From 7184d932ba099072807fd74c8ff3a8c2fe4949f0 Mon Sep 17 00:00:00 2001
From: Mark Bates <mark@markbates.com>
Date: Mon, 18 Dec 2017 12:49:48 -0500
Subject: [PATCH] added a FileTag and made sure the form automatically flips to
 multipart

---
 form/file_tag.go       | 13 +++++++++++++
 form/input_tag.go      |  3 +++
 form/input_tag_test.go |  8 ++++++++
 3 files changed, 24 insertions(+)
 create mode 100644 form/file_tag.go

diff --git a/form/file_tag.go b/form/file_tag.go
new file mode 100644
index 0000000..01ebd08
--- /dev/null
+++ b/form/file_tag.go
@@ -0,0 +1,13 @@
+package form
+
+import "github.com/gobuffalo/tags"
+
+func (f Form) FileTag(opts tags.Options) *tags.Tag {
+	if opts["type"] == nil {
+		opts["type"] = "file"
+	}
+	if opts["type"] == "file" {
+		f.Options["enctype"] = "multipart/form-data"
+	}
+	return f.InputTag(opts)
+}
diff --git a/form/input_tag.go b/form/input_tag.go
index 5bc0382..b8067e8 100644
--- a/form/input_tag.go
+++ b/form/input_tag.go
@@ -6,6 +6,9 @@ func (f Form) InputTag(opts tags.Options) *tags.Tag {
 	if opts["type"] == nil {
 		opts["type"] = "text"
 	}
+	if opts["type"] == "file" {
+		f.Options["enctype"] = "multipart/form-data"
+	}
 	return tags.New("input", opts)
 }
 
diff --git a/form/input_tag_test.go b/form/input_tag_test.go
index f6a9443..f274935 100644
--- a/form/input_tag_test.go
+++ b/form/input_tag_test.go
@@ -28,3 +28,11 @@ func Test_Form_DateTimeTag(t *testing.T) {
 	})
 	r.Equal(`<input type="datetime-local" value="1976-08-24T06:17" />`, i.String())
 }
+
+func Test_Form_InputTag_File(t *testing.T) {
+	r := require.New(t)
+	f := form.New(tags.Options{})
+	i := f.InputTag(tags.Options{"type": "file"})
+	r.Equal(`<input type="file" />`, i.String())
+	r.Equal(f.Options["enctype"], "multipart/form-data")
+}