Setting href on javascript ignores rails root path - javascript

I have a Rails 6 application that doesn't use a regular sql-ish database, I do searches on an LDAP directory, and because of that, I don't use regular models for users, for example.
In one of my pages, I ask the user to input a person ID and then click a "Search" button, and through javascript I grab the id and pass it into the "Search" button href. As you can see here:
example.html.erb
<form class="d-flex">
<input id="input" class="form-control me-2" placeholder="Person's ID"></input>
<a id="search" class="btn btn-outline-success">Search</a>
</form>
example.js
const inputPerson = document.getElementById('input')
const searchPerson = document.getElementById('search')
searchPerson.addEventListener('click', () => {
searchPerson.setAttribute("href", `/people/${inputPerson.value}`);
})
So here comes the problem:
In my machine, running rails s and testing it, it works fine, as it redirects to localhost:3000/people/12345example
But my website runs in an url that looks like this: shared-url.com/myappname
So I expected the href on production would look like shared-url.com/myappname/people/12345example but it's actually coming up as shared-url.com/people/12345example, and of course it fails as this url does not exist at all...
I have config.relative_url_root = '/myappname' in my config/environments/production.rb, is there any other config I should have set for it to work like that? I know I could just change the javascript href, but I believe there's something I'm doing wrong.
Thanks in advance!

Related

How to call function in another page?

I created a link https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0&lCnpj=00110612000137 To fill the input field CNPJ.
This is fine. However, I need to run the function preencheParametros('CNPJ') together above link.
So, I tried something like this https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0&lCnpj=00110612000137&exec=preencheParametros('CNPJ')
And not worked. How handle this?
First Way: Not Worked
GET method
<form method="post" action="https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0" name="nForm" id="nForm">
<div class="CInput" id="CCnpj">
<input type="text" name="lCnpj" id="lCnpj" value="00110612000137">
</div>
</form>
Result: open new tab, like https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0&lCnpj=00110612000137
Second Way: Not Worked
Read GET method in JS
Input values:
<input type="text" name="lCnpj" id="lCnpj" value="00110612000137">
<input type="button" value="Get Input Values" id="retrieveInputValuesButton" />
<script>
var cnpj = document.getElementById("lCnpj");
var element = document.getElementById("retrieveInputValuesButton");
element.onclick = function() {
window.open("https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0" + cnpj.value + "&exec=preencheParametros('CNPJ')");
};
</script>
Result: open new tab, like https://www.sefaz.rs.gov.br/NFE/NFE-CCC.aspx?ErrKey=true&iCodUf=0&lCnpj=00110612000137&exec=preencheParametros('CNPJ')
I'm sorry, but there is no way to pass in executable instructions to a website like that (unless they specifically provide you a way to do so). That would be a huge security risk if anyone could just inject code.
You could however try cooking something up with a Greasemonkey script.
It's called Greasemonkey for Firefox, or Tapermonkey for Chrome

Need help to test html form textbox and go to page if value is the same as a set value

Hello I am trying to make a simple form to test if the the textfield is equal to a variable, variable value example: ( "MyPassword123" ).
Then if it the textfield is the same as the variable than go to html document, example: ( "nextPage.html" ).
however if its NOT equal to variable then go to html document, example: ( "index.html" ).
the reason of the password is to restrict people that don't play on my game server form nextPage.html, it will have just like news feeds and game information on it, Its nothing like an profile or anything I just want to give out a password to only allow people that play on the server to view a page that's all.
I have tried many times to get this to work in javascript and I am sure its achievable for this simple task using if/else statements and validate the name of the text field but I am no good at java nor javascript.
Form Code:
<form name="accessForm">
Password: <input type="text" name="inputCode"/>
<input type="submit" value="Submit"/>
</form>
If someone could post some code of javascript to make this work, you would so awesome.
NOTE:
Not sure if it matters much but I am using HTML5 and CSS3, and for
Hosting I will be using GoogleDrive, so I cant use MySQL, it needs to
be javascript. I have not tested Drive to see if it allows PHP but I
know Javascript works fine.
You need not to use HTML form for it
<script>
function checkIt()
{
if(document.getElementById("inputCode").value=="MyPassword123")
location.href="nextPage.html";
else
location.href="index.html";
}
</script>
Password: <input id="inputCode" type="text"/>
<input type="button" value="Submit" onclick="checkIt()"/>
Like #Wes Foster mentioned, you should do password validation on the backend, but to compare a form input to a variable in vanilla JS you could do this:
var password = "magicWord";
var form = document.getElementById("formName");
form.onsubmit = function(e) {
e.preventDefault();
var data = document.forms.accessForm.inputCode.value;
if (data == password) location.href = "success.html";
else location.href = "fail.html";
};

