rails params [：user_id]即使存在也返回nil

Question

When i submit the form and rails console shows parameter passing as

Processing by RfpsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"OeKck54onJ6o72ABYvB6jMyBnU5X7BHY6NKH1sUtcHU=", "***rfp"=>{"user_id"=>"64***", "client_id"=>"3", "cms"=>"other2", "othercms"=>"dasda", "otherecommerce"=>"", "numberofpage"=>"", "designcomplexity"=>"", "browser"=>"","commit"=>"Create Rfp", "project_id"=>"18"}

in the controller when i check if params[:user_id].present? it always shows nil even though user_id is 64 as shown above plz help me why does it happen

EDITS

Started GET "/projects/18/rfps/157" for 127.0.0.1 at 2014-04-23 10:16:24 +0530
Processing by RfpsController#show as HTML
  Parameters: {"project_id"=>"18", "id"=>"157"}
  Current user: anonymous
Completed 500 Internal Server Error in 7ms

NoMethodError (undefined method `[]' for nil:NilClass):



def show
 @project = Project.find(params[:project_id])
@rfp = Rfp.find(params[:id])
    # r  = Rfp.find(params[:user_id])

    # m  = Rfp.find(params[:user_id])

    if params[:rfp][:user_id].present?
        @coo = User.where(:id => params[:rfp][:user_id]).first

    end
 end

in view i am jst printing name

  Coordinator<%= @coo.firstname %>

Answer 1

这样做，这里:user_id在:rfp

if params[:rfp][:user_id].present?

Answer 2

Try this

if params['***rfp'][:user_id].present?
    @coo = User.where(id: params['***rfp'][:user_id]).first
end

Answer 3

because params[:user_id] is not present.

params[:rfp][:user_id] is 64, however.

Answer 4

You have your user_id in rfp ,by doing just params[:user_id] is not sufficient to get the value here.so it returns nil .

you have to do

params[:rfp][:user_id] #=> 64

to get the value of user_id .

So now by doing if params[:rfp]{:user_id].present? #=> true if params[:rfp]{:user_id].present? #=> true

will return true