pagination | 易学教程

How to make user-adjustaple pagination in Django?

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问题 I have pagination, html: {% extends 'base.html' %} {% load pagination_tags %} {% block title %}NewsLine{% endblock title %} {% load humanize %} {% block content %} {% autopaginate news news_on_page %} {% paginate %} News on page: <input type="submit" value="10" /> <input type="submit" value="20" /> <input type="submit" value="50" /> <div class="container mt-3"> <div class="row my-5"> <div class="col-11"> <p>News overall {{ paginator.count }}</p> <p>Number of pages {{ paginator.num_pages }}</p

Refresh pagination data in UITableView

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问题 I have implemented pagination in UITableView with WillDisplay method. Pagination process is working fine but if I need to reload a list on button click, then data is appending in the list. How to work around with this ? func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) { if (indexPath.row + 1 == playlistViewModel.numberOfRowsInSection()) { if playlistViewModel.isReload != false { pageIncrement += 1 playlistViewModel.playListingApi

Pagination with mongoose and nestjs

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问题 Im trying to use mongoose paginate to paginate through an array of values. class subNotes { @Prop() Note: string; @Prop() Date: Date; } @Schema() class Travel extends Document { @Prop() Country: string; @Prop() Recommendation: string; @Prop() Level: number; @Prop() LevelDescr: string; @Prop() Date: Date; @Prop() Notes: [subNotes]; } export const TravelSchema = SchemaFactory.createForClass(Travel); TravelSchema.plugin(mongoosePaginate); So subnotes are updated weekly and will have lots of

Table pagination with json data

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问题 I have added pagination for json data table. How to add 1 2 3 in between previous next buttons for pagination Complete code https://jsfiddle.net/py9rvfcp/ $(document).ready(function(){ var table = $('#myTable'); var max_size=userDetails.length; var sta = 0; var elements_per_page = 3; var limit = elements_per_page; goFun(sta,limit); function goFun(sta,limit){ for(var i=sta;i<limit;i++){ var tab='<tr><td>'+userDetails[i].Username+"\n"+'</td><td>'+userDetails[i].Firstname+"\n"+'</td><td>'

CakePHP 3.x - How to pass pagination configuration directly instead of using the controller `$paginate` property?

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问题 The below code works: // Somewhere in the Controller public $paginate = [ 'maxLimit'=>2 ]; // In the method: $query=$this->Model->find('all')->where(....); $this->set('results',$this->paginate($query)); However, I do not want to specify $paginate as public in the controller. I would rather not specify it at all. I tried to move maxLimit setting to the method but I'm doing it incorrectly. How can I change the below code? $query=$this->Model->find('all')->where(....); $this->set('results',$this

How to Show native ads in listview.builder in flutter with pagination?

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问题 I am using below code to retrieve list in flutter application using pagination with firestore as database, which working fine. I am referring flutter_native_admob dependency for the native ads. but I am not able to get the idea how I can implement it in a listview.builder and at the same time I need to implement the pagination. Like in instagram, as after certain number of posts, the native ad shows up, I need to show the add in similar fashion. How is that possible? _getProducts() async {

How to turn a list into a paginated JSON response for REST?

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问题 I'm new to Django REST Framework and I faced a problem. I'm building a backend for a social app. The task is to return a paginated JSON response to client. In the docs I only found how to do that for model instances, but what I have is a list: [368625, 507694, 687854, 765213, 778491, 1004752, 1024781, 1303354, 1311339, 1407238, 1506842, 1530012, 1797981, 2113318, 2179297, 2312363, 2361973, 2610241, 3005224, 3252169, 3291575, 3333882, 3486264, 3860625, 3964299, 3968863, 4299124, 4907284,

How can I use Jinja2 to group articles by date and paginate in Pelican?

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问题 I'm using the Pelican static site generator to create a high-volume blog. Pelican themes paginate the index page, showing a list of post titles and summaries, sorting the posts by date. Here's an example of how this is accomplished, from the bootstrap theme: {% if articles %} {% for article in (articles_page.object_list if articles_page else articles) %} <div class='article'> <h2>{{ article.title }}</h2> <div class="well small">{% include "metadata.html" %}</div> <div class="summary">{{

How can I web scraping without the problem of null website in R?

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问题 I need to extract information about species and I write the following code. However, I have a problem with some absent species. How is it possible to avoid this problem. Q<-c("rvest","stringr","tidyverse","jsonlite") lapply(Q,require,character.only=TRUE) #This part was obtained by pagination that I not provided to have a short code sp1<-as.matrix(c("https://www.gulfbase.org/species/Acanthilia-intermedia", "https://www.gulfbase.org/species/Achelous-floridanus", "https://www.gulfbase.org

API 分页设计与实现探讨

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对于设计和实现 API 来说，当结果集包含成千上万条记录时，返回一个查询的所有结果可能是一个挑战，它给服务器、客户端和网络带来了不必要的压力，于是就有了分页的功能。通常我们通过一个 offset 偏移量或者页码来进行分页，然后通过 API 实现类似请求： GET /api/products?page= 10 { "items" : [.. .100 products]} 如果要继续访问后续数据，则修改分页参数即可。 GET /api/products?page= 11 { "items" : [...another 100 products]} 在使用 offset 的情况下，通常使用 ?offset=1000 和 ?offset=1100 这种大家都熟悉的方法。它要么直接调用 OFFSET 1000 LIMIT 100 的 SQL 查询数据库，要么使用 LIMIT 乘以 page 作为查询参数。无论如何，这是一个次优的解决方案，因为无论哪种数据库都要跳过前面 offset 指定的 1000 行。而跳过额外的offset，不管是 PostgreSQL，ElasticSearch还是 MongoDB 都存在额外开销，数据库需要对它们进行排序，计数，然后将前面不用的数据扔掉。粉丝福利：手撸了 50 个 Java 项目实战后，我超神了！这是一种低效的方法，但由于它使用简单