diff --git a/python_flask/.gitignore b/python_flask/.gitignore
index c3a4a1c..1540f1b 100644
--- a/python_flask/.gitignore
+++ b/python_flask/.gitignore
@@ -1,3 +1,3 @@
-/__pycache__/
+__pycache__/
 /venv/
 *.sqlite
diff --git a/python_flask/app.js b/python_flask/app.js
deleted file mode 100644
index a32f61b..0000000
--- a/python_flask/app.js
+++ /dev/null
@@ -1,16 +0,0 @@
-document.body.addEventListener('htmx:responseError', function(evt) {
-  console.log(evt.detail);
-  let detail = evt.detail;
-  let responsecode = detail.xhr.status;
-  if (responsecode == 400 && detail.requestConfig.path === "/list/") {
-    alert(detail.xhr.response)
-    console.log(evt.detail.xhr.repsonse);
-  }
-});
-
-// document.body.addEventListener('htmx:beforeRequest', function(evt) {
-//   let detail = evt.detail;
-//   console.log(evt.detail);
-//   return false;
-// });
-console.log("Added event listener");
diff --git a/python_flask/packager/__init__.py b/python_flask/packager/__init__.py
new file mode 100644
index 0000000..81b5fc4
--- /dev/null
+++ b/python_flask/packager/__init__.py
@@ -0,0 +1,55 @@
+import uuid
+import sqlalchemy
+from flask import Flask
+
+from .helpers import *
+
+from flask_sqlalchemy import SQLAlchemy
+
+app = Flask(__name__)
+app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///./db.sqlite"
+app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
+db = SQLAlchemy(app)
+
+from packager.models import *
+import packager.views
+
+
+db.create_all()
+try:
+    db.session.add(
+        PackageList(
+            id="ab2f16c2-d5f5-460b-b149-0fc9eec12887",
+            name="EDC",
+            description="What you always carry",
+        )
+    )
+    db.session.add(
+        PackageList(
+            id="9f3a72cd-7e30-4263-bd52-92fb7bed1242",
+            name="Camping",
+            description="For outdoors",
+        )
+    )
+
+    db.session.add(
+        PackageListItem(
+            id="4c08f0d5-583e-4882-8bea-2b2faab61fff",
+            name="Taschenmesser",
+            description="",
+            packagelist_id="ab2f16c2-d5f5-460b-b149-0fc9eec12887",
+        )
+    )
+
+    db.session.add(
+        PackageListItem(
+            id="f7fe1c35-23c8-4e57-bec0-56212cff940a",
+            name="Geldbeutel",
+            description="",
+            packagelist_id="ab2f16c2-d5f5-460b-b149-0fc9eec12887",
+        )
+    )
+
+    db.session.commit()
+except sqlalchemy.exc.IntegrityError:
+    pass
diff --git a/python_flask/packager/components/NewPackageList.py b/python_flask/packager/components/NewPackageList.py
new file mode 100644
index 0000000..a4c4f35
--- /dev/null
+++ b/python_flask/packager/components/NewPackageList.py
@@ -0,0 +1,105 @@
+import dominate
+import dominate.tags as t
+from dominate.util import raw
+
+from ..helpers import *
+
+
+def NewPackageList(name=None, description=None, error=False, errormsg=None):
+    assert not (error and not errormsg)
+    with t.form(
+        id="new-pkglist",
+        name="new_pkglist",
+        data_hx_post="/list/",
+        data_hx_target="#pkglist-manager",
+        data_hx_swap="outerHTML",
+        _class=cls("mt-8", "p-5", "border-2", "border-gray-200"),
+        **{"x-on:htmx:before-request": "(e) => submit_enabled || e.preventDefault()"},
+    ) as doc:
+        with t.div(_class=cls("mb-5", "flex", "flex-row", "items-center")):
+            t.span(_class=cls("mdi", "mdi-playlist-plus", "text-2xl", "mr-4"))
+            t.p("Add new package list", _class=cls("inline", "text-xl"))
+        with t.div(_class=cls("w-11/12", "mx-auto")):
+            with t.div(_class=cls("pb-8")):
+                with t.div(
+                    _class=cls("flex", "flex-row", "justify-center", "items-start")
+                ):
+                    t.label(
+                        "Name",
+                        _for="listname",
+                        _class=cls("font-bold", "w-1/2", "p-2", "text-center"),
+                    )
+                    with t.div(_class=cls("w-1/2")):
+                        t._input(
+                            type="text",
+                            id="listname",
+                            name="name",
+                            **{"value": name} if name is not None else {},
+                            data_hx_target="#new-pkglist",
