diff --git a/src/action.js b/src/action.js
index 9a896b197e..ba700340e1 100644
--- a/src/action.js
+++ b/src/action.js
@@ -132,6 +132,24 @@
         return prm.pipe(exec_action);
     };
 
+    Sao.Action.execute = function(id, data, type, context) {
+        if (!type) {
+            Sao.rpc({
+                'method': 'model.ir.action.read',
+                'params': [[id], ['type'], context]
+            }, Sao.Session.current_session).done(function(result) {
+                Sao.Action.execute(id, data, result[0].type, context);
+            });
+        } else {
+            Sao.rpc({
+                'method': 'model.' + type + '.search_read',
+                'params': [[['action', '=', id]], 0, 1, null, null, context]
+            }, Sao.Session.current_session).done(function(result) {
+                Sao.Action.exec_action(result[0], data);
+            });
+        }
+    };
+
     Sao.Action.evaluate = function(action, atype, record) {
         action = jQuery.extend({}, action);
         switch (atype) {
diff --git a/src/common.js b/src/common.js
index 1b195f0e81..7cdd842aa5 100644
--- a/src/common.js
+++ b/src/common.js
@@ -191,15 +191,17 @@
         }
     };
 
-    Sao.common.Button = function(attributes) {
-        var button = jQuery('<button/>').button({
-            text: true,
-            label: attributes.string || ''
-        });
-        // TODO icon
-        button.state_set = function(record) {
+    Sao.common.Button = Sao.class_(Object, {
+        init: function(attributes) {
+            this.attributes = attributes;
+            this.el = jQuery('<button/>').button({
+                text: true,
+                label: attributes.string || ''
+            });
+            // TODO icon
+        },
+        state_set: function(record) {
             // TODO
-        };
-        return button;
-    };
+        }
+    });
 }());
diff --git a/src/model.js b/src/model.js
index 6c43584502..fce14c5a6e 100644
--- a/src/model.js
+++ b/src/model.js
@@ -67,6 +67,7 @@
         array.parent = undefined;
         array.screens = [];
         array.parent_name = '';
+        array.children = [];
         array.child_name = '';
         array.parent_datetime_field = undefined;
         array.record_removed = [];
@@ -217,6 +218,35 @@
             }
             return jQuery.when.apply(jQuery, deferreds);
         };
+        array.written = function(ids) {
+            // TODO
+        };
+        array.reload = function(ids) {
+            this.children.forEach(function(child) {
+                child.reload(ids);
+            });
+            ids.forEach(function(id) {
+                var record = this.get(id);
+                if (record && jQuery.isEmptyObject(record._changed)) {
+                    record._loaded = {};
+                }
+            }.bind(this));
+        };
+        array.set_parent = function(parent) {
+            this.parent = parent;
+            if (parent && parent.model_name == this.model.name) {
+                this.parent.group.chilren.push(this);
+            }
+        };
+        array.destroy = function() {
+            if (this.parent) {
+                var i = this.parent.group.chilren.indexOf(this);
+                if (i >= 0) {
+                    this.parent.group.chilren.splice(i, 1);
+                }
+            }
+            this.parent = null;
+        };
         return array;
     };
 
