diff --git a/models/models.go b/models/models.go
index ddf784dee..5743f1862 100644
--- a/models/models.go
+++ b/models/models.go
@@ -1,4 +1,5 @@
 // Copyright 2014 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -184,6 +185,18 @@ func parsePostgreSQLHostPort(info string) (string, string) {
 	return host, port
 }
 
+func getPostgreSQLConnectionString(DBHost, DBUser, DBPasswd, DBName, DBParam, DBSSLMode string) (connStr string) {
+	host, port := parsePostgreSQLHostPort(DBHost)
+	if host[0] == '/' { // looks like a unix socket
+		connStr = fmt.Sprintf("postgres://%s:%s@:%s/%s%ssslmode=%s&host=%s",
+			url.PathEscape(DBUser), url.PathEscape(DBPasswd), port, DBName, DBParam, DBSSLMode, host)
+	} else {
+		connStr = fmt.Sprintf("postgres://%s:%s@%s:%s/%s%ssslmode=%s",
+			url.PathEscape(DBUser), url.PathEscape(DBPasswd), host, port, DBName, DBParam, DBSSLMode)
+	}
+	return
+}
+
 func parseMSSQLHostPort(info string) (string, string) {
 	host, port := "127.0.0.1", "1433"
 	if strings.Contains(info, ":") {
@@ -214,14 +227,7 @@ func getEngine() (*xorm.Engine, error) {
 				DbCfg.User, DbCfg.Passwd, DbCfg.Host, DbCfg.Name, Param)
 		}
 	case "postgres":
-		host, port := parsePostgreSQLHostPort(DbCfg.Host)
-		if host[0] == '/' { // looks like a unix socket
-			connStr = fmt.Sprintf("postgres://%s:%s@:%s/%s%ssslmode=%s&host=%s",
-				url.QueryEscape(DbCfg.User), url.QueryEscape(DbCfg.Passwd), port, DbCfg.Name, Param, DbCfg.SSLMode, host)
-		} else {
-			connStr = fmt.Sprintf("postgres://%s:%s@%s:%s/%s%ssslmode=%s",
-				url.QueryEscape(DbCfg.User), url.QueryEscape(DbCfg.Passwd), host, port, DbCfg.Name, Param, DbCfg.SSLMode)
-		}
+		connStr = getPostgreSQLConnectionString(DbCfg.Host, DbCfg.User, DbCfg.Passwd, DbCfg.Name, Param, DbCfg.SSLMode)
 	case "mssql":
 		host, port := parseMSSQLHostPort(DbCfg.Host)
 		connStr = fmt.Sprintf("server=%s; port=%s; database=%s; user id=%s; password=%s;", host, port, DbCfg.Name, DbCfg.User, DbCfg.Passwd)
diff --git a/models/models_test.go b/models/models_test.go
index 649b1e02e..7016fdb4b 100644
--- a/models/models_test.go
+++ b/models/models_test.go
@@ -1,4 +1,5 @@
 // Copyright 2016 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -53,3 +54,42 @@ func Test_parsePostgreSQLHostPort(t *testing.T) {
 		assert.Equal(t, test.Port, port)
 	}
 }
+
+func Test_getPostgreSQLConnectionString(t *testing.T) {
+	tests := []struct {
+		Host    string
+		Port    string
+		User    string
+		Passwd  string
+		Name    string
+		Param   string
+		SSLMode string
+		Output  string
+	}{
+		{
+			Host:    "/tmp/pg.sock",
+			Port:    "4321",
+			User:    "testuser",
+			Passwd:  "space space !#$%^^%^```-=?=",
+			Name:    "gitea",
+			Param:   "",
+			SSLMode: "false",
+			Output:  "postgres://testuser:space%20space%20%21%23$%25%5E%5E%25%5E%60%60%60-=%3F=@:5432/giteasslmode=false&host=/tmp/pg.sock",
+		},
+		{
+			Host:    "localhost",
+			Port:    "1234",
+			User:    "pgsqlusername",
+			Passwd:  "I love Gitea!",
+			Name:    "gitea",
+			Param:   "",
+			SSLMode: "true",
+			Output:  "postgres://pgsqlusername:I%20love%20Gitea%21@localhost:5432/giteasslmode=true",
+		},
+	}
+
+	for _, test := range tests {
+		connStr := getPostgreSQLConnectionString(test.Host, test.User, test.Passwd, test.Name, test.Param, test.SSLMode)
+		assert.Equal(t, test.Output, connStr)
+	}
+}