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diff --git a/docs/.svn/all-wcprops b/docs/.svn/all-wcprops deleted file mode 100644 index 6104b64..0000000 --- a/docs/.svn/all-wcprops +++ /dev/null @@ -1,11 +0,0 @@ -K 25 -svn:wc:ra_dav:version-url -V 28 -/svn/!svn/ver/133/trunk/docs -END -overview.txt -K 25 -svn:wc:ra_dav:version-url -V 41 -/svn/!svn/ver/133/trunk/docs/overview.txt -END diff --git a/docs/.svn/entries b/docs/.svn/entries deleted file mode 100644 index 643c736..0000000 --- a/docs/.svn/entries +++ /dev/null @@ -1,62 +0,0 @@ -9 - -dir -147 -http://django-tagging.googlecode.com/svn/trunk/docs -http://django-tagging.googlecode.com/svn - - - -2008-04-30T22:29:01.189094Z -133 -jonathan.buchanan - - -svn:special svn:externals svn:needs-lock - - - - - - - - - - - -83e7428b-ec2a-0410-86f2-bf466d0e5e72 - -overview.txt -file - - - - -2008-08-21T18:05:41.000000Z -6ff98ba2ec163f1556bc41693647443a -2008-04-30T22:29:01.189094Z -133 -jonathan.buchanan -has-props - - - - - - - - - - - - - - - - - - - - -29385 - diff --git a/docs/.svn/format b/docs/.svn/format deleted file mode 100644 index ec63514..0000000 --- a/docs/.svn/format +++ /dev/null @@ -1 +0,0 @@ -9 diff --git a/docs/.svn/prop-base/overview.txt.svn-base b/docs/.svn/prop-base/overview.txt.svn-base deleted file mode 100644 index bdbd305..0000000 --- a/docs/.svn/prop-base/overview.txt.svn-base +++ /dev/null @@ -1,5 +0,0 @@ -K 13 -svn:eol-style -V 6 -native -END diff --git a/docs/.svn/text-base/overview.txt.svn-base b/docs/.svn/text-base/overview.txt.svn-base deleted file mode 100644 index 9641f03..0000000 --- a/docs/.svn/text-base/overview.txt.svn-base +++ /dev/null @@ -1,912 +0,0 @@ -============== -Django Tagging -============== - -A generic tagging application for `Django`_ projects, which allows -association of a number of tags with any Django model instance and makes -retrieval of tags simple. - -.. _`Django`: http://www.djangoproject.com - -.. contents:: - :depth: 3 - - -Installation -============ - -Installing an official release ------------------------------- - -Official releases are made available from -http://code.google.com/p/django-tagging/ - -Source distribution -~~~~~~~~~~~~~~~~~~~ - -Download the .zip distribution file and unpack it. Inside is a script -named ``setup.py``. Enter this command:: - - python setup.py install - -...and the package will install automatically. - -Windows installer -~~~~~~~~~~~~~~~~~ - -A Windows installer is also made available - download the .exe -distribution file and launch it to install the application. - -An uninstaller will also be created, accessible through Add/Remove -Programs in your Control Panel. - -Installing the development version ----------------------------------- - -Alternatively, if you'd like to update Django Tagging occasionally to pick -up the latest bug fixes and enhancements before they make it into an -official release, perform a `Subversion`_ checkout instead. The following -command will check the application's development branch out to an -``tagging-trunk`` directory:: - - svn checkout http://django-tagging.googlecode.com/svn/trunk/ tagging-trunk - -Add the resulting folder to your `PYTHONPATH`_ or symlink (`junction`_, -if you're on Windows) the ``tagging`` directory inside it into a -directory which is on your PYTHONPATH, such as your Python -installation's ``site-packages`` directory. - -You can verify that the application is available on your PYTHONPATH by -opening a Python interpreter and entering the following commands:: - - >>> import tagging - >>> tagging.VERSION - (0, 3, 'pre') - -When you want to update your copy of the Django Tagging source code, run -the command ``svn update`` from within the ``tagging-trunk`` directory. - -.. caution:: - - The development version may contain bugs which are not present in the - release version and introduce backwards-incompatible changes. - - If you're tracking trunk, keep an eye on the `CHANGELOG`_ and the - `backwards-incompatible changes wiki page`_ before you update your - copy of the source code. - -.. _`Subversion`: http://subversion.tigris.org -.. _`PYTHONPATH`: http://docs.python.org/tut/node8.html#SECTION008110000000000000000 -.. _`junction`: http://www.microsoft.com/technet/sysinternals/FileAndDisk/Junction.mspx -.. _`CHANGELOG`: http://django-tagging.googlecode.com/svn/trunk/CHANGELOG.txt -.. _`backwards-incompatible changes wiki page`: http://code.google.com/p/django-tagging/wiki/BackwardsIncompatibleChanges - -Using Django Tagging in your applications ------------------------------------------ - -Once you've installed Django Tagging and want to use it in your Django -applications, do the following: - - 1. Put ``'tagging'`` in your ``INSTALLED_APPS`` setting. - 2. Run the