我是Django新手，试图使用MySql和MyISAM引擎为我的项目创建“搜索”表单。到目前为止，我设法使表格起作用，但是Django似乎并没有以相同的方式搜索所有字段。结果是随机的。举例：搜索未region返回结果，或者最糟糕的搜索description工作正常，尽管howtogetin似乎不适用。
这是我的模型：
class Camp(models.Model):
owner = models.OneToOneField(User)
name = models.CharField(max_length=100)
description = models.TextField()
address1 = models.CharField(max_length=128)
address2 = models.CharField(max_length=128)
zipcode = models.CharField(max_length=128)
region = models.CharField(max_length=128)
country = models.CharField(max_length=128)
phone = models.CharField(max_length=60)
howtogetin = models.TextField()
def __str__(self):
return self.name
这是我的看法：
def campsearch(request):
if request.method == 'POST':
form = CampSearchForm(request.POST)
if form.is_valid():
terms = form.cleaned_data['search']
camps = Camp.objects.filter(
Q(name__search=terms)|
Q(description__search=terms)|
Q(address1__search=terms)|
Q(address2__search=terms)|
Q(zipcode__search=terms)|
Q(region__search=terms)|
Q(country__search=terms)|
Q(howtogetin__search=terms)
)
return render(request, 'campsearch.html', {'form':form, 'camps':camps})
else:
form = CampSearchForm()
return render(request, 'campsearch.html', {'form':form})
有什么线索吗？
我建议您实施此：
#views.py
def normalize_query(query_string,
findterms=re.compile(r'"([^"]+)"|(\S+)').findall,
normspace=re.compile(r'\s{2,}').sub):
'''
Splits the query string in invidual keywords, getting rid of unecessary spaces and grouping quoted words together.
Example:
>>> normalize_query(' some random words "with quotes " and spaces')
['some', 'random', 'words', 'with quotes', 'and', 'spaces']
'''
return [normspace(' ',(t[0] or t[1]).strip()) for t in findterms(query_string)]
def get_query(query_string, search_fields):
'''
Returns a query, that is a combination of Q objects.
That combination aims to search keywords within a model by testing the given search fields.
'''
query = None # Query to search for every search term
terms = normalize_query(query_string)
for term in terms:
or_query = None # Query to search for a given term in each field
for field_name in search_fields:
q = Q(**{"%s__icontains" % field_name: term})
if or_query is None:
or_query = q
else:
or_query = or_query | q
if query is None:
query = or_query
else:
query = query & or_query
return query
并且对于每个搜索
#views.py
def search_for_something(request):
query_string = ''
found_entries = None
if ('q' in request.GET) and request.GET['q'].strip():
query_string = request.GET['q']
entry_query = get_query(query_string, ['field1', 'field2', 'field3'])
found_entries = Model.objects.filter(entry_query).order_by('-something')
return render_to_response('app/template-result.html',
{ 'query_string': query_string, 'found_entries': found_entries },
context_instance=RequestContext(request)
)
并在模板中
#template.html
<form class="" method="get" action="{% url 'search_for_something' model.pk %}">
<input name="q" id="id_q" type="text" class="form-control" placeholder="Search" />
<button type="submit">Search</button>
</form>
#template-result.html
{% if found_entries %}
{% for field in found_entries %}
{{ model.field }}
{% endfor %}
{% endif %}
和网址
#urls.py
url(r'^results/$', 'app.views.search_for_something', name='search_for_something'),
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