Error-Handling im Client

src/at/ac/tuwien/infosys/aic11/legacy/LegacyCustomerRelationsManagement.java

@@ -45,6 +45,13 @@ private LegacyCustomerRelationsManagement()
 	public Customer getCustomerByName(String name)
 	throws LegacyException
 	{
+		name = name.trim();
+
+		if(name.isEmpty())
+		{
+			throw new LegacyException("Can't search for Customer without name (getCustomerByName)");
+		}
+
 		for(Customer customer : customers.values())
 		{
 			String fullname = customer.getFirstName() + " " + customer.getMiddleName() + " " + customer.getLastName();

webapp/frontend/static/screen.css

@@ -52,3 +52,15 @@ th[colspan="2"]
     padding-top: 1em;
     font-size: 1.2em;
 }
+
+
+
+div.error
+{
+    margin-top: 3em;
+    border: thin solid #8B3130;
+    background-color: #B97F82;
+width: 30%;
+    padding: .5em;
+    color: #523B51;
+}

webapp/frontend/templates/base.html

@@ -14,6 +14,15 @@ <h1><a href="/">Credit Approval Client</a></h1>
   {% block content %}
 
   {% endblock %}
+
+{% if messages %}
+ {% for message in messages %}
+    <div{% if message.tags %} class="{{ message.tags }}"{% endif %}>
+     {{ message }}
+    </div>
+ {% endfor %}
+{% endif %}
+
   </div>
  </body>
 </html>

webapp/frontend/templates/index.html

@@ -16,5 +16,6 @@ <h2>Select Customer</h2>
     <input type="submit" value="Search" />
    </td>
   </tr>
+ </table>
 </form>
 {% endblock %}

webapp/frontend/views.py

@@ -2,6 +2,7 @@
 from django.template import RequestContext
 from django.http import HttpResponseRedirect
 from django.core.urlresolvers import reverse
+from django.contrib import messages
 
 from webapp.backend import creditapprovalclient, ratingclient
 from webapp.frontend import sessionstore
@@ -23,9 +24,15 @@ def index(request):
 def enter_request(request):
 
     name = request.POST['name']
-    customer = creditapprovalclient.getCustomerByName(name)
-    customer = ratingclient.setRating(customer)
-    sessionstore.set_customer(request, customer)
+
+    try:
+        customer = creditapprovalclient.getCustomerByName(name)
+        customer = ratingclient.setRating(customer)
+        sessionstore.set_customer(request, customer)
+
+    except Exception as e:
+        messages.error(request, e)
+        return HttpResponseRedirect(request.META['HTTP_REFERER'])
 
     return render_to_response('enter-request.html', {
             'customer': customer,
@@ -54,7 +61,13 @@ def show_warrantor(request):
 
     credit_req = sessionstore.get_request(request)
 
-    warrantor = creditapprovalclient.getCustomerByName(name)
+    try:
+        warrantor = creditapprovalclient.getCustomerByName(name)
+    except:
+        messages.error(request, 'Customer with name "{name}" not found'.format(
+            name=name))
+        warrantor = None
+
     if warrantor:
         warrantor = ratingclient.setRating(warrantor)
         credit_req.warrantors.append(warrantor)