feat: make generic crudl views

Create generic Create, View, Update, Delete and List views that work
with ContentTypes

Closes: #509

apis_core/core/templatetags/apiscore.py

@@ -1,5 +1,6 @@
 from django import template
 from django.conf import settings
+from django.contrib.contenttypes.models import ContentType
 
 
 register = template.Library()
@@ -13,3 +14,8 @@ def shared_url():
 @register.simple_tag
 def page_range(paginator, number):
     return paginator.get_elided_page_range(number=number)
+
+
+@register.filter
+def contenttype(model):
+    return ContentType.objects.get_for_model(model)

apis_core/generic/tables.py

@@ -0,0 +1,13 @@
+import django_tables2 as tables
+from django.urls import reverse
+from django.contrib.contenttypes.models import ContentType
+
+
+class GenericTable(tables.Table):
+    desc = tables.Column(empty_values=(), linkify=lambda record: reverse("apis_core:generic:genericdetail", args=[ContentType.objects.get_for_model(record), record.pk]))
+
+    class Meta:
+        fields = ['id', 'desc']
+
+    def render_desc(self, record):
+        return str(record)

apis_core/generic/templates/generic/generic_confirm_delete.html

@@ -0,0 +1,32 @@
+{% extends basetemplate|default:"base.html" %}
+
+{% block content %}
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h3 class="modal-title">Confirm delete</h3>
+        <button type="button" class="close" data-dismiss="modal">&times;</button>
+      </div>
+      <div class="modal-body">
+        <form action="" method="post">
+          {% csrf_token %}
+          <h4>
+            Are you sure you want to delete: <strong>{{ object }}</strong> ?
+          </h4>
+          <input class="btn btn-danger" type="submit" value="Yes, I want to delete" />
+        </form>
+      </div>
+      <div class="modal-footer">
+        <input class="btn"
+               type="submit"
+               value="No, bring me back"
+               onclick="goBack()" />
+      </div>
+    </div>
+  </div>
+  <script>
+        function goBack() {
+            window.history.back();
+        }
+  </script>
+{% endblock content %}

apis_core/generic/templates/generic/generic_detail.html

@@ -0,0 +1,6 @@
+{% extends basetemplate|default:"base.html" %}
+{% load render_table from django_tables2 %}
+
+{% block content %}
+  {{ object }}
+{% endblock content %}

apis_core/generic/templates/generic/generic_filter.html

@@ -0,0 +1,44 @@
+{% extends basetemplate|default:"base.html" %}
+{% load render_table from django_tables2 %}
+{% load crispy_forms_tags %}
+{% load apiscore %}
+
+{% block content %}
+<div class="container-fluid">
+<div class="row">
+  {% if filter %}
+  <div class="col-4">
+    <div class="card">
+      <div class="card-header">
+        <div class="row">
+          <div class="col">{{ object_list.model|contenttype }}</div>
+          <div class="col"><a class="btn btn-outline-success float-right btn-sm" href="{% url 'apis_core:generic:create' object_list.model|contenttype %}">Create</a></div>
+        </div>
+      </div>
+      <div class="card-body">
+        {% block filter %}
+        {% crispy filter.form filter.form.helper %}
+        {% endblock filter %}
+      </div>
+      <div class="card-footer text-muted">
+        <a class="btn btn-outline-secondary"  href=".">Reset filter</a>
+      </div>
+    </div>
+  </div>
+  {% endif %}
+  {% if table %}
+  <div class="col-8">
+    <div class="card">
+      <div class="card-header">
+      </div>
+      <div class="card-body">
+        {% block table %}
+        {% render_table table %}
+        {% endblock table %}
+      </div>
+    </div>
+  </div>
+  {% endif %}
+</div>
+</div>
+{% endblock content %}

apis_core/generic/templates/generic/generic_form.html

@@ -0,0 +1,6 @@
+{% extends basetemplate|default:"base.html" %}
+{% load crispy_forms_tags %}
+
+{% block content %}
+  {% crispy form %}
+{% endblock content %}

apis_core/generic/urls.py

@@ -0,0 +1,36 @@
+from django.contrib.contenttypes.models import ContentType
+from django.shortcuts import get_object_or_404
+from django.urls import include, path, register_converter
+
+from apis_core.generic import views
+
+
+class ContenttypeConverter:
+    regex = r"\w+\.\w+"
+
+    def to_python(self, value):
+        app_label, model = value.split(".")
+        return get_object_or_404(ContentType, app_label=app_label, model=model)
+
+    def to_url(self, value):
+        return f"{value.app_label}.{value.model}"
+
+
+register_converter(ContenttypeConverter, "ccc")
+
+app_name = "generic"
+
+urlpatterns = [
+    path(
+        "<ccc:contenttype>/",
+        include(
+            [
+                path("", views.ListCC.as_view(), name="genericlist"),
+                path("<int:pk>", views.DetailCC.as_view(), name="genericdetail"),
+                path("create", views.CreateCC.as_view(), name="create"),
+                path("delete/<int:pk>", views.DeleteCC.as_view()),
+                path("update/<int:pk>", views.UpdateCC.as_view()),
+            ]
+        ),
+    )
+]

apis_core/generic/views.py

@@ -0,0 +1,55 @@
+from django.views.generic import DetailView
+from django.views.generic.edit import CreateView, UpdateView, DeleteView
+from django.urls import reverse
+
+from crispy_forms.helper import FormHelper
+from crispy_forms.layout import Submit
+from django_filters.views import FilterView
+from django_tables2 import SingleTableMixin
+from django_tables2.tables import table_factory
+
+from .tables import GenericTable
+
+class CCMixin:
+    def setup(self, *args, **kwargs):
+        super().setup(*args, **kwargs)
+        self.model = kwargs.get("contenttype").model_class()
+        self.queryset = self.model.objects.all()
+
+    def get_template_names(self):
+        return super().get_template_names() + [
+            f"generic/generic{self.template_name_suffix}.html"
+        ]
+
+
+class ListCC(CCMixin, SingleTableMixin, FilterView):
+    def get_table_class(self):
+        return table_factory(self.kwargs.get("contenttype").model_class(), GenericTable)
+
+    def get_filterset(self, filterset_class):
+        filterset = super().get_filterset(filterset_class)
+        filterset.form.helper = FormHelper()
+        filterset.form.helper.form_method = "GET"
+        filterset.form.helper.add_input(Submit('submit', 'Submit'))
+        return filterset
+
+
+class DetailCC(CCMixin, DetailView):
+    pass
+
+
+class CreateCC(CCMixin, CreateView):
+    fields = "__all__"
+    template_name = "generic/generic_form.html"
+
+
+class DeleteCC(CCMixin, DeleteView):
+    def get_success_url(self):
+        return reverse(
+            "apis:generic:genericlist",
+            args=[self.request.resolver_match.kwargs["contenttype"]],
+        )
+
+
+class UpdateCC(CCMixin, UpdateView):
+    fields = "__all__"

apis_core/urls.py

@@ -168,6 +168,7 @@ def build_apis_mock_request(method, path, view, original_request, **kwargs):
         name="GetEntityGeneric",
     ),
     path("api/dumpdata", Dumpdata.as_view()),
+    path("", include("apis_core.generic.urls", namespace="generic")),
 ]
 
 if "apis_fulltext_download" in settings.INSTALLED_APPS: