# Copyright 2015 Antiun Ingeniería S.L. - Antonio Espinosa # Copyright 2015-2016 Jairo Llopis # Copyright 2019 brain-tec AG - Olivier Jossen # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html). from flectra import _, api, exceptions, fields, models class IrExportsLine(models.Model): _inherit = "ir.exports.line" _order = "sequence,id" name = fields.Char( store=True, compute="_compute_name", inverse="_inverse_name", help="Field's technical name.", ) field1_id = fields.Many2one( "ir.model.fields", "First field", domain="[('model_id', '=', model1_id)]" ) field2_id = fields.Many2one( "ir.model.fields", "Second field", domain="[('model_id', '=', model2_id)]" ) field3_id = fields.Many2one( "ir.model.fields", "Third field", domain="[('model_id', '=', model3_id)]" ) field4_id = fields.Many2one( "ir.model.fields", "Fourth field", domain="[('model_id', '=', model4_id)]" ) model1_id = fields.Many2one( "ir.model", "First model", readonly=True, default=lambda self: self._default_model1_id(), related="export_id.model_id", ) model2_id = fields.Many2one( "ir.model", "Second model", compute="_compute_model2_id" ) model3_id = fields.Many2one("ir.model", "Third model", compute="_compute_model3_id") model4_id = fields.Many2one( "ir.model", "Fourth model", compute="_compute_model4_id" ) sequence = fields.Integer() label = fields.Char(compute="_compute_label") @api.model def _default_model1_id(self): """Default model depending on context.""" return self.env.context.get("default_model1_id", False) @api.depends("field1_id", "field2_id", "field3_id", "field4_id") def _compute_name(self): """Get the name from the selected fields.""" for one in self: name = "/".join( one.field_n(num).name for num in range(1, 5) if one.field_n(num) ) if name != one.name: one.name = name @api.depends("field1_id") def _compute_model2_id(self): """Get the related model for the second field.""" IrModel = self.env["ir.model"] for one in self: one.model2_id = ( one.field1_id.ttype and "2" in one.field1_id.ttype and IrModel.search([("model", "=", one.field1_id.relation)]) ) @api.depends("field2_id") def _compute_model3_id(self): """Get the related model for the third field.""" IrModel = self.env["ir.model"] for one in self: one.model3_id = ( one.field2_id.ttype and "2" in one.field2_id.ttype and IrModel.search([("model", "=", one.field2_id.relation)]) ) @api.depends("field3_id") def _compute_model4_id(self): """Get the related model for the third field.""" IrModel = self.env["ir.model"] for one in self: one.model4_id = ( one.field3_id.ttype and "2" in one.field3_id.ttype and IrModel.search([("model", "=", one.field3_id.relation)]) ) @api.depends("name") def _compute_label(self): """Column label in a user-friendly format and language.""" for one in self: parts = list() for num in range(1, 5): field = one.field_n(num) if not field: break # Translate label if possible try: parts.append( one.env[one.model_n(num).model] ._fields[field.name] .get_description(one.env)["string"] ) except KeyError: # No human-readable string available, so empty this parts = [] break one.label = ( "{} ({})".format("/".join(parts), one.name) if parts and one.name else False ) def _inverse_name(self): """Get the fields from the name.""" for one in self: # Field names can have up to only 4 indentation levels parts = (one.name or "").split("/") if len(parts) > 4: raise exceptions.ValidationError( _("It's not allowed to have more than 4 levels depth: %s") % one.name ) for num in range(1, 5): if not any(parts) or num > len(parts): # Empty subfield in this case # You could get to failing constraint while populating the # fields, so we skip the uniqueness check and manually # check the full constraint after the loop one.with_context(skip_check=True)[one.field_n(num, True)] = False continue field_name = parts[num - 1] model = one.model_n(num) # You could get to failing constraint while populating the # fields, so we skip the uniqueness check and manually check # the full constraint after the loop one.with_context(skip_check=True)[ one.field_n(num, True) ] = one._get_field_id(model, field_name) if any(parts): # invalidate_cache -> in order to get actual value of field 'label' # in function '_check_name' self.invalidate_cache(ids=one.ids) one._check_name() @api.constrains("field1_id", "field2_id", "field3_id", "field4_id") def _check_name(self): # do also skip the check if label is set or not, when skip_check is set if self._context.get("skip_check"): return for one in self: if not one.label: raise exceptions.ValidationError( _("Field '%s' does not exist") % one.name ) num_lines = one.search_count( [("export_id", "=", one.export_id.id), ("name", "=", one.name)] ) if num_lines > 1: raise exceptions.ValidationError( _("Field '%s' already exists") % one.name ) @api.model def _get_field_id(self, model, name): """Get a field object from its model and name. :param int model: ``ir.model`` object that contains the field. :param str name: Technical name of the field, like ``child_ids``. """ field = self.env["ir.model.fields"].search( [("name", "=", name), ("model_id", "=", model.id)] ) if not field.exists(): raise exceptions.ValidationError( _("Field '%s' not found in model '%s'") % (name, model.model) ) return field def field_n(self, n, only_name=False): """Helper to choose the field according to its indentation level. :param int n: Number of the indentation level to choose the field, from 1 to 3. :param bool only_name: Return only the field name, or return its value. """ name = "field%d_id" % n return name if only_name else self[name] def model_n(self, n, only_name=False): """Helper to choose the model according to its indentation level. :param int n: Number of the indentation level to choose the model, from 1 to 3. :param bool only_name: Return only the model name, or return its value. """ name = "model%d_id" % n return name if only_name else self[name]