I have this tag: <%= link_to 'Show', user_listing_url(listing.user, listing) %> but instead of simply having it say 'Show' I actually want to place HTML inside of the <a> tag. Is this possible?
Example:
<div><div><img /></div></div>
yes you can pass a block to link_to
try something like this:
<%= link_to(user_listing_url(listing.user, listing)) do %>
<div><div><img/></div></div>
<% end %>
I totally recommend marflar's answer above.
However I would add one comment which is that if you are using html elements within a link_to block this may apply rails default link styling which may not be desirable.
One alternative is to use a button_to link but don't forget the default method for this is POST so specify the options as GET:
button_to(user_listing_url(listing.user, listing), method: :get) do %>
<div></div>
<% end %>
Related
There is a website attr on product_lead table which is optional. If it's present then I wanna turn #produc_lead.lead into a link, but if it's not it should be plain text.
If I use the code below and the website is nil then the link points to the page the user is currently on. If I do it with #product_lead.try(:website), it's gonna be the same. But as I mentioned I would like to have plain text over link in this case.
<%= link_to #product_lead.website, target: "_blank" do %>
<%= #product_lead.lead %>
<% end %>
After playing around I fell back to the following solution, but it's terrible. Any better ideas?
<% if #product_lead.website %>
<%= link_to #product_lead.website, target: "_blank" do %>
<%= #product_lead.lead %>
<% end %>
<% else %>
<%= #product_lead.lead %>
<% end %>
Maybe link_to_if if Rails 4
<%= link_to_if(#product_lead.website, #product_lead.lead, #product_lead.website) do %>
#product_lead.lead
<%= end %>
You can create custom view helper for this.
Well, link_to is going to generate a <a> tag, whether you provide a valid URL or not. So if the URL is nil, yes, it's gonna be a link for you own page.
If you want to "hide" this, you could call a partial in which you place you if/else and so on, but it's just to sweep this under the rug :)
Or if you wanna go further, as #Jovica Šuša, a view helper is the most elegant solution.
I am trying to use link_to in rails 4 with controller and html options and a do..end block. I have seen similar posts but have not been able to use any of the answers successfully.
Working code without a do..end block:
<%= link_to 'recommend', { controller: 'recommendations', id: offer.id }, method: :post %>
When I try to use some embedded ruby to add extra information to the link, I cannot get it to work:
<%= link_to( { controller: 'recommendations', id: offer.id }, method: :post) do %>
<p>Some Html</p><%= offer.recommendations %>
<% end %>
The code compiles but in the rendered, the link that is generated is the following:
<a controller="recommendations" id="38">
<p>Some Html</p>0
</a>
Any help would be appreciated. I think that it is a small problem with the syntax but I have tried all manner of brackets, spaces etc that I could think of without luck.
UPDATE: I have tried the following code without success:
<%= link_to( { controller: 'recommendations', action: 'create', id: offer.id }, method: :post) do %>
<p>Some Html</p><%= offer.recommendations %>
<% end %>
The HTML output is:
<a action="create" controller="recommendations" id="39">
<p>Some Html</p>0
</a>
This might not be important but as a side note, the create action doesn't have a helper function for links. When I run the
rake routes
command I get the following
...
recommendations GET /recommendations(.:format) recommendations#index
POST /recommendations(.:format) recommendations#create
new_recommendation GET /recommendations/new(.:format) recommendations#new
...
In my opinion this isn't a problem but it is a reason why code such as:
link_to create_recommendation_path
won't work. Finally, the intention of the link is to act as a 'like' button. It creates a recommendation and then displays the current page again. Once again, thanks for the help in advance.
The reason link_to create_recommendation_path doesn't work is because there is no named route for create_recommendation_path, only for recommendations_path. You can see the named routes in your routes list (which you have in your post above). The left most column that comes out of routes shows the named routes. Notice that recommendations#create doesn't have an entry in the list.
You could probably get the path you want with
<%= link_to recommendations_path(:offer_id => offer.id), :method => :post do %>
html stuff
<% end %>
This should post to a path that looks like
/recommendations?offer_id=<the offer id>
(except the post data will be in the headers not on the URL)
This will work if the create method going to do something like
Recommendation.create(params)
and the only parameter you need to create a new Recommendation is an offer_id
What I don't understand is why you're trying to POST with a link? Does creating a recommendation only require an offer id?
