[英]how to pass value of a variable from javascript to rails
I am pretty new to rails, please help me out.我对 Rails 很陌生,请帮帮我。
This is my javascript i want filename
value to be passed in the controller page_controller
to the create_table
action这是我的 javascript 我希望
filename
值在控制器page_controller
传递给create_table
操作
$(document).ready(function(){
$("#prefix, #client, #myFile").change(function(){
concatenated_string = $("#prefix").val() + "_" + $("#client").val() + "_" + $("#myFile").val();
$("#concatenated_string").val(concatenated_string);
myvar = concatenated_string.replace(/C:\\fakepath\\/i, '');
myvar = myvar.replace(/\..+$/, '');
myvar = myvar.replace(/\s+/, "_");
var filename = myvar //This variable
$("#temp_display").text(filename)
})
})
This below file is my page_controller.rb
and the create_table
action下面的文件是我的
page_controller.rb
和create_table
操作
class PageController < ApplicationController
# before_action :authenticate_user!
#before_action :set_company, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!, only: [:index]
def home
end
def titlebar
end
def insert_table
#redirect_to :action => "create_table"
end
def create_table
filename = params[:filename]
end
end
This is what am getting in terminal这就是我在终端中得到的
Started POST "/page/create_table" for ::1 at 2017-01-28 20:45:05 +0530
Processing by PageController#create_table as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"TAcnZfhr8Amg8/xupgJVlAosz+/hNPgFgxVT4cg5x+OKvRwvrtm6Z5momvQiHsYBcl1tZWUu525Z1VTxqWIu8Q==", "commit"=>"upload file"}
Rendering page/create_table.html.erb within layouts/application
Rendered page/create_table.html.erb within layouts/application (0.5ms)
Completed 200 OK in 190ms (Views: 186.7ms | ActiveRecord: 0.0ms)
You can have a hidden input field in the form like below for which the filename value can be appended, so that you can capture the value in the create_table
action.您可以使用如下形式的隐藏输入字段,可以为其附加文件名值,以便您可以在
create_table
操作中捕获该值。
#in your form
<input type="hidden" name="filename" id="my_file_name" value="">
And in script并在脚本中
$(document).ready(function(){
$("#prefix, #client, #myFile").change(function(){
concatenated_string = $("#prefix").val() + "_" + $("#client").val() + "_" + $("#myFile").val();
$("#concatenated_string").val(concatenated_string);
myvar = concatenated_string.replace(/C:\\fakepath\\/i, '');
myvar = myvar.replace(/\..+$/, '');
myvar = myvar.replace(/\s+/, "_");
var filename = myvar //This variable
$("#temp_display").text(filename);
$("#my_file_name").val() = filename; //Add this line
})
})
Now, you can capture the value of filename with params[:filename]
.现在,您可以使用
params[:filename]
捕获filename的值。
I got the solution .我得到了解决方案。
this is my js这是我的js
function myFunction()
{
concatenated_string = $("#prefix").val() + "_" + $("#client").val() + "_" + $("#myFile").val();
$("#concatenated_string").val(concatenated_string);
myvar = concatenated_string.replace(/C:\\fakepath\\/i, '');
myvar = myvar.replace(/\..+$/, '');
myvar = myvar.replace(/\s+/, "_");
var filename = myvar;
$("#temp_display").text(filename);
document.getElementById("my_file_name").value = filename;
}
this is in my view as suggested by pavan这是我认为 pavan 所建议的
<input type="hidden" name="filename" id="my_file_name" value="">
this is my controller这是我的控制器
def create_table
filename = params[:filename]
content = params[:file].path
end
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