Yahoo Merchant Store Catalog Tags Insert Dynamically with Javascript, Jquery, or Ajax

I opened up a yahoo store through their Merchant Service. They have a pretty good store catalog that I have used on a business site that I own. I like it so I decided to use the service again on another business I own. I got the site built but have ran into a few issues with calling the Yahoo Catalog Tags. The tags are basically comments. EX: (<!--#ystore_order id=item_id -->). When the site is loaded it is parsed and the page loads the product details in place of this tag/comment.
I can get everything to work except for the action attribute of my form.
I have tried a bunch of things but I cannot seem to get the action set for my form. If I hard code the tag then it works fine but obviously if I did that then I would have to create a page for every single product.
My form:
<div id="list">
<form method="post">
<input id="btnSubmit" type="submit" value="Add To Cart">
</form>
</div>
Trying to add the comment/tag to form action attribute. I've done it this way(below) and also by getting rid of the variable and just paring the url in the jquery attr function.
<script language="javascript">
$.ajaxSetup({cache: false});
$(document).ready(function(){
//Get URL from URL Query String.
var obj = getUrlVars()["Object"];
//Set form action attribute
$('form').attr('action', '<!--#ystore_order id='+ obj +' -->');
});
</script>
I've also tried creating the form dynamically.
<script language="javascript">
$.ajaxSetup({cache: false});
$(document).ready(function(){
//Get URL from URL Query String.
var obj = getUrlVars()["Object"];
var new_form = '<form method="post" action="<!--#ystore_order id='+obj + ' -->">' +
'<input type="submit" value="Add To Cart" id="btnSubmit">' +
'</form>';
$('#list').append(new_form);
});
</script>
I have tried to escape some characters but have had no success there either.
"\<\!--#ystore_order id='+obj + ' --\>"
I know the issue has something to do with the comment syntax but if I can add it manually then I should be able to do it dynamically. I know this is a hard one to test but if anyone thinks they may have a solution I would be happy to set up an ftp account on my site so you can test and I will provide the product ID's for testing. I've fought with this for about 30+ hours.
Yahoo store tags are populated server-side. Adding a store tag on the client side using Javascript won't do anything, because the code that recognizes the store tag and appends the appropriate html will never see the tag you drop in on the client side. There's no client-side solution possible
The best solution here would be to write a server side program to populate a template with the appropriate tag in response to http requests. I'm not super-familiar with the Yahoo store, so I don't know what the best language for this would be, but it would be a very simple program given how straightforward it sounds like your template is. Since this is already embedded in a site you own, I'd just use whatever backend language you are already working in.
Once you have a server side script that executes and returns the html you need, you could use AJAX to populated it with the appropriate product details as needed.

Can i use JS to replace a GET-parameter with a Post in a link?

I'm working with an old ASP WebForms page in which there is a link which opens in a new windo using javascript. This link includes a GET-parameter, like this:
<href="javascript:window.open(http://myurl.com?MyId=123).focus()">
Search for object
</a>
What I would like to do is replace this GET-parameter with a Post-variable in order to avoid the value of MyId being stored in the browser-history. Possibly something like:
<input type="hidden" id="MyId" name="MyId" value="123">
<a href="submitSearchCriteria()">
Search for object
</a>
Note: Since this is a webforms page, the whole contents of the page is within a pair of <form>...</form> tags which post back to the page itself, and I don`t want to mess with these. The page I would like to link to is another page.
My question: Is there some fairly simple, clean and safe way to pass along a Post-variable from within a link like this? I would prefer to do this without including any third-party java script libraries if possible (I want to minimize the necessary changes to an aging system).
Any ideas?
Add your MyId in your form:
<input type="hidden" id="MyId" name="MyId" value="123">
Then your hyperlink:
Search for object
Then use javascript to change your form action:
function submit(){
[Your Form].action = "[Your Action]";
[Your Form].submit();
}
The form submits but as the page refreshes, the form action goes back to what it was before. But this could depend to where you point back your new action. You could add something to handle the response. This is the easiest solution if you ask me. But for the cleanest, you should try reading about AJAX.

