# What is "The Rails Way" to do this?

**URL:** <https://www.ruby-forum.com/t/what-is-the-rails-way-to-do-this/155566>\
**Category:** Rails\
**Created:** [December 13, 2008, 4:50pm UTC](https://www.ruby-forum.com/t/what-is-the-rails-way-to-do-this/155566 "2008-12-13T16:50:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![oldbug](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/c0e974/32.png) [@oldbug](https://www.ruby-forum.com/u/oldbug)\
**Post date:** [December 13, 2008, 4:50pm UTC](https://www.ruby-forum.com/t/what-is-the-rails-way-to-do-this/155566/1 "2008-12-13T16:50:02Z")

</div>

I have a PHP application with the following in one of the “views”:

```
<input type="button" onClick="newAlt()" value=" + "></nobr>

```

The JavaScript for “newAlt()” is:

// using DOM create new input box for alternate part  
function newAlt() {  
var html = "\<input style=‘background-color:#FFFFCC’ ";  
html += "type=‘text’ id=‘rowcol’ name=‘partalternate.0.altpartnumber’  
";  
html += "joinkey=‘partid=\<?=$partid?\>’ ";  
html += "attrib=‘unique’ size=‘20’ ";  
html += “onChange=‘cellTripolar(this)’\>\n”;  
document.getElementById(“partnumber”).innerHTML += html;  
html = "\<input style=‘background-color:#FFFFCC’ ";  
html += "type=‘text’ id=‘rowcol’  
name=‘partalternate.0.altmanufacturer’ ";  
html += "joinkey=‘partid=\<?=$partid?\>’ ";  
html += "attrib=‘unique’ size=‘20’\> ";  
document.getElementById(“manufacturer”).innerHTML += html;  
}

What is the Rails way to render the HTML that get’s dynamically added to  
the  
page when the user presses the “+” button?

–wpd

---

<div class="post-metadata">

**Author:** ![oldbug](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/c0e974/32.png) [@oldbug](https://www.ruby-forum.com/u/oldbug)\
**Post date:** [December 13, 2008, 5:35pm UTC](https://www.ruby-forum.com/t/what-is-the-rails-way-to-do-this/155566/2 "2008-12-13T17:35:10Z")

</div>

On 13 Dec 2008, at 15:49, Patrick D. wrote:

> 0.altpartnumber’ ";  
> }
> 
> What is the Rails way to render the HTML that get’s dynamically  
> added to the page when the user presses the “+” button?

update\_page do |page|  
page.insert\_html :bottom, ‘partnumber’, :partial =\> ‘some\_partial’  
page.insert\_html :bottom, ‘manufacturer’, :partial =\>  
‘some\_other\_partial’  
end

would generate javascript similar to the body of that method

Fred

---

<div class="post-metadata">

**Author:** ![oldbug](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/c0e974/32.png) [@oldbug](https://www.ruby-forum.com/u/oldbug)\
**Post date:** [December 13, 2008, 5:51pm UTC](https://www.ruby-forum.com/t/what-is-the-rails-way-to-do-this/155566/3 "2008-12-13T17:51:07Z")

</div>

On Sat, Dec 13, 2008 at 11:34 AM, Frederick C. \<  
removed\_email\_address@domain.invalid\> wrote:

> > // using DOM create new input box for alternate part  
> > 0.altmanufacturer’ ";  
> > page.insert\_html :bottom, ‘partnumber’, :partial =\> ‘some\_partial’  
> > page.insert\_html :bottom, ‘manufacturer’, :partial =\>  
> > ‘some\_other\_partial’  
> > end
> 
> would generate javascript similar to the body of that method
> 
> Fred

Thanks… that gives me the direction to go looking. I’ll still need to  
figure out whether that code coes in the view or in the controller, and  
how  
one hooks up that code to the onClick property of the button, but I’m  
sure  
there are 100’s of tutorials out there that describe that.

Thanks again.

–wpd