From 8550161e531a603d57723850fb09c4c9b7ca60b9 Mon Sep 17 00:00:00 2001
From: Moritz Sichert <moritz.sichert@googlemail.com>
Date: Wed, 9 Sep 2015 15:09:59 +0200
Subject: [PATCH] Refs #25294 -- Moved BoundField to django.forms.boundfield.

---
 django/contrib/admin/utils.py          |   2 +-
 django/forms/__init__.py               |   1 +
 django/forms/boundfield.py             | 227 ++++++++++++++++++++++++
 django/forms/fields.py                 |   2 +-
 django/forms/forms.py                  | 230 +------------------------
 django/forms/utils.py                  |   7 +
 tests/forms_tests/tests/test_fields.py |   3 +
 7 files changed, 245 insertions(+), 227 deletions(-)
 create mode 100644 django/forms/boundfield.py

diff --git a/django/contrib/admin/utils.py b/django/contrib/admin/utils.py
index 88e422e40f..2337fe62a5 100644
--- a/django/contrib/admin/utils.py
+++ b/django/contrib/admin/utils.py
@@ -11,7 +11,7 @@ from django.db import models
 from django.db.models.constants import LOOKUP_SEP
 from django.db.models.deletion import Collector
 from django.db.models.sql.constants import QUERY_TERMS
-from django.forms.forms import pretty_name
+from django.forms.utils import pretty_name
 from django.utils import formats, six, timezone
 from django.utils.encoding import force_str, force_text, smart_text
 from django.utils.html import format_html
diff --git a/django/forms/__init__.py b/django/forms/__init__.py
index e0be2d164f..1c319219a6 100644
--- a/django/forms/__init__.py
+++ b/django/forms/__init__.py
@@ -3,6 +3,7 @@ Django validation and HTML form handling.
 """
 
