You can do that using jQuery, http://stackoverflow.com/questions/12287996/jquery-change-value-when-value-of-other-input-field-is-changed
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Euan Leslie <[email protected]> writes: > Hi > > I want to change the value of a field when another field is updated. > > Specifically, I want my e mail field to get it's data from the username, > the domain always being the same, so username is say johndoe, e mail > address will be [email protected] > > my fields look like this: > > <p><h3><label class="field" for="username">Username:</label></h3> > <%= f.text_field :username, :style => "width: 250px" %></p> > > <p><h3><label class="field" for="email">Email Address:</label></h3> > <%= f.text_field :email, :style => "width: 250px" %></p> > > Very much a beginner with JavaScript incidentally so be gentle > > Help is very much appreciated. > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/a39507aa0805c3c7a406add16ccb8d97%40ruby-forum.com. > For more options, visit https://groups.google.com/d/optout. -- GPG key: 0xD3D7DE92 http://paulogeyer.github.io/ -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/87y4dy9izp.fsf%40dagny.auszug.com.br. For more options, visit https://groups.google.com/d/optout.
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