add PCR field edition view

src/InSillyCloWeb/assemblies/forms.py

+import insillyclo.main
 from crispy_forms import layout
 from crispy_forms.helper import FormHelper
 from django import forms
@@ -5,7 +6,7 @@ from django.forms import modelformset_factory
 from django.utils.safestring import mark_safe
 from django.utils.translation import gettext as _
 
-from assemblies.models import Assembly, InputPart
+from assemblies.models import Assembly, InputPart, SimulatorJob
 
 SEP_CHOICES = (
     (".", "Dot"),
@@ -54,6 +55,31 @@ class SimulatorDataForm(forms.Form):
     )
 
 
+class PCRModelForm(forms.ModelForm):
+    class Meta:
+        model = SimulatorJob
+        fields = ('pcr_pairs_str',)
+
+    helper = FormHelper()
+    helper.form_tag = False
+
+    primers_file = forms.FileField(
+        required=False,
+        label=_('Primers file'),
+        help_text=_('A CSV file where the header is \"primerId;sequence\".\nNote that the separator is \";\".'),
+    )
+
+    def save(self, commit=True):
+        instance: SimulatorJob = super().save(commit=commit)
+        if not commit or self.cleaned_data['primers_file'] is None:
+            return instance
+        output_fp = instance.job_dir / insillyclo.main.DEFAULT_CONCENTRATIONS_FILENAME
+        with open(output_fp, 'wb') as fh:
+            for chunk in self.cleaned_data['primers_file'].chunks():
+                fh.write(chunk)
+        return instance
+
+
 class AssemblyForm(forms.ModelForm):
     class Meta:
         model = Assembly

src/InSillyCloWeb/assemblies/urls.py

@@ -68,6 +68,7 @@ urlpatterns = [
     path('assembly-simulator/create/<str:step>/', simulator_wizard, name='simulator-create-step'),
     path('assembly-simulator/create/', simulator_wizard, name='simulator-create'),
     path('assembly-simulator/<slug:uuid>/', views.JobSimulatorResult.as_view(), name='simulator-detail'),
+    path('assembly-simulator-job/<slug:uuid>/pcr/', views.JobPCREdit.as_view(), name='simulator-pcr-edit'),
     path('assembly/<int:pk>/download/', views.AssemblyDetailDownloadView.as_view(), name='assembly-download'),
     path('assembly/<int:pk>/delete/', views.AssemblyDeleteView.as_view(), name='assembly-delete'),
     path('fragment', views.show_fragment, name='fragment'),

src/InSillyCloWeb/assemblies/views.py

@@ -7,7 +7,7 @@ from django.http import HttpResponse
 from django.shortcuts import render, redirect
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
-from django.views.generic import ListView, DetailView, View, DeleteView
+from django.views.generic import ListView, DetailView, View, DeleteView, UpdateView
 from django.views.generic.detail import SingleObjectMixin
 
 from . import mixins
@@ -114,3 +114,23 @@ class JobSimulatorResult(DetailView):
     model = models.SimulatorJob
     slug_field = 'uuid'
     slug_url_kwarg = 'uuid'
+
+
+class JobPCREdit(
+    UpdateView,
+):
+    model = models.SimulatorJob
+    form_class = forms.PCRModelForm
+    slug_field = 'uuid'
+    slug_url_kwarg = 'uuid'
+    success_url = reverse_lazy("assemblies:home")
+    template_name = "assemblies/form_host.html"
+
+    def form_valid(self, form):
+        self.object.run_simulator()
+        return super().form_valid(form)
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["title"] = _("PCR primers to use for gel simulation")
+        return context