Rails - Mar 2008 - add text string to a database field when a button is pressed

Hello I am new to ruby and rails (using rails 2). Can some body please
help with the following -
I have a form with a database text field and a series of buttons when a
button is pressed i need a specific string with a time & date stamp
inserting into the on screen text field.
The problem is I don''t want the buttons to post the form, I want the
form to stay open so the user can add additional notes to the same
database text field.
When they have finished then they can hit the create button to insert
into the database their completed text.

How should I do this, code examples would be helpful as I am a newbie to
programming with ruby, rails & javascript.

Thanks in advance
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Maybe this can help you:

http://www.railsbrain.com/api/rails-1.2.3/doc/index.html?a=M001753&name=button_to_function


for the javascript function this should do it:

$(''id_of_your_text_field'').value = ''your
string''

Stijn
http://www.xaop.com

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Stijn Pint wrote:
> Maybe this can help you:
> 
>
http://www.railsbrain.com/api/rails-1.2.3/doc/index.html?a=M001753&name=button_to_function
> 
> 
> for the javascript function this should do it:
> 
> $(''id_of_your_text_field'').value = ''your
string''
> 
> Stijn
> http://www.xaop.com
Hello Stijn

Thanks for helping,
I have looked at the button_to_function help doc and searched google 
etc. and because I am a total newbie it dosen''t make much sence to me 
with regards to the implementation of the javascript side of things.

so I have a few questions I was hoping you could help with..

1.  Do I put the javascript in the controller.rb  as a ''def'' 
or does it
go in my html.erb file?  - do you have a sample source code example 
please :)?

2.  The (''id_of_your_text_field'')  - how do I know what my
text field id
is, for example I have the following extracted from my html.erb file...

    <!--
    <b>Action log</b><br />
    <%= f.text_area :action_log %>
    -->

so would my id of my text be - ''action_log'' ?

3. I was wondering if the user typed some text in the field and then 
clicked the button would the users text be wipped out of the field by 
the button action? - that would be a problem.

thanks

phil

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ok Thanks to Stijn and this website...

http://www.developnew.com/javascript/textbox.php

I was able to work out how to do this, so here is my code which is found 
in my new.html.erb file in the views folder...

------------------------ javascript code
function Assign()
{
  document.getElementById("logger_action_log").value   
document.getElementById("logger_action_log").value + "Here is my
output message.";
}
</script>

-------------------------  button code

<%= button_to_function "Greeting", "Assign()" %>

-------------------------

to get the ''logger_action_log'' id i just looked at my page
source code
from the web browser.

so its easy when you know how, hope somebody else finds this useful, let 
us know if you do.

Phil
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