link_to with current value of text box.

rubyonrails-talk
1

Hi,

I have a project in which I need to have a link_to pass the current value of one text box to my controller. This link is outside my form, and I wish to do this without submitting the form (using javascript).

I thought of using something like the following: <%= link_to "Trade Fax", trade_items_path(:person_contacted => "document.getElementById(reference_trade_items__person_contacted).value();"), :popup => true %>

This however does not evaluate the javascript, and just passes it as a string. Should I somehow be using a link_to_function?

Thanks for your help

2

Lundie wrote:

Hi,

I have a project in which I need to have a link_to pass the current value of one text box to my controller. This link is outside my form, and I wish to do this without submitting the form (using javascript).

I thought of using something like the following: <%= link_to "Trade Fax", trade_items_path(:person_contacted => "document.getElementById(reference_trade_items__person_contacted).value();"), :popup => true %>

This however does not evaluate the javascript, and just passes it as a string. Should I somehow be using a link_to_function?

Thanks for your help

This may or may not be helpful, but I know with link_to_remote you have contained within a div. You just give the :submit the value of the id for the div which will then get passed onto the correct method in the controller. In this way you can make a link behave like a form. Hope this helps,

-S

3

One way or another you have to get your javascript into an onclick (By the way, if you've got prototype loaded a more concise way of saying that is $F('reference_trade_items_person_contacted'). Even if you don't have prototype, you've currently got some syntax errors in there.

One way would be something like

link_to "Trade Fax", trade_items_path, :onclick => "this.href += '?person_contacted=' + encodeURIComponent($F('reference_trade_items_person_contacted')); return true"

This won't do the right thing if you want it to open in a popup window - that already sets an onclick. you'd need an onclick that looked like "window.open(this.href + '?person_contacted=' + encodeURIComponent($F('reference_trade_items_person_contacted')); return false"

("person_contacted=' + encodeURIComponent($F('reference_trade_items_person_contacted')" can be shortened to $('reference_trade_items_person_contacted').serialize() but that will probably result in a different parameter name arriving at your controller )

Fred

4

Thanks guys!

I have gone ahead and used this example, and it works great! "window.open(this.href + '?person_contacted=' + encodeURIComponent($F('reference_trade_items_person_contacted')); return false"

5

Lundie wrote:

Thanks guys!

I have gone ahead and used this example, and it works great! "window.open(this.href + '?person_contacted=' + encodeURIComponent($F('reference_trade_items_person_contacted')); return false"

On Aug 5, 3:43�pm, Frederick Cheung <frederick.che...@gmail.com>

I've done this with the observe_field prototype helper. Works quite well actually. It will push the value of the field it's observing to the controller.

6

I've done this with the observe_field prototype helper. Works quite well actually. It will push the value of the field it's observing to the controller.

Rails Doc - Devenez riche de connaissances

Oops didn't understand the first post. disregard.