+                            data_hx_post="/list/name/validate",
+                            data_hx_swap="outerHTML",
+                            _class=cls(
+                                "block",
+                                "w-full",
+                                "p-2",
+                                "bg-gray-50",
+                                "appearance-none" if error else None,
+                                "border-2",
+                                "border-red-400" if error else "border-gray-300",
+                                "rounded",
+                                "focus:outline-none",
+                                "focus:bg-white",
+                                "focus:border-purple-500" if not error else None,
+                            ),
+                            **{
+                                "x-on:input": "submit_enabled = $event.srcElement.value.trim().length !== 0;"
+                            },
+                        )
+                        t.p(
+                            errormsg, _class=cls("mt-1", "text-red-400", "text-sm")
+                        ) if error else None
+            with t.div(
+                _class=cls("flex", "flex-row", "justify-center", "items-center", "pb-8")
+            ):
+                t.label(
+                    "Description",
+                    _for="listdesc",
+                    _class=cls("font-bold", "w-1/2", "text-center"),
+                )
+                t._input(
+                    type="text",
+                    id="listdesc",
+                    name="description",
+                    **{"value": description} if description is not None else {},
+                    _class=cls(
+                        "block",
+                        "w-1/2",
+                        "p-2",
+                        "bg-gray-50",
+                        "appearance-none",
+                        "border-2",
+                        "border-gray-300",
+                        "rounded",
+                        "focus:outline-none",
+                        "focus:bg-white",
+                        "focus:border-purple-500",
+                    ),
+                )
+            t._input(
+                type="submit",
+                value="Add",
+                **{
+                    "x-bind:class": 'submit_enabled ? "" : "cursor-not-allowed opacity-50"'
+                },
+                _class=cls(
+                    "py-2",
+                    "border-2",
+                    "rounded",
+                    "border-gray-300",
+                    "mx-auto",
+                    "w-full",
+                    "hover:border-purple-500" if not error else None,
+                    "hover:bg-purple-200" if not error else None,
+                ),
+            )
+    return doc
diff --git a/python_flask/packager/components/PackageListManager.py b/python_flask/packager/components/PackageListManager.py
new file mode 100644
index 0000000..274c688
--- /dev/null
+++ b/python_flask/packager/components/PackageListManager.py
@@ -0,0 +1,30 @@
+import dominate
+import dominate.tags as t
+from dominate.util import raw
+
+from . import NewPackageList, PackageListTable
+
+from ..helpers import *
+
+
+class PackageListManager:
+    def __init__(
+        self, pkglists, name=None, description=None, error=False, errormsg=None
+    ):
+        assert not (error and not errormsg)
+        with t.div(
+            id="pkglist-manager",
+            _class=cls("p-8", "max-w-xl"),
+            **{
+                "x-data": '{ submit_enabled: document.getElementById("listname").value.trim().length !== 0 }'
+            },
+        ) as doc:
+            PackageListTable(pkglists),
+            NewPackageList(
+                name=name, description=description, error=error, errormsg=errormsg
+            )
+
+        self.doc = doc
+
+    def render(self):
+        return self.doc.render()
diff --git a/python_flask/packager/components/PackageListTable.py b/python_flask/packager/components/PackageListTable.py
new file mode 100644
index 0000000..742c57f
--- /dev/null
+++ b/python_flask/packager/components/PackageListTable.py
@@ -0,0 +1,80 @@
+import dominate
+import dominate.tags as t
+from dominate.util import raw
+
+from ..helpers import *
+
+
+def PackageListTable(pkglists):