command ``manage.py syncdb``. - -The ``syncdb`` command creates the necessary database tables and -creates permission objects for all installed apps that need them. - -That's it! - - -Settings -======== - -Some of the application's behaviour can be configured by adding the -appropriate settings to your project's settings file. - -The following settings are available: - -FORCE_LOWERCASE_TAGS --------------------- - -Default: ``False`` - -A boolean that turns on/off forcing of all tag names to lowercase before -they are saved to the database. - -MAX_TAG_LENGTH --------------- - -Default: ``50`` - -An integer which specifies the maximum length which any tag is allowed -to have. This is used for validation in the ``django.contrib.admin`` -application and in any ``newforms`` forms automatically generated using -``ModelForm``. - - -Registering your models -======================= - -**New in developement version** - -Your Django models can be registered with the tagging application to -access some additional tagging-related features. - -.. note:: - - You don't *have* to register your models in order to use them with - the tagging application - many of the features added by registration - are just convenience wrappers around the tagging API provided by the - ``Tag`` and ``TaggedItem`` models and their managers, as documented - further below. - -The ``register`` function -------------------------- - -To register a model, import the ``tagging`` module and call its -``register`` function, like so:: - - from django.db import models - - import tagging - - class Widget(models.Model): - name = models.CharField(max_length=50) - - tagging.register(Widget) - -The following argument is required: - -``model`` - The model class to be registered. - - An exception will be raised if you attempt to register the same class - more than once. - -The following arguments are optional, with some recommended defaults - -take care to specify different attribute names if the defaults clash -with your model class' definition: - -``tag_descriptor_attr`` - The name of an attribute in the model class which will hold a tag - descriptor for the model. Default: ``'tags'`` - - See `TagDescriptor`_ below for details about the use of this - descriptor. - -``tagged_item_manger_attr`` - The name of an attribute in the model class which will hold a custom - manager for accessing tagged items for the model. Default: - ``'tagged'``. - - See `ModelTaggedItemManager`_ below for details about the use of this - manager. - -``TagDescriptor`` ------------------ - -When accessed through the model class itself, this descriptor will return -a ``ModelTagManager`` for the model. See `ModelTagManager`_ below for -more details about its use. - -When accessed through a model instance, this descriptor provides a handy -means of retrieving, updating and deleting the instance's tags. For -example:: - - >>> widget = Widget.objects.create(name='Testing descriptor') - >>> widget.tags - [] - >>> widget.tags = 'toast, melted cheese, butter' - >>> widget.tags - [<Tag: butter>, <Tag: melted cheese>, <Tag: toast>] - >>> del widget.tags - >>> widget.tags - [] - -``ModelTagManager`` -------------------- - -A manager for retrieving tags used by a particular model. - -Defines the following methods: - -* ``get_query_set()`` -- as this method is redefined, any ``QuerySets`` - created by this model will be initially restricted to contain the - distinct tags used by all the model's instances. - -* ``cloud(*args, **kwargs)`` -- creates a list of tags used by the - model's instances, with ``count`` and ``font_size`` attributes set for - use in displaying a tag cloud. - - See the documentation on ``Tag``'s manager's `cloud_for_model method`_ - for information on additional arguments which can be given. - -* ``related(self, tags, *args, **kwargs)`` -- creates a list of tags - used by the model's instances, which are also used by all instance - which have the given ``tags``. - - See the documentation on ``Tag``'s manager's - `related_for_model method`_ for information on additional arguments - which can be given. - -* ``usage(self, *args, **kwargs))`` -- creates a list of tags used by - the model's instances, with optional usages counts, restriction based - on usage counts and restriction of the model instances from which - usage and counts are determined. - - See the documentation on ``Tag``'s manager's `usage_for_model method`_ - for information on additional arguments which can be given. - -Example usage:: - - # Create a ``QuerySet`` of tags used by Widget instances - Widget.tags.all() - - # Retrieve a list of tags used by Widget instances with usage counts - Widget.tags.usage(counts=True) - - # Retrieve tags used by instances of WIdget which are