def _authorised_models(self):
        """ Inherit this method to add more models depending of your
            modules dependencies
        """
        models = self.env['ir.model'].search([('model', '!=', 'project.task')])
        return [(x.model, x.name) for x in models]

    action_id = fields.Many2one(
        'ir.actions.act_window', string="Action",
        help="Action called to go to the original window.")
    model_reference = fields.Reference(
        selection='_authorised_models')
    task_origin = fields.Char(compute='_get_origin')

    @api.model
    def default_get(self, fields):
        vals = super(ProjectTask, self).default_get(fields)
        if 'from_model' in self._context and 'from_id' in self._context:
            vals['model_reference'] = '%s,%s' % (self._context['from_model'],
                                                 self._context['from_id'])
        if 'from_action' in self._context:
            vals['action_id'] = self._context['from_action']
        return vals

    @api.multi
    def goto_document(self):
        self.ensure_one()
        if self.model_reference:
            action = {
                'name': 'Task to original document',
                'res_model': self.model_reference._model._name,
                'res_id': self.model_reference.id,
                'type': 'ir.actions.act_window',
                'target': 'current',
                'view_mode': 'form',
            }
            if self.action_id:
                action['id'] = self.action_id.id
                action['action_id'] = self.action_id.id
                view = [x.view_id for x in self.action_id.view_ids
                        if x.view_mode == 'form']
                if view:
                    view_ref = self.env['ir.model.data'].search(
                        [('res_id', '=', view[0].id),
                         ('model', '=', 'ir.ui.view')])
                    if view_ref:
                        action['context'] = {'form_view_ref': '%s.%s' % (
                            view_ref.module, view_ref.name)}
            return action
        raise UserError(_(
            "Field 'Task Origin' is not set.\n"
            "Impossible to go to the original document."))


class IrActionActWindows(models.Model):
    _inherit = 'ir.actions.act_window'

    def read(self, cr, uid, ids, fields=None, context=None,
             load='_classic_read'):
        if context is None:
            context = {}

        def update_context(action):
            action['context'] = safe_eval(action.get('context', '{}'))
            action['context'].update({
                'from_model': context.get('active_model'),
                'from_id': context.get('active_id'),
            })
            if 'params' in context and 'action':
                action['context'].update({
                    'from_action': context['params'].get('action')})
            if 'params' in context and 'action':
                action['context'].update({
                    'from_action': context['params'].get('action')})
        res = super(IrActionActWindows, self).read(
            cr, uid, ids, fields=fields, context=context, load=load)
        if isinstance(ids, list):
            action_id = ids[0]
        else:
            action_id = ids
        task_action_id = self.pool['ir.model.data'].xmlid_to_res_id(
            cr, SUPERUSER_ID,
            'project_model_to_task.task_from_elsewhere')
        if action_id == task_action_id:
            if isinstance(res, list):
                for elem in res:
                    update_context(elem)
            else:
                update_context(res)
        return res