link to method and click event in Rails

Question

How do I create a link of this type    lt a href     onclick  document getElementById  search   value this value  gt    using method link to in Rails   I couldn t figure it out from Rails docs

User · Answer

just use       link to  link    javascript function

User · Answer

You can use link to function  removed in Rails 4 1    link to function  My link with obtrusive JavaScript    alert  Oh no       Or  if you absolutely need to use link to   link to  Another link with obtrusive JavaScript                 onclick   gt   alert  Please no       However  putting JavaScript right into your generated HTML is obtrusive  and is bad practice   Instead  your Rails code should simply be something like this   link to  Link with unobtrusive JavaScript             actual url in case javascript is broken            id   gt   my-link    And assuming you re using the Prototype JS framework  JS like this in your application js      my-link   observe  click   function  event      alert  Hooray       event stop       Prevent link from following through to its given href       Or if you re using jQuery       my-link   click function  event      alert  Hooray       event preventDefault       Prevent link from following its href       By using this third technique  you guarantee that the link will follow through to some other page mdash not just fail silently mdash if JavaScript is unavailable for the user  Remember  JS could be unavailable because the user has a poor internet connection  e g   mobile device  public wifi   the user or user s sysadmin disabled it  or an unexpected JS error occurred  i e   developer error

User · Answer

To follow up on Ron s answer if using JQuery and putting it in application js or the head section you need to wrap it in a ready   section       document  ready function           my-link   click function event       alert  Hooray         event preventDefault       Prevent link from following its href

User · Answer

another solution is catching onClick event and for aggregate data to js function you can   hmtl erb   lt    link to  Action    javascript     class   my-class   data     array    gt   w foo bar      gt     js     handle my-class click    a my-class   on  click   function        var link     this     var array   link data  array

[ruby-on-rails] link_to method and click event in Rails

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