i am new in ruby.
so i have html code which includes one input field and button and i want when user click on that
button i have to run one ruby file which has system() method.
index.html
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<form method="post" action="/runMethod">
<input type="text" name="name" value="whatever">
<input class='btn btn-primary' type='submit' value='click'>
</form>
</body>
app.rb
system("wayback_machine_downloader userInput")
this is my two files code. i just want that if i click on button app.rb file should run with given input. is it possible?
Technically, you can by writing JS code which executes the ruby file as a script by first using shell, and given the computer has ruby installed you can simply run something like this:
var w = new ActiveXObject("WScript.Shell");
w.run('ruby Scripts\\test.rb');
This is however not a good way to do it as you don't get any response or error messages from the executed file, it might cause some security issues and you're executing business logic in the frontend, which is always bad.
The correct way to do it is to make the ajax call to a endpoint, where you can control the access to the information, set business logic in the backend and give proper response. I'm not sure if you're using rails, but if you're you should just create a new path in routes.rb and create a controller method for it.
Related
The explanation below is big, but the question is really simple.
I'm doing a simple form project in https://www.theodinproject.com/paths/full-stack-ruby-on-rails/courses/ruby-on-rails/lessons/forms.
The first part where I am, I need to build a form manually - so that I can see how Rails does a lot for me when I use its helper methods.
I'm stuck in this point:
Specify the method and the action attributes in your tag (use $ rails routes to see which HTTP method and path are being expected based on the resource you created).
The routes.rb file looks like this:
resources :users, only: [:create, :new]
I don't know how to determine which method should I use for the form - post or get.
I don't know how to determine which action path I should use.
I've gone into the internet, Rails guides and etc, and have solved the other topics so far, but for this one I can't get through it.
My form so far:
<form action='/create' method="post" accept-charset="UTF-8">
<label for="username"></label>
<input type="text" id="username" name="username"><br>
<label for="email"></label>
<input type="text" id="email" name="email"><br>
<label for="password"></label>
<input type="text" id="password" name="password"><br>
<input type="submit" id="submit" value="Submit" >
</form>
Once I run it in the server and then submit the form - which I did - I should get:
"Submit your form and view the server output. Oops, we don’t have the right CSRF authenticity token (ActionController::InvalidAuthenticityToken) to protect against cross site scripting attacks and form hijacking. If you do not get an error, you used the wrong method from step 1."
Yes, Rails is smart) When u are sending the request to your server, Rails must know from where this request is coming. In short, if your form sending the CSRF token then Rails understand that u send this request, otherwise someone else on your behalf (CSRF attack).
To fix this bug u need to set <%= form_authenticity_token %> in your .erb view. It will generate this input that is below
<input type="hidden" name="authenticity_token" value="your_token_generate_by_rails">
Or for your testing purposes, u can use this in your controller which is processing your request. But never use it in future if you are don't know what are u doing)
skip_before_action :verify_authenticity_token
Hi there fellow Odin student!
It looks like you're doing this lesson. Me too!
It sounds like you're asking about what value to use with action attribute in the form.
When I created a form using the Rails formHelper methods, I inspected the HTML that Rails created when I was previewing the app/website (rails s). By opening up the Developer tools (F12 key, or right click the mouse and choose inspect)I was able to see that the form Rails created had an action equal to the name of the resource, with a forward slash in front of it.
So for your example, the resource created is "users". So the action attribute would be /users
to be complete, the solution would be something like: <form action="/users"...
Hope this helps!
Please note I'm not interested in a Polymer-, Angular- or route-based solution here. I'm trying to learn "pure" Dart here, and while I'll likely switch to using one of those frameworks down the road, I need to have a good understanding of the fundamentals first.
In Dart, is it possible to download a whole bunch of HTML "snippets" (see below) all at once (at app startup), and then load them into the browser (either the entire window or just inside a particular <div> element, etc.) dynamically?
For instance, my HTML file might have a <div> element:
<body>
<!-- lots of HTML -->
<div id="container"></div>
<!-- more HTML -->
</body>
And I would like to download two "snippets" (DOM subtrees, HTML templates) of HTML, and dynamically load either one of them into the container div tag. Perhaps one of the snippets looks like this:
<h1>I'm Snippet #1!!!</h1>
<input type="button" name="redPillButton" value="Red Pill!" />
And another snippet my look like:
<h1>I'm Snippet #2!!!</h1>
<input type="button" name="bluePillButton" value="Blue Pill!" />
Can the two snippets be inside their own HTML file, or do I have to put them inside one big file and extract out the "snippet" that I want to load? Either way, how do I accomplish this in a Dart web app?
You can keep each parts in their own file and load them like that :
HttpRequest.getString("part.html").then((html) {
querySelector('#container').innerHtml = html;
});
I have the following mark up in an ASP.NET MVC view (this is a Twitter Bootstrap search box):
<form action="#Url.Action("Results", "Search")" method="post">
<input type="text" class="search-query" id="SearchTerm" name="SearchTerm" />
</form>
This code works as expected, but using a post here is causing problems.
