paginator

Error with paginating the exact number of records as json result in django

由 六月ゝ 毕业季﹏ 提交于 2019-12-11 16:49:39
问题 My problem is that my returning json is not the expecting one based on the limit that I have given to my paginator. For example, when I am giving the limit 11 to define the number of my returning results per page, after the request the paginator returns only 10. This happens when I am requesting records above 10. Below 10 the json result is right. my view class ProductSerialNumbersListJSon(LoginRequiredMixin,BaseDatatableView): # my model model = ProductSerialNumbers columns = ['snumber' ,

datatable paginator setFirst not working

由 我怕爱的太早我们不能终老 提交于 2019-12-11 15:58:49
问题 I have the following problem: In one of my sites I have a Datatable . If i click on an Entry I am getting to a different page. If i go back to the page before I want to have the Datatable be on the same page it was when I clicked the row. I am able to set the page with the page event. I am also able to get inside a method where I would like to set the page. The code inside looks like this: final DataTable d = (DataTable) FacesContext.getCurrentInstance() .getViewRoot().findComponent("form

How do I paginate a collection or custom query into API json in Laravel?

由 梦想与她 提交于 2019-12-11 15:17:38
问题 I have a complex query that is not based on any specific model table that I want to paginate output for. However laravel's built in pagination relies on models and tables. How can I paginate a collection and have the output match up with laravel's built in pagination output format? 回答1: I keep this in an app\Core\Helpers class so that I can call them from anywhere as \App\Core\Helpers::makePaginatorForCollection($query_results). The most likely place to use this is the last line of a

Faster Django Admin Paginator: Cannot get this Django snippet to work

由 折月煮酒 提交于 2019-12-11 04:23:42
问题 I found this snippet for improving the performance of large database table queries in Django admin lists: https://djangosnippets.org/snippets/2593/ There are some issues about it when using it with Django 1.10, which are already discussed in my previous question here: How to speed up Django's admin pages with PostgreSQL count estimates? Particularly, _count needs to renamed to count and query_set to queryset . Here's a short version of the relevant part of the snippet: from django.core

How to speed up Django's admin pages with PostgreSQL count estimates?

由 我们两清 提交于 2019-12-10 17:46:01
问题 It's quite known that Django's admin list views are getting rather slow when the database tables have lots of rows. That's because the Django paginator uses by default a (slow) PostgreSQL COUNT query. As estimate would be fine for us and it's much faster, e.g.: SELECT reltuples FROM pg_class WHERE relname = "my_table_name" There is snippet available to fix this issue, but it's unclear to me how to actually use it: https://djangosnippets.org/snippets/2593/ Also, the snippet is not supposed to

Django中扩展Paginator实现分页

由 耗尽温柔 提交于 2019-12-10 15:58:07
Django中已经实现了很多功能，基本上只要我们需要的功能，都能够找到相应的包。要在Django中实现分页显示，只需要简单地使用Paginator就可以实现了。 首先，需要在应用的views.py中添加如下引用： from django.core.paginator import Paginator from django.core.paginator import PageNotAnInteger from django.core.paginator import EmptyPage 然后，在需要使用分页的view函数中，添加如下代码： blogs = Blog.objects.all() # Get released blogs paginator = Paginator(blogs, 8) try: blogs = paginator.page(page_num) except PageNotAnInteger: blogs = paginator.page(1) except EmptyPage: blogs = paginator.page(paginator.num_pages) 以上代码中，page_num是指的当前需要显示的页，要将当前页的内容显示出来，就跟使用原对象一样，基本没有什么区别，我们还是只需要像如下在模板中使用： {% for blog in blogs

p:dataTable with paginator: how to use p:printer to print all rows without paginator

由 孤街醉人 提交于 2019-12-08 07:26:29
问题 In a <p:dataTable> with paginator, I need to print all the pages. When I use <p:printer> and give the datatable as target, it only prints first page with pagination controls. How can I print all the rows of the table with <p:printer> ? 回答1: Ok, I was actually able to achieve the desired behavior but in a very unpleasant way. First of all, it seems that p:printer just takes a DOM element by an id from a xhtml page and passes it to a printer. So, to be able to print a full table it first should

How to customize mat-paginator in angular material

由 ▼魔方 西西 提交于 2019-12-07 12:08:19
问题 I want to customize mat-paginator .By default i am getting paginator like this which have given in below link https://material.angular.io/components/paginator/overview. But i want pagination like below image . How can i do this using mat-paginator Can anyone please help me with this. 回答1: I thought this would be a good opportunity to see exactly how far I could go with directive DOM manipulation of a material library component... feel like I did pretty good but... I have come to the

Cakephp 3.x Sorting of another model is not working

由 前提是你 提交于 2019-12-07 02:30:16
问题 I have two models Users & Roles Here "Roles hasMany Users" and "Users belongsTo Roles" When the user saved we're also asking user's role & record saved. Problem : I have list of users with column firstname, lastname,roles. Each & Every column has sorting but on roles sorting is not working. Role Table contains "name" field for Role name. I have referred below link but it doesn't working for me. Pagination Sort in Cakephp 3.x UsersController: public function index() { $this->paginate = [

How to customize mat-paginator in angular material

由 筅森魡賤 提交于 2019-12-05 19:40:36
I want to customize mat-paginator .By default i am getting paginator like this which have given in below link https://material.angular.io/components/paginator/overview . But i want pagination like below image . How can i do this using mat-paginator Can anyone please help me with this. I thought this would be a good opportunity to see exactly how far I could go with directive DOM manipulation of a material library component... feel like I did pretty good but... I have come to the conclusion this will not be possible... it was a good learning experience none the less. there may be others more
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