From 204e00c0c57c34528157a739389b6935e4af2f36 Mon Sep 17 00:00:00 2001
From: Claude Paroz <claude@2xlibre.net>
Date: Sat, 13 Feb 2016 19:07:58 +0100
Subject: [PATCH] Fixed #26140 -- Suppressed MySQL warning when inserting
 binary content

Thanks Tim Graham for the review.
---
 django/db/backends/base/operations.py  | 7 +++++++
 django/db/backends/mysql/operations.py | 3 +++
 django/db/models/fields/__init__.py    | 3 +++
 3 files changed, 13 insertions(+)

diff --git a/django/db/backends/base/operations.py b/django/db/backends/base/operations.py
index e3fa8904ef..6cd466411a 100644
--- a/django/db/backends/base/operations.py
+++ b/django/db/backends/base/operations.py
@@ -578,6 +578,13 @@ class BaseDatabaseOperations(object):
     def combine_duration_expression(self, connector, sub_expressions):
         return self.combine_expression(connector, sub_expressions)
 
+    def binary_placeholder_sql(self, value):
+        """
+        Some backends require special syntax to insert binary content (MySQL
+        for example uses '_binary %s').
+        """
+        return '%s'
+
     def modify_insert_params(self, placeholder, params):
         """Allow modification of insert parameters. Needed for Oracle Spatial
         backend due to #10888.
diff --git a/django/db/backends/mysql/operations.py b/django/db/backends/mysql/operations.py
index 8a0fe80583..963ad42f10 100644
--- a/django/db/backends/mysql/operations.py
+++ b/django/db/backends/mysql/operations.py
@@ -212,6 +212,9 @@ class DatabaseOperations(BaseDatabaseOperations):
             value = uuid.UUID(value)
         return value
 
+    def binary_placeholder_sql(self, value):
+        return '_binary %s' if value is not None else '%s'
+
     def subtract_temporals(self, internal_type, lhs, rhs):
         lhs_sql, lhs_params = lhs
         rhs_sql, rhs_params = rhs
diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index de69e5a35f..333afc5ddc 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -2371,6 +2371,9 @@ class BinaryField(Field):
     def get_internal_type(self):
         return "BinaryField"
 
+    def get_placeholder(self, value, compiler, connection):
+        return connection.ops.binary_placeholder_sql(value)
+
     def get_default(self):
         if self.has_default() and not callable(self.default):
             return self.default