RoR: Replace_html with partial and collection not functioning - ruby-on-rails

I am trying to create a tabbed interface using the prototype helper method "replace_html." I have three different partials I am working with. The first one is the 'main tab' and it is loaded automatically like so:
<div id = "grid">
<% things_today = things.find_things_today %>
<%= render :partial => "/todaything", :collection => things_today, :as =>:thing %>
</div>
...which works fine. Similarly, I have a _tomorrowthing partial which would replace the content in the 'grid' div like so:
<%things_tomorrow = things.find_things_tomorrow%>
<%= link_to_function('Tomorrow',nil, :id=>'tab') do |page|
page.replace_html 'grid' , :partial => '/tomorrowthing',:collection => things_tomorrow, :as => :thing
end %>
If I click on this tab nothing happens at all. Using firebug, the only errors I find are a missing ) after argument list which is contained in the Element.update block where the link_to_function is called. What am I doing wrong?

Hey Jack i try to reproduce the same but i can't i never used link_to_function before but
Following code may help to achieve the same you want
<%= link_to_remote "Today Thing", :url=>{:action=>"things", :id=>'today'}%>
<%= link_to_remote "Tomorrow Thing", :url=>{:action=>"things", :id=>'tomorrow'}%>
<div id = "grid">
<% #things = things.find_things_today %>
<%= render :partial => "/todaything", :collection => #things %>
</div>
in controller
def things
#things= (params[:id]=="today")? things.find_things_today : things.find_things_tomorrow
render :update do |page|
page.replace_html 'grid', :partial => (params[:id]=="today")? "/todaything" : '/tomorrowthing' , :objects=> #things
end

Related

How to ajax reload partial from partials

I have an app in which I different networks have messages.
In my network show view I display all the messages in with a partial "overview" which shows a link to the message content. The content of the messages is loaded with ajax inside #detailed div:
<div class="span2" id="sidebar">
<%= render :partial => 'shared/sidebar' %>
</div>
<div class="span4" id="overview">
<%= render :partial => 'overview' %>
</div>
<div class="span6" id="detailed">
<%= render :partial => 'nothing' %>
</div>
_overview.html.erb, in which i :
<h2>Messages</h2>
UNREAD:
<%= render :partial => 'items', :collection => #task.find_all{|item| item.unread == true }.sort_by(&:created_at).reverse, :as => :item %>
READ:
<%= render :partial => 'items', :collection => #task.find_all{|item| item.unread == false }.sort_by(&:created_at).reverse, :as => :item %>
_items.html.erb:
<%= div_for item do %>
<%= link_to(network_message_path(#network, item), :remote => true, :class => ["message item", ("unread" if item.unread == true)]) do %>...<% end %>
<% end %>
The message is contains a partial again with the full content, comments etc.. Code by which the message is loaded:
$("#detailed").hide().html("<%= j(render('show_message', :message => #message)) %>").fadeIn('fast');
If someone opens the detailed view, I update the unread status of the message to false. I would like to reload the overview partial, if someone loads the message into the details. One solution would be to just use jQuery to move things around, but the system will become more complicated with more filtering options. Therefor, reloading the overview partial would be a simpler solution. But what would be the fastes way to do so? As I need to reload the show method in the networks controller, alongside loading the show method in the message controller.
What would be the best solution, besides jQuery?
Created a module to load the overview partial with ajax.

