Call Ruby Function on Input (Simple Forms) -


i have field in simple form looks this

.row   - if f.object.avatar.present?     .field       = image_tag f.object.avatar.url   = f.input :avatar, label: f.object.avatar.present? ? 'replace avatar' : 'avatar'

and ruby function want call when input changed (when image uploaded)

def update   # things end

my understanding can use onchange: result want crash application when try. correct way this?


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