Re: How to make a query form depend on a field?
On Sep 26, 2011, at 5:06 PM, Doug Ballance wrote: > There are also a few third-party apps that can assist you with the > form->query process such as this one: > > https://github.com/alex/django-filter > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-users@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > Thanks, Doug. May be very useful if they start asking for more varied kinds of queries. So far I've only been given the first one, but I know more are coming. --David -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: How to make a query form depend on a field?
On Mon, Sep 26, 2011 at 11:59 PM, Tom Evans wrote: > On Mon, Sep 26, 2011 at 4:26 PM, David G. Pullman > wrote: >> Thanks very much for helping to separate the processing. I'm trying to >> implement a setup using your suggestions. I've hit a snag on a detail: >> >>> class SearchForm(forms.Form): >>> organization = forms.ModelField(Organization) >>> search_term = forms.CharField(max_length=100) >> >> What's a ModelField? I was unable to find it in a search on >> docs.djangoproject.com. I found it referred to in an abstract way on a >> google search, but not as an actual attribute name. >> > > 100% certain that was just a brain fade on Russell's part, it should > be forms.ModelChoiceField > > https://docs.djangoproject.com/en/1.3/ref/forms/fields/#modelchoicefield Gah - yes, you've correctly diagnosed my degenerative brain disorder... :-) Yours, Russ Magee %-) -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: How to make a query form depend on a field?
There are also a few third-party apps that can assist you with the form->query process such as this one: https://github.com/alex/django-filter -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: How to make a query form depend on a field?
On Sep 26, 2011, at 11:59 AM, Tom Evans wrote:
> 100% certain that was just a brain fade on Russell's part, it should
> be forms.ModelChoiceField
>
> https://docs.djangoproject.com/en/1.3/ref/forms/fields/#modelchoicefield
>
> Cheers
>
> Tom
>
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>
Russ and Tom,
Thanks to both of you. It's working. Here's what I did (Sdo is the
Organization):
# snip of models.py
class Sdo(models.Model):
name = models.CharField(max_length=255, unique=True)
background = models.TextField(blank=True, null=True)
address = models.CharField(max_length=255, blank=True, null=True)
phone = models.CharField(max_length=255, blank=True, null=True)
url = models.CharField(max_length=255, blank=True, null=True)
def __unicode__(self):
return self.name
class Document(models.Model):
number = models.CharField(max_length=255)
title = models.CharField(max_length=255)
edition = models.CharField(max_length=255)
scope = models.CharField(max_length=255, blank=True, null=True)
sdo = models.ForeignKey(Sdo)
class Meta:
unique_together = (('number', 'title', 'edition'),)
def __unicode__(self):
return u'%s %s %s' % (self.number, self.title, self.edition)
# snip from forms.py
class SearchForm(forms.Form):
sdo = forms.ModelChoiceField(queryset=Sdo.objects.all())
document_search_term = forms.CharField(max_length=100)
# snip from views.py
def search_form(request):
form = SearchForm(data=request.GET)
if form.is_valid():
sdo = form.cleaned_data['sdo']
document_search_term = form.cleaned_data['document_search_term']
documents = Document.objects.filter(sdo=sdo,
number__icontains=document_search_term)
results = RequestContext(request, {
'form': form,
'documents': documents,
'show_results': True
})
return render_to_response('search_form.html', results)
else:
return render_to_response('search_form.html', locals())
# contents of search_form.html
{% extends "base.html" %}
{% block external %}
{% endblock %}
{% block title %}SDO Search{% endblock %}
{% block head %}SDO Search{% endblock %}
{% block content %}
SDO
{{ form.sdo }}
Document Number
{{ form.document_search_term }}
{% if show_results %}
{% include "document_list.html" %}
{% endif %}
{% endblock %}
#contents of document_list.html
{% if documents %}
{% for document in documents %}
{{ document.number }}{{ document.title }}{{
document.edition }}
{% endfor %}
{% endif %}
There is a simple url.py entry for /search_form/. It provides a list of the
documents that have the sdo_id that matches the id field in Sdo for the
selected value of the Sdo name in the sdo field of the request.
I know some of this is goofy as I'm working from tuts and the examples in the
docs and such, but I would like to say that I'm impressed how relatively easy
it is to get something working in Django. Especially with such a helpful users
mailing list!
--David
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Re: How to make a query form depend on a field?
On Mon, Sep 26, 2011 at 4:26 PM, David G. Pullman wrote: > Thanks very much for helping to separate the processing. I'm trying to > implement a setup using your suggestions. I've hit a snag on a detail: > >> class SearchForm(forms.Form): >> organization = forms.ModelField(Organization) >> search_term = forms.CharField(max_length=100) > > What's a ModelField? I was unable to find it in a search on > docs.djangoproject.com. I found it referred to in an abstract way on a > google search, but not as an actual attribute name. > 100% certain that was just a brain fade on Russell's part, it should be forms.ModelChoiceField https://docs.djangoproject.com/en/1.3/ref/forms/fields/#modelchoicefield Cheers Tom -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: How to make a query form depend on a field?