Rails 3: Can't add correct route to legacy code

Believe you can help me.
I'm trying to add new functionality to legacy code (Typo). But it seems that there is some problem about routing.
In the project routes are generated the following way:
%w{advanced cache categories comments content profiles feedback general pages
resources sidebar textfilters themes trackbacks users settings tags redirects seo post_types }.each do |i|
match "/admin/#{i}", :to => "admin/#{i}#index", :format => false
match "/admin/#{i}(/:action(/:id))", :to => "admin/#{i}", :action => nil, :id => nil, :format => false
end
My functionality is about merging articles. For that I've added new action in the /admin/content controller:
def merge
#some code here
end
A piece of a view partial (_form.html.erb) added by me:
<% if current_user.admin? and !#article.id.nil?%>
<div class=''>
<h4><%= _("Merge Articles") %></h4>
<%= label_tag :merge_with, 'Article ID' %><%= text_field_tag :merge_with, nil, :size => 20 %>
<%= button_to 'Merge', admin_content_merge_path(:id => #article.id) %>
</div>
<%end%>
This partial is rendered by another partial (_edit.html.erb)
<%= form_tag(form_action, :id => "#{form_type}_form", :enctype => "multipart/form-data", :class => className) do %>
<%= render :partial => "form" %>
<% end %>
And finally _edit.html.erb is rendered by view new.html.erb
<%= render "admin/shared/edit", { :form_type => "article", :form_action => { :action => "new", :id => #article.id , :class => ('autosave')} } %>
The problem is how to write a correct route for the controller action above which will allow me to render an edit page containing newly merged article. I wrote:
match "/admin/content/merge/:id" => "admin/content#merge",:as => 'admin/content/merge'
rake routes output:
admin_content_merge /admin/content/merge/:id(.:format) {:controller=>"admin/content", :action=>"merge"}
But the new or edit action is being invoked as I can see.
Apparently, my route is wrong, isn't it?
Could you please help me with this.
Thanks in advance!
Update
Up-to-date new.html.erb:
<% #page_heading = _('New article') %>
<%= render "admin/shared/edit", { :form_type => "article", :form_action => { :action => "new", :id => #article.id , :class => ('autosave')} } %>
<% if current_user.admin? and !#article.id.nil?%>
<%= form_tag "/admin/content/merge/#{#article.id}" do %>
<h4><%= _("Merge Articles") %></h4>
<%= label_tag :merge_with, 'Article ID' %>:
<%= text_field_tag :merge_with %><br />
<%= submit_tag "Merge" %>
<% end %>
<% end %>
Read the hint from the course:
HINT:Nesting is invalid in HTML.
That means that you can't nest form tags, don't put the form tag in another form tag, your nested form wont be able to do a correct action.
Since you have to put your code at the end of the page, try and see how to do it with having your merging form tag below the main edit article form tag. So basically you can find where the big form tag ends and put it below it.
Try to see if you can figure it out, and if not, don't hesitate to ask :)
Btw. I think everybody had some problem with this

Why does my render partial call not give me proper access to the local variable?

On my Home#Index page, I have this:
<%= render 'home/popular_products', :collection => #products, :as => :product %>
In my Home#_popular_products view, I have this:
<div class="span2 recommended">
<%= image_tag product.image_url(:thumb).to_s %>
</div>
This is the error I keep getting:
undefined local variable or method `product' for #<#<Class:0x007f871c4f6848>:0x007f871cdb7e28>
As far as I understand it, I shouldn't even have to specify the :as attribute in my render statement - but I tried this to be explicit after just using the :collection => #products wouldn't work.
In my Home#Index Controller I have this:
#products = Product.all.sample(6)
Thoughts?
I believe you have to specify the :partial option if you want to pass in any other options. Ie:
<%= render :partial => 'home/popular_products', :collection => #products, :as => :product %>
Should work.
Do you put _popular_products.html.erb file in your app/views/home/? I think you're using partial not following convention of rails, so rails's not understood product variable. Your partial should be named _product.html.erb if you want to used like that. With that partial, you can write like this:
<%= render #products %>
Update
Solution 1
Index page:
<%= render 'popular_products', :collection => #products %>
Partial:
<%= image_tag popular_products.image_url(:thumb).to_s %>
Solution 2
Index page:
<% #products.each do |product| %>
<%= render :partial => "popular_products", :locals => { :product => product } %>
<% end %>
Partial:
<%= image_tag product.image_url(:thumb).to_s %>