+    doc = t.div(id="packagelist-table")
+    with doc:
+        t.h1("Package Lists", _class=cls("text-2xl", "mb-5"))
+        with t.table(
+            id="packagelist-table",
+            _class=cls(
+                "table",
+                "table-auto",
+                # "border-separate",
+                "border-collapse",
+                "border-spacing-0",
+                "border",
+                "w-full",
+            ),
+        ):
+            with t.thead(_class=cls("bg-gray-200")):
+                t.tr(
+                    t.th("Name", _class=cls("border", "p-2")),
+                    t.th("Description", _class=cls("border", "p-2")),
+                    t.th(_class=cls("border p-2")),
+                    t.th(_class=cls("border p-2")),
+                    t.th(_class=cls("border p-2")),
+                    _class="h-10",
+                )
+            with t.tbody(data_hx_target="closest tr", data_hx_swap="outerHTML"):
+                for pkglist in pkglists:
+                    t.tr(
+                        t.td(pkglist.name, _class=cls("border", "px-2")),
+                        t.td(str(pkglist.description), _class=cls("border", "px-2")),
+                        t.td(
+                            t.span(_class=cls("mdi", "mdi-delete", "text-xl")),
+                            id="delete-packagelist",
+                            data_hx_delete=f"/list/{pkglist.id}",
+                            _class=cls(
+                                "border",
+                                "bg-red-200",
+                                "hover:bg-red-400",
+                                "cursor-pointer",
+                                "w-8",
+                                "text-center",
+                            ),
+                        ),
+                        t.td(
+                            t.span(_class=cls("mdi", "mdi-pencil", "text-xl")),
+                            id="edit-packagelist",
+                            data_hx_post=f"/list/{pkglist.id}/edit",
+                            _class=cls(
+                                "border",
+                                "bg-blue-200",
+                                "hover:bg-blue-400",
+                                "cursor-pointer",
+                                "w-8",
+                                "text-center",
+                            ),
+                        ),
+                        t.td(
+                            t.span(_class=cls("mdi", "mdi-arrow-right", "text-xl")),
+                            id="edit-packagelist",
+                            # data_hx_post=f"/list/{pkglist.id}/edit",
+                            _class=cls(
+                                "border",
+                                "bg-green-200",
+                                "hover:bg-green-400",
+                                "cursor-pointer",
+                                "w-8",
+                                "text-center",
+                            ),
+                        ),
+                        _class=cls("h-10", "even:bg-gray-100", "hover:bg-purple-200"),
+                    )
+
+    return doc
diff --git a/python_flask/packager/components/__init__.py b/python_flask/packager/components/__init__.py
new file mode 100644
index 0000000..cfc6e69
--- /dev/null
+++ b/python_flask/packager/components/__init__.py
@@ -0,0 +1,3 @@
+from .NewPackageList import NewPackageList
+from .PackageListTable import PackageListTable
+from .PackageListManager import PackageListManager
diff --git a/python_flask/packager/helpers.py b/python_flask/packager/helpers.py
new file mode 100644
index 0000000..319fcbd
--- /dev/null
+++ b/python_flask/packager/helpers.py
@@ -0,0 +1,2 @@
+def cls(*args):
+    return " ".join([a for a in args if a is not None])
diff --git a/python_flask/packager/js/app.js b/python_flask/packager/js/app.js
new file mode 100644
index 0000000..b0f02ec
--- /dev/null
+++ b/python_flask/packager/js/app.js
@@ -0,0 +1,3 @@
+document.body.addEventListener('htmx:responseError', function(evt) {
+  console.log(evt.detail);
+});
diff --git a/python_flask/packager/models.py b/python_flask/packager/models.py
new file mode 100644
index 0000000..75becab
--- /dev/null
+++ b/python_flask/packager/models.py
@@ -0,0 +1,19 @@
