如何使用Paperclip立即显示上传图像的缩略图?
Soinmyapp,userscanuploadanimagetotheirblog.NowrightwhentheychoosethefileI'dliketoinstantlyshowathumbnailoftheuploadedimagesotheyknowwhichimagethey'ves...
为什么我要在安装PaperClip时获得“has_attached_file”的未定义方法?
IjustinstalledthepluginforPaperclipandIamgettingthefollowingerrormessagebutIamnotsurewhy:我刚刚为Paperclip安装了插件,我收到如下错误信息,但我不知道为什么:NoMethodError(undefined...
如何使用imagemagick和paperclip将缩放阴影应用于缩略图?
Iwouldliketoaltertheprocessingofthumbnailsinpaperclipbyhavingimagemagickapplyadropshadowtoallthethumbnails.WhatI'mstuckonistheactualimagemagickcommand...
使用Paperclip从图片中获取GPS元数据
IhaveaquestionaboutPaperclip.ManymoderncamerasandphonesaddGPSmetadatatoaphotowhentaken:我有一个关于Paperclip的问题。拍摄时,许多现代相机和手机都会为照片添加GPS元数据:UsersofmyRailsapp...
Paperclip按用户重命名上传的文件
Isitpossibletoallowtheusertorenametheuploadedfile?是否允许用户重命名上传的文件?Ifthereisasharelink,willitbeautomaticallyupdated.Iamnotabletodothissinceicantfirstfig...