fix action for multiple items on show_cascade view

examples/issue_2054/README.rst

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+Quick How to Example
+--------------------
+
+Simple contacts application.
+
+Insert test data::
+
+    $ python testdata.py
+
+Run it::
+
+    $ export FLASK_APP=app/__init__.py
+    $ flask fab create-admin
+    $ flask run
+

examples/issue_2054/app/__init__.py

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+import logging
+
+from flask import Flask
+from flask_appbuilder import AppBuilder, SQLA
+
+logging.basicConfig(format="%(asctime)s:%(levelname)s:%(name)s:%(message)s")
+logging.getLogger().setLevel(logging.DEBUG)
+
+app = Flask(__name__)
+app.config.from_object("config")
+db = SQLA(app)
+appbuilder = AppBuilder(app, db.session)
+
+from . import models, views  # noqa

examples/issue_2054/app/models.py

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+import datetime
+
+from flask_appbuilder import Model
+from sqlalchemy import Column, Date, ForeignKey, Integer, String
+from sqlalchemy.orm import relationship
+
+mindate = datetime.date(datetime.MINYEAR, 1, 1)
+
+
+class ContactGroup(Model):
+    id = Column(Integer, primary_key=True)
+    name = Column(String(50), unique=True, nullable=False)
+
+    def __repr__(self):
+        return self.name
+
+
+class Gender(Model):
+    id = Column(Integer, primary_key=True)
+    name = Column(String(50), unique=True, nullable=False)
+
+    def __repr__(self):
+        return self.name
+
+
+class Contact(Model):
+    id = Column(Integer, primary_key=True)
+    name = Column(String(150), unique=True, nullable=False)
+    address = Column(String(564))
+    birthday = Column(Date, nullable=True)
+    personal_phone = Column(String(20))
+    personal_celphone = Column(String(20))
+    contact_group_id = Column(Integer, ForeignKey("contact_group.id"), nullable=False)
+    contact_group = relationship("ContactGroup")
+    gender_id = Column(Integer, ForeignKey("gender.id"), nullable=False)
+    gender = relationship("Gender")
+
+    def __repr__(self):
+        return self.name
+
+    def month_year(self):
+        date = self.birthday or mindate
+        return datetime.datetime(date.year, date.month, 1) or mindate
+
+    def year(self):
+        date = self.birthday or mindate
+        return datetime.datetime(date.year, 1, 1)

examples/issue_2054/app/translations/pt/LC_MESSAGES/messages.po

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+# Portuguese translations for PROJECT.
+# Copyright (C) 2014 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2014.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2014-01-13 00:29+0000\n"
+"PO-Revision-Date: 2014-01-13 00:18+0000\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: pt <LL@li.org>\n"
+"Plural-Forms: nplurals=2; plural=(n != 1)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 1.3\n"
+
+#: app/views.py:42
+msgid "List Groups"
+msgstr "Lista de Grupos"
+
+#: app/views.py:43
+msgid "List Contacts"
+msgstr ""
+

examples/issue_2054/app/views.py

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+import calendar
+
+from flask import redirect
+from flask_appbuilder import ModelView
+from flask_appbuilder.actions import action
+from flask_appbuilder.charts.views import GroupByChartView
+from flask_appbuilder.models.group import aggregate_count
+from flask_appbuilder.models.sqla.interface import SQLAInterface
+
+from . import appbuilder, db
+from .models import Contact, ContactGroup, Gender
+
+
+def fill_gender():
+    try:
+        db.session.add(Gender(name="Male"))
+        db.session.add(Gender(name="Female"))
+        db.session.commit()
+    except Exception:
+        db.session.rollback()
+
+
+class ContactModelView(ModelView):
+    datamodel = SQLAInterface(Contact)
+
+    list_columns = ["name", "personal_celphone", "birthday", "contact_group.name"]
+
+    base_order = ("name", "asc")
+    show_fieldsets = [
+        ("Summary", {"fields": ["name", "gender", "contact_group"]}),
+        (
+            "Personal Info",
+            {
+                "fields": [
+                    "address",
+                    "birthday",
+                    "personal_phone",
+                    "personal_celphone",
+                ],
+                "expanded": False,
+            },
+        ),
+    ]
+
+    add_fieldsets = [
+        ("Summary", {"fields": ["name", "gender", "contact_group"]}),
+        (
+            "Personal Info",
+            {
+                "fields": [
+                    "address",
+                    "birthday",
+                    "personal_phone",
+                    "personal_celphone",
+                ],
+                "expanded": False,
+            },
+        ),
+    ]
+
+    edit_fieldsets = [
+        ("Summary", {"fields": ["name", "gender", "contact_group"]}),
+        (
+            "Personal Info",
+            {
+                "fields": [
+                    "address",
+                    "birthday",
+                    "personal_phone",
+                    "personal_celphone",
+                ],
+                "expanded": False,
+            },
+        ),
+    ]
+
+    @action("muldelete", "Delete", "Delete all Really?", "fa-rocket")
+    def muldelete(self, items):
+        if isinstance(items, list):
+            self.datamodel.delete_all(items)
+            self.update_redirect()
+        else:
+            self.datamodel.delete(items)
+        return redirect(self.get_redirect())
+
+
+class GroupModelView(ModelView):
+    datamodel = SQLAInterface(ContactGroup)
+    related_views = [ContactModelView]
+    show_template = "appbuilder/general/model/show_cascade.html"
+
+    @action("muldelete", "Delete", "Delete all Really?", "fa-rocket")
+    def muldelete(self, items):
+        if isinstance(items, list):
+            self.datamodel.delete_all(items)
+            self.update_redirect()
+        else:
+            self.datamodel.delete(items)
+        return redirect(self.get_redirect())
+
+
+def pretty_month_year(value):
+    return calendar.month_name[value.month] + " " + str(value.year)
+
+
+def pretty_year(value):
+    return str(value.year)
+
+
+class ContactTimeChartView(GroupByChartView):
+    datamodel = SQLAInterface(Contact)
+
+    chart_title = "Grouped Birth contacts"
+    chart_type = "AreaChart"
+    label_columns = ContactModelView.label_columns
+    definitions = [
+        {
+            "group": "month_year",
+            "formatter": pretty_month_year,
+            "series": [(aggregate_count, "group")],
+        },
+        {
+            "group": "year",
+            "formatter": pretty_year,
+            "series": [(aggregate_count, "group")],
+        },
+    ]
+
+
+db.create_all()
+fill_gender()
+appbuilder.add_view(
+    GroupModelView,
+    "List Groups",
+    icon="fa-folder-open-o",
+    category="Contacts",
+    category_icon="fa-envelope",
+)
+appbuilder.add_view(
+    ContactModelView, "List Contacts", icon="fa-envelope", category="Contacts"
+)
+appbuilder.add_separator("Contacts")
+appbuilder.add_view(
+    ContactTimeChartView,
+    "Contacts Birth Chart",
+    icon="fa-dashboard",
+    category="Contacts",
+)