+from . import db
+
+
+class PackageList(db.Model):
+    __tablename__ = "packagelist"
+    id = db.Column(db.String(36), primary_key=True)
+    name = db.Column(db.Text, unique=True, nullable=False)
+    description = db.Column(db.Text)
+    items = db.relationship("PackageListItem", backref="packagelist", lazy=True)
+
+
+class PackageListItem(db.Model):
+    __tablename__ = "packagelistitem"
+    id = db.Column(db.String(36), primary_key=True)
+    name = db.Column(db.Text, unique=True, nullable=False)
+    description = db.Column(db.Text)
+    packagelist_id = db.Column(
+        db.String(36), db.ForeignKey("packagelist.id"), nullable=False
+    )
diff --git a/python_flask/app.py b/python_flask/packager/views.py
similarity index 61%
rename from python_flask/app.py
rename to python_flask/packager/views.py
index e661f36..2fe58e3 100644
--- a/python_flask/app.py
+++ b/python_flask/packager/views.py
@@ -1,46 +1,18 @@
-import uuid
 import sqlalchemy
-from flask import Flask, request, make_response
+from . import app
+from .models import *
+from .helpers import *
 
-from flask_sqlalchemy import SQLAlchemy
+import uuid
+import os
 
 import dominate
 import dominate.tags as t
 from dominate.util import raw
 
+from .components import PackageListManager
 
-app = Flask(__name__)
-app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///./db.sqlite"
-app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
-db = SQLAlchemy(app)
-
-
-class PackageList(db.Model):
-    id = db.Column(db.String(36), primary_key=True)
-    name = db.Column(db.Text, unique=True)
-    description = db.Column(db.Text)
-
-
-db.create_all()
-try:
-    db.session.add(
-        PackageList(
-            id="ab2f16c2-d5f5-460b-b149-0fc9eec12887",
-            name="EDC",
-            description="What you always carry",
-        )
-    )
-    db.session.add(
-        PackageList(
-            id="9f3a72cd-7e30-4263-bd52-92fb7bed1242",
-            name="Camping",
-            description="For outdoors",
-        )
-    )
-
-    db.session.commit()
-except sqlalchemy.exc.IntegrityError:
-    pass
+from flask import request, make_response
 
 
 def get_packagelists():
@@ -71,202 +43,21 @@ def delete_packagelist(id):
     return True
 
 
-def pkglist_table():
-    pkglists = get_packagelists()
-    doc = t.div(id="packagelist-table")
-    with doc:
-        t.h1("Package Lists", _class=cls("text-2xl", "mb-5"))
-        with t.table(
-            id="packagelist-table",
-            _class=cls(
-                "table",
-                "table-auto",
-                # "border-separate",
-                "border-collapse",
-                "border-spacing-0",
-                "border",
-                "w-full",
-            ),
-        ):
-            with t.thead(_class=cls("bg-gray-200")):
-                t.tr(
-                    t.th("Name", _class=cls("border", "p-2")),
-                    t.th("Description", _class=cls("border", "p-2")),
-                    t.th(_class=cls("border p-2")),
-                    t.th(_class=cls("border p-2")),
-                    _class="h-10",
-                )
-            with t.tbody(data_hx_target="closest tr", data_hx_swap="outerHTML"):
-                for pkglist in pkglists:
-                    t.tr(
-                        t.td(pkglist.name, _class=cls("border", "px-2")),
-                        t.td(str(pkglist.description), _class=cls("border", "px-2")),
-                        t.td(
-                            t.span(_class=cls("mdi", "mdi-delete", "text-xl")),
-                            id="delete-packagelist",
-                            data_hx_delete=f"/list/{pkglist.id}",
-                            _class=cls(
-                                "border",
-                                "bg-red-200",
-                                "hover:bg-red-400",
-                                "cursor-pointer",
-                                "w-8",
-                                "text-center",
-                            ),
-                        ),
-                        t.td(
-                            t.span(_class=cls("mdi", "mdi-pencil", "text-xl")),
-                            id="edit-packagelist",
-                            data_hx_post=f"/list/{pkglist.id}/edit",
-                            _class=cls(
