Here is my view:
<div>
<ul>
<%= #album.photos.each do |photo| %>
<li><%= link_to(image_tag(photo.soure.url(:small)),photo.source.url(:medium)) %></li>
<% end %>
</ul>
</div>
produces the right result except all the object ids (i.e. #<Photo:0xXXXXXX>#) get added right before the </ul> and display in the html. I'm guessing since each time the block gets executed it returns the Photo object and that's why its rendering all the #<Photo:0x>s but i don't know how to STOP this from happening.
It's because you have:
<%= #album.photos.each do |photo| %>
instead of:
<% #album.photos.each do |photo| %>
Related
I have a view right now that renders an object on the page. The object is an Integration. On the Integration object I have attribute called filters. Filters are stored as an array. All I need to do is list out the filters of each integration below them in a list. Here is my code.
View
<% if #integrations.any? %>
<div class="configured-integrations">
<h3 class="heading-3">My Configured Integrations:</h3>
<ul class="integration-list integration-list--compact">
<%= render #integrations %>
</ul>
</div>
<% end %>
Screenshot
In the screenshot you can see that each of those elements are integrations. I need to list the filters of each integration below the title there.
Controller
def index
# Get the list of the user's integrations grouped first by provider then
# from oldest to newest."
#integrations = current_account.integrations
.order(type: :asc, created_at: :asc)
end
I hope this is clear enough. So recap: I need to list the filters on each integration below. I've already tried stuff like this #integrations.first.filters but that wont work because it's a static call. I need something like a list. Thank you
You can add another partial to render all filters which are associated with your Integration.
Create a partial file _show_filters.html.erb in your views
<% filters.each do |filter| %>
<li><%= filter %></li>
<% end %>
And render this partial while iterating through your #integration object like this.
<% if #integrations.any? %>
<div class="configured-integrations">
<h3 class="heading-3">My Configured Integrations:</h3>
<ul class="integration-list integration-list--compact">
<% #integrations.each do |integration| %>
<li>
<%= integration %>
<ul class="">
<%= render 'show_filters', filters: integration.filters %>
</ul>
</li>
<% end %>
</ul>
</div>
<% end %>
What you need to iterate through each integration, then <%= render integeration.filters %>
<% if #integrations.any? %>
<div class="configured-integrations">
<h3 class="heading-3">My Configured Integrations:</h3>
<ul class="integration-list integration-list--compact">
<% #integrations.each do |integration| %>
<li>
<%= integration %>
<ul class="">
<%= render integration.filters %>
</ul>
</li>
<% end %>
</ul>
</div>
<% end %>
You will have to update this code to make the partials work, but i hope this gets the idea across.
You can't use the shortcut <%= render #integrations %> here, because you want a subgroup inside #integrations. So you'll have to do it the long way.
I am using the instagram gem with rails. My problem is I am iterating over all of the data in the response with code like this:
<div>
<ul>
<%= #instagram.each do |pic| %>
<li><%= pic.name %></li>
<li><%= pic.latitude%></li>
<li><%= pic.longitude%></li>
<% end %>
</ul>
</div>
I am getting the desired results except for the end, where this gets printed in the browser:
[#<Hashie::Mash id="152201866" latitude=45.89172 longitude=-64.370013 name="Marshview Middle School">, ... etc...]
Any help trying to figure out how to ignore that last bit would be greatly appreciated.
Change
<%= #instagram.each do |pic| %>
to
<% #instagram.each do |pic| %>
= expects a return and prints the collection it iterates over.
I'm using the each do loop correctly, and not getting errors when looping an active record base. But for some reason, I am getting extra information at the end.
Here's what my controller looks like:
def archivedBlogs
#compsci = Compsci.all
#personalb = Personalb.all
end
And here is the code I have in the view page:
<div class="panel">
<ul>
<%= #compsci.each do |blog| %>
<li><%= blog.title %></li>
<% end %>
</ul>
</div>
But as you can see, I'm getting extra stuff at the end:
How can I fix it so that it only prints the blog titles?
