Redmine

Now content_type field has 30 symbols limit. In case of using Attachment for custom models this limitation is very uncomfortable. For example, if I have a model into module, then full name of model always will be greater then 30 symbols. Moreover for this type of models Attachment will be saved without warnings or errors. But cuntent_type will be cuted and record become invalid.

Same thing can happens with disk_filename, which has 255 limit. But in this case situation can by fixed by moving of Redmine directory closer to root of file system.