On Sep 25, 2011, at 7:45 PM, Russell Keith-Magee wrote: > On Sun, Sep 25, 2011 at 9:00 PM, David wrote: >> I'm new to Django, gone through the django book and some >> documentation, but I can't find how to do this or if it's possible. >> >> I have a model that lists documents with title and edition. It also >> has a foreign key to an organization table. >> >> I'm trying to create a query form that first takes the name of the >> organization in one field, and they lets the user search by document >> title. The idea is to only show results in the document search that >> are from the organization. I'm not sure if this is something for the >> forms.py or if it's done in the view for the form. > > It sounds like you're getting a little tangled over what processing > should be handled where. > > A form retrieves inputs from the user. A query retrieves data from the > database. The view is a function that takes a request, from the user > and turns it into a response that can be rendered back to the user. > > So - for your purposes, you need a form to retrieve from the user the > organization they want to search, and the title of the document to > search for: > > class SearchForm(forms.Form): >organization = forms.ModelField(Organization) >search_term = forms.CharField(max_length=100) > > i.e., a form that lets you select an organization, and provide a block > of text for searching. > > Then, in your view, use the data from that form to issue a query: > > def my_view(request): >... >form = SearchForm(data=request.GET) >if form.is_valid(): >organzation = form.cleaned_data['organization'] >search_term = form.cleaned_data]['search_term'] >results = Document.objects.filter(organization=organization, > title__icontains=search_term) > > > At this point, results will contain the list of documents that are > from the selected organization, and has a title that is a > case-insensitive partial match for the search term. If you want > different matching criteria, alter the __icontains query term. > > The view requires a little more fleshing out, tool. Obviously, you'll > need to render `results` into a HTTPResponse. I've also assumed that > the query is being issued as a GET query -- which is possible, because > a search should be idempotent, but you *could* issue the search as a > POST, in which case the view handling will be slightly different. If > you're using the same view to present the original form *and* present > the results, you'll need to handle that case; you'll also need to > handle the case where the user doesn't provide a search term. > > Filling in these extra bits is left as an exercise for the reader :-) > Hopefully with the form/query/view thing clarified, the rest will fall > into place. If it doesn't, feel free to ask. > > Yours, > Russ Magee %-) > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-users@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > Russ, Thanks very much for helping to separate the processing. I'm trying to implement a setup using your suggestions. I've hit a snag on a detail: > class SearchForm(forms.Form): >organization = forms.ModelField(Organization) >search_term = forms.CharField(max_length=100) What's a ModelField? I was unable to find it in a search on docs.djangoproject.com. I found it referred to in an abstract way on a google search, but not as an actual attribute name. Thanks! David -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: How to make a query form depend on a field?
On Sun, Sep 25, 2011 at 9:00 PM, David wrote: > I'm new to Django, gone through the django book and some > documentation, but I can't find how to do this or if it's possible. > > I have a model that lists documents with title and edition. It also > has a foreign key to an organization table. > > I'm trying to create a query form that first takes the name of the > organization in one field, and they lets the user search by document > title. The idea is to only show results in the document search that > are from the organization. I'm not sure if this is something for the > forms.py or if it's done in the view for the form. It sounds like you're getting a little tangled over what processing should be handled where. A form retrieves inputs from the user. A query retrieves data from the database. The view is a function that takes a request, from the user and turns it into a response that can be rendered back to the user. So - for your purposes, you need a form to retrieve from the user the organization they want to search, and the title of the document to search for: class SearchForm(forms.Form): organization = forms.ModelField(Organization) search_term = forms.CharField(max_length=100) i.e., a form that lets you select an organization, and provide a block of text for searching. Then, in your view, use the data from that form to issue a query: def my_view(request): ... form = SearchForm(data=request.GET) if form.is_valid(): organzation = form.cleaned_data['organization'] search_term = form.cleaned_data]['search_term'] results = Document.objects.filter(organization=organization, title__icontains=search_term) At this point, results will contain the list of documents that are from the selected organization, and has a title that is a case-insensitive partial match for the search term. If you want different matching criteria, alter the __icontains query term. The view requires a little more fleshing out, tool. Obviously, you'll need to render `results` into a HTTPResponse. I've also assumed that the query is being issued as a GET query -- which is possible, because a search should be idempotent, but you *could* issue the search as a POST, in which case the view handling will be slightly different. If you're using the same view to present the original form *and* present the results, you'll need to handle that case; you'll also need to handle the case where the user doesn't provide a search term. Filling in these extra bits is left as an exercise for the reader :-) Hopefully with the form/query/view thing clarified, the rest will fall into place. If it doesn't, feel free to ask. Yours, Russ Magee %-) -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
How to make a query form depend on a field?
I'm new to Django, gone through the django book and some documentation, but I can't find how to do this or if it's possible. I have a model that lists documents with title and edition. It also has a foreign key to an organization table. I'm trying to create a query form that first takes the name of the organization in one field, and they lets the user search by document title. The idea is to only show results in the document search that are from the organization. I'm not sure if this is something for the forms.py or if it's done in the view for the form. The issue I seem to be stuck on is in the tutorials the queries (gets) are single valued and relatively simple. There are hints of things like querysets and Q that seem like they might do this, but I can't figure out how to tie the form to these functions? Any pointers to documentation or hints or snippets would be greatly appreciated. Thanks very much. --David -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