-                                "border",
-                                "bg-blue-200",
-                                "hover:bg-blue-400",
-                                "cursor-pointer",
-                                "w-8",
-                                "text-center",
-                            ),
-                        ),
-                        _class=cls("h-10", "even:bg-gray-100", "hover:bg-purple-200"),
-                    )
-
-    return doc
-
-
-def cls(*args):
-    return " ".join([a for a in args if a is not None])
-
-
-def new_pkglist_form(name=None, description=None, error=False, errormsg=None):
-    assert not (error and not errormsg)
-    with t.form(
-        id="new-pkglist",
-        name="new_pkglist",
-        data_hx_post="/list/",
-        data_hx_target="#pkglist-manager",
-        data_hx_swap="outerHTML",
-        _class=cls("mt-8", "p-5", "border-2", "border-gray-200"),
-        **{"x-on:htmx:before-request": "(e) => submit_enabled || e.preventDefault()"},
-    ) as doc:
-        with t.div(_class=cls("mb-5", "flex", "flex-row", "items-center")):
-            t.span(_class=cls("mdi", "mdi-playlist-plus", "text-2xl", "mr-4"))
-            t.p("Add new package list", _class=cls("inline", "text-xl"))
-        with t.div(_class=cls("w-11/12", "mx-auto")):
-            with t.div(_class=cls("pb-8")):
-                with t.div(
-                    _class=cls("flex", "flex-row", "justify-center", "items-start")
-                ):
-                    t.label(
-                        "Name",
-                        _for="listname",
-                        _class=cls("font-bold", "w-1/2", "p-2", "text-center"),
-                    )
-                    with t.div(_class=cls("w-1/2")):
-                        t._input(
-                            type="text",
-                            id="listname",
-                            name="name",
-                            **{"value": name} if name is not None else {},
-                            data_hx_target="#new-pkglist",
-                            data_hx_post="/list/name/validate",
-                            data_hx_swap="outerHTML",
-                            _class=cls(
-                                "block",
-                                "w-full",
-                                "p-2",
-                                "bg-gray-50",
-                                "appearance-none" if error else None,
-                                "border-2",
-                                "border-red-400" if error else "border-gray-300",
-                                "rounded",
-                                "focus:outline-none",
-                                "focus:bg-white",
-                                "focus:border-purple-500" if not error else None,
-                            ),
-                            **{
-                                "x-on:input": "submit_enabled = $event.srcElement.value.trim().length !== 0;"
-                            },
-                        )
-                        t.p(
-                            errormsg, _class=cls("mt-1", "text-red-400", "text-sm")
-                        ) if error else None
-            with t.div(
-                _class=cls("flex", "flex-row", "justify-center", "items-center", "pb-8")
-            ):
-                t.label(
-                    "Description",
-                    _for="listdesc",
-                    _class=cls("font-bold", "w-1/2", "text-center"),
-                )
-                t._input(
-                    type="text",
-                    id="listdesc",
-                    name="description",
-                    **{"value": description} if description is not None else {},
-                    _class=cls(
-                        "block",
-                        "w-1/2",
-                        "p-2",
-                        "bg-gray-50",
-                        "appearance-none",
-                        "border-2",
-                        "border-gray-300",
-                        "rounded",
-                        "focus:outline-none",
-                        "focus:bg-white",
-                        "focus:border-purple-500",
-                    ),
-                )
-            t._input(
-                type="submit",
