Ruby on rails carrierwave没有';不保存文件也不更新模型
嗨,我在rails api中使用carrierwave上传用户头像。。。在我的控制器中,我有一个方法update_avatar,它用给定的文件更新user.avatar_uri 我查阅了carrierwave的文档并遵循了每一步,但它不起作用。它不保存文件,也不保存模型本身 这是控制器用户\u controller.rbRuby on rails carrierwave没有';不保存文件也不更新模型,ruby-on-rails,file,controller,carrierwave,uploader,Ruby On Rails,File,Controller,Carrierwave,Uploader,嗨,我在rails api中使用carrierwave上传用户头像。。。在我的控制器中,我有一个方法update_avatar,它用给定的文件更新user.avatar_uri 我查阅了carrierwave的文档并遵循了每一步,但它不起作用。它不保存文件,也不保存模型本身 这是控制器用户\u controller.rb def update_avatar parameters = Hash.new user = User.find_by(id: params[:user
def update_avatar
parameters = Hash.new
user = User.find_by(id: params[:user_id])
if user
#p("----user.avatar_uri.url before user.avatar_uri = params[:avatar] : "+user.avatar_uri.url)
user.is_used_fb_avatar=false
p("----user.avatar_uri.url before update: "+ user.avatar_uri.url)
User.update(params[:user_id], :avatar_uri => params[:avatar])
p("----user.avatar_uri.url after update: "+user.avatar_uri.url)
if user.avatar_uri
parameters["success"]=true
parameters["avatar_uri"]=user.avatar_uri.url
else
parameters["success"]=false
parameters["error"]="Couldn't update user check the file used"
end
else
parameters["success"]=false
parameters["error"]="Couldn't find user"
end
render :json => parameters.to_json
end
这是model user.rb
class User < ApplicationRecord
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
mount_uploader :avatar_uri, AvatarUploader
attr_accessor :login
has_one :role, dependent: :destroy
has_many :posts, dependent: :destroy
has_many :likes, dependent: :destroy
has_many :shares, dependent: :destroy
has_many :comments, dependent: :destroy
has_many :messages
has_many :notifications, dependent: :destroy
has_many :follows, class_name: "Follow", foreign_key: "follower_id", dependent: :destroy
has_many :tokens
has_and_belongs_to_many :conversations
...
end
试试这个:
def filename
"avatar-#{secure_token}.jpg" if original_filename.present?
end
protected
def secure_token
var = :"@#{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)
end
我总是初始化该字段,因此不确定这是否是问题所在,请尝试这样做
user.avatar\u uri=AvatarUploader.new user.avatar\u uri=params[:avatar]user.save
然后在上传程序上,def filename,将SecureRandom.urlsafe\u base64(16).放到+File.extname(原始文件名)。如果原始文件名在print语句之后,放到\s?它实际上工作了,但没有预期的效果:它保存了文件,但用另一个名称更新了user.avatar\u uri。。。下面是日志中的几行:SQL(84.0ms)UPDATE“users”设置“avatar_uri”=$1,“updated_在”=$2,其中“users”。“id”=$3[[“avatar_uri”,“NghyuZZ6vvdtiWFQrO6m4w.jpg”],[“updated_at”,2017-06-30 20:22:22 UTC],“id”,47]]
-->已被使用\u fb\u头像未被调用--
文件名=>mcXKz1hV6vfkMid23l4ixw.jpg
(21.7ms)提交“----更新后的user.avatar\u uri.url:/user/image/8tmtcbhppibafelwiito07q.jpg”
SecureRandom.urlsafe\u base64(16).到文件名+文件名(原始文件名)。如果原始文件名放入(“——————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————,它应该返回名称而不是puts语句?因此,如果您将第一个securerandom…分配给一个变量,然后放入该变量,最后返回该变量->>如果原始文件名尝试了它…仍然相同..我甚至尝试完全删除puts:def filename if model.is_used_fb_avatar original_filename#puts(“-----------是否使用了\u fb\u头像被称为--”)否则新的\u文件\u名称=SecureRandom.urlsafe\u base64(16).到\u s+文件.extname(原始\u文件名).到\u新的\u文件\u名称如果原始的\u文件名结束
问题是由于某种原因,它在更新后另一次被调用:SQL(0.8ms)更新“用户”集阿凡达uri“=$1”,更新时间“=$2,其中“用户”。“id”=$3[[“阿凡达uri”、“\u7ad618in4cyi-IBTtznbg.jpg”],[“更新时间”,2017-06-30 21:04:57 UTC],“id”,47]------正在使用中\uFB阿凡达未被调用----filename=>twmswb8namlymwfdwzqdw.jpg(37.5ms)提交”------更新后的user.avatar\wbu.url:/user/image/twmwwzwwwqdwwwwqdw.url“在940毫秒内完成200 OK(视图:78.7毫秒|活动记录:550.1毫秒)
这就是为什么它与保存的文件不同的原因name@AhmedFnayou我添加了一个我的工作上传器的样本,你能试试吗?也许它只是原始的文件名.present?那不见了?是的。。。你的代码运行得很好。。。最后我只试过了。礼物?一开始,但没用。。所以我只是添加了你的secure_token方法,并像你一样使用它。。。成功了!!谢谢你,先生:)
Started PUT "/api/update-user-avatar.json" for 127.0.0.1 at 2017-06-30 21:10:43 +0200
Processing by Api::UsersController#update_avatar as JSON
Parameters: {"user_id"=>"47", "avatar"=>#<ActionDispatch::Http::UploadedFile:0x007f852d2c54e8 @tempfile=#<Tempfile:/var/folders/k7/2bnc1fxs1r164gf831dn5l140000gn/T/RackMultipart20170630-1261-1viplk8.jpg>, @original_filename="batman.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"avatar\"; filename=\"batman.jpg\"\r\nContent-Type: image/jpeg\r\n">}
User Load (0.7ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 47], ["LIMIT", 1]]
"----user.avatar_uri.url before update: /user/image/wlOHg5N0K5aq5hJGFlM6XA.png"
CACHE (0.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2 [["id", 47], ["LIMIT", 1]]
(0.3ms) BEGIN
User Exists (0.5ms) SELECT 1 AS one FROM "users" WHERE "users"."username" = $1 AND ("users"."id" != $2) LIMIT $3 [["username", "John"], ["id", 47], ["LIMIT", 1]]
--------- is_used_fb_avatar is not called ----
filename => jDZ48CtHI5a9L0qGcKdEWQ.jpg
SQL (37.7ms) UPDATE "users" SET "updated_at" = $1, "avatar_uri" = $2 WHERE "users"."id" = $3 [["updated_at", 2017-06-30 19:10:45 UTC], ["avatar_uri", "wlOHg5N0K5aq5hJGFlM6XA.png"], ["id", 47]]
--------- is_used_fb_avatar is not called ----
filename => njeFYobP6erVu9uYunmFhw.jpg
(134.3ms) COMMIT
"----user.avatar_uri.url after update: /user/image/wlOHg5N0K5aq5hJGFlM6XA.png"
Completed 200 OK in 683ms (Views: 136.7ms | ActiveRecord: 222.4ms)
def filename
if model.is_used_fb_avatar
original_filename
#puts ("--------- is_used_fb_avatar is called ----")
else
"avatar-#{secure_token}.jpg" if original_filename.present?
end
end
protected
def secure_token
var = :"@#{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)
end
def filename
"avatar-#{secure_token}.jpg" if original_filename.present?
end
protected
def secure_token
var = :"@#{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)
end