From 2c23f36223624514f3ad84a7c629792a27e74a68 Mon Sep 17 00:00:00 2001
From: Ricardo Markiewicz <rmarkie@fi.uba.ar>
Date: Tue, 27 Feb 2007 04:47:12 +0000
Subject: [PATCH 1/1] hago ajaxoso el agregado de alumnos a la lista por ahora
 usa el metodo /grupos/de_curso que no deberia estar ahi. calculo que lo
 movere a /curso/existe_alumno o algo asi, despues veo

---
 sercom/static/images/loading.gif        | Bin 0 -> 1765 bytes
 sercom/subcontrollers/grupo/__init__.py |   6 ++++-
 sercom/widgets.py                       |  33 ++++++++++++++++++++++--
 3 files changed, 36 insertions(+), 3 deletions(-)
 create mode 100644 sercom/static/images/loading.gif

diff --git a/sercom/static/images/loading.gif b/sercom/static/images/loading.gif
new file mode 100644
index 0000000000000000000000000000000000000000..31b8cb070582ff26555d41633e5548765d40e40a
GIT binary patch
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diff --git a/sercom/subcontrollers/grupo/__init__.py b/sercom/subcontrollers/grupo/__init__.py
index 1b5f3e1..ab3c454 100644
--- a/sercom/subcontrollers/grupo/__init__.py
+++ b/sercom/subcontrollers/grupo/__init__.py
@@ -221,13 +221,17 @@ class GrupoController(controllers.Controller, identity.SecureResource):
     @expose('json')
     def get_inscripto(self, cursoid, padron):
         msg = 'No existe el alumno %s en el curso seleccionado.' % padron
+        error=False
         try:
             # Busco el alumno inscripto
             alumno = AlumnoInscripto.select(AND(Curso.q.id==cursoid, Alumno.q.usuario==padron))
             if alumno.count() > 0:
                 msg = alumno[0].alumno.nombre
+            else:
+                error = True
         except Exception, (inst):
             msg = u"""Se ha producido un error inesperado al buscar el registro:\n      %s""" % str(inst)
-        return dict(msg=msg)
+            error = True
+        return dict(msg=msg, error=error)
 #}}}
 
diff --git a/sercom/widgets.py b/sercom/widgets.py
index 309adc0..218fb3a 100644
--- a/sercom/widgets.py
+++ b/sercom/widgets.py
@@ -20,10 +20,31 @@ class CustomTextField(widgets.TextField):
 '''
 
 AlumnoMultiSelectAjax = '''
+
+    function _on_alumno_get_result(lista, results)
+    {
+        load.style.visibility = 'hidden';
+        if (results.error) {
+            alert(results.msg);
+            return;
+        }
+        MochiKit.DOM.appendChildNodes(lista, OPTION(results.msg));
+    }
+
+    function _on_alumno_get_error(results)
+    {
+        alert(results)
+        load.style.visibility = 'hidden';
+    }
+
     function agregar_a_la_lista(texto, lista)
     {
+        load = MochiKit.DOM.getElement('loading');
+        load.style.visibility = 'visible';
         t = MochiKit.DOM.getElement(texto);
-        MochiKit.DOM.appendChildNodes(lista, OPTION(t.value));
+        url = "/grupo/get_inscripto?cursoid=1&padron="+t.value;
+        var d = loadJSONDoc(url);
+        d.addCallbacks(partial(_on_alumno_get_result, lista), _on_alumno_get_error);
         t.value = "";
     }
 
@@ -31,6 +52,12 @@ AlumnoMultiSelectAjax = '''
     {
         l = MochiKit.DOM.getElement(lista);
         if (l.selectedIndex < 0) return;
+        
+        /* caso especial, 1 solo item */
+        if (l.options.length == 1) {
+            l.options.length = 0
+            return;
+        }
 
         for (i=l.selectedIndex; i<l.options.length-1;i++)
             l.options[i] = l.options[i+1];
@@ -41,7 +68,9 @@ class AlumnoMultiSelect(widgets.MultipleSelectField):
     template = '''
     <table xmlns:py="http://purl.org/kid/ns#" style="border:none; width:0%;">  
     <tr><td>
-    <input type="text" id="${field_id}_nuevo" /><input type="button" id="_agregar" value="Agregar"
+    <input type="text" id="${field_id}_nuevo" />
+    <img src="/static/images/loading.gif" align="baseline" style="visibility:hidden;" id="loading" width="16px" height="16px" />
+    <input type="button" id="_agregar" value="Agregar"
         onClick=" agregar_a_la_lista('${field_id}_nuevo', '${field_id}'); " />
     </td></tr>
     <tr><td>
-- 
2.43.0