From 4d420a53cf9796ce635d16f6832b6c5f1bb7dc8a Mon Sep 17 00:00:00 2001
From: Carlton Gibson <carlton.gibson@noumenal.es>
Date: Fri, 9 Mar 2018 08:50:42 +0100
Subject: [PATCH] Refs #29180 -- Added MigrationGraph._generate_plan() for
testing.
---
django/db/migrations/graph.py | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/django/db/migrations/graph.py b/django/db/migrations/graph.py
index db8a52919c..c1116fd444 100644
--- a/django/db/migrations/graph.py
+++ b/django/db/migrations/graph.py
@@ -352,6 +352,14 @@ class MigrationGraph:
def _nodes_and_edges(self):
return len(self.nodes), sum(len(node.parents) for node in self.node_map.values())
+ def _generate_plan(self, nodes, at_end):
+ plan = []
+ for node in nodes:
+ for migration in self.forwards_plan(node):
+ if migration in plan or at_end or migration not in nodes:
+ plan.append(migration)
+ return plan
+
def make_state(self, nodes=None, at_end=True, real_apps=None):
"""
Given a migration node or nodes, return a complete ProjectState for it.
@@ -364,11 +372,7 @@ class MigrationGraph:
return ProjectState()
if not isinstance(nodes[0], tuple):
nodes = [nodes]
- plan = []
- for node in nodes:
- for migration in self.forwards_plan(node):
- if migration in plan or at_end or migration not in nodes:
- plan.append(migration)
+ plan = self._generate_plan(nodes, at_end)
project_state = ProjectState(real_apps=real_apps)
for node in plan:
project_state = self.nodes[node].mutate_state(project_state, preserve=False)