[Angular 2] Totaux d'un tableau

1 pièce(s) jointe(s)

Bonjour,

Je veux calculer des totaux d'un tableau obtenu avec *ngFor d'angular 4. Je me demande s'il n'y a pas un truc sur angular 4 qui me permet de le faire sans forcement passé par une lib externe.

Voici un extrait du tableau.

Pièce jointe 320986

Voici le template HTML.

Code:

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<div>
    <h2>
        <span jhiTranslate="appTransfetApp.transaction.home.title">Transactions</span>
        <button class="btn btn-primary float-right create-transaction" [routerLink]="['/', { outlets: { popup: ['transaction-new'] } }]">
            <span class="fa fa-plus"></span>
            <span  jhiTranslate="appTransfetApp.transaction.home.createLabel">
            Create new Transaction
            </span>
        </button>
    </h2>
    <jhi-alert></jhi-alert>
    <div class="row">
    </div>
    <br/>
    <div class="" *ngIf="transactions">
        <table class="table table-striped table-bordered table-responsive">
            <thead>
                <tr>
                    <th colspan="5"></th>
                    <th [colSpan]="unities?.length" class="text-center"><span>Entré</span></th>                   
                    <th [colSpan]="unities?.length" class="text-center"><span >Sortie</span></th>
                    <th [colSpan]="unities?.length" class="text-center"><span >Frais</span></th>
                    <th [colSpan]="unities?.length" class="text-center"><span >Payement Provenance</span></th>
                    <th [colSpan]="unities?.length" class="text-center"><span >Payement Destination</span></th>
                    <th [colSpan]="unities?.length" class="text-center"><span >Part du Bureau</span></th>
                    <!-- <th [colSpan]="unities?.length" class="text-center"><span >Payement</span></th> -->
                    <th colspan="2" class="text-center"><span >Agences</span></th>
 
                </tr>
 
            <tr>
                <th><span jhiTranslate="appTransfetApp.transaction.dateCreated">Date Created</span></th>
                <th><span jhiTranslate="appTransfetApp.transaction.codeEntre">Code Entre</span></th>
                <th><span jhiTranslate="appTransfetApp.transaction.clientEnvoyeur">Client Envoyeur</span></th>
                <th><span jhiTranslate="appTransfetApp.transaction.clientReceveur">Client Receveur</span></th>
                <th><span jhiTranslate="appTransfetApp.transaction.codeSortie">Code Sortie</span></th>
 
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
 
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
 
                <th *ngFor="let u of unities ;trackBy: trackId">
                    <span>{{u.uniteCode}}</span>
                </th>
 
                <th><span jhiTranslate="appTransfetApp.transaction.agenceEnvoyeur">Provenance</span></th>
                <th><span jhiTranslate="appTransfetApp.transaction.agenceReceveur">Destination</span></th>            
                <th><span jhiTranslate="appTransfetApp.transaction.state">State</span></th>
 
                <!-- <th><span jhiTranslate="appTransfetApp.transaction.montantEnvoyer">Montant Envoyer</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.montantRemis">Montant Remis</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.tauxFrais">Taux Frais</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.montantFrais">Montant Frais</span></th>
 
 
 
 
 
 
            <th><span jhiTranslate="appTransfetApp.transaction.userCreated">User Created</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.userValidated">User Validated</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.userCanceled">User Canceled</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.userUpdated">User Updated</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.userPaid">User Paid</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.uniteEnvoi">Unite Envoi</span></th>
            <th><span jhiTranslate="appTransfetApp.transaction.uniteRecu">Unite Recu</span></th>
            <th></th> -->
            </tr>
            </thead>
            <tbody>
            <tr *ngFor="let transaction of transactions ;trackBy: trackId">
 
                <td>{{transaction.dateCreated | date:'shortDate'}}</td>
                <td>{{transaction.codeEntre}}</td>
                <td >
                    <div class="text-nowrap" *ngIf="transaction.clientEnvoyeur">
                        {{transaction.clientEnvoyeur?.clientName}} {{transaction.clientEnvoyeur?.clientPhone}}
                    </div>
                </td>
                <td >
                    <div class="text-nowrap" *ngIf="transaction.clientReceveur">
                        {{transaction.clientReceveur?.clientName}} {{transaction.clientReceveur?.clientPhone}}
                    </div>
                </td>
 
                <td>{{transaction.codeSortie}}</td>
 
                <td *ngFor="let u of unities ;trackBy: trackI">                    
                    <span *ngIf="transaction.uniteEnvoi?.id == u.id" [class]="'entre_'+transaction.uniteEnvoi.uniteCode">{{transaction.montantEnvoyer}}</span>
                </td>
 
                <td *ngFor="let u of unities ;trackBy: trackI">
                    <span *ngIf="transaction.uniteRecu?.id == u.id" [class]="'sortie_'+transaction.uniteEnvoi.uniteCode">{{transaction.montantRemis}}</span>
                </td>
 
                <td *ngFor="let u of unities ;trackBy: trackI">
                    <span *ngIf="transaction.uniteEnvoi?.id == u.id" [class]="'frais_'+transaction.uniteEnvoi.uniteCode">{{transaction.montantFrais}}</span>
                </td>
 
                <td *ngFor="let u of unities ;trackBy: trackI">
                    <span *ngIf="transaction.uniteEnvoi?.id == u.id" [class]="'pe_'+transaction.uniteEnvoi.uniteCode">
                        {{ transaction.agenceEnvoyeur.tauxEnvoi* transaction.montantFrais/100}}
                    </span>
                </td>
 
