Raises length of issue description and journals for MySQL (#20127).

git-svn-id: http://svn.redmine.org/redmine/trunk@15905 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/20161010081301_change_issues_description_limit.rb

@@ -0,0 +1,12 @@
+class ChangeIssuesDescriptionLimit < ActiveRecord::Migration
+  def up
+    if ActiveRecord::Base.connection.adapter_name =~ /mysql/i
+      max_size = 16.megabytes
+      change_column :issues, :description, :text, :limit => max_size
+    end
+  end
+
+  def down
+    # no-op
+  end
+end

db/migrate/20161010081528_change_journal_details_value_limit.rb

@@ -0,0 +1,13 @@
+class ChangeJournalDetailsValueLimit < ActiveRecord::Migration
+  def up
+    if ActiveRecord::Base.connection.adapter_name =~ /mysql/i
+      max_size = 16.megabytes
+      change_column :journal_details, :value, :text, :limit => max_size
+      change_column :journal_details, :old_value, :text, :limit => max_size
+    end
+  end
+
+  def down
+    # no-op
+  end
+end

db/migrate/20161010081600_change_journals_notes_limit.rb

@@ -0,0 +1,12 @@
+class ChangeJournalsNotesLimit < ActiveRecord::Migration
+  def up
+    if ActiveRecord::Base.connection.adapter_name =~ /mysql/i
+      max_size = 16.megabytes
+      change_column :journals, :notes, :text, :limit => max_size
+    end
+  end
+
+  def down
+    # no-op
+  end
+end