Saving progress

taggit/admin.py

@@ -1,7 +1,11 @@
 from django.contrib import admin
-
+from django import forms
+from django.db import transaction
 from taggit.models import Tag, TaggedItem
 
+from django.shortcuts import render, redirect
+from .forms import MergeTagsForm
+
 
 class TaggedItemInline(admin.StackedInline):
     model = TaggedItem
@@ -14,3 +18,45 @@ class TagAdmin(admin.ModelAdmin):
     ordering = ["name", "slug"]
     search_fields = ["name"]
     prepopulated_fields = {"slug": ["name"]}
+    actions = ["merge_tags"]
+
+    def merge_tags(self, request, queryset):
+        print("🚀 merge_tags called")
+        print(f"Request method: ✅ {queryset}")
+        print(f"Request POST data: 😊{request.POST}")
+
+        if request.method == "POST" and "csrfmiddlewaretoken" in request.POST:
+            form = MergeTagsForm(request.POST)
+            if request.method == "POST":
+                print("✅", "after form submission")
+                new_tag_name = "fruit"  # hard coded value of the new tag
+                new_tag, created = Tag.objects.get_or_create(name=new_tag_name)
+                with transaction.atomic():
+                    for tag in queryset:
+                        for tagged_item in tag.taggit_taggeditem_items.all():
+                            tagged_item.tag = new_tag
+                            tagged_item.save()
+                        # tag.delete()  #we can uncomment this to also remove the selected tags
+
+                self.message_user(request, "Tags merged successfully.")
+                return redirect(request.get_full_path())
+            else:
+                print(f"Form errors: {form.errors}")
+                self.message_user(request, "Form is invalid.", level="error")
+        else:
+            form = MergeTagsForm()
+
+        context = {
+            "title": "Merge selected tags into a new tag",
+            "form": form,
+            "action_checkbox_name": admin.helpers.ACTION_CHECKBOX_NAME,
+            "queryset": queryset,
+        }
+
+        return render(
+            request,
+            "admin/taggit/merge_tags_form.html",
+            context,
+        )
+
+    merge_tags.short_description = "Merge selected tags"

taggit/forms.py

@@ -52,3 +52,11 @@ def has_changed(self, initial_value, data_value):
         initial_value.sort()
 
         return initial_value != data_value
+
+
+class MergeTagsForm(forms.Form):
+    new_tag_name = forms.CharField(
+        label="New Tag Name",
+        max_length=255,
+        widget=forms.TextInput(attrs={"id": "id_new_tag_name"}),
+    )

taggit/templates/admin/taggit/merge_tags_form.html

@@ -0,0 +1,29 @@
+{% extends "admin/base_site.html" %} 
+{% load i18n admin_urls %}
+
+{% block title %}{% trans 'Django site admin' %}{% endblock %}
+
+{% block content %}
+<div class="module">
+    <form method="post" id="merge-tags-form">
+        {% csrf_token %}
+        {% for field in form %}
+        <div class="form-row">
+            {{ field.label_tag }}
+            {{ field }}
+            {% if field.errors %}
+            <ul class="errorlist">
+                {% for error in field.errors %}
+                <li>{{ error }}</li>
+                {% endfor %}
+            </ul>
+            {% endif %}
+        </div>
+        {% endfor %}
+        <div class="submit-row">
+            <!-- <input type="submit" value="Merge Tags" name="apply_merge" /> -->
+            <button type="submit" class="button">Merge Tags</button>
+        </div>
+    </form>
+</div>
+{% endblock %}