JSON Woocommerce et fuites de mémoires

**SergioMaster** · 03/10/2022, 09h01

Bonjour,

Je me suis déjà beaucoup battu avec WooCommerce. Bien que la plupart des données, je les récupère avec des composants REST il y a des trucs que je suis obligé de traiter via JSON

Ce W.E. je me suis (un peu) battu avec la notion de coupons de réduction, ci-dessous, un texte partiel

Code JSON :

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 {
    "id": 72304,
    "parent_id": 0,
    "status": "lpc_transit",
    "currency": "EUR",
    "number": "72304",
    "coupon_lines": [
        {
            "id": 6584,
            "code": "portgratuit",
            "discount": "10",
            "discount_tax": "2",
            "meta_data": [
                {
                    "id": 75948,
                    "key": "coupon_data",
                    "value": {
                        "id": 71923,
                        "code": "portgratuit",
                        "amount": "10",
                        "date_created": {
                            "date": "2022-09-23 15:34:06.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                       "date_modified": {
                            "date": "2022-09-23 15:35:36.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                       "date_expires": {
                            "date": "2022-10-30 22:00:00.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                        "discount_type": "fixed_product",
                        "description": "TEST",
                        "usage_count": 0,
                        "individual_use": true,
                        "product_ids": [
                        ],
                        "excluded_product_ids": [
                        ],
                        "usage_limit": 1,
                        "usage_limit_per_user": 1,
                        "limit_usage_to_x_items": null,
                        "free_shipping": false,
                        "product_categories": [
                        ],
                        "excluded_product_categories": [
                        ],
                        "exclude_sale_items": false,
                        "minimum_amount": "",
                        "maximum_amount": "",
                        "email_restrictions": [
                            "xxxxx@gmail.com"
                        ],
                        "virtual": false,
                        "meta_data": [
                            {
                                "id": 6155833,
                                "key": "_wt_sc_shipping_methods",
                                "value": ""
                            },
                            {
                                "id": 6155834,
                                "key": "_wt_sc_payment_methods",
                                "value": ""
                            },
                            {
                                "id": 6155835,
                                "key": "_wt_sc_user_roles",
                                "value": ""
                            },
                            {
                                "id": 6155836,
                                "key": "_wt_category_condition",
                                "value": "or"
                            },
                            {
                                "id": 6155837,
                                "key": "_wt_product_condition",
                                "value": "or"
                            },
                            {
                                "id": 6155838,
                                "key": "_wt_free_product_ids",
                                "value": ""
                            },
                            {
                                "id": 6155839,
                                "key": "_wt_min_matching_product_qty",
                                "value": ""
                            },
                            {
                                "id": 6155840,
                                "key": "_wt_max_matching_product_qty",
                                "value": ""
                            },
                            {
                                "id": 6155841,
                                "key": "_wt_min_matching_product_subtotal",
                                "value": ""
                            },
                            {
                                "id": 6155842,
                                "key": "_wt_max_matching_product_subtotal",
                                "value": ""
                            },
                            {
                                "id": 6155843,
                                "key": "_wt_make_coupon_available_in_myaccount",
                                "value": ""
                            },
                            {
                                "id": 6155855,
                                "key": "_wt_coupon_start_date",
                                "value": "2022-09-23"
                            },
                            {
                                "id": 6155856,
                                "key": "_wt_coupon_start_date_timestamp",
                                "value": "1663891200"
                            },
                            {
                                "id": 6155857,
                                "key": "_wt_make_auto_coupon",
                                "value": ""
                            }
                        ]
                    },
                    "display_key": "coupon_data",
                    "display_value": {
                        "id": 71923,
                        "code": "portgratuit",
                        "amount": "10",
                        "date_created": {
                            "date": "2022-09-23 15:34:06.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                        "date_modified": {
                            "date": "2022-09-23 15:35:36.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                        "date_expires": {
                            "date": "2022-10-30 22:00:00.000000",
                            "timezone_type": 1,
                            "timezone": "+00:00"
                        },
                        "discount_type": "fixed_product",
                        "description": "TEST",
                        "usage_count": 0,
                        "individual_use": true,
                        "product_ids": [
                        ],
                        "excluded_product_ids": [
                        ],
                        "usage_limit": 1,
                        "usage_limit_per_user": 1,
                        "limit_usage_to_x_items": null,
                        "free_shipping": false,
                        "product_categories": [
                        ],
                        "excluded_product_categories": [
                        ],
                        "exclude_sale_items": false,
                        "minimum_amount": "",
                        "maximum_amount": "",
                        "email_restrictions": [
                            "xxxxxx@gmail.com"
                        ],
                        "virtual": false,
                        "meta_data": [
                            {
                                "id": 6155833,
                                "key": "_wt_sc_shipping_methods",
                                "value": ""
                            },
                            {
                                "id": 6155834,
                                "key": "_wt_sc_payment_methods",
                                "value": ""
                            },
                            {
                                "id": 6155835,
                                "key": "_wt_sc_user_roles",
                                "value": ""
                            },
                            {
                                "id": 6155836,
                                "key": "_wt_category_condition",
                                "value": "or"
                            },
                            {
                                "id": 6155837,
                                "key": "_wt_product_condition",
                                "value": "or"
                            },
                            {
                                "id": 6155838,
                                "key": "_wt_free_product_ids",
                                "value": ""
                            },
                            {
                                "id": 6155839,
                                "key": "_wt_min_matching_product_qty",
                                "value": ""
                            },
                            {
                                "id": 6155840,
                                "key": "_wt_max_matching_product_qty",
                                "value": ""
                            },
                            {
                                "id": 6155841,
                                "key": "_wt_min_matching_product_subtotal",
                                "value": ""
                            },
                            {
                                "id": 6155842,
                                "key": "_wt_max_matching_product_subtotal",
                                "value": ""
                            },
                            {
                                "id": 6155843,
                                "key": "_wt_make_coupon_available_in_myaccount",
                                "value": ""
                            },
                            {
                                "id": 6155855,
                                "key": "_wt_coupon_start_date",
                                "value": "2022-09-23"
                            },
                            {
                                "id": 6155856,
                                "key": "_wt_coupon_start_date_timestamp",
                                "value": "1663891200"
                            },
                            {
                                "id": 6155857,
                                "key": "_wt_make_auto_coupon",
                                "value": ""
                            }
                        ]
                    }
                }
            ]
        }
    ],
    "refunds": [
    ],
    "date_created_gmt": "2022-09-29T20:39:10",
    "date_modified_gmt": "2022-09-30T12:03:25",
    "date_completed_gmt": null,
    "date_paid_gmt": "2022-09-29T20:40:08",
    "currency_symbol": "€"
}

Que je traite ainsi

Code :

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uses System.JSON;
 
procedure TMainForm.Button1Click(Sender: TObject);
begin
  getcoupons(memo1.text);
end;
 
 
function TMainForm.getcoupons(const ptext: String): String;
var
  JSonValue: TJSonValue;
  JsonArray, Detail : TJSONArray;
  ArrayElement,DetailElement,DisplayValue: TJSonValue;
  V : String;
begin
  try
  memo2.Lines.Clear;
  // Parse le texte
  JsonValue := TJSonObject.ParseJSONValue(pText);
  if JSONValue.TryGetValue<String>('id',v) then memo2.Lines.Add('id : '+v);
 
  // Obtention des coupons (array)
  if JSONValue.TryGetValue<TJSONArray>('coupon_lines',JsonArray) then
  begin
     for ArrayElement in JsonArray do begin
      memo2.Lines.Add('code : '+ArrayElement.GetValue<String>('code') );
      memo2.Lines.Add('remise : '+ ArrayElement.GetValue<String>('discount'));
      // Obtention détails d'un coupon
      if ArrayElement.TryGetValue<TJSONArray>('meta_data',Detail) then
       begin
         for DetailElement in Detail do
         begin
          // Détails à afficher
          if DetailElement.TryGetValue<TJSONValue>('display_value',DisplayValue) then
           begin
              if DisplayValue.TryGetValue<String>('discount_type',v) then
              memo2.Lines.Add('type : '+v );
              if DisplayValue.TryGetValue<String>('description',v) then
              memo2.Lines.Add('description : '+ v);
            end;
         end;
       end;
    end;
  end;
  finally
   // Que faut-il libérer ?
  end;
end;
 
initialization
ReportMemoryLeaksOnShutdown:=true;

J'obtiens (enfin) les résultats mais j'ai des fuites de mémoire et n'ai aucune idée de ce qu'il faut libérer

J'avoue avoir mis toute la liste des variables locales avec un .free mais soit je me suis planté dans l'ordre soit il ne faut pas tout indiquer ça plante lamentablement !
un test type if assigned(variable) then variable.free s'est révélé aussi catastrophique

J'appelle à l'aide avant de continuer à jouer à la roulette russe, merci.

JSON Woocommerce et fuites de mémoires

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