124 lines
5 KiB
Python
124 lines
5 KiB
Python
import json
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from django.utils.html import escape
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from django import forms
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from django.core.urlresolvers import reverse as urlreverse
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import debug # pyflakes:ignore
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from ietf.person.models import Email, Person
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def tokeninput_id_name_json(objs):
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def format_email(e):
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return escape(u"%s <%s>" % (e.person.name, e.address))
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def format_person(p):
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return escape(p.name)
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formatter = format_email if objs and isinstance(objs[0], Email) else format_person
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return json.dumps([{ "id": o.pk, "name": formatter(o) } for o in objs if o])
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class AutocompletedPersonsField(forms.CharField):
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"""Tokenizing autocompleted multi-select field for choosing
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persons/emails or just persons using jquery.tokeninput.js.
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The field operates on either Email or Person models. In the case
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of Email models, the person name is shown next to the email address.
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The field uses a comma-separated list of primary keys in a
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CharField element as its API, the tokeninput Javascript adds some
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selection magic on top of this so we have to pass it a JSON
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representation of ids and user-understandable labels."""
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def __init__(self,
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max_entries=None, # max number of selected objs
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only_users=False, # only select persons who also have a user
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model=Person, # or Email
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hint_text="Type in name to search for person",
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*args, **kwargs):
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kwargs["max_length"] = 1000
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self.max_entries = max_entries
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self.only_users = only_users
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self.model = model
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super(AutocompletedPersonsField, self).__init__(*args, **kwargs)
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self.widget.attrs["class"] = "tokenized-field"
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self.widget.attrs["data-hint-text"] = hint_text
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if self.max_entries != None:
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self.widget.attrs["data-max-entries"] = self.max_entries
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def parse_tokenized_value(self, value):
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return [x.strip() for x in value.split(",") if x.strip()]
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def prepare_value(self, value):
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if not value:
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value = ""
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if isinstance(value, basestring):
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pks = self.parse_tokenized_value(value)
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value = self.model.objects.filter(pk__in=pks).select_related("person")
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if isinstance(value, self.model):
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value = [value]
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self.widget.attrs["data-pre"] = tokeninput_id_name_json(value)
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# doing this in the constructor is difficult because the URL
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# patterns may not have been fully constructed there yet
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self.widget.attrs["data-ajax-url"] = urlreverse("ajax_tokeninput_search", kwargs={ "model_name": self.model.__name__.lower() })
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if self.only_users:
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self.widget.attrs["data-ajax-url"] += "?user=1" # require a Datatracker account
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return ",".join(e.address for e in value)
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def clean(self, value):
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value = super(AutocompletedPersonsField, self).clean(value)
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pks = self.parse_tokenized_value(value)
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objs = self.model.objects.filter(pk__in=pks)
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if self.model == Email:
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objs = objs.exclude(person=None).select_related("person")
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# there are still a couple of active roles without accounts so don't disallow those yet
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#if self.only_users:
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# objs = objs.exclude(person__user=None)
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found_pks = [str(o.pk) for o in objs]
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failed_pks = [x for x in pks if x not in found_pks]
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if failed_pks:
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raise forms.ValidationError(u"Could not recognize the following {model_name}s: {pks}. You can only input {model_name}s already registered in the Datatracker.".format(pks=", ".join(failed_pks), model_name=self.model.__name__.lower()))
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if self.max_entries != None and len(objs) > self.max_entries:
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raise forms.ValidationError(u"You can select at most %s entries only." % self.max_entries)
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return objs
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class AutocompletedPersonField(AutocompletedPersonsField):
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"""Version of AutocompletedPersonsField specialized to a single object."""
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def __init__(self, *args, **kwargs):
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kwargs["max_entries"] = 1
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super(AutocompletedPersonField, self).__init__(*args, **kwargs)
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def clean(self, value):
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return super(AutocompletedPersonField, self).clean(value).first()
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class AutocompletedEmailsField(AutocompletedPersonsField):
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"""Version of AutocompletedPersonsField with the defaults right for Emails."""
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def __init__(self, model=Email, hint_text="Type in name or email to search for person and email address",
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*args, **kwargs):
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super(AutocompletedEmailsField, self).__init__(model=model, hint_text=hint_text, *args, **kwargs)
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class AutocompletedEmailField(AutocompletedEmailsField):
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"""Version of AutocompletedEmailsField specialized to a single object."""
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def __init__(self, *args, **kwargs):
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kwargs["max_entries"] = 1
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super(AutocompletedEmailField, self).__init__(*args, **kwargs)
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def clean(self, value):
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return super(AutocompletedEmailField, self).clean(value).first()
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