I am using the restforce gem and I have had success pulling the restforce collection and rendering the first user in the collection.
#users = client.query("select Id,Name from User where Id != ''")
# => #<Restforce::Collection >
#user = #users.first
I am stuck on what seems to be a pretty basic problem. I cannot seem to create a view with a partial to iterate through the collection and show a list of all the users my query has returned. See view below:
<ul class="users">
<%= render 'user', collection: #users %>
</ul>
See partial below:
<%= #user.Name %>
Not a lot going on here, just looking for a basic way to show a list of the user's names.
You could just iterate the collection.
<% #users.each do |user| %>
<ul class="users">
<li><%= user.Name %></li>
</ul>
<% end %>
If you really need to, you can still use a partial like <%= render 'user', user: user %>
Related
I am trying to create a compare functionality for an index of schools. Currently I am using the following code which takes any checked school and adds it to the school_ids[] in the params.
In my gemfile:
gem 'will_paginate'
In my school's index.html.erb:
<%= form_tag compare_path, :method => 'get' do %>
<%= submit_tag "Compare" %>
<ul>
<% #schools.each do |school| %>
<li>
<%= check_box_tag'school_ids[]', school.id %>
<%= link_to school.name, school %><br>
<%= school.city %>, <%= school.state %>
</li>
<% end %>
</ul>
<% end %>
In my school controller I have:
def compare
#schools = School.find(params[:school_ids])
end
This works great as long as all of the check schools are on the same page. But since I'm using will_paginate to paginate the list of schools, if I change pages, the check boxes do not persist. I'm assuming I need to save to sessions somehow.
Do you mean you want to be able to add a check mark to a school A on page 1 of the index, go to page 2 of the index and add another check mark for school B, then submit the compare form and see schools A and B? If that's the case, then you're correct, you need to get the check boxes into the session. Attach a js click event, like
$('.checkbox_class').click(function(){
$.post('update_session_method', { school_id: $(this).val(), checked: $(this).is(:checked)]);
});
then add a controller method
def update_session_method
session[:school_ids] ||= []
if params[:checked]
session[:school_ids] << params[:school_id]
else
session[:school_ids].delete(params[:school_id])
end
end
then your compare method
def compare
#schools = School.find(params[:school_ids].merge(session[:school_ids] || []))
end
I've been stumped as to why my rails app is rendering the wrong partial. I have two partials, each related to a different controller (invitations and guests controllers). One partial lists the number of invitations sent out to users and the second partial lists those users who have confirmed their invitation. In addition, the second partial also allows one to see a simple profile of the confirmed guests.
What is happening is that when I visit the link related to the guests controller events/1/guests/, I expect to see the partial related to the guest profile. Instead, the partial related to the invitations controller is rendered. Both the invitations and guests controllers are nested resources of events.
Below is the code that I have been working with. Thanks!
Routes
resources :events, only: [:new, :show, :create] do
resources :invitations, only: [:new, :create, :show]
resources :guests, only: :show
end
match '/events/:id/guests', to: 'guests#show'
Guests controller
def show
#event = Event.find_by_id(params[:id])
#guestlist = #event.invitations.where(accepted: true)
end
views/guests/show.html.erb
<% provide(:title, #event.eventname + " Guest List") %>
<h1> Guest list for <%= #event.eventname %> </h1>
<% if #event.invitations.any? %>
<%= render #guestlist %>
<% end %>
views/guests/_guestlist.html.erb
<li>
<%= guestlist.name %> | <%= guestlist.occupation %> |
<%= guestlist.interests %>
</li>
Instead, the following partial is being rendered:
views/invitations/_invitation.html.erb
<li>
<%= invitation.name %> | <%= invitation.email %> |
<% if invitation.accepted == true %> <%= "Confirmed" %> <% else %> <%= "Pending" %> <% end %>
</li>
The following snippet depicts the correct way to invoke your partial:
# app/views/guests/show.html.erb
<%= render :partial => 'guests/guestlist', :locals => {:guestlist => #guestlist} %>
Since you need access to the #guestlist instance variable in your partial, you'll need to pass it as a local. Then, in your partial, guestlist will be available as a local variable.
Then, within your partial, you'll need to iterate over the members of your guestlist:
# app/views/guests/_guestlist.html.erb
<% guestlist.each do |guest| %>
<li>
<%= guest.name %> | <%= guest.occupation %> | <%= guest.interests %>
</li>
<% end %>
UPDATE:
The reason the OP's original invocation of the partial rendered the invitation partial is that #guestlist is actually comprised of Invitation objects, and thus, the <%= render #guestlist %> method was actually looking for a partial named invitation. From the canonical Rails guides:
There is also a shorthand for this. Assuming #products is a collection
of product instances, you can simply write this in the index.html.erb
to produce the same result:
<h1>Products</h1>
<%= render #products %>
Rails determines the name of the partial to use by looking at the
model name in the collection.
Because of this, you need to explicitly declare the name of the partial you want to use, otherwise ActionView will use the invitation partial by default.
If #guestlist is an object of type Guest, then it would by default render _guest.html.erb.
So, you can try This
<%= render 'guestlist' %>
Variable #guestlist would be automatically available in the partial, so no need to pass it in locals.
Hope this works.
In your show action, you have defined
#guestlist = #event.invitations.where(accepted: true) # it returns array of obejects or records
Now, Please have a try with the following code
views/guests/show.html.erb
<% unless #guestlist.blank? %>
<%= render "/guests/guestlist" %>
<% end %>
views/guests/_guestlist.html.erb
<% #guestlist.each do |guestlist| %>
<li>
<%= guestlist.name %> | <%= guestlist.occupation %> |
<%= guestlist.interests %>
</li>
<% end %>
I have some associations that is connected to the user
User model
has_many :lists
has_many :ideas
How do I display the lists and ideas in the user's page?