also tagged with - # 'cheese' and 'toast' - Widget.tags.related(['cheese', 'toast'], counts=True, min_count=3) - -``ModelTaggedItemManager`` --------------------------- - -A manager for retrieving model instance for a particular model, based on -their tags. - -* ``related_to(obj, queryset=None, num=None)`` -- creates a list - of model instances which are related to ``obj``, based on its tags. If - a ``queryset`` argument is provided, it will be used to restrict the - resulting list of model instances. - - If ``num`` is given, a maximum of ``num`` instances will be returned. - -* ``with_all(tags, queryset=None)`` -- creates a ``QuerySet`` containing - model instances which are tagged with *all* the given tags. If a - ``queryset`` argument is provided, it will be used as the basis for - the resulting ``QuerySet``. - -* ``with_any(tags, queryset=None)`` -- creates a ``QuerySet`` containing model - instances which are tagged with *any* the given tags. If a ``queryset`` - argument is provided, it will be used as the basis for the resulting - ``QuerySet``. - - -Tags -==== - -Tags are represented by the ``Tag`` model, which lives in the -``tagging.models`` module. - -API reference -------------- - -Fields -~~~~~~ - -``Tag`` objects have the following fields: - -* ``name`` -- The name of the tag. This is a unique value. - -Manager functions -~~~~~~~~~~~~~~~~~ - -The ``Tag`` model has a custom manager which has the following helper -methods: - -* ``update_tags(obj, tag_names)`` -- updates tags associated with an - object. - - ``tag_names`` is a string containing tag names with which ``obj`` - should be tagged. - - If ``tag_names`` is ``None`` or ``''``, the object's tags will be - cleared. - -* ``add_tag(obj, tag_name)`` -- associates a tag with an an object. - - ``tag_name`` is a string containing a tag name with which ``obj`` - should be tagged. - -* ``get_for_object(obj)`` -- returns a ``QuerySet`` containing all - ``Tag`` objects associated with ``obj``. - -.. _`usage_for_model method`: - -* ``usage_for_model(model, counts=False, min_count=None, filters=None)`` - -- returns a list of ``Tag`` objects associated with instances of - ``model``. - - If ``counts`` is ``True``, a ``count`` attribute will be added to each - tag, indicating how many times it has been associated with instances - of ``model``. - - If ``min_count`` is given, only tags which have a ``count`` greater - than or equal to ``min_count`` will be returned. Passing a value for - ``min_count`` implies ``counts=True``. - - To limit the tags (and counts, if specified) returned to those used by - a subset of the model's instances, pass a dictionary of field lookups - to be applied to ``model`` as the ``filters`` argument. - -.. _`related_for_model method`: - -* ``related_for_model(tags, Model, counts=False, min_count=None)`` - -- returns a list of tags related to a given list of tags - that is, - other tags used by items which have all the given tags. - - If ``counts`` is ``True``, a ``count`` attribute will be added to each - tag, indicating the number of items which have it in addition to the - given list of tags. - - If ``min_count`` is given, only tags which have a ``count`` greater - than or equal to ``min_count`` will be returned. Passing a value for - ``min_count`` implies ``counts=True``. - -.. _`cloud_for_model method`: - -* ``cloud_for_model(Model, steps=4, distribution=LOGARITHMIC, - filters=None, min_count=None)`` -- returns a list of the distinct - ``Tag`` objects associated with instances of ``Model``, each having a - ``count`` attribute as above and an additional ``font_size`` - attribute, for use in creation of a tag cloud (a type of weighted - list). - - ``steps`` defines the number of font sizes available - ``font_size`` - may be an integer between ``1`` and ``steps``, inclusive. - - ``distribution`` defines the type of font size distribution algorithm - which will be used - logarithmic or linear. It must be either - ``tagging.utils.LOGARITHMIC`` or ``tagging.utils.LINEAR``. - - To limit the tags displayed in the cloud to those associated with a - subset of the Model's instances, pass a dictionary of field lookups to - be applied to the given Model as the ``filters`` argument. - - To limit the tags displayed in the cloud to those with a ``count`` - greater than or equal to ``min_count``, pass a value for the - ``min_count`` argument. - -**New in development version** - -* ``usage_for_queryset(queryset, counts=False, min_count=None)`` -- - Obtains a list of tags associated with instances of a model contained - in the given queryset. - - If ``counts`` is True, a ``count`` attribute will be added to each tag, - indicating how many times it has been used against the Model class in - question. