Simple link_to_remote function - can't get it to work - ruby-on-rails

After utilizing the great trial and error for over an hour along with dozens of tutorials and blogs posting examples, I still cannot get the simple ajax functionality to work. Here is what is in my partial:
<span id="friend">
<%= link_to_remote image_submit_tag("/images/add_as_friend.gif"), :url => {:controller => 'friends', :action => 'add', :id => id} %>
</span>
This is what is in my controller:
class FriendsController < ApplicationController
def add
unless params[:id].nil?
Friend.create(:user_id => #current_user.id, :friend_id => params[:id], :friend_type => 2)
end
end
end
This is what is in my add.rjs file:
page.replace_html 'friend', "A request to be friends with this player has been sent."
The image for the link comes up fine. When I click on it, however, nothing happens. I've checked the database and nothing is going on. I must be missing something, any thoughts?

It may be because you are using image_submit_tag rather than image_tag for the content of your link. image_submit_tag is for submitting forms so will have its own onclick behaviour which may override the onclick behaviour that will be added as part of the link_to_remote functionality.
I would try:
<%= link_to_remote image_tag("/images/add_as_friend.gif"),
:url => {:controller => 'friends', :action => 'add', :id => id} %>

Related

rails link_to controller action

I show in my homepage 4 pictures, and when a user click on one of it, I want to change a parameter :asked in my db.
In my view I've added
<%= link_to image_tag(friends.picture), {:controller => "static_pages", :action => "recomend", :id => friends.user_id} %>
In the Static_Pages_Controller I have
def recomend
a = Friends.find_by_user_id(params[:id])
a.update_attribute(:asked, true)
end
And in routes.rb
resources :static_pages do
resources :recomend
end
but when I click on it, the server refresh my home (why?!) and in the server logs i see
Started GET "/auth/failure?action=recomend&controller=static_pages&id=101" for 127.0.0.1 at 2012-11-17 19:59:25 +0100.
Maybe it's not recognize the link. I suppose friends.picture is a link for image, so you can try this:
<%= link_to( "", :controller => "static_pages", :action => "recomend", :id => friends.user_id) do %>
<%= image_path(friends.picture) %>
<% end %>

Rails 3 - button_to update same page with controller#method

In my project I have the following form_tag to select a Site
<%= form_tag({:controller => "hvacs", :action => "index"}, :method => "get") do %>
<div class="field">
<%= select :p, :site_sel, #user_sites.map{|s| [s.name, s.id]} %>
</div>
<div class="actions">
<%= submit_tag("Select site") %>
</div>
<% end %>
This form_tag updates the index page through calling its method in the controller again.
I have the following button_to
<td><%= button_to 'Select', {:controller => "hvacs", :action => "select"}, :method => "get" %></td>
I would like to achieve a similar update with this as above rather than redirect to a new page with "select_path" etc, but the above does not seem to work.
How can I achieve this? Cheers!
OK, this looked so much like my AJAX problem, I tried to make it one!
I think all you need is a simple render statement in your select action
render :index
or
render :action => 'index'
But see http://guides.rubyonrails.org/layouts_and_rendering.html#using-redirect_to for more.
The following solution worked. Apologies if I was not so clear on what I was looking for.
<%= button_to 'Select', review_hvacs_path(:h => hvac, :a => params[:a], :s => params[:s]) %>
I was trying to pass parameters with the button, while staying on the review page.

Disable link_to tag in Rails3+

I used the following code:
<%= link_to image_tag("edit.png", :alt => "Edit"), edit_user_path(user) %>
I want to disable this link and image, so I added :disabled=>true to the code, but it's not disabling. Why not, and how do I disable them?
I'm not sure what #lamrin wanted with this question, but I suppose that it is something like this:
<%= link_to_if condition?, image_tag("edit.png", :alt => "Edit"), edit_user_path(user) %>
With this code above, the image would have a link if the condition? is true
In my case this code below worked (a more complicated example):
link_to_unless disabled, (content_tag :div, "", :class => "vote " + vote_class, :title => title), resource_user_path({ :id => resuser.id, :resource_user => {:id => resuser.id, :resource_id => resource_id, :user_id => current_user_id, :vote => vote_value}}), :remote => true, :method => http_method
This link may also help with this approach:
http://railskey.wordpress.com/2012/07/19/rails-link_to-link_to_if-and-link_to_unless/
Unlike buttons, hyperlinks cannot be "disabled". You can do the following though, assuming you have jQuery included on your pages:
<%=link_to image_tag("edit.png", :alt=>"Edit"), edit_user_path(user), :id => "mylink" %>
Add the following Javascript to your page:
$('#mylink').click(function(e){
e.preventDefault();
});
In answer to your question, there is no :disabled option for the link_to helper in Rails, and it is not a valid attribute for a elements either. I believe the reason people tend to get confused with this in Rails is that ":disabled => true" does work IF you are using Bootstrap. So to fix this issue you can either follow Gupta's approach, or just add Bootstrap (which will give you some default CSS as well, so people don't get frustrated trying to click the link)!
Re: link_to method in rails: http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to)
Re: the "disabled" attribute on a elements: Is 'disabled' a valid attribute for an anchor tag
Re: Bootstrap "disabled" class or attribute with bootstrap: http://getbootstrap.com/css/#anchor-element-1
1)One solution is to render just image_tag when you do not want link and use link_to when u want link to be click enabled. you can use instance variables to control what to render.
2) or use Javascript as suggested.
Use 2 if you want to dynamically do it.
You may use conditional link_to:
<%=
link_to_if(#current_user.nil?, "Login", { :controller => "sessions", :action => "new" }) do
link_to(#current_user.login, { :controller => "accounts", :action => "show", :id => #current_user })
end
%>

Select_tag submitted needs to redirect to show page with :id?

