Fix count items when is loading

src/app/app.module.ts

@@ -6,6 +6,7 @@ import {WordpressService} from './wordpress.service';
 
 import { AppComponent } from './app.component';
 import { GridComponent } from './grid/grid.component';
+import {SlicePipe } from '@angular/common';
 
 
 @NgModule({
@@ -19,6 +20,7 @@ import { GridComponent } from './grid/grid.component';
   ],
   providers: [
     WordpressService,
+    SlicePipe,
   ],
   bootstrap: [AppComponent]
 })

src/app/geojson.service.ts

@@ -2,13 +2,15 @@ import { Injectable } from '@angular/core';
 import { HttpClient,HttpResponse } from '@angular/common/http';
 import { Observable,of } from 'rxjs';
 import soinumapa from "../assets/geojson/soinumapa.json";
+import { SlicePipe } from "@angular/common";
 
 @Injectable({
   providedIn: 'root'
 })
 export class GeojsonService {
 
-  constructor(private http: HttpClient) {
+  constructor(private http: HttpClient,
+    private slicePipe:SlicePipe) {
     this.items = soinumapa.features as JSON
     this.total_pages
     let pages = Object.keys(this.items).length/this.per_page
@@ -25,9 +27,10 @@ export class GeojsonService {
 
   getItems(feed:any):any {
     let page = feed.page
-    let start = (page-1)*this.per_page
+    let start:number = (page-1)*this.per_page
-    let end = (page-1)*this.per_page+this.per_page
+    let end:number = (page-1)*this.per_page+this.per_page
-    return this.items.slice( start, end)
+    return this.slicePipe.transform(this.items, start, end);
+    // return a.slice( start, end)
   }
 
   getCount():any {

src/app/grid/grid.component.ts

@@ -19,11 +19,11 @@ export class GridComponent implements OnInit {
   posts$:Observable<any[]>;
   items:Item[]=[];
   feeds = [
-    {type:"wordpress", categories:"https://www.gransassolagaich.it/wp-json/wp/v2/categories", url:"https://www.gransassolagaich.it/wp-json/wp/v2/posts?_embed",slug:'bambun',name:"Bambun",status:0,per_page:10,page:1,total_pages:0},
+    {type:"wordpress", categories:"https://www.gransassolagaich.it/wp-json/wp/v2/categories", url:"https://www.gransassolagaich.it/wp-json/wp/v2/posts?_embed",slug:'bambun',name:"Bambun",status:-1,per_page:10,page:1,total_pages:0},
-    {type:"wordpress", categories:"https://www.archive.binauralmedia.org/wp-json/wp/v2/categories", url:"https://www.archive.binauralmedia.org/wp-json/wp/v2/avada_portfolio?_embed",slug:'binauralnodar',name:"Binaural",status:0,per_page:10,page:1,total_pages:0},
+    {type:"wordpress", categories:"https://www.archive.binauralmedia.org/wp-json/wp/v2/categories", url:"https://www.archive.binauralmedia.org/wp-json/wp/v2/avada_portfolio?_embed",slug:'binauralnodar',name:"Binaural",status:-1,per_page:10,page:1,total_pages:0},
     // {type:"wordpress", url:"http://backend.industriapaisaia.eus/wp-json/wp/v2/posts?_embed",name:"Local",status:0},
     {type:"geojson", categories:"",url:"http://www.soinumapa.net/geojson/",name:"Audiolab",slug:"soinumapa",status:0,per_page:10,page:1,total_pages:0},
-    {type:"omeka", categories:"http://oralitat", url:"https://tramontana.audio-lab.org/oralitatdegasconha/",name:"Oralitat de Gasconha",slug:'oralitatgasconha',status:0,per_page:10,page:1,total_pages:0},
+    {type:"omeka", categories:"http://oralitat", url:"https://tramontana.audio-lab.org/oralitatdegasconha/",name:"Oralitat de Gasconha",slug:'oralitatgasconha',status:-1,per_page:10,page:1,total_pages:0},
   ]
   // feedsCategories = [
   //   {type:"wordpress", url:"https://www.gransassolagaich.it/wp-json/wp/v2/categories",name:"Bambun",status:0},
@@ -89,6 +89,7 @@ export class GridComponent implements OnInit {
     // nextpage
     this.feeds.map(
       (feed) => {
+        if (feed.status==0) return // is loading
         if (feed.page<=feed.total_pages) {
           feed.page++;
           this.loadFeed(feed)
@@ -136,11 +137,13 @@ export class GridComponent implements OnInit {
         )
     }
     else if (feed.type==="geojson") {
+      feed.status = 0
       let features = this.gService.getItems(feed)
-      feed.total_pages = this.gService.getTotalPages()
+      if (feed.total_pages==0) {
-      let numItems = this.gService.getCount()
+        feed.total_pages = this.gService.getTotalPages()
+        let numItems = this.gService.getCount()
       this.countItems+=numItems
-      feed.status = 1
+      }
       features.map(
         (feature) => {
           let i = feature.properties
@@ -158,9 +161,11 @@ export class GridComponent implements OnInit {
           }
         }
       )
+      feed.status = 1
     }
     /** omeka **/
     else if (feed.type==="omeka") {
+      feed.status = 0
       this.oService.getItems(feed)
         .subscribe(
           (res)=> {