How to trigger a file download when clicking an HTML button or JavaScript

This is crazy but I don't know how to do this, and because of how common the words are, it's hard to find what I need on search engines. I'm thinking this should be an easy one to answer.
I want a simple file download, that would do the same as this:
Download!
But I want to use an HTML button, e.g. either of these:
<input type="button" value="Download!">
<button>Download!</button>
Likewise, is it possible to trigger a simple download via JavaScript?
$("#fileRequest").click(function(){ /* code to download? */ });
I'm definitely not looking for a way to create an anchor that looks like a button, use any back-end scripts, or mess with server headers or mime types.
You can trigger a download with the HTML5 download attribute.
Download
Where:
path_to_file is a path that resolves to an URL on the same origin. That means the page and the file must share the same domain, subdomain, protocol (HTTP vs. HTTPS), and port (if specified). Exceptions are blob: and data: (which always work), and file: (which never works).
proposed_file_name is the filename to save to. If it is blank, the browser defaults to the file's name.
Documentation: MDN, HTML Standard on downloading, HTML Standard on download, CanIUse
For the button you can do
<form method="get" action="file.doc">
<button type="submit">Download!</button>
</form>
HTML:
<button type="submit" onclick="window.open('file.doc')">Download!</button>
A simple JS solution:
function download(url) {
const a = document.createElement('a')
a.href = url
a.download = url.split('/').pop()
document.body.appendChild(a)
a.click()
document.body.removeChild(a)
}
With jQuery:
$("#fileRequest").click(function() {
// hope the server sets Content-Disposition: attachment!
window.location = 'file.doc';
});
You can do it with "trick" with invisible iframe. When you set "src" to it, browser reacts as if you would click a link with the same "href". As opposite to solution with form, it enables you to embed additional logic, for example activating download after timeout, when some conditions are met etc.
It is also very silient, there's no blinking new window/tab like when using window.open.
HTML:
<iframe id="invisible" style="display:none;"></iframe>
Javascript:
function download() {
var iframe = document.getElementById('invisible');
iframe.src = "file.doc";
}
Bootstrap Version
<a class="btn btn-danger" role="button" href="path_to_file"
download="proposed_file_name">
Download
</a>
Documented in Bootstrap 4 docs, and works in Bootstrap 3 as well.
I think this is the solution you were looking for
<button type="submit" onclick="window.location.href='file.doc'">Download!</button>
I hade a case where my Javascript generated a CSV file. Since there is no remote URL to download it I use the following implementation.
downloadCSV: function(data){
var MIME_TYPE = "text/csv";
var blob = new Blob([data], {type: MIME_TYPE});
window.location.href = window.URL.createObjectURL(blob);
}
You can hide the download link and make the button click it.
<button onclick="document.getElementById('link').click()">Download!</button>
<a id="link" href="file.doc" download hidden></a>
What about:
<input type="button" value="Download Now!" onclick="window.location = 'file.doc';">
In my testing the following works for all file types and browsers as long as you use a relative link:
<button>Download 2</button>
/assets/hello.txt is just a relative path on my site. Change it to your own relative path.
my_file.txt is the name you want the file to be called when it is downloaded.
Explanation
I noticed there were comments under a lot of the answers that said the browser would just try to open the file itself rather than downloading it depending on the file type. I discovered this to be true.
I made two buttons to test it out using two different methods:
<button onclick="window.location.href='/assets/hello.txt';">Download 1</button>
<button>Download 2</button>
Notes:
Button 1 opened the text file in a new browser tab. However, Button 1 would download the file for file types that it couldn't open itself (for example, .apk files).
Button 2 downloaded the text file. However, Button 2 only downloaded the file if the path was relative. When I changed the path to an absolute path, then the browser opened it in a new tab.
I tested this on Firefox, Safari, and Chrome.
Hello I just include the word 'download' and works well.
<a href="file.pdf" download>Download</a>
So in javascript you can use the follow:
function onStartedDownload(id) {
