why when i'm upload image using carrierwave in rails 4 database is rollback?

Question

i try to save image file using carrierwave in rails 4, but when submit button is click database is rollback??? why ? if i dont select image to upload and just send string only, all work properly but if i send image file i get error like this : ``` TypeError: can't cast ActionDispatch::Http::UploadedFile to string: INSERT INTO "items" ("created_at", "description", "image", "name", "store_id", "sub_items", "title", "updated_at") VALUES (?, ?, ?, ?, ?, ?, ?, ?) (0.2ms) rollback transaction *** ActiveRecord::StatementInvalid Exception: TypeError: can't cast ActionDispatch::Http::UploadedFile to string: INSERT INTO "items" ("created_at", "description", "image", "name", "store_id", "sub_items", "title", "updated_at") VALUES (?, ?, ?, ?, ?, ?, ?, ?) ``` my view : ``` <%= form_for @items, :url => dashboard_create_items_path(@store.id), :html => {:multipart => true} do |f| %> <%= f.label :name, 'Name' %> <%= f.text_field :name %>
<%= f.label :title, 'Title' %> <%= f.text_field :title %><…

Accepted Answer

You may be seeing this error message because Carrierwave hasn't been initialized in your model.

The carrierwave method `mount_uploader` needs to be added to the image field in the model like this:

```
class Item < ActiveRecord::Base
  mount_uploader :image, ImageUploader
end
```

(see the docs for more details)

why when i'm upload image using carrierwave in rails 4 database is rollback?

Solution

Problem