start component parameter formset

shimatta_kenkyusho/parts/forms.py

@@ -1,6 +1,7 @@
 from django import forms
 from django.core.exceptions import ValidationError
 from parts import models as parts_models
+from shimatta_modules.EngineeringNumberConverter import EngineeringNumberConverter
 
 class MyTestForm(forms.Form):
     pass
@@ -200,3 +201,63 @@ class EditComponentForm(forms.Form):
         self.instance.package = self.cleaned_data['package_object']
         self.instance.component_type = self.cleaned_data['component_type_object']
         self.instance.save()
+
+class EditComponentParameterForm(forms.Form):
+    parameter_type = forms.CharField() # This must come first. Do not change the order of these elements!
+    value = forms.CharField()
+
+    def __init__(self, *args, **kwargs):
+
+        init_values = kwargs.get('initial', None)
+        if init_values is not None:            
+            if isinstance(init_values['parameter_type'], parts_models.ComponentParameterType):
+                type_instance = init_values['parameter_type']
+                self.parameter_type_object = type_instance
+                kwargs['initial']['parameter_type'] = init_values['parameter_type'].parameter_name
+                if isinstance(init_values['value'], int) or isinstance(init_values['value'], float):
+                    if type_instance.engineering_unit:
+                        (num, prefix) = EngineeringNumberConverter.number_to_engineering(init_values['value'], False)
+                        kwargs['initial']['value'] = f'{num} {prefix}'
+                    elif type_instance.it_unit:
+                        (num, prefix) = EngineeringNumberConverter.number_to_engineering(init_values['value'], True)
+                        kwargs['initial']['value'] = f'{num} {prefix}'
+
+        super().__init__(*args, **kwargs)
+
+    def clean_parameter_type(self):
+        data = self.cleaned_data['parameter_type']
+
+        param_instance = None
+        try:
+            param_instance = parts_models.ComponentParameterType.objects.get(parameter_name=data)
+        except:
+            raise ValidationError(f'Component Parameter Type {data} is not defined')
+        
+        self.cleaned_data['parameter_type_object'] = param_instance
+        return data
+
+    def clean_value(self):
+        parameter_type = self.cleaned_data.get('parameter_type_object', None)
+        value_data = self.cleaned_data['value']
+
+        if parameter_type is None:
+            raise ValidationError('Cannot convert value for unknown parameter type')
+
+        processed_value = None
+
+        if parameter_type.it_unit or parameter_type.engineering_unit:
+            try:
+                processed_value = EngineeringNumberConverter.engineering_to_number(value_data)
+            except:
+                raise ValidationError(f'Cannot not convert Value "{value_data}" to a number')
+        elif parameter_type.freetext_parameter:
+            processed_value = value_data
+        else:
+            try:
+                processed_value = float(value_data)
+            except:
+                raise ValidationError(f'"{value_data}" is not a valid number')
+
+        self.cleaned_data['processed_value'] = processed_value
+
+        return value_data

shimatta_kenkyusho/parts/migrations/0003_alter_componentparametertype_unit.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2 on 2021-11-12 18:53
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('parts', '0002_alter_componenttype_possible_parameter'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='componentparametertype',
+            name='unit',
+            field=models.CharField(blank=True, max_length=10, null=True),
+        ),
+    ]

shimatta_kenkyusho/parts/models.py

@@ -19,13 +19,17 @@ class ComponentParameterType(models.Model):
 
 	parameter_name = models.CharField(max_length=50, unique=True)
 	parameter_description = models.TextField(null=True, blank=True)
-	unit = models.CharField(max_length=10)
+	unit = models.CharField(max_length=10, null=True, blank=True)
 	freetext_parameter = models.BooleanField()
 	engineering_unit = models.BooleanField()
 	it_unit = models.BooleanField()
 
 	def __str__(self):
-		return self.parameter_name + ' in ' + self.unit
+		unit = self.unit
+		if unit:
+			return self.parameter_name + ' in ' + unit
+		else:
+			return self.parameter_name
 
 class ComponentType(models.Model):
 	class Meta:

shimatta_kenkyusho/parts/views.py

@@ -11,12 +11,12 @@ from django.views import View
 import django.forms as forms
 from django.views.generic import TemplateView, DetailView
 from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMixin
-from .models import Storage, Stock, Component, Distributor, Manufacturer, Package
+from .models import Storage, Stock, Component, Distributor, Manufacturer, Package, ComponentParameter, ComponentParameterType
 from .qr_parser import QrCodeValidator
 from django.core.paginator import Paginator
 from django.core.exceptions import ValidationError
 from django.db import IntegrityError
-from .forms import MyTestForm, AddSubStorageForm, DeleteStockForm, EditWatermarkForm, EditStockAmountForm, AddStockForm, EditComponentForm
+from .forms import MyTestForm, AddSubStorageForm, DeleteStockForm, EditWatermarkForm, EditStockAmountForm, AddStockForm, EditComponentForm, EditComponentParameterForm
 from django.db.models import Q
 from django.db.models.functions import Lower
 import uuid
@@ -265,7 +265,6 @@ class StockViewDetail(LoginRequiredMixin, BaseTemplateMixin, DetailView):
 
         componente_stock_page = self.request.GET.get('stock_page', default=1)
         
-        
         stock_paginator = Paginator(self.search_stock_queryset(stock_search_input), self.default_pagination_size)
 
         context['storages'] = storage_paginator.get_page(storage_page)
@@ -392,11 +391,27 @@ class ComponentDetailView(LoginRequiredMixin, BaseTemplateMixin, DetailView):
     base_title = ''
     navbar_selected = 'Components'
 