examples/issue_2054/babel/babel.cfg

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+[python: **.py]
+[jinja2: **/templates/**.html]
+encoding = utf-8

examples/issue_2054/config.py

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+import os
+
+from flask_appbuilder.const import AUTH_DB
+from flask_appbuilder.exceptions import PasswordComplexityValidationError
+
+basedir = os.path.abspath(os.path.dirname(__file__))
+
+CSRF_ENABLED = True
+SECRET_KEY = "\2\1thisismyscretkey\1\2\e\y\y\h"
+
+OPENID_PROVIDERS = [
+    {"name": "Google", "url": "https://www.google.com/accounts/o8/id"},
+    {"name": "Yahoo", "url": "https://me.yahoo.com"},
+    {"name": "AOL", "url": "http://openid.aol.com/<username>"},
+    {"name": "Flickr", "url": "http://www.flickr.com/<username>"},
+    {"name": "MyOpenID", "url": "https://www.myopenid.com"},
+]
+
+SQLALCHEMY_DATABASE_URI = "sqlite:///" + os.path.join(basedir, "app.db")
+# SQLALCHEMY_DATABASE_URI = 'mysql://username:password@mysqlserver.local/quickhowto'
+# SQLALCHEMY_DATABASE_URI = 'postgresql://scott:tiger@localhost:5432/myapp'
+# SQLALCHEMY_ECHO = True
+SQLALCHEMY_POOL_RECYCLE = 3
+
+BABEL_DEFAULT_LOCALE = "en"
+BABEL_DEFAULT_FOLDER = "translations"
+LANGUAGES = {
+    "en": {"flag": "gb", "name": "English"},
+    "pt": {"flag": "pt", "name": "Portuguese"},
+    "pt_BR": {"flag": "br", "name": "Pt Brazil"},
+    "es": {"flag": "es", "name": "Spanish"},
+    "fr": {"flag": "fr", "name": "French"},
+    "de": {"flag": "de", "name": "German"},
+    "zh": {"flag": "cn", "name": "Chinese"},
+    "ru": {"flag": "ru", "name": "Russian"},
+    "pl": {"flag": "pl", "name": "Polish"},
+    "el": {"flag": "gr", "name": "Greek"},
+    "ja_JP": {"flag": "jp", "name": "Japanese"},
+}
+
+FAB_API_MAX_PAGE_SIZE = 100
+
+
+def custom_password_validator(password: str) -> None:
+    """
+    A simplistic example for a password validator
+    """
+    if len(password) < 8:
+        raise PasswordComplexityValidationError("Must have at least 8 characters")
+
+
+# FAB_PASSWORD_COMPLEXITY_VALIDATOR = custom_password_validator
+
+FAB_PASSWORD_COMPLEXITY_ENABLED = True
+
+# ------------------------------
+# GLOBALS FOR GENERAL APP's
+# ------------------------------
+UPLOAD_FOLDER = basedir + "/app/static/uploads/"
+IMG_UPLOAD_FOLDER = basedir + "/app/static/uploads/"
+IMG_UPLOAD_URL = "/static/uploads/"
+AUTH_TYPE = AUTH_DB
+# AUTH_LDAP_SERVER = "ldap://dc.domain.net"
+AUTH_ROLE_ADMIN = "Admin"
+AUTH_ROLE_PUBLIC = "Public"
+APP_NAME = "F.A.B. Example"
+APP_THEME = ""  # default
+# APP_THEME = "cerulean.css"      # COOL
+# APP_THEME = "amelia.css"
+# APP_THEME = "cosmo.css"
+# APP_THEME = "cyborg.css"       # COOL
+# APP_THEME = "flatly.css"
+# APP_THEME = "journal.css"
+# APP_THEME = "readable.css"
+# APP_THEME = "simplex.css"
+# APP_THEME = "slate.css"          # COOL
+# APP_THEME = "spacelab.css"      # NICE
+# APP_THEME = "united.css"
+# APP_THEME = "darkly.css"
+# APP_THEME = "lumen.css"
+# APP_THEME = "paper.css"
+# APP_THEME = "sandstone.css"
+# APP_THEME = "solar.css"
+# APP_THEME = "superhero.css"