@@ -967,7 +997,8 @@
             var model;
             if (group !== undefined) {
                 model = group.model;
-                // TODO destroy and unconnect
+                group.destroy();
+                // TODO unconnect
             } else if (record.model.name == this.description.relation) {
                 model = record.model;
             } else {
@@ -999,7 +1030,7 @@
             }
             var set_value = function(fields) {
                 var group = Sao.Group(model, this.context, []);
-                group.parent = record;
+                group.set_parent(record);
                 group.parent_name = this.description.relation_field;
                 group.child_name = this.name;
                 if (!jQuery.isEmptyObject(fields)) {
@@ -1199,7 +1230,7 @@
             }
             var group = Sao.Group(new Sao.Model(this.description.relation),
                     this.context, []);
-            group.parent = record;
+            group.set_parent(record);
             group.parent_name = this.description.relation_field;
             group.child_name = this.name;
             if (record.model.name == this.description.relation) {
@@ -1249,14 +1280,15 @@
             var model;
             if (group !== undefined) {
                 model = group.model;
-                // TODO destroy and unconnect
+                group.destroy();
+                // TODO unconnect
             } else if (record.model.name == this.description.relation) {
                 model = record.model;
             } else {
                 model = new Sao.Model(this.description.relation);
             }
             group = Sao.Group(model, this.context, []);
-            group.parent = record;
+            group.set_parent(record);
             group.parent_name = this.description.relation_field;
             group.child_name = this.name;
             if (record._values[this.name] !== undefined) {
diff --git a/src/screen.js b/src/screen.js
index 24ec4e9da4..112f1bd38f 100644
--- a/src/screen.js
+++ b/src/screen.js
@@ -392,6 +392,38 @@
             }
             this.current_view.set_value();
             return this.current_record.get_on_change_value();
+        },
+        reload: function(ids, written) {
+            this.group.reload(ids);
+            if (written) {
+                this.group.written(ids);
+            }
+            if (this.parent) {
+                this.parent.reload();
+            }
+            this.display();
+        },
+        button: function(attributes) {
+            // TODO confirm
+            var record = this.current_record;
+            record.save().done(function() {
+                var context = record.get_context();
+                record.model.execute(attributes.name,
+                    [[record.id]], context).then(
+                        function(action_id) {
+                            if (action_id) {
+                                Sao.Action.execute(action_id, {
+                                    model: this.model_name,
+                                    id: record.id,
+                                    ids: [record.id]
+                                }, null, context);
+                            }
+                            this.reload([record.id], true);
+                        }.bind(this),
+                        function() {
+                            this.reload([record.id], true);
+                        }.bind(this));
+            }.bind(this));
         }
     });
 }());
diff --git a/src/view.js b/src/view.js
index 5360ac5cb2..4105876796 100644
--- a/src/view.js
+++ b/src/view.js
@@ -162,7 +162,8 @@
                         'confirm': child.getAttribute('confirm'),
                         'name': child.getAttribute('name')
                     };
-                    column = new Sao.View.Tree.ButtonColumn(attributes);
+                    column = new Sao.View.Tree.ButtonColumn(this.screen,
+                            attributes);
                 }
                 this.columns.push(column);
             }.bind(this));
@@ -445,16 +446,20 @@
     });
 
     Sao.View.Tree.ButtonColumn = Sao.class_(Object, {
-        init: function(attributes) {
+        init: function(screen, attributes) {
+            this.screen = screen;
             this.type = 'button';
             this.attributes = attributes;
         },
-        render: function() {
-            var button = jQuery('<button/>', {
-                'class': 'button',
-                'label': this.attributes.string
-            });
-            return button;
+        render: function(record) {
+            var button = new Sao.common.Button(this.attributes);
+            button.el.click(record, this.button_clicked.bind(this));
+            return button.el;
+        },
+        button_clicked: function(event) {
+            var record = event.data;
+            // TODO check state
+            this.screen.button(this.attributes);
         }
     });
 
@@ -499,7 +504,7 @@
                         container.add_row();
                         break;
                     case 'button':
-                        // TODO
+                        this._parse_button(child, container, attributes);
                         break;
                     case 'notebook':
                         this._parse_notebook(
@@ -589,6 +594,15 @@
                     label);
             // TODO help
         },
+        _parse_button: function(node, container, attributes) {
+            var button = new Sao.common.Button(attributes);
+            this.state_widgets.push(button);
+            container.add(
+                    Number(node.getAttribute('colspan') || 1),
+                    button);
+            button.el.click(button, this.button_clicked.bind(this));
+            // TODO help
+        },
         _parse_notebook: function(model, node, container, attributes) {
             var notebook = new Sao.View.Form.Notebook(attributes);
             this.state_widgets.push(notebook);
@@ -726,6 +740,17 @@
                     }
                 }
             }
+        },
+        button_clicked: function(event) {
+            var button = event.data;
+            var record = this.screen.current_record;
+            var fields = Object.keys(this.fields);
+            if (!record.validate(fields)) {
+                this.screen.display();
+                return;
+            } else {
+                this.screen.button(button.attributes);
+            }
         }
     });
 
diff --git a/src/wizard.js b/src/wizard.js
index 9206e7f7b3..378cc4dfb4 100644
--- a/src/wizard.js
+++ b/src/wizard.js
@@ -125,7 +125,7 @@
             this.process();
         },
         _get_button: function(definition) {
-            var button = Sao.common.Button(definition);
+            var button = new Sao.common.Button(definition);
             this.states[definition.state] = button;
             return button;
         },
@@ -187,8 +187,8 @@
         _get_button: function(definition) {
             var button = Sao.Wizard.Dialog._super._get_button.call(this,
                     definition);
-            this.buttonset.append(button);
-            button.click(function() {
+            this.buttonset.append(button.el);
+            button.el.click(function() {
                 this.response(definition.state);
             }.bind(this));
             // TODO default