如何使用QuerySets和MySql“全文搜索”在多个字段中进行Django搜索？

我是Django新手,试图使用带有MyISAM引擎的MySql为我的项目创建一个“搜索”表单.到目前为止,我设法让表单工作,但Django似乎不会以相同的方式搜索所有字段.结果是随机的.例子：搜索区域返回没有结果或最糟糕的搜索描述工作正常,而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

这是我的观点：

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,{'form':form})

任何线索？

最佳答案

我建议你实现这个：

#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

并为每次搜索

 #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


和网址

 #urls.py
 url(r'^results/$','app.views.search_for_something',name='search_for_something'),

如何使用QuerySets和MySql“全文搜索”在多个字段中进行Django搜索？

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