Ruby on Rails new objects in partial identifier stops at 1

I have Article(s), that has_many ArticleAssets. Fairly simple. On the edit form for the Article I just want to add new article assets. I don't need to edit the current ones, so I created a partial like this:
<% f.fields_for :article_assets, article_asset do |builder| -%>
<div class="article_asset">
<%= builder.file_field :image %>
<%= builder.check_box :is_flagged, :class => "isFlagged" %> isFlagged
</div>
<% end -%>
No collection, because I only need one object at a time and need no data from the existing article assets. In the form of edit.erb I render the following:
<%= render :partial => 'article_asset', :locals => {:f => f}, :object => ArticleAsset.new %>
This makes one new article asset show up that I can add information to, all cool so far. Important is that this field gets the name-form of article[article_assets_attributes][0][is_flagged]. All good since this will also group the hidden field that always comes with a checkbox in rails to the rest of the fields. Then I have an "Add item" link that does this:
page.insert_html :bottom, :article_assets_fields, :partial => "article_asset", :locals => {:f => f}, :object => ArticleAsset.new
Clicking on this link gives a new field under the created one, as expected, with the name-form of the checkbox field of article[article_assets_attributes][1][is_flagged]. Incremented, that's perfect! Adding another one with the same link however, also gives the same form (also with the identifier of 1, duplicate), which makes submitting the form only have 2 items instead of 3. Does anyone know why this happens and what I can do to solve it?
Ruby on Rails 2.3.11
Nested form 2.3 fail. This one was the bane of my existence for some time, even having watched the railscast etc. Here's my how to:
1) this goes in article.rb
after_update :save_article_assets
def new_article_asset_attributes=(article_asset_attributes)
article_asset_attributes.each do |attributes|
article_assets.build(attributes)
end
end
def existing_article_asset_attributes=(article_asset_attributes)
article_assets.reject(&:new_record?).each do |article_asset|
attributes = article_asset_attributes[article_asset.id.to_s]
if attributes
article_asset.attributes = attributes
else
article_assets.delete(article_asset)
end
end
end
def save_article_assets
article_assets.each do |article_asset|
article_asset.save(false)
end
end
2) In a helper somewhere:
def add_article_asset_link(name)
button_to_function name, :class => "new_green_btn" do |page|
page.insert_html :bottom, :article_assets, :partial => "article_asset", :object => ArticleAsset.new()
end
end
def fields_for_article_asset(article_asset, &block)
prefix = article_asset.new_record? ? 'new' : 'existing'
fields_for("article[#{prefix}_article_asset_attributes][]", article_asset, &block)
end
3) in your partial:
<% fields_for_article_asset(article_asset) do |aa| %>
<tr class="article_asset">
<td><%= aa.text_field :foo %></td>
<td><%= link_to_function "remove", "$(this).up('.article_asset').remove()" %></td>
</tr>
<% end %>
4) in the _form:
<table>
<%= render :partial => "article_asset", :collection => #article.article_assets %>
</table>
<%= add_article_asset_link "Add asset" %>

Nested link_to_function/insert_html does not work

Here is a simple example of the problem.
http://gist.github.com/235729
In short, if you have a index.rhtml with:
<%= link_to_function "A link to insert a partial with nested insert_html" do |page|
page.insert_html :top, :with_a_nested_insert_html, :partial => 'example_partial_with_nested_insert_html'
end %>
And a _example_partial_with_nested_insert_html.rhtml
<%= link_to_function "A nested link to insert_html" do |page|
page.insert_html :top, :with_a_nested_insert_html, :partial => 'you_wont_see_this'
end %>
It breaks the "A link to insert a partial with nested insert_html". I am thinking something needs to be done to protect the javascript in the partial.
Any thoughts?
Here's how I do it.
<%= link_to_function( "insert it", :id => 'foo') do |page|
partial = escape_javascript(render :partial => "my_partial", :object => Object.new)
page << "$('#my_div').append(\"#{partial}\")"
end %>
Try using escape_javascript before rendering the partials - see this other question.
I didn't try but I strongly think the syntax should be more something like :
<% link_to_function "A link to insert a partial with nested insert_html" do |page|
<%= page.insert_html :top, :with_a_nested_insert_html, :partial => 'example_partial_with_nested_insert_html' %>
<% end %>

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