I simply want to implement a search view into my Django app. But when i try to search something on my App i get the following error:
'unrecognized token: "@"'
In the end i want that my Query is a combination of category and searchword. So that the user can filter specific categories (Just like Amazon.com searchfield) e.g.: http://127.0.0.1:8000/search/?category=1&q=hallo
base.html
...
<div class="globalsearch">
<form id="searchform" action="{% url 'search' %}" method="get" accept-charset="utf-8">
<label for="{{ categorysearch_form.category.id_for_label }}">In category: </label> {{ categorysearch_form.category }}
<input class="searchfield" id="searchbox" name="q" type="text" placeholder="Search for ...">
<button class="searchbutton" type="submit">
<i class="fa fa-search"></i>
</button>
</form>
</div>
</div>
...
categorysearch_form is a dropdown selector that gets his ID from the Database.
views.py
...
from django.contrib.postgres.search import SearchQuery, SearchRank, SearchVector
from django.views.generic import ListView
class globalsearch(ListView):
"""
Display a Post List page filtered by the search query.
"""
model = Post
paginate_by = 10
def get_queryset(self):
qs = Post.objects.all()
keywords = self.request.GET.get('q')
if keywords:
query = SearchQuery(keywords)
title_vector = SearchVector('title', weight='A')
content_vector = SearchVector('content', weight='B')
tag_vector = SearchVector('tag', weight='C')
vectors = title_vector + content_vector + tag_vector
qs = qs.annotate(search=vectors).filter(search=query)
qs = qs.annotate(rank=SearchRank(vectors, query)).order_by('-rank')
return qs
...
urls.py
...
url(r'^search/$', views.globalsearch.as_view(), name='search'),
...
Search.html results are getting displayd here:
{% extends 'quickblog/base.html' %}
{% block content %}
{% for post in object_list %}
<div class="post">
<h1><u><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title }}</a></u></h1>
<p>{{ post.content|linebreaksbr }}</p>
<div class="date">
<a>Published by: {{ post.author }}</a><br>
<a>Published at: {{ post.published_date }}</a><br>
<a>Category: {{ post.category }}</a><br>
<a>Tag(s): {{ post.tag }}</a>
</div>
</div>
{% endfor %}
Post Model
...
#Post Model
class Post(models.Model):
author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
title = models.CharField(max_length=75)
content = models.TextField(max_length=10000)
tag = models.CharField(max_length=50, blank=True)
category = models.ForeignKey(Category, verbose_name="Category", on_delete=models.CASCADE, null=True)
postattachment = fields.FileField(upload_to='postattachment/%Y/%m/%d/', blank=True ,null=True)
postcover = fields.ImageField(upload_to='postcover/%Y/%m/%d/', null=True, dependencies=[
FileDependency(processor=ImageProcessor(
format='JPEG', scale={'max_width': 200, 'max_height': 200}))
])
created_date = models.DateField(auto_now_add=True)
published_date = models.DateField(blank=True, null=True)
def publish(self):
self.published_date = timezone.now()
self.save()
class Meta:
ordering = ["-title"]
def __str__(self):
return self.title
...
i guess im simply missing something at that point... I already read that this issue comes from local SQL database aka. SQLite, could that be true? Smb. has a solution? Thanks
After a bit of tinkering with a friend i found a solution, the Django Documentation according to vector searching is really not that good...
views.py
class globalsearch(ListView):
"""
Display a Post List page filtered by the search query.
"""
model = Post
paginate_by = 10
template_name = 'quickblog/search.html'
def get_queryset(self):
keywords = self.request.GET.get('q')
if keywords:
query = SearchQuery(keywords)
title_vector = SearchVector('title', weight='A')
content_vector = SearchVector('content', weight='B')
tag_vector = SearchVector('tag', weight='C')
vectors = title_vector + content_vector + tag_vector
qs = Post.objects.annotate(rank=SearchRank(vectors, query)).filter(rank__gte=0.1).order_by('-rank')
return qs
models.py
#Post Model
class Post(models.Model):
author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
title = models.CharField(max_length=75)
content = models.TextField(max_length=10000)
tag = models.CharField(max_length=50, blank=True)
category = models.ForeignKey(Category, verbose_name="Category", on_delete=models.CASCADE, null=True)
postattachment = fields.FileField(upload_to='postattachment/%Y/%m/%d/', blank=True ,null=True)
postcover = fields.ImageField(upload_to='postcover/%Y/%m/%d/', null=True, dependencies=[
FileDependency(processor=ImageProcessor(
format='JPEG', scale={'max_width': 200, 'max_height': 200}))
])
created_date = models.DateField(auto_now_add=True)
published_date = models.DateField(blank=True, null=True)
def publish(self):
self.published_date = timezone.now()
self.save()
class Meta:
ordering = ["-title"]
def __str__(self):
return self.title
search.html
{% extends 'quickblog/base.html' %}
{% block content %}
{% for post in object_list %}
<div class="post">
<h1><u><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title }}</a></u></h1>
<p>{{ post.content|linebreaksbr }}</p>
<div class="date">
<a>Published by: {{ post.author }}</a><br>
<a>Published at: {{ post.published_date }}</a><br>
<a>Category: {{ post.category }}</a><br>
<a>Tag(s): {{ post.tag }}</a>
</div>
</div>
{% endfor %}
{% if is_paginated %}
<ul class="pagination">
{% if page_obj.has_previous %}
<li><a href="?page={{ page_obj.previous_page_number }}">«</a></li>
{% else %}
<li class="disabled"><span>«</span></li>
{% endif %}
{% for i in paginator.page_range %}
{% if page_obj.number == i %}
<li class="active"><span>{{ i }} <span class="sr-only">(current)</span></span></li>
{% else %}
<li><a href="?page={{ i }}">{{ i }}</a></li>
{% endif %}
{% endfor %}
{% if page_obj.has_next %}
<li><a href="?page={{ page_obj.next_page_number }}">»</a></li>
{% else %}
<li class="disabled"><span>»</span></li>
{% endif %}
</ul>
{% endif %}
{% endblock %}
urls.py
url(r'^search/$', views.globalsearch.as_view(), name='search'),
Hope that i was able to help the next one with that Post :D