 from django.core.exceptions import ValidationError  # NOQA
+from django.forms.boundfield import *  # NOQA
 from django.forms.fields import *  # NOQA
 from django.forms.forms import *  # NOQA
 from django.forms.formsets import *  # NOQA
diff --git a/django/forms/boundfield.py b/django/forms/boundfield.py
new file mode 100644
index 0000000000..bcfe2e2a2d
--- /dev/null
+++ b/django/forms/boundfield.py
@@ -0,0 +1,227 @@
+from __future__ import unicode_literals
+
+import datetime
+
+from django.forms.utils import flatatt, pretty_name
+from django.forms.widgets import Textarea, TextInput
+from django.utils import six
+from django.utils.encoding import (
+    force_text, python_2_unicode_compatible, smart_text,
+)
+from django.utils.html import conditional_escape, format_html, html_safe
+from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext_lazy as _
+
+__all__ = ('BoundField',)
+
+
+UNSET = object()
+
+
+@html_safe
+@python_2_unicode_compatible
+class BoundField(object):
+    "A Field plus data"
+    def __init__(self, form, field, name):
+        self.form = form
+        self.field = field
+        self.name = name
+        self.html_name = form.add_prefix(name)
+        self.html_initial_name = form.add_initial_prefix(name)
+        self.html_initial_id = form.add_initial_prefix(self.auto_id)
+        if self.field.label is None:
+            self.label = pretty_name(name)
+        else:
+            self.label = self.field.label
+        self.help_text = field.help_text or ''
+        self._initial_value = UNSET
+
+    def __str__(self):
+        """Renders this field as an HTML widget."""
+        if self.field.show_hidden_initial:
+            return self.as_widget() + self.as_hidden(only_initial=True)
+        return self.as_widget()
+
+    def __iter__(self):
+        """
+        Yields rendered strings that comprise all widgets in this BoundField.
+
+        This really is only useful for RadioSelect widgets, so that you can
+        iterate over individual radio buttons in a template.
+        """
+        id_ = self.field.widget.attrs.get('id') or self.auto_id
+        attrs = {'id': id_} if id_ else {}
+        for subwidget in self.field.widget.subwidgets(self.html_name, self.value(), attrs):
+            yield subwidget
+
+    def __len__(self):
+        return len(list(self.__iter__()))
+
+    def __getitem__(self, idx):
+        # Prevent unnecessary reevaluation when accessing BoundField's attrs
+        # from templates.
+        if not isinstance(idx, six.integer_types):
+            raise TypeError
+        return list(self.__iter__())[idx]
+
+    @property
+    def errors(self):
+        """
+        Returns an ErrorList for this field. Returns an empty ErrorList
+        if there are none.
+        """
+        return self.form.errors.get(self.name, self.form.error_class())
+
+    def as_widget(self, widget=None, attrs=None, only_initial=False):
+        """
+        Renders the field by rendering the passed widget, adding any HTML
+        attributes passed as attrs.  If no widget is specified, then the
+        field's default widget will be used.
+        """
+        if not widget:
+            widget = self.field.widget
+
+        if self.field.localize:
+            widget.is_localized = True
+
+        attrs = attrs or {}
+        if self.field.disabled:
+            attrs['disabled'] = True
+        auto_id = self.auto_id
+        if auto_id and 'id' not in attrs and 'id' not in widget.attrs:
+            if not only_initial:
+                attrs['id'] = auto_id
+            else:
+                attrs['id'] = self.html_initial_id
+
+        if not only_initial:
+            name = self.html_name
+        else:
+            name = self.html_initial_name
+        return force_text(widget.render(name, self.value(), attrs=attrs))
+
+    def as_text(self, attrs=None, **kwargs):
+        """
+        Returns a string of HTML for representing this as an <input type="text">.
+        """
+        return self.as_widget(TextInput(), attrs, **kwargs)
+
+    def as_textarea(self, attrs=None, **kwargs):
+        "Returns a string of HTML for representing this as a <textarea>."
+        return self.as_widget(Textarea(), attrs, **kwargs)
+
+    def as_hidden(self, attrs=None, **kwargs):
+        """
+        Returns a string of HTML for representing this as an <input type="hidden">.
+        """
+        return self.as_widget(self.field.hidden_widget(), attrs, **kwargs)
+
+    @property
+    def data(self):
+        """
+        Returns the data for this BoundField, or None if it wasn't given.
+        """
+        return self.field.widget.value_from_datadict(self.form.data, self.form.files, self.html_name)
+
+    def value(self):
+        """
+        Returns the value for this BoundField, using the initial value if
+        the form is not bound or the data otherwise.
+        """
+        if not self.form.is_bound:
+            data = self.form.initial.get(self.name, self.field.initial)
+            if callable(data):
+                if self._initial_value is not UNSET:
+                    data = self._initial_value
+                else:
+                    data = data()
+                    # If this is an auto-generated default date, nix the
+                    # microseconds for standardized handling. See #22502.
+                    if (isinstance(data, (datetime.datetime, datetime.time)) and
+                            not self.field.widget.supports_microseconds):
+                        data = data.replace(microsecond=0)
+                    self._initial_value = data
+        else:
+            data = self.field.bound_data(
+                self.data, self.form.initial.get(self.name, self.field.initial)
+            )
+        return self.field.prepare_value(data)
+
+    def label_tag(self, contents=None, attrs=None, label_suffix=None):
+        """
+        Wraps the given contents in a <label>, if the field has an ID attribute.
+        contents should be 'mark_safe'd to avoid HTML escaping. If contents
+        aren't given, uses the field's HTML-escaped label.
+
+        If attrs are given, they're used as HTML attributes on the <label> tag.
+
+        label_suffix allows overriding the form's label_suffix.
+        """
+        contents = contents or self.label
+        if label_suffix is None:
+            label_suffix = (self.field.label_suffix if self.field.label_suffix is not None
+                            else self.form.label_suffix)
+        # Only add the suffix if the label does not end in punctuation.
+        # Translators: If found as last label character, these punctuation
+        # characters will prevent the default label_suffix to be appended to the label
+        if label_suffix and contents and contents[-1] not in _(':?.!'):
+            contents = format_html('{}{}', contents, label_suffix)
+        widget = self.field.widget
+        id_ = widget.attrs.get('id') or self.auto_id
+        if id_:
+            id_for_label = widget.id_for_label(id_)
+            if id_for_label:
+                attrs = dict(attrs or {}, **{'for': id_for_label})
+            if self.field.required and hasattr(self.form, 'required_css_class'):
+                attrs = attrs or {}
+                if 'class' in attrs:
+                    attrs['class'] += ' ' + self.form.required_css_class
+                else:
+                    attrs['class'] = self.form.required_css_class
+            attrs = flatatt(attrs) if attrs else ''
+            contents = format_html('<label{}>{}</label>', attrs, contents)
+        else:
+            contents = conditional_escape(contents)
+        return mark_safe(contents)
+
+    def css_classes(self, extra_classes=None):
+        """
+        Returns a string of space-separated CSS classes for this field.
+        """
+        if hasattr(extra_classes, 'split'):
+            extra_classes = extra_classes.split()
+        extra_classes = set(extra_classes or [])
+        if self.errors and hasattr(self.form, 'error_css_class'):
+            extra_classes.add(self.form.error_css_class)
+        if self.field.required and hasattr(self.form, 'required_css_class'):
+            extra_classes.add(self.form.required_css_class)
+        return ' '.join(extra_classes)
+
+    @property
+    def is_hidden(self):
+        "Returns True if this BoundField's widget is hidden."
+        return self.field.widget.is_hidden
+
+    @property
+    def auto_id(self):
+        """
+        Calculates and returns the ID attribute for this BoundField, if the
+        associated Form has specified auto_id. Returns an empty string otherwise.
+        """
+        auto_id = self.form.auto_id
+        if auto_id and '%s' in smart_text(auto_id):
+            return smart_text(auto_id) % self.html_name
+        elif auto_id:
+            return self.html_name
+        return ''
+
+    @property
+    def id_for_label(self):
+        """
+        Wrapper around the field widget's `id_for_label` method.
+        Useful, for example, for focusing on this field regardless of whether
+        it has a single widget or a MultiWidget.
+        """
+        widget = self.field.widget
+        id_ = widget.attrs.get('id') or self.auto_id
+        return widget.id_for_label(id_)
diff --git a/django/forms/fields.py b/django/forms/fields.py
index 762d59c1b9..da90ab5175 100644
--- a/django/forms/fields.py
+++ b/django/forms/fields.py
@@ -18,6 +18,7 @@ from django.core import validators
 from django.core.exceptions import ValidationError
 # Provide this import for backwards compatibility.
 from django.core.validators import EMPTY_VALUES  # NOQA
+from django.forms.boundfield import BoundField
 from django.forms.utils import from_current_timezone, to_current_timezone
 from django.forms.widgets import (
     FILE_INPUT_CONTRADICTION, CheckboxInput, ClearableFileInput, DateInput,
@@ -209,7 +210,6 @@ class Field(six.with_metaclass(RenameFieldMethods, object)):
         Return a BoundField instance that will be used when accessing the form
         field in a template.
         """
-        from django.forms.forms import BoundField
         return BoundField(form, self, field_name)
 
