#84 refactor(frontend): extact to method django-api.

tienda_ilusion/don_confiao/frontend/don-confiao/src/services/django-api.js

@@ -1,54 +1,22 @@
 class DjangoApi {
   getCustomers() {
-    return new Promise((resolve, reject) => {
+    const url = '/don_confiao/api/customers/';
-      fetch('/don_confiao/api/customers/')
+    return this.getRequest(url);
-        .then(response => response.json())
-        .then(data => {
-          resolve(data);
-        })
-        .catch(error => {
-          reject(error);
-        });
-    });
   }
 
   getProducts() {
-    return new Promise((resolve, reject) => {
+    const url = '/don_confiao/api/products/';
-      fetch('/don_confiao/api/products/')
+    return this.getRequest(url);
-         .then(response => response.json())
-         .then(data => {
-           resolve(data);
-         })
-         .catch(error => {
-           reject(error);
-         });
-    });
   }
 
   getPaymentMethods() {
-    return new Promise((resolve, reject) => {
+    const url = '/don_confiao/payment_methods/all/select_format';
-      fetch('/don_confiao/payment_methods/all/select_format')
+    return this.getRequest(url);
-         .then(response => response.json())
-         .then(data => {
-           resolve(data);
-         })
-         .catch(error => {
-           reject(error);
-         });
-    });
   }
 
   getSummaryPurchase(purchaseId) {
-    return new Promise ((resolve, reject) => {
+    const url = `/don_confiao/resumen_compra_json/${purchaseId}`;
-      fetch(`/don_confiao/resumen_compra_json/${purchaseId}`)
+    return this.getRequest(url);
-        .then(response => response.json())
-        .then(data => {
-          resolve(data);
-        })
-        .catch(error => {
-          reject(error);
-        });
-    });
   }
 
   createPurchase(purchase) {
@@ -75,6 +43,19 @@ class DjangoApi {
       }).catch(error => reject(error));
     });
   }
+
+  getRequest(url) {
+    return new Promise ((resolve, reject) => {
+      fetch(url)
+        .then(response => response.json())
+        .then(data => {
+          resolve(data);
+        })
+        .catch(error => {
+          reject(error);
+        });
+    });
+  }
 }
 
 export default DjangoApi;