Ruby-on-rails 参数缺失或值为空：用户 rails 4
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param is missing or the value is empty: user rails 4
提问by theJava
I am getting the following error, when i try to submit my registration form. param is missing or the value is empty: user
当我尝试提交注册表时，出现以下错误。参数缺失或值为空：用户
def user_params
params.require(:user).permit(:name, :email, :password, :password_confirmation)
end
Below is the request:
下面是请求：
{"utf8"=>"?",
"authenticity_token"=>"YX0+4AeWlGWJiQZgbhV9cxi6TUCoibZfwh95BrK9iCQ=",
"name"=>"asasa",
"email"=>"[email protected]",
"password"=>"[FILTERED]",
"confirm_password"=>"[FILTERED]",
"commit"=>"Register"}
Below is my view
下面是我的看法
<%= form_tag users_path, class: "form-horizontal", id: "signupform" do %>
<%= end %>
回答by Max Williams
there is no params[:user]there, that's what the error is telling you. Are you perhaps expecting your params to look like this?
没有params[:user]，这就是错误告诉你的。您是否希望您的参数看起来像这样？
{"utf8"=>"?",
"authenticity_token"=>"YX0+4AeWlGWJiQZgbhV9cxi6TUCoibZfwh95BrK9iCQ=",
"user" => {"name"=>"asasa",
"email"=>"[email protected]",
"password"=>"[FILTERED]",
"confirm_password"=>"[FILTERED]"
},"commit"=>"Register"}
(i've added some indentation to highlight the structure).
（我添加了一些缩进来突出结构）。
If so, then you need to amend the form that submitted these params. Either use form_for @user, which will automatically set the input tags' nameattributes to user[name], user[email]etc, or manually set the field's names yourself, to user[name]etc.
如果是这样，那么您需要修改提交这些参数的表单。无论是使用 form_for @user，它会自动设置输入标签的name属性user[name]，user[email]等等，或者手动设置字段的名称自己，user[name]等等。