How can I change this markup to pass the search query as a URL argument instead? I'm not really sure how to even approach this short of keeping the existing markup and then redirecting from the controller. I'm thinking there must be a more efficient way than that.
You should be able to change method="post" to method="get" and get the desired result. The form, with a get method setting, pushes the fields in the form to the querystring by its default behavior.
As a workaround, if the default behavior doesn't suit you, you could catch the submit event of the form, and do:
window.location = form.action + "?SearchTerm=" + document.getElementById("SearchTerm").value
Something like that, where form is a reference to the form element. You can build the link and redirect using javascript, which is a get request.
I've created a pseudo user control for a site written in classic asp. The control is simply an asp page (with full HTML headers and body) that resides within an iframe in the parent page. The point was to create an AJAX-like interface for uploading files asynchronously (the parent page contains a large form and I didn't want to have to upload the files and submit the rest of the form at the same time).
The problem is, I'm running into a lot of issues with relative urls being used in the iframe page/user control. Depending on what page the iframe is a child of, the relative url base location seems to change according to the directory that particular page is in.
Example:
www.website.com/directory1/application1.asp
...
<form>
<input>
...
<iframe src="../controls/FileUpload.asp"/>
...
</form>
...
www.website.com/directory1/directory2/application2.asp
...
<form>
<input>
...
<iframe src="../../controls/FileUpload.asp"/>
...
</form>
...
www.website.com/controls/FileUpload.asp
...
<form method="post" enctype="multipart/form-data" action="FileUpload.asp"><!--problem here-->
<input type="file">
<input type="submit"/>
</form>
The iframe src paths work correctly (notice the one that's buried a directory deeper has an extra double dot). But in the code for the FileUpload.asp page, relative URLs don't work consistently. The URL I have in the action attribute for the form tag works if you simply load the page as-is, not in an iframe of another page. You can change it to "../controls/FileUpload.asp" and it will work on the first application page, but you have to add another "../" for it to work on the second application page.
I was wondering if maybe there's a way with vbscript to find the absolute URL to a certain file. I do use an include file into which I could hard-code this, but I'd rather not if that's possible. Any other ideas?
You could also just put in an absolute path from the root such as
action="/controls/FileUpload.asp"
I'm not sure if you are perhaps looking for
<%
Response.Write Server.MapPath("./foo.txt")
%>
Some usefull code from Thorarin
that I just saw in a different post
Look for ThisPage() Function
I would like to make my application somewhat REST compliant. I am using Rails on the backend and GWT on the frontend. I would like to do updates and deletes. I realize I can do something like mydomain.com/:id/delete (GET) and accomplish the same thing. However, as I stated previously, I would like to have a REST compliant backend. Thus, I want to do mydomain.com/:id (DELETE) and have it implicitly call my delete method.
Now, it's my understanding that if a browser (my browser is GWT RequestBuilder) doesn't support DELETE/GET, Rails somehow accomplishes this task with a POST and some other url parameter. So, how can I accomplish this with a GWT RequestBuilder?
Rails does this with hidden attributes. The easiest way to figure this out would be to create a new rails application, generate a scaffold and have a look at the HTML in a browser.
Try this:
rails jp
cd jp
./script/generate scaffold RequestBuilder name:string
rake db:migrate
./script/server
Then navigate to http://localhost:3000/request_builders, click on New and have a look at the HTML. You'll see something like:
<form action="/request_builders" class="new_request_builder"
id="new_request_builder" method="post">
<div style="margin:0;padding:0">
<input name="authenticity_token" type="hidden" value="e76..." />
</div>
This is a creation, method is POST. Enter a name, save then Edit:
<form action="/request_builders/1" class="edit_request_builder"
id="edit_request_builder_1" method="post">
<div style="margin:0;padding:0">
<input name="_method" type="hidden" value="put" />
<input name="authenticity_token" type="hidden" value="e76..." />
</div>
Of course the form is sent with POST, but Rails hads a hidden field to simulate a PUT request. Same for deletion, but the scaffold will do it with a bit of Javascript:
var m = document.createElement('input');
m.setAttribute('type', 'hidden');
m.setAttribute('name', '_method');
m.setAttribute('value', 'delete');
To have this work with another front-end, you'll have to both:
Use the same style URL such as /request_builders/1 (RESTful URLs)
Include the hidden fields (Rails trick)
Like #skrat said, the _method=PUT workaround doesn't work for any kind of body where Content-Type is not x-www-form-urlencoded, e.g. XML or JSON. Luckily, there is a header workaround as well:
https://zcox.wordpress.com/2009/06/17/override-the-http-request-method-in-jersey/
So to update a REST resource, just do a POST to its address and add the header X-HTTP-Method-Override: PUT. Rails will interpret this as a PUT to the address.