+    def preparae_initial_param_formset_data(self):
+        parameters = ComponentParameter.objects.filter(component=self.object)
+        initdata = []
+        for param in parameters:
+            param_type = param.parameter_type
+            if param_type.freetext_parameter:
+                value = param.text_value
+            else:
+                value = param.value
+            initdata.append({'parameter_type': param_type, 'value': value})
+        return initdata
+    
     def get_context_data(self, **kwargs):
         self.base_title = 'Component / '+self.object.name
         context = super().get_context_data(**kwargs)
         context['component'] = self.object
         context['edit_form'] = EditComponentForm(instance=self.object)
+        
+        ParameterFormset = forms.formset_factory(EditComponentParameterForm, extra=0, max_num=100) 
+        context['param_formset'] = ParameterFormset(
+            initial=self.preparae_initial_param_formset_data())
         return context
 
     def handle_submit_edit_post(self, request, **kwargs):
@@ -420,10 +435,23 @@ class ComponentDetailView(LoginRequiredMixin, BaseTemplateMixin, DetailView):
             context['edit_form'] = form
         return self.render_to_response(context)
 
+    def handle_submit_edit_params_post(self, request, **kwargs):
+
+        f = EditComponentParameterForm(data=request.POST)
+        if f.is_valid():
+            print('Valid')
+        else:
+            print('Invalid')
+
+        context = self.get_context_data()
+        return self.render_to_response(context)
+
     def post(self, request, *args, **kwargs):
         self.object = self.get_object()
         if 'submit-edit-comp' in request.POST:
             return self.handle_submit_edit_post(request, **kwargs)
+        elif 'submit-edit-params' in request.POST:
+            return self.handle_submit_edit_params_post(request, **kwargs)
         
         return super().post(request, *args, **kwargs)
 

shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py

@@ -0,0 +1,67 @@
+
+class EngineeringNumberConverter():
+
+    prefixes = [
+        ('y', 1e-24),
+        ('z', 1e-21),
+        ('a', 1e-18),
+        ('f', 1e-15),
+        ('p', 1e-12),
+        ('n', 1e-9),
+        ('u', 1e-6),
+        ('m', 1e-3),
+        # We skip centi and dezi because no one really uses these besides for length measurements
+        ('', 1),
+        # We also skip h for hekto
+        ('k', 1e3),
+        ('M', 1e6),
+        ('G', 1e9),
+        ('T', 1e12),
+        ('P', 1e15),
+        ('E', 1e18),
+        ('Z', 1e21),
+        ('Y', 1e24),
+    ]
+    it_prefixes = [
+        ('', 1),
+        ('Ki', 1024),
+        ('Mi', 1024*1024),
+        ('Gi', 1024*1024*1024),
+        ('Ti', 1024*1024*1024*1024)
+    ]
+    
+    @classmethod
+    def number_to_engineering(c, number, it_unit = False):
+        """
+        Convert a number to engineering SI syntax with prefix.
+        This function will return a tuple of (new_number, prefix)
+        """
+        if it_unit:
+            used_prefixes = c.it_prefixes
+        else:
+            used_prefixes = c.prefixes
+
+        if (len(used_prefixes) < 2):
+            return (number / used_prefixes[0][1], used_prefixes[0])
+        
+        for i, (prefix, scale) in enumerate(used_prefixes[1:], 1):
+            if number < scale:
+                return (number / used_prefixes[i-1][1], used_prefixes[i-1][0])
+        
+        return (number / used_prefixes[-1][1], used_prefixes[-1][0])
+
+    @classmethod
+    def engineering_to_number(c, input):
+        cleaned_input = input.strip().replace(' ', '')
+
+        selected_scaling = 1
+
+        for (prefix, scale) in c.prefixes+c.it_prefixes:
+            if prefix == '':
+                continue
+            if cleaned_input.endswith(prefix):
+                cleaned_input = cleaned_input.replace(prefix, '')
+                selected_scaling = scale
+                break
+        
+        return float(cleaned_input) * selected_scaling

shimatta_kenkyusho/templates/parts/components-detail.html

@@ -1,6 +1,7 @@
 {% extends 'base.html' %}
 {% load static %}
 {% load qr_code %}
+{% load crispy_forms_tags %}
 
 {% block content %}
 <div class="container">
@@ -72,6 +73,34 @@
                     No description available
                 </div>
             {% endif %}
+            <div class="row">
+                <div class="col">
+                    <h2>Parameters</h2>
+                    <form method="post">
+                    {% csrf_token %}
+                        <table class="table">
+                            <thead>
+                                <th scope="col">Parameter</th>
+                                <th scope="col">Value</th>
+                                <th scope="col">Unit</th>
+                            </thead>
+                            <tbody>
+                            {% for f in param_formset %}
+                                <tr>
+                                    <td><input type="text" class="form-control" name="{{f.parameter_type.name}}" value="{{f.parameter_type.value}}"></td>
+                                    <td><input type="text" class="form-control" name="{{f.value.name}}" value="{{f.value.value}}"></td>
+                                    <td>{{f.parameter_type_object.unit}}</td>
+                                </tr>
+                            {% endfor %}
+                            </tbody>
+                        </table>
+                        <input type="submit" class="btn btn-primary" name="submit-edit-params" value="Save Parameters">
+                    </form>
+                </div>
+                <div class="col">
+                    <h2>Stocks</h2>
+                </div>
+            </div>
             
         </div>
     </div>