double-submit-prevention

I am just inserting data in codeigniter controller part at pastebin http://pastebin.com/KBtqrAkZ public function add_product() { $this->lang->load('log_in', 'english'); log_in_check($this->lang->line('log_in_authentication_error'), 'admin/log_in'); $this->lang->load('common', 'english'); $data['title'] = $this->lang->line('admin_index_title'); $this->load->view('admin_template/header', $data); $this->load->view('admin_template/left_menu'); $data['error_msg'] = ''; if ($this->form_validation->run('add_product') === TRUE) { $this->admin_model->add_product($this->input->post()); $this->session-

I would like to see how Web Developers avoid the double submission problem. So basically my understanding of the problem is as follows: Double submission occurs when an impatient user submits a form multiple times, causing issues. This problem can be fixed by JavaScript (specifically jQuery scripts) that disable the submit button once the form has been submitted - a weakness of this is if clients have JavaScript disabled. There is also server side methods of detection. So my questions are: How do people overcome double submission? What is a real life example of a problem caused by double

I am doing web development. I have a page to do with credit card, which when user click "refresh" or "Back", the transaction will be performed one more time, which is unwanted. This include Browser top left "Back" & "Refresh" button, "right click->Refresh/Back", press "F5" key. This is to be done on certain cgi page only, not all of them. Can this be done using Javascript? Or any other method? vartec The standard way is to do it in 3 steps. the form page submits fields to processing page processing page processes data and redirects to result page result page just displays results, reloading it

I'm working on an ASP.NET 4.0 Web Forms project, after a break of about 5 years, and I'm confused about the submit behaviour. In the click event of a button, I sleep the thread so that I can click the submit button multiple times. From what I can tell, ASP.NET is preventing the click event being called more than once. Is this true? BTW: I've turned off javascript for this test. Aristos " ASP.NET is preventing the click event being called more than once. Is this true? " No , actually what is happening to you is that your events are blocked by the lock of the session . ( What session is on asp

We're using JSF 2.0 on WebSphere v8.5 with several component libraries PrimeFaces 4.0, Tomahawk 2.0, RichFaces, etc. I am looking for generic mechanism to avoid form re-submission when the page is refreshed, or when the submit button is clicked once again. I have many applications with different scenarios. For now I have considered disabling the button with a piece of JavaScript in onclick attribute, but this is not satisfying. I'm looking for a pure Java implementation for this purpose, something like the Struts2 <s:token> . BalusC I am looking for generic mechanism to avoid form re