Add Project name validation

app/models/project.rb

@@ -64,7 +64,9 @@ class Project < ActiveRecord::Base
   # Validations
   validates :owner, presence: true
   validates :description, length: { within: 0..2000 }
-  validates :name, presence: true, length: { within: 0..255 }
+  validates :name, presence: true, length: { within: 0..255 },
+            format: { with: Gitlab::Regex.project_name_regex,
+                      message: "only letters, digits & '_' '-' '.' allowed. Letter should be first" }
   validates :path, presence: true, length: { within: 0..255 },
             format: { with: Gitlab::Regex.path_regex,
                       message: "only letters, digits & '_' '-' '.' allowed. Letter should be first" }

lib/gitlab/regex.rb

@@ -6,6 +6,10 @@ module Gitlab
       default_regex
     end
 
+    def project_name_regex
+      default_regex
+    end
+
     def path_regex
       default_regex
     end