diff --git a/addons/cetmix_tower_git/models/cx_tower_git_project_rel.py b/addons/cetmix_tower_git/models/cx_tower_git_project_rel.py
new file mode 100644
index 0000000..d9fba6b
--- /dev/null
+++ b/addons/cetmix_tower_git/models/cx_tower_git_project_rel.py
@@ -0,0 +1,177 @@
+# Copyright (C) 2024 Cetmix OÜ
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import _, api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class CxTowerGitProjectRel(models.Model):
+    """
+    Relation between git projects and other model records.
+    """
+
+    _name = "cx.tower.git.project.rel"
+    _inherit = [
+        "cx.tower.reference.mixin",
+        "cx.tower.yaml.mixin",
+    ]
+    _table = "cx_tower_git_project_rel"
+    _description = "Cetmix Tower Git Project relation to Files and Servers"
+    _log_access = False
+
+    name = fields.Char(related="git_project_id.name", readonly=True)
+    git_project_id = fields.Many2one(
+        comodel_name="cx.tower.git.project",
+        index=True,
+        required=True,
+        ondelete="cascade",
+    )
+    server_id = fields.Many2one(
+        comodel_name="cx.tower.server",
+        index=True,
+        required=True,
+        ondelete="cascade",
+    )
+    file_id = fields.Many2one(
+        comodel_name="cx.tower.file",
+        domain="[('server_id', '=', server_id),"
+        "('source', '=', 'tower'),"
+        "('file_type', '=', 'text')]",
+        required=True,
+        ondelete="cascade",
+    )
+    project_format = fields.Selection(
+        selection=lambda self: self.env[
+            "cx.tower.git.project"
+        ]._selection_project_format(),
+        default=lambda self: self.env["cx.tower.git.project"]._default_project_format(),
+        required=True,
+        string="Format",
+    )
+    auto_sync = fields.Boolean(related="file_id.auto_sync", readonly=False)
+
+    _sql_constraints = [
+        (
+            "project_server_file_format_uniq",
+            "unique(git_project_id, file_id, project_format)",
+            "File is already related to the same project and format",
+        ),
+    ]
+
+    @api.constrains("server_id", "file_id")
+    def _check_server_file_relation(self):
+        """
+        Check if server and file are related.
+        """
+        for record in self:
+            if (
+                record.file_id.server_id
+                and record.server_id != record.file_id.server_id
+            ):
+                raise ValidationError(
+                    _(
+                        "File '%(file)s' doesn't belong to server '%(server)s'",
+                        file=record.file_id.name,
+                        server=record.server_id.name,
+                    )
+                )
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        res = super().create(vals_list)
+
+        # Export project to file
+        res._save_to_file()
+        return res
+
+    def write(self, vals):
+        res = super().write(vals)
+        # Export project to file
+        self._save_to_file()
+        return res
+
+    def action_open_project(self):
+        """
+        Open project record in current window
+        """
+        self.ensure_one()
+        return {
+            "type": "ir.actions.act_window",
+            "name": self.name,
+            "res_model": "cx.tower.git.project",
+            "res_id": self.git_project_id.id,  # pylint: disable=no-member
+            "view_mode": "form",
+            "view_type": "form",
+            "target": "current",
+        }
+
+    def action_open_server(self):
+        """
+        Open server record in current window
+        """
+        self.ensure_one()
+        return {
+            "type": "ir.actions.act_window",
+            "name": self.server_id.name,
+            "res_model": "cx.tower.server",
+            "res_id": self.server_id.id,  # pylint: disable=no-member
+            "view_mode": "form",
+            "view_type": "form",
+            "target": "current",
+        }
+
+    # ----------------------------------------------------
+    # Save project to linked file based on selected format
+    # ----------------------------------------------------
+    def _save_to_file(self):
+        """Save project to linked file using format-specific function."""
+
+        # Get required function based on project format
+        # Following the pattern: _generate_code_<format> where format
+        # is one of the values in _selection_project_format
+        # Function gets a single record as an argument.
+
+        # Save resolved functions to dict for faster access
+        code_generator_functions = {}
+
+        for record in self:
+            # Disconnect file from file template if it is connected
+            if record.file_id.template_id:
+                record.file_id.action_unlink_from_template()
+
+            code_generator_function = code_generator_functions.get(
+                record.project_format
+            )
+            if not code_generator_function:
+                code_generator_function = getattr(
+                    self.git_project_id, f"_generate_code_{record.project_format}", None
+                )
+                if not code_generator_function:
+                    raise ValidationError(
+                        _(
+                            "Code generator function for '%(project_format)s'"
+                            " format not found.",
+                            project_format=record.project_format,
+                        )
+                    )
+                code_generator_functions[
+                    record.project_format
+                ] = code_generator_function
+
+            # Generate code for current record
+            code = code_generator_function(record)
+            if record.file_id.code != code:
+                record.file_id.write({"code": code})
+
+    # ------------------------------
+    # YAML mixin methods
+    # ------------------------------
+    def _get_fields_for_yaml(self):
+        res = super()._get_fields_for_yaml()
+        res += [
+            "file_id",
+            "git_project_id",
+            "project_format",
+            "auto_sync",
+        ]
+        return res