                <td *ngFor="let u of unities ;trackBy: trackI">
                    <span *ngIf="transaction.uniteEnvoi?.id == u.id" [class]="'ps_'+transaction.uniteEnvoi.uniteCode">
                        {{ transaction.agenceReceveur.tauxReception* transaction.montantFrais/100}}
                    </span>
                </td>        
 
                <td *ngFor="let u of unities ;trackBy: trackI" >
                    <span *ngIf="transaction.uniteEnvoi?.id == u.id" [class]="'bureau_'+transaction.uniteEnvoi.uniteCode">
                        {{ transaction.montantFrais - ((transaction.agenceEnvoyeur.tauxEnvoi* transaction.montantFrais/100) + (transaction.agenceReceveur.tauxReception* transaction.montantFrais/100))}}
                    </span>
                </td>
 
 
                <td>
                    <div *ngIf="transaction.agenceEnvoyeur">
                        {{transaction.agenceEnvoyeur?.agenceName}}
                    </div>
                </td>
                <td>
                    <div *ngIf="transaction.agenceReceveur">
                        {{transaction.agenceReceveur?.agenceName}}
                    </div>
                </td>
 
                <td jhiTranslate="{{'appTransfetApp.TransactionState.' + transaction.state}}">{{transaction.state}}</td>
 
                <!--<td class="text-right">
                    <div class="btn-group flex-btn-group-container">
                        <button type="submit"
                                [routerLink]="['../transaction', transaction.id ]"
                                class="btn btn-info btn-sm">
                            <span class="fa fa-eye"></span>
                            <span class="hidden-md-down" jhiTranslate="entity.action.view">View</span>
                        </button>
                        <button type="submit"
                                [routerLink]="['/', { outlets: { popup: 'transaction/'+ transaction.id + '/edit'} }]"
                                replaceUrl="true"
                                class="btn btn-primary btn-sm">
                            <span class="fa fa-pencil"></span>
                            <span class="hidden-md-down" jhiTranslate="entity.action.edit">Edit</span>
                        </button>
                        <button type="submit"
                                [routerLink]="['/', { outlets: { popup: 'transaction/'+ transaction.id + '/delete'} }]"
                                replaceUrl="true"
                                class="btn btn-danger btn-sm">
                            <span class="fa fa-remove"></span>
                            <span class="hidden-md-down" jhiTranslate="entity.action.delete">Delete</span>
                        </button>
                    </div>
                </td> -->
            </tr>
            <tr>
                    <th colspan="5"><span class="pull-right">TOTAUX</span></th>
 
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
                    <td *ngFor="let u of unities ;trackBy: trackI">
 
                    </td>
 
 
                </tr>
            </tbody>
        </table>
    </div>
</div>

Bien à vous.

La bonne pratique c'est de mettre un minimum de logique dans la partie html du front.

Et donc de générer un view model approprié à la vue depuis les données remontées par le ou les backend(s) que l'on publie ensuite dans la vue pour avoir un simple ngRepeat à effectuer.

Il faut donc faire les totaux dans la couche javascript (dans un service) avant de publier le viewmodel dans la vue.

Merci Marco46

En m'inspirant de ta réponse j'ai fais un truc comme ça (coté front bien-sûr) :

Code:

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        this.transactionService.query().subscribe((res: ResponseWrapper) => {
                this.transactions = res.json;
 
                // calcul des totaux;
 
                // création des arrays
                this.totauxEntree = new Array(this.unities.length);
                this.totauxSortie = new Array(this.unities.length);
                this.totauxFrais = new Array(this.unities.length);
                this.totauxPP = new Array(this.unities.length);
                this.totauxPD = new Array(this.unities.length);
                this.totauxPB = new Array(this.unities.length);
 
                // Initialisation à 0 des valeurs des arrays
                for (var i = 0; i < this.totauxEntree.length; i++) {
                    this.totauxEntree[i] = 0;
                    this.totauxSortie[i] = 0;
                    this.totauxFrais[i] = 0;
                    this.totauxPP[i] = 0;
                    this.totauxPD[i] = 0;
                    this.totauxPB[i] = 0;
                }
                this.transactions.forEach((t)=>{
 
                    for (var i = 0; i < this.unities.length; i++) {
                        if(t.uniteEnvoi.id === this.unities[i].id){
                            // 1- Totaux entrée
                            this.totauxEntree[i] += t.montantEnvoyer;
                            // 2- Totaux sortie
                            this.totauxSortie[i] += t.montantRemis;
                            // 3- Totaux Frais
                            this.totauxFrais[i] += t.montantFrais;
                            // 4- Totaux Payement provenance
                            this.totauxPP[i] += t.agenceEnvoyeur.tauxEnvoi* t.montantFrais/100;
                             // 5- Totaux Payement destinataire
                            this.totauxPD[i] += t.agenceReceveur.tauxReception* t.montantFrais/100;
 
                        }
                    }
                })
                // 6- Totaux Part du bureau
                for (var i = 0; i < this.unities.length; i++) {                    
                    this.totauxPB[i] +=  (this.totauxFrais[i] - (this.totauxPP[i] + this.totauxPD[i]));    
                } 
            }

Je ne sais pas vraiment si c'est propre, mais bon je pense que c'est acceptable sachant que le tableau n'est pas trop grand.

Merci encore une fois.