console.log(`Started downloading: ${id}`);
}
function onFailed(error) {
console.log(`Download failed: ${error}`);
}
var downloadUrl = "https://example.org/image.png";
var downloading = browser.downloads.download({
url : downloadUrl,
filename : 'my-image-again.png',
conflictAction : 'uniquify'
});
downloading.then(onStartedDownload, onFailed);
If your looking for a vanilla JavaScript (no jQuery) solution and without using the HTML5 attribute you could try this.
const download = document.getElementById("fileRequest");
download.addEventListener('click', request);
function request() {
window.location = 'document.docx';
}
.dwnld-cta {
border-radius: 15px 15px;
width: 100px;
line-height: 22px
}
<h1>Download File</h1>
<button id="fileRequest" class="dwnld-cta">Download</button>
<button>Download!</button>
This will download the file as .doc file extension is not supported to be opened in browser.
One of the simplest way for button and the text-decoration will help to alter or to remove the text decoration of the link.
Anywhere between your <body> and </body> tags, put in a button using the below code:
<button>
<a href="file.doc" download>Click to Download!</a>
</button>
This is sure to work!
all you need to do is add Download after the file name which you have entered:
Before:
Download!
After
<a href="file.doc" Download >Download!</a>
Make sure the download is written with a capital letter otherwise it's not gonna work.
This is what finally worked for me since the file to be downloaded was determined when the page is loaded.
JS to update the form's action attribute:
function setFormAction() {
document.getElementById("myDownloadButtonForm").action = //some code to get the filename;
}
Calling JS to update the form's action attribute:
<body onLoad="setFormAction();">
Form tag with the submit button:
<form method="get" id="myDownloadButtonForm" action="">
Click to open document:
<button type="submit">Open Document</button>
</form>
The following did NOT work:
<form method="get" id="myDownloadButtonForm" action="javascript:someFunctionToReturnFileName();">
If you can't use form, another approach with downloadjs fit nice. Downloadjs use blob and html 5 file API under the hood:
<div onClick=(()=>{downloadjs(url, filename)})/>
*it's jsx/react syntax, but can be used in pure html
Not really an answer to the original question but it may help others which face similar situations as myself.
If the file you want to download is not hosted on the same origin but you want to be able to download it, you can do that with the Content-Disposition header. Make sure the server includes the header when responding to requests of the file.
Setting a value like
Content-Disposition: attachment will ensure that the file will be downloaded instead of viewed in the browser.
A simple Download pointing to your file should download it in this case.
If you want
Download
for the ability to download files that would be rendered by the browser otherwise, But still want a neat javascript function to use in a button; you can have an invisible link in html and click it in javascript.
function download_file() {
document.getElementById("my_download").click()
}
<a id="my_download" href="path_to_file" download="file_name" style="display:none;"></a>
<button onClick="download_file()">Download!!!</button>
Another way of doing in case you have a complex URL such as file.doc?foo=bar&jon=doe is to add hidden field inside the form
<form method="get" action="file.doc">
<input type="hidden" name="foo" value="bar" />
<input type="hidden" name="john" value="doe" />
<button type="submit">Download Now</button>
</form>
inspired on #Cfreak answer which is not complete
The solution I have come up with is that you can use download attribute in anchor tag but it will only work if your html file is on the server. but you may have a question like while designing a simple html page how can we check that for that you can use VS code live server or bracket live server and you will see your download attribute will work but if you will try to open it simply by just double clicking html page it open the file instead of downloading it.
conclusion: attribute download in anchor tag only works if your html file is no server.
For me ading button instead of anchor text works really well.
<button>Download!</button>
It might not be ok by most rules, but it looks pretty good.
If you use the <a> tag, do not forget to use the entire url which leads to the file -- i.e.:
Download

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