In my users controller, show method
def show
#user = User.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #user }
end
end
In my show.html.erb
I can only display user name, i.e.:
<%= #user.username %>
I'm trying to see what I need to put in the show action so I can do something like
#user.lists.name, or #user.ideas.name
I'm new to rails still and I'm trying to understand how to link everything together with user?
Hopefully this is enough information?
Thanks
Those associations returns collections, an array of many objects. So you must iterate though all the association records.
<p>Name: <%= #user.username %></p>
<p>Ideas:</p>
<ul>
<% #user.ideas.each do |idea| %>
<li><%= idea.name %></li>
<% end %>
</ul>
<p>Lists:</p>
<ul>
<% #user.lists.each do |list| %>
<li><%= list.name %></li>
<% end %>
</ul>
Which might render something like:
<p>Name: Andrew</p>
<p>Ideas:</p>
<ul>
<li>Light Bulb</li>
<li>Cotton Gin</li>
<li>Smokeless Ashtray</li>
</ul>
<p>Lists:</p>
<ul>
<li>Chores</li>
<li>Shopping</li>
<li>Wishlist</li>
</ul>
A question that I hope you can answer for a Q&A app. Still very new with Rails. It should be fairly simple but there is a small issue that I run into whenever I am trying to create a list of links to show up that point to a RESTful route from a loop.
Here's the code for the controller:
users_controller.rb
def list
#user = User.find(params[:id])
#users = User.find(:all, :select => :name)
end
def quiz
#user = User.find(params[:id])
#users = User.find(:all, :select => :name)
end
Here's the code for the view:
<% if current_user.admin? %>
<ul>
<%- #users.each do |link| %>
<li><%= link_to link.name, quiz_user_path(#user, #quiz) %></li>
<% end %>
</ul>
<% end %>
Here's the code for the route:
resources :users do
get 'quiz', :on => :member
end
What I want to do is generate individual links based on the name of the users and then link to the quiz page for that specific user. I'm pretty sure that something needs to be changed for the code in my view. Right now, all I'm getting is a link that all points to the current user which in this case is user 4. (http://localhost:3000/users/4/quiz)
Thanks for any quick tips to solve this.
Currently you are using the same #user instance variable for each link. Instead you need to use the variable set in your loop. The code below should work as expected:
<% if current_user.admin? %>
<ul>
<%- #users.each do |user| %>
<li><%= link_to user.name, quiz_user_path(user) %></li>
<% end %>
</ul>
<% end %>
I also renamed the variable from link to user, for clarity, since your iterating through users not links.
It's because in your current route map quiz_user_path needs only one variable. Try to remove #quiz.
At the moment I try to do following:
I created several partials (i.e. _show_signature.html.erb) for my user.
Now I want to show them on clicking a link.
In my user controller, I created a new action:
def show_signature
#is_on_show_signature = true
end
def show_information
#is_on_show_information = true
end
on my user show.html.erb i coded this:
<% if #is_on_show_information %>
<%= render :partial => 'show_information' %>
<% elsif #is_on_show_signature %>
<%= render :partial => 'show_signature' %>
<% end %>
and in my "navigationbar" i wrote:
<ul>
<li class="profile-tab">
<%= link_to 'Information', show_information_path %>
</li>
<li class="profile-tab">
<%= link_to 'Signature', show_signature_path %>
</li>
</ul>
In my routes.rb I wrote:
map.show_information '/user-information', :controller => 'user', :action => 'show_information'
map.show_signature '/user-signature', :controller => 'user', :action => 'show_signature'
now my problem:
clicking on my "information" link will redirect me to http://localhost:3000/user-information (cause I told him this path in routes.rb - I think) and I get an error:
uninitialized constant UserController
But that's not what I want... My user show path is something like:
http://localhost:3000/users/2-loginname
(by coding
def to_param
"#{id}-#{login.downcase.gsub(/[^[:alnum:]]/,'-')}".gsub(/-{2,}/,'-')
end
in my user model)
I want to link to somethink like http://localhost:3000/users/2-test/user-information.
Any ideas how it will work? Any ideas why I get this error?
As far as Rails conventions go, the model itself is singular (User) but the table (users) and controller (UsersController) are both pluralized. This can cause a significant amount of confusion at first, and even after years of working with Rails I still make the mistake of trying things like 'user = Users.first' which is, of course, not valid, as often you get to thinking about table names instead of class names.
Also, for toggling the display of elements on a page, you probably want to use the link_to_remote method which uses AJAX for updates instead of a page refresh. If you're okay with a full page refresh, those actions will need to redirect_to something, such as the page referrer, or you will get a blank page or error since the page template does not exist.
Typically what you do is:
<ul>
<li class="profile-tab">
<%= link_to_remote 'Information', show_information_path %>
</li>
<li class="profile-tab">
<%= link_to_remote 'Signature', show_signature_path %>
</li>
</ul>
Then each action is as you have specified, however, the page template show_information.rjs would look like:
page.replace_html('extra_information', :partial => 'show_information')
Keep in mind you will need to have a placeholder to receive the partial contents, so simply wrap your optional sections in an element with a specific ID:
<div id="extra_information">
<% if #is_on_show_information %>
<%= render :partial => 'show_information' %>
<% elsif #is_on_show_signature %>
<%= render :partial => 'show_signature' %>
<% end %>
</div>