Say if I have a set of objects contained in #set. Each of these objects has a description method which will return some text that I want to display on individual pages. How do I use will_paginate to paginate this?
The examples I've seen so far such as:
#articles = Article.paginate :page => params[:page]
look like they are referring to all Article objects.
Assuming your model is called SomeObject, the will_paginate syntax is similar to that of ActiveRecord's .find():
#set = SomeObject.paginate(:page => params[:page],
:per_page => 20,
:order => 'created_at DESC',
:conditions => { :foo => 'bar' })
Check the documentation for more.
To do do the call in active record you just use .paginate instead of .find and pass the necessary arguments, the gem is pretty well documented on how to use it. Installation docs, and usage examples are in the Readme. The examples might not be using your #set but you use it the same way.
Edit: Apparently those links were wrong, The github repo for will_paginate has that wiki and readme file. Do a search on github for it as I seem to be having epic link fail at the moment.
Related
I'm trying to integrate Tire into my site and I'm having difficulty with pagination. I've tried paginating the results outside of the context of Tire and will_paginate is working on that Array. However, when I try will_paginate within the context of Tire I'm having one large problem.
Will_Paginate will display the correct number of pages with consideration of :per_page but when I click on that page the results are not loaded, rather they are the same as on the first page. The page number is highlighted in the will_paginate navigation.
#results.inspect yields this:
#<Tire::Search::Search:0x007f88ab9153d0 #indices=["deja-set-development"], #types=[], #options={:load=>true, :page=>1, :per_page=>2}, #path="/deja-set-development/_search", #query=#<Tire::Search::Query:0x007f88ab915088 #value={:query_string=>{:query=>"oh"}}>, #facets={"type"=>{:terms=>{:field=>:_type, :size=>10, :all_terms=>false}}}>
Here is where I call will_paginate:
= will_paginate #search_results.results, params
Here is where I iterate through the results
#search_results.results.each
Does anyone have any thoughts?
Edit ---
I'm not sure what is going on, but I did this and it is working.
#search_results = #search_results.paginate(:page => params[:page], :per_page => 5)
Please see the integration test in Tire, and make sure you're passing all options properly.
So to clarify, I've attached my github correspondence with #karmi here.
https://github.com/karmi/tire/issues/627#issuecomment-13449368
I was using Tire.search as opposed to searching by model. As #karmi notes, at the moment :per_page and :page are not supported with Tire.
Here is how I solved this:
#search_results = Tire.search [:index1, :index2, :index3], :load => true, :from => from, :size => size do
query do
string q, :default_operator => 'AND', :fields => [:name1, :name2]
end
end
I ended up having to spin my own small pagination system to increment 'size' and 'from'. Here's the elasticsearch link on the topic.
http://www.elasticsearch.org/guide/reference/api/search/from-size.html
You're able to still access
= #search_results.results.total_entries/next_page/previous_page
which helps with pagination.
Thank you again #karmi.
I am currently developing a Ruby on Rails blog. I have my blog posts show up on the main page, however, I would like to list the posts 5 at a time, so that my frontpage doesn't go on forever and my blog will look much cleaner.
Let me know if you can help. Much appreciated.
Looks like you need a pagination solution - consider using kaminari or will_paginate ( https://github.com/amatsuda/kaminari, https://github.com/mislav/will_paginate/wiki )
And if you need an endless page, there is a nice screencast about that: http://railscasts.com/episodes/114-endless-page
For example, if using will_paginate for pagination, you just call paginate method at end of line your query inside controller, for example inside your controller
def index
#blogs = Blog.all.paginate(:page => params[:page], :per_page => 5)
end
from your view, just simply put:
will_paginate #blogs
at specify location, to show pagination.
If I understand right, you want to limit the number of post on the home page . Then you should do like
Model.find(:all, :limit => 5, :order=> 'created_at desc')
you can remove the order if you don't need it. If you need to make pagination take a look at will_paginate
I'm using the latest version of will_paginate with rails 3. I'd like to use out_of_bounds? to set the current page to the last page if the page parameter is higher than the last page. I found a way to do it like this:
people = People.all.paginate :page => params[:page], :per_page => 20
#people = people.paginate(:page => (people.out_of_bounds? ? people.total_pages : params[:page))
The problem with this is that I have to call paginate twice. The first time to create a WillPaginate::Collection in order to use the out_of_bounds? and total_pages methods, and the second time to actually set the current page. I also need to do this with more actions so it's getting kinda out of hand. I can't use a before_filter or an after_filter, either (I don't think?). Is there a better way to achieve this?
I don't know the best solution, but at least you can do the check before the second call to the method (I suppose that in most of the cases, the page parameter will be ok, so you wont have to call paginate twice):
people = People.all.paginate :page => params[:page], :per_page => 20
#people = people.out_of_bounds? ? people.paginate(:page => people.total_pages) : people
I have a rails app and I'm trying to set up pagination for a view of the Essays class. I'm new to rails... so I can do this for ALL of them, but I only want certain ones to be in this list (where all the essays are contained in Essay.find(Ranking.where(:user_id=>current_user.id).essay_id)).
home.html.erb contains (among other things):
`<%= will_paginate #essays%>
<ul class="users">
<%= render #essays %>
</ul>
<%= will_paginate #essays%>`
in the Pages Controller:
def home
#...
#essays = Essay.paginate(:page => params[:page])
end
I tried adding #essays=Essay.find(Ranking.where(:user_id=>current_user.id).essay_id) before the #essays=Essay.paginate(:page => params[:page]) but the method essay_id for the Ranking class is not available here. How do I get around this? Thanks!
This should work:
Essay.joins(:rankings)
.where(:rankings => {:user_id => current_user.id})
.paginate(:page => params[:page])
While this can be done with will_paginate. I've had some issues with this plugin for Rails 3. A much smoother solution, in my opinion, was to use another pagination plugin called Kaminari.
Assuming, essay_id is passed as a param, you could try:
#ranking = Ranking.where(:user_id => current_user.id, :essay_id => params[:essay_id]).page(params[:page]).per(10)
Or depending on your logic. If the essay object has already been identified in your controller:
#essay = Essay.find(1234)
#ranking = Ranking.where(:user_id => current_user.id, :essay_id => #essay.id).page(params[:page]).per(10)
And then, in your view:
<%= paginate #ranking %>
Even better, to get you started on Kaminari, you can view this rails cast. As noted from the rails cast:
The first-choice gem for pagination in
Rails is will_paginate, but the
currently released version doesn’t
support Rails 3. There is a
pre-release version available that
works but it hasn’t been updated for
several months. If will_paginate is no
longer in active development are there
any other gems we could use?
One alternative is Kaminari. This
seems to provide a cleaner
implementation of pagination and
offers several improved features, too,
so let’s try it in our application
instead.
Hope that helps!
Simply chain paginate method after find method:
#essays=Essay.find(Ranking.where(:user_id=>current_user.id).essay_id).paginate(:page => params[:page])
Hi people I'm having a problem with one search that I'm making in one of my projects. I am new using Sphinx and the problem is when I make a search like = "ipad" it work perfect but when I put "ipa" the full text search seems no to work the way I want cause I'm not receiving anything back.
my_variable = self.search searchTxt, :match_mode => :any, :sort_mode => :extended, :order => sortType, :page => page, :per_page => perPage
Am I doing something wrong with the search?
I think there is some additional configuration necessary to search with wildcards, as explained in the documentation.