ajax 从 Rails 应用程序发布到外部数据库

Question

I am trying to insert data from a form built with Ruby on Rails to my SQL Server database. I have connected my database correctly and can pull data from it. I am now trying to post back to it. I am needing help with figuring out how to get the data from the form into the correct columns in my table in the database.

My ajax:

  <script>
$('#Favorites').on('submit',function(event){
    var $form = $(this),
    data = $form.serialize();
    var url = 'http://localhost:3000/welcome/insert';
    $.ajax({
        type: 'POST',
        url: url,
        data: data,
        success: function(){
            
            alert('Your form has been successfully submitted!');
            document.getElementById('Favorites').reset();
            window.location.reload();
        },
        fail:function(){
            alert('something went wrong...try again');
        }
    });
 return false;
 });

</script>

My controller function:

def insert
    @ipinsert=Ipdw.connection.execute("insert into [DB_Test02].[dbo].[My_Table] (Report_Name,Report_Link)
  values ('I am cool','www.google.com')")
  end

Currently I just have a dummy insert statement here to make sure that I can insert into the tables and I can. I just need to know how to break out the form values sent to the controller and how to tell Rails what table and columns to put those values into.

Answer 1

Rails will format the data for you . In controller like this:

{'Report_Name': 'some name', 'Report_link': 'www.example.com'}

and will be accessible via the params .

Your job is now to format the data correctly for the manual execution of the SQL query.

insert_values = "('%s', '%s')" % params['Report_Name'], params['Report_link']
@ipinsert=Ipdw.connection.execute("insert into [DB_Test02].[dbo].[My_Table] (Report_Name,Report_Link) values #{insert_values}")

Answer 2

For the problem of which table to add to your DB server you could specify this in hidden fields in your form and every fieled should have a name, When you say $form.serialize(); it turns it to something like FirstName=Amr&SecondName=Adel and so on where FirstName is the name of the field and Amr is the value of the field, Then you put this serialization into a form of JSON format like {"data": $form.serialize()} and add dataType: "JSON" to your post request, In your Insert function you can get it through params[:data] and split it with & to be something like ['FirstName=Amr','SecondName=Adel'] and every element split it with = so you can get something like this [['FirstName','Amr'], ['SecondName','Adel']] .

Hope this helps.