-                value="Add",
-                **{
-                    "x-bind:class": 'submit_enabled ? "" : "cursor-not-allowed opacity-50"'
-                },
-                _class=cls(
-                    "py-2",
-                    "border-2",
-                    "rounded",
-                    "border-gray-300",
-                    "mx-auto",
-                    "w-full",
-                    "hover:border-purple-500" if not error else None,
-                    "hover:bg-purple-200" if not error else None,
-                ),
-            )
-    return doc
-
-
-def pkglist_manager(name=None, description=None, error=False, errormsg=None):
-    assert not (error and not errormsg)
-    with t.div(
-        id="pkglist-manager",
-        _class=cls("p-8", "max-w-xl"),
-        **{
-            "x-data": '{ submit_enabled: document.getElementById("listname").value.trim().length !== 0 }'
-        },
-    ) as doc:
-        pkglist_table()
-        new_pkglist_form(
-            name=name, description=description, error=error, errormsg=errormsg
-        )
-    return doc
-
-
 @app.route("/")
 def root():
     doc = dominate.document(title="My cool title")
     with doc.head:
         t.script(src="https://unpkg.com/htmx.org@1.7.0")
         t.script(src="https://cdn.tailwindcss.com")
-        t.script(src="https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js", defer=True)
+        t.script(src="https://unpkg.com/alpinejs@3.x.x/dist/cdn.js", defer=True)
         t.link(
             rel="stylesheet",
             href="https://cdn.jsdelivr.net/npm/@mdi/font@6.9.96/css/materialdesignicons.min.css",
         )
     with doc:
-        t.script(raw(open("app.js").read()))
-        pkglist_manager()
+
+        t.script(raw(open(os.path.join(app.root_path, "js/app.js")).read()))
+        PackageListManager(get_packagelists())
 
     return make_response(doc.render(), 200)
 
@@ -284,8 +75,12 @@ def add_new_list():
             errormsg = f'Name "{name}" already exists'
 
     return make_response(
-        pkglist_manager(
-            name=name, description=description, error=error, errormsg=errormsg
+        PackageListManager(
+            get_packagelists(),
+            name=name,
+            description=description,
+            error=error,
+            errormsg=errormsg,
         ).render(),
         200,
     )
@@ -361,7 +156,7 @@ def edit_list_submit(id):
     description = request.form["description"]
     if len(name) == 0:
         with t.tr(id="pkglist-edit-row") as doc:
-            with t.td(colspan=2, _class=cls("border-none", "bg-purple-100", "h-10")):
+            with t.td(colspan=3, _class=cls("border-none", "bg-purple-100", "h-10")):
                 t.p("Name cannot be empty", _class=cls("text-red-400", "text-sm"))
                 with t.div(_class=cls("flex", "flex-row", "h-full")):
                     with t.div(
@@ -435,7 +230,7 @@ def edit_list_submit(id):
         except sqlalchemy.exc.IntegrityError:
             with t.tr(id="pkglist-edit-row") as doc:
                 with t.td(
-                    colspan=2, _class=cls("border-none", "bg-purple-100", "h-10")
+                    colspan=3, _class=cls("border-none", "bg-purple-100", "h-10")
                 ):
                     t.p(
                         f"Name {name} already exists",
@@ -546,10 +341,10 @@ def get_edit_list(pkglist):
         _class="h-10",
         id="pkglist-edit-row",
         **{
-            "x-data": '{ edit_submit_enabled: document.getElementById("listedit-name").value.trim().length() !== 0 }'
+            "x-data": '{ edit_submit_enabled: document.getElementById("listedit-name").value.trim().length !== 0 }'
         },
     ) as doc:
-        with t.td(colspan=2, _class=cls("border-none", "bg-purple-100", "h-full")):
+        with t.td(colspan=3, _class=cls("border-none", "bg-purple-100", "h-full")):
             with t.div(_class=cls("flex", "flex-row", "h-full")):
                 with t.div(
                     _class=cls(
diff --git a/python_flask/run.sh b/python_flask/run.sh
index 17a1ab2..5fc5659 100755
--- a/python_flask/run.sh
+++ b/python_flask/run.sh
@@ -1,4 +1,8 @@
 #!/usr/bin/env bash
 
 source ./venv/bin/activate
+
+export FLASK_APP=packager
+export FLASK_ENV=development
+
 python3 -m flask run --reload