How to Get value of text_field rails

问题

I have a text field as:

<%= text_field :search, :class=>'input-xxlarge search-query',:id=>'keyword' %>

Then on click of a link I want to pass the value in this text field to a controller method. I do not want to use a form and form submit.

I have the link as:

<a href ="/home/search" >GO</a>

and to this 'search' method I want to pass the text field value.... also to go directly to the page "/home/search" designed to this action "search"

How do I do this??? Thank you...

回答1:

Read here link_to send parameters along with the url and grab them on target page

<%= link_to "Go", '/home/search?param1=value' %>

So if you won't use form, you should use jQuery for put value of field into attribute link (href) with parameter. Example on jsffidle

<%= text_field :search, :class=>'input-xxlarge search-query',:id=>'keyword' %>
<%= link_to "Go", '', :id => "searchlink" %>


$(':input').bind('keypress keydown keyup change',function(){
    var word = $(':input[id="keyword"]').val();
    $('a[id="searchlink"]').attr("href","/home/search?param1=" + word.toString());

});

and in controller:

if params[:param1] == ""
 render :search # or redirect whatever do you want 
else
  param = params[:param1]
  ....
end

回答2:

In your routes file

resources :home do
    member do
        get 'search'
    end
end

In your html

<div id='parentDiv'>
    <%= text_field :search, nil, :class=>'input-xxlarge search-query',:id=>'keyword' %>
    <%= link_to("GO", '#', :class => 'search-link')
</div>

In the javascript file

$(document).ready(function(){
 $('div#parentDiv').on('click', '.search-link', function(){
  var search_val = $('#keyword').val().trim();
  if(search_val != ''){
    window.location.href='/home/'+search_val+'/search';
  } else{
    alert('You need to enter some data');
  }
 });
});

And in your search action

def search
  search_value = params[:id]
  # your code goes here.
end

回答3:

Try something like this...(not tested). This will give you the logic.

<%= link_to "Go", "#", onclick: "window.location = \"www.sitename.com/home/search?q=\"+$(\"#keyword\").val()" %>

来源：https://stackoverflow.com/questions/17468695/how-to-get-value-of-text-field-rails

标签

ruby-on-rails

redirect

textfield