     def __deepcopy__(self, memo):
diff --git a/django/forms/forms.py b/django/forms/forms.py
index 07415f8fe1..a6cedd83be 100644
--- a/django/forms/forms.py
+++ b/django/forms/forms.py
@@ -5,34 +5,23 @@ Form classes
 from __future__ import unicode_literals
 
 import copy
-import datetime
 from collections import OrderedDict
 
 from django.core.exceptions import NON_FIELD_ERRORS, ValidationError
 from django.forms.fields import Field, FileField
-from django.forms.utils import ErrorDict, ErrorList, flatatt
-from django.forms.widgets import Media, MediaDefiningClass, Textarea, TextInput
+# pretty_name is imported for backwards compatibility in Django 1.9
+from django.forms.utils import ErrorDict, ErrorList, pretty_name  # NOQA
+from django.forms.widgets import Media, MediaDefiningClass
 from django.utils import six
-from django.utils.encoding import (
-    force_text, python_2_unicode_compatible, smart_text,
-)
+from django.utils.encoding import force_text, python_2_unicode_compatible
 from django.utils.functional import cached_property
-from django.utils.html import conditional_escape, format_html, html_safe
+from django.utils.html import conditional_escape, html_safe
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext as _
 
 __all__ = ('BaseForm', 'Form')
 
 
-def pretty_name(name):
-    """Converts 'first_name' to 'First name'"""
-    if not name:
-        return ''
-    return name.replace('_', ' ').capitalize()
-
-UNSET = object()
-
-
 class DeclarativeFieldsMetaclass(MediaDefiningClass):
     """
     Metaclass that collects Fields declared on the base classes.
@@ -491,212 +480,3 @@ class Form(six.with_metaclass(DeclarativeFieldsMetaclass, BaseForm)):
     # fancy metaclass stuff purely for the semantic sugar -- it allows one
     # to define a form using declarative syntax.
     # BaseForm itself has no way of designating self.fields.
-
-
-@html_safe
-@python_2_unicode_compatible
-class BoundField(object):
-    "A Field plus data"
-    def __init__(self, form, field, name):
-        self.form = form
-        self.field = field
-        self.name = name
-        self.html_name = form.add_prefix(name)
-        self.html_initial_name = form.add_initial_prefix(name)
-        self.html_initial_id = form.add_initial_prefix(self.auto_id)
-        if self.field.label is None:
-            self.label = pretty_name(name)
-        else:
-            self.label = self.field.label
-        self.help_text = field.help_text or ''
-        self._initial_value = UNSET
-
-    def __str__(self):
-        """Renders this field as an HTML widget."""
-        if self.field.show_hidden_initial:
-            return self.as_widget() + self.as_hidden(only_initial=True)
-        return self.as_widget()
-
-    def __iter__(self):
-        """
-        Yields rendered strings that comprise all widgets in this BoundField.
-
-        This really is only useful for RadioSelect widgets, so that you can
-        iterate over individual radio buttons in a template.
-        """
-        id_ = self.field.widget.attrs.get('id') or self.auto_id
-        attrs = {'id': id_} if id_ else {}
-        for subwidget in self.field.widget.subwidgets(self.html_name, self.value(), attrs):
-            yield subwidget
-
-    def __len__(self):
-        return len(list(self.__iter__()))
-
-    def __getitem__(self, idx):
-        # Prevent unnecessary reevaluation when accessing BoundField's attrs
-        # from templates.
-        if not isinstance(idx, six.integer_types):
-            raise TypeError
-        return list(self.__iter__())[idx]
-
-    @property
-    def errors(self):
-        """
-        Returns an ErrorList for this field. Returns an empty ErrorList
-        if there are none.
-        """
-        return self.form.errors.get(self.name, self.form.error_class())
-
-    def as_widget(self, widget=None, attrs=None, only_initial=False):
-        """
-        Renders the field by rendering the passed widget, adding any HTML
-        attributes passed as attrs.  If no widget is specified, then the
-        field's default widget will be used.
-        """
-        if not widget:
-            widget = self.field.widget
-
-        if self.field.localize:
-            widget.is_localized = True
-
-        attrs = attrs or {}
-        if self.field.disabled:
-            attrs['disabled'] = True
-        auto_id = self.auto_id
-        if auto_id and 'id' not in attrs and 'id' not in widget.attrs:
-            if not only_initial:
-                attrs['id'] = auto_id
-            else:
-                attrs['id'] = self.html_initial_id
-
-        if not only_initial:
-            name = self.html_name
-        else:
-            name = self.html_initial_name
-        return force_text(widget.render(name, self.value(), attrs=attrs))
-
-    def as_text(self, attrs=None, **kwargs):
-        """
-        Returns a string of HTML for representing this as an <input type="text">.
-        """
-        return self.as_widget(TextInput(), attrs, **kwargs)
-
-    def as_textarea(self, attrs=None, **kwargs):
-        "Returns a string of HTML for representing this as a <textarea>."
-        return self.as_widget(Textarea(), attrs, **kwargs)
-
-    def as_hidden(self, attrs=None, **kwargs):