Change
<%= #compsci.each do |blog| %>
to
<% #compsci.each do |blog| %>
Im trying to restrict the information being shown if data in not available.
In my view.rb file, I have something like this
<% if #content != nil %>
<div>
<h3>....</h3>
<% #content[0..3].each do |something| %>
<li> .... <li>
<% end %>
<% #content[4..5].each do |something| %>
<li> .... <li>
<% end %>
<% #content[5..11].each do |something| %>
<li> .... <li>
<% end %>
<div>
<% end %>
how ever even if content is nil, lines like content[4..5].each do |something| is being run and throwing errors for obvious reasons.
How do I get multiple blocks of html and ruby code to be ignored if condition isn't being met?
If the code <% content[4..5].each do |something| %> is executed, then #content IS NOT nil, there is no way ruby could be wrong about that.
BUT, if it is something like an empty array or a blank string then it will pass the test. In order to cover a wide range of possible "nil-like" values (nil, empty, blank...) use:
<% unless #content.blank? %>
And let me know if it helps.
you can use:
<% unless #content.nil? %>
#true
<%else%>
#false
<%end%>
Are you sure #content is surely nil? Please be aware that an object can be empty while it is not nil.
Eg:
#content=[]
or
#content={}
will make hold true for #content!=nil since it is not actually not nil. A reference is nil if it is never instantiated before.
If you are storing data to #content via a database query like Modelname,All , then you will get an empty array instead of a null (nil) object.
Also, if you are recieving #content from user as request parameter, then if the GET request contains name of the parameter but not any value, then again #content is empty but not nil.
ie http://yourdomain.com/somecontroller/index?name=10&age=
will have params[:age] as empty nil.
Solution:
<% if #content.to_s.empty? != true %>
<div>
<h3>....</h3>
<% content[0..3].each do |something| %>
<li> .... <li>
<% end %>
<% content[4..5].each do |something| %>
<li> .... <li>
<% end %>
<% content[5..11].each do |something| %>
<li> .... <li>
<% end %>
<div>
<% end %>
So being new to rails I seem to be stuck on creating a loop within a loop to process the information.
I am getting:
can't convert Symbol into Integer line #11
The line in question is:
Host <%= servicedetails[:hostidn] %> - <%= servicedetails[:status] %>
And here is the full version below. Being new Im clueless and open to suggestions.
<div>
<% #service_hash[:service_list].each do |servicesinfo| %>
<ul>
<li>
<ul>
<li>
<h2><%= servicesinfo[:service_name] %><h2>
</li>
<% servicesinfo.each do |servicedetails| %>
<li>
Host <%= servicedetails[:hostidn] %> - <%= servicedetails[:status] %>
</li>
<% end %>
</ul>
</li>
</ul>
<% end %>
</div>
the JSON equivalent of this hash is
{"status":"successful","service_list":[{"service_name":"oozie","status":"RUNNING","status_message":"Running Master Service","host":"1"},{"service_name":"single-namenode","status":"RUNNING","status_message":"Running Service","host":"1"},{"service_name":"single-database","status":"RUNNING","status_message":"Running Service","host":"1"},{"service_name":"datanode","status":"RUNNING","status_message":"Running Service","host":"1"},{"service_name":"secondarynamenode","status":"RUNNING","status_message":"Running Service","host":"1"},{"service_name":"web","status":"DEAD","status_message":"Running Master Service","host":"1"},{"service_name":"tasktracker","status":"RUNNING","status_message":"Running Service","host":"1"},{"service_name":"jobtracker","status":"RUNNING","status_message":"Running Master Service","host":"1"}]}
You're already iterating over the array of hashes with service info (renamed to make sense):
<% #service_hash[:service_list].each do |service_info| %>
...
<% end %>
Iterating over service_info would return [key, value] pairs--likely not what you want.
Access the information from service_info directly, as you already do with :name
<%= service_info[:host] %> - <%= service_info[:status] %>
I don't see anything called :hostidn in that hash, just :host; not sure if that's a typo, or if you're expecting additional data not shown.