Input form where user could enter regular expression
I have a rails application in which I need to create some input form where user could enter regular expression. This regex needed to be passed to my method check_site(url, rege开发者_运维百科x) that will return true or false depends on regex found on the page. I've tried to create a 'link_to':
link_to 'Search', check(item.name, @pattern)
In this case method "check" is called not with button pressed but with page loading. Do I need to use JS+AJAX? How to?
Crash course on getting AJAX/JS set up with your Rails form:
Ensure correct javascript is called in your page
<head>: JQuery + application.js (Jquery-compatible version, of course!)Change your link to:
link_to 'Search', check_item_path(:name=>item.name, :id=>@pattern, :var=>var, etc.), :remote => trueIn items_controller:
def check ...your regex... respond_to do |format| format.html { redirect_to ...(wherever you'd like if no .js) } format.js end endCreate a file called
check.js.erbin the corresponding views folder and enter the javascript you'd like to update the page / confirm the form's successful submission / return results from your search, etc.$(document).ready( function() { $("#result").html(" <%= @item.result == true ? "true" : "false" %> "); });
No method error: check_item_path
This means Rails is not recognizing the route to that controller action. Run rake routes in console and see if anything corresponds to the items controller, check_item action. If not, add:
match 'items/check_item'
to your routes file. Then run rake routes again and you should see check_item appear somewhere - if it does, you can use check_item_path again.
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