In your link_to you're only specifying a controller, you need to also specify the action otherwise it doesn't know where to route it to. Either use:
<%= link_to({ controller: 'recommendations', action: 'show', id: offer.id }) do %>
<p>Some Html</p><%= offer.recommendations %>
<% end %>
Or
<%= link_to({ show_recommendations_path(id: offer.id) }) do %>
<p>Some Html</p><%= offer.recommendations %>
<% end %>
My original intention was to display some text on the image. At the same time, when we click the images, the webpage will be redirected.
And I use link_to function with div containing background image.
The code is like this:
<%= link_to raw('<div style="background-image:url(<%= image_url '1.jpg'%>);width:340px;"> This is a test</div>'),index_by_dvp_domain_path %>
But the system tells me there is SyntaxError.
You can pass link_to a block that contains the content you want to display. So instead of going with the link_to(display, url, options={}) you get link_to(url, option={}, &block) where you can do.
<%= link_to index_by_dvp_domain_path do %>
<div style="background-image: url(<%= image_url '1.jpg'%>);width:340px;">
This is a test
</div>
<% end %>
After you do this you can treat it like normal html.
As always, I'd recommend trying to move any style out into it's own separate stylesheet.
Best way to do it this is used following
<%= link_to index_by_dvp_domain_path do
content_tag(:div, 'This is a test',:style=>"background-image:url(#{image_url} '1.jpg');width:340px;" )
end
%>
OR
<%= link_to content_tag(:div, 'This is a test',:style=>"background-image:url(#{image_url} '1.jpg');width:340px;" ), index_by_dvp_domain_path %>
Please have a try with
<%= link_to raw('<div style="background-image:url(#{image_url '1.jpg'}%>);width:340px;"> This is a test</div>'),index_by_dvp_domain_path %>
I think using Link_to as below would be much more simpler even when you have a big block including multiple tags:
<%= link_to desired_path do %>
<div class="linkable">
<another div>
... some other tags
</another div>
</div>
<% end %>
and I recommend you to use a different background color for mouse over events because it shows the viewer that it's a link!
In you .css file:
.linkable:hover{
background-color: red;
}
Im so surprised to see that no one came up with the regular way of doing it in Rails.
<%= link_to image_tag("/images/1.jpg",:size => "340X340"),index_by_dvp_domain_path %>
I've just started using rails yesterday, so this is a kinda noob question
for example, a user is at www.example.com/name
and I want to make several links to www.example.com/name/:id
So I tried something like this:
<% #items.each do |item| %>
<%= link_to item.name, '/name' :id %>
<% end %>
I know, it was a complete guess on how I should write the code, but the restful code sends to a completely wrong link. How should I write this three lines?
Use the route helper:
<% #items.each do |item| %>
<%= link_to item.name, item_path(item) %>
<% end %>
ps: when you have a simple question like this one, take a look at this guide, you'll often find the answer.
Try
<%= link_to item.name, item_path(item) %>
item_path is a URL helper method which spits out the link to show a name.
URL helpers have the general form:
{action}_{class}_path({object or object_id})
If {action}_ is omitted, then the default action is assumed (normally show).
I used this gem in my application, but I'm not sure the difference between the different implementation options for the gem:
form_for
form_tag with block
form_tag without block
Can anyone clarify? I understand that form_for is used when you wish to interact with a model, but what about the other two?
The differences are subtle, but important. form_for is a more advanced tool that yields an object you use to generate your form elements:
<% form_for(#foo) do |form| %>
<%= form.text_field(:bar) %>
<% end %>
The form_tag method is much more primitive and just emits a tag. If you want to put things inside of the <form> tag that's emitted, you put things inside the block:
<% form_tag do %>
<%= text_field_tag(:bar, 'bar_value') %>
<% end %>
Note that the form_for method handles grabbing values from your model, and will at least try to route the form to the appropriate action. With form_tag you are responsible for everything as it makes no assumptions about what you're doing.
One uses model binding and the other doesn't
As far as I know there is only one simple difference. form_tag without a block will only generate a html element for you. When you use form with a a block it will also create the form closing tag .
In example:
<% form_tag("/comments") %>
will result in
<form action="/comments">
Where
<%= form_tag("/comments") do %>
<%= submit_tag %>
<% end %>
will generate
<form action="/comments">
<input type="sumbit" />
</form>