-        """
-        Returns a string of HTML for representing this as an <input type="hidden">.
-        """
-        return self.as_widget(self.field.hidden_widget(), attrs, **kwargs)
-
-    @property
-    def data(self):
-        """
-        Returns the data for this BoundField, or None if it wasn't given.
-        """
-        return self.field.widget.value_from_datadict(self.form.data, self.form.files, self.html_name)
-
-    def value(self):
-        """
-        Returns the value for this BoundField, using the initial value if
-        the form is not bound or the data otherwise.
-        """
-        if not self.form.is_bound:
-            data = self.form.initial.get(self.name, self.field.initial)
-            if callable(data):
-                if self._initial_value is not UNSET:
-                    data = self._initial_value
-                else:
-                    data = data()
-                    # If this is an auto-generated default date, nix the
-                    # microseconds for standardized handling. See #22502.
-                    if (isinstance(data, (datetime.datetime, datetime.time)) and
-                            not self.field.widget.supports_microseconds):
-                        data = data.replace(microsecond=0)
-                    self._initial_value = data
-        else:
-            data = self.field.bound_data(
-                self.data, self.form.initial.get(self.name, self.field.initial)
-            )
-        return self.field.prepare_value(data)
-
-    def label_tag(self, contents=None, attrs=None, label_suffix=None):
-        """
-        Wraps the given contents in a <label>, if the field has an ID attribute.
-        contents should be 'mark_safe'd to avoid HTML escaping. If contents
-        aren't given, uses the field's HTML-escaped label.
-
-        If attrs are given, they're used as HTML attributes on the <label> tag.
-
-        label_suffix allows overriding the form's label_suffix.
-        """
-        contents = contents or self.label
-        if label_suffix is None:
-            label_suffix = (self.field.label_suffix if self.field.label_suffix is not None
-                            else self.form.label_suffix)
-        # Only add the suffix if the label does not end in punctuation.
-        # Translators: If found as last label character, these punctuation
-        # characters will prevent the default label_suffix to be appended to the label
-        if label_suffix and contents and contents[-1] not in _(':?.!'):
-            contents = format_html('{}{}', contents, label_suffix)
-        widget = self.field.widget
-        id_ = widget.attrs.get('id') or self.auto_id
-        if id_:
-            id_for_label = widget.id_for_label(id_)
-            if id_for_label:
-                attrs = dict(attrs or {}, **{'for': id_for_label})
-            if self.field.required and hasattr(self.form, 'required_css_class'):
-                attrs = attrs or {}
-                if 'class' in attrs:
-                    attrs['class'] += ' ' + self.form.required_css_class
-                else:
-                    attrs['class'] = self.form.required_css_class
-            attrs = flatatt(attrs) if attrs else ''
-            contents = format_html('<label{}>{}</label>', attrs, contents)
-        else:
-            contents = conditional_escape(contents)
-        return mark_safe(contents)
-
-    def css_classes(self, extra_classes=None):
-        """
-        Returns a string of space-separated CSS classes for this field.
-        """
-        if hasattr(extra_classes, 'split'):
-            extra_classes = extra_classes.split()
-        extra_classes = set(extra_classes or [])
-        if self.errors and hasattr(self.form, 'error_css_class'):
-            extra_classes.add(self.form.error_css_class)
-        if self.field.required and hasattr(self.form, 'required_css_class'):
-            extra_classes.add(self.form.required_css_class)
-        return ' '.join(extra_classes)
-
-    @property
-    def is_hidden(self):
-        "Returns True if this BoundField's widget is hidden."
-        return self.field.widget.is_hidden
-
-    @property
-    def auto_id(self):
-        """
-        Calculates and returns the ID attribute for this BoundField, if the
-        associated Form has specified auto_id. Returns an empty string otherwise.
-        """
-        auto_id = self.form.auto_id
-        if auto_id and '%s' in smart_text(auto_id):
-            return smart_text(auto_id) % self.html_name
-        elif auto_id:
-            return self.html_name
-        return ''
-
-    @property
-    def id_for_label(self):
-        """
-        Wrapper around the field widget's `id_for_label` method.
-        Useful, for example, for focusing on this field regardless of whether
-        it has a single widget or a MultiWidget.
-        """
-        widget = self.field.widget
-        id_ = widget.attrs.get('id') or self.auto_id
-        return widget.id_for_label(id_)
diff --git a/django/forms/utils.py b/django/forms/utils.py
index 3d87afd8c9..dc4df86058 100644
--- a/django/forms/utils.py
+++ b/django/forms/utils.py
@@ -16,6 +16,13 @@ except ImportError:  # Python 2
     from UserList import UserList
 