Hi
I have asked a question similar to this before but never got it resolved. So I am trying again.
This seems like it should be so simple. I am not using Rails 3 yet BTW.
All I want to do is have a drop down menu and when a person chooses that location and presses "go" they go to that page.
<% form_tag installation_path([:id]), :url => { :action => "show" }, :method => :get do %>
<%= select_tag :id, options_from_collection_for_select(Installation.find(:all), :id, :name) %>
<%= submit_tag 'Go' %>
<% end %>
This becomes the issue: http://localhost:3000/installations/id?id=1&commit=Create. It can't find the :id. I just don't know how to route this correctly. It seems like this shouldn't be that difficult.
Any help would be great. Thanks.
I think there might be a problem with your form_tag. It seems you're defining the path twice.
Both
installation_path([:id])
and
:url => { :action => "show" }
are used to generate the path but I don't think you should be using both. Just go with
installation_path([:id])
or
:url => { :controller => "installations", :action => "show", :id => id }
You need to create and use a new "show" route that is not based on the installation id (and doesn't collide with Rails resource routes), and continue to send the installation id into the controller's show action as part of the params object.
In routes.rb,
get 'show_installation', to: 'installations#show'
In your view,
<% form_tag show_installation_path, :method => :get %>
...

How do properly delete this?

Something is seriously not adding up here.. My page just refreshes, nothing happens, it never touches any of my debuggers hanging out on all my methods except for index.
my html:
<%- for image in #images %>
<%= image.attachment_file_name %>
<%-# link_to_delete image, :url => destroy_image_admin_wysiwyg_path(image.id) %>
<%= link_to 'delete', { :url => destroy_image_image_path(image.id) },
#:confirm => 'Are you sure?',
:post => true
%>
<br />
<% end %>
my controller
def destroy_image
debugger
#img = Image.find(params[:id])
#img.destroy
respond_to do |format|
format.html { redirect_to admin_image_rotator_path }
end
end
My routes:
map.resources :images, :member => { :destroy_image => :post }
My disgusting hack that works that I will replace as soon as I find something better
I moved the action over to a simpler controller I built myself.
Changed my routes to :
admin.resources :wysiwygs, :member => { :destroy_image => :post }
Changed my html :
<%= link_to 'delete', :controller => "wysiwygs", :action => "destroy_image" %>
But when I clicked on the link..it brought up.. the show action ?? fffffffffuuuuuuu
I retaliated by just moving my action to the show action, and passing a hidden field in my html..
<%= link_to 'delete', :controller => "wysiwygs", :action => "destroy_image", :hidden_field => {:value => image.id} %>
def show
# this was previously in destroy_image
#img = Image.find(params[:hidden_field][:value])
#img.destroy
respond_to do |format|
format.html { redirect_to admin_image_rotator_path }
end
end
It seems you're going down the wrong path here. If a before_filter is blocking your action, figure out why. Use skip_before_filter :filter_name if the filter is not needed.
Don't use show actions or HTTP GET for deletes. Even if it works, it will confuse things down the road. Use a DELETE verb:
map.resources :images, :member => { :destroy_image => :delete }
pass it in the link helper:
<%= link_to "delete", destroy_image_image_path(image), :method => :delete %>
And use ImagesController#destroy_image to perform the action. Better yet, consider using the standard RESTful ImagesController#destroy which map.resources gives you for free.
Not sure what was wrong in the first place, but in your second, working solution, i think you should write your link_to as follows:
link_to 'delete', :controller => "wysiwygs", :action => "destroy_image", :id => image.id
That at least would send you to the correct action.
Depending on your routes, you will have to make this a method => :post or not.
Check your rake routes output, it will show you what are the possible routes, and also what names they got, which in turn you can use as a method (add _path or _url at the end). Then it should be even easier to write something like:
link_to 'delete', wysiwygs_destroy_image_path(image)
Good luck!
You're doing a POST but your resource says that :destroy_image is only available via GET. Try changing your route to:
map.resources :images, :member => { :destroy_image => :post }
Also, take a look at your link_to. The second parameter takes a URL, not a hash that has a :url key. As mentioned elsewhere, depending on your Rails version you may need :method => :post instead of :post => true. In Rails 2.3.8, you would want this line instead:
<%= link_to 'delete', destroy_image_image_path(image), :method => :post %>

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