tienda_ilusion/don_confiao/frontend/don-confiao/src/components/Purchase.vue

@@ -71,7 +71,7 @@
                   v-model.number="line.quantity"
                   label="Cantidad"
                   type="number"
-                  :rules="[rules.required]"
+                  :rules="[rules.required,rules.positive]"
                   required
               ></v-text-field>
           </v-col>
@@ -177,6 +177,7 @@
        },
        rules: {
            required: value => !!value || 'Requerido.',
+           positive: value => value > 0 || 'La cantidad debe ser mayor que 0.',
        },
          menuItems: [
              { title: 'Inicio', route: '/'},