 
+def pretty_name(name):
+    """Converts 'first_name' to 'First name'"""
+    if not name:
+        return ''
+    return name.replace('_', ' ').capitalize()
+
+
 def flatatt(attrs):
     """
     Convert a dictionary of attributes to a single string.
diff --git a/tests/forms_tests/tests/test_fields.py b/tests/forms_tests/tests/test_fields.py
index 5e4b4269db..9606246bf6 100644
--- a/tests/forms_tests/tests/test_fields.py
+++ b/tests/forms_tests/tests/test_fields.py
@@ -1515,6 +1515,7 @@ class FieldsTests(SimpleTestCase):
         f.choices.sort()
         expected = [
             ('/django/forms/__init__.py', '__init__.py'),
+            ('/django/forms/boundfield.py', 'boundfield.py'),
             ('/django/forms/fields.py', 'fields.py'),
             ('/django/forms/forms.py', 'forms.py'),
             ('/django/forms/formsets.py', 'formsets.py'),
@@ -1538,6 +1539,7 @@ class FieldsTests(SimpleTestCase):
         f.choices.sort()
         expected = [
             ('/django/forms/__init__.py', '__init__.py'),
+            ('/django/forms/boundfield.py', 'boundfield.py'),
             ('/django/forms/fields.py', 'fields.py'),
             ('/django/forms/forms.py', 'forms.py'),
             ('/django/forms/formsets.py', 'formsets.py'),
@@ -1556,6 +1558,7 @@ class FieldsTests(SimpleTestCase):
         f.choices.sort()
         expected = [
             ('/django/forms/__init__.py', '__init__.py'),
+            ('/django/forms/boundfield.py', 'boundfield.py'),
             ('/django/forms/extras/__init__.py', 'extras/__init__.py'),
             ('/django/forms/extras/widgets.py', 'extras/widgets.py'),
             ('/django/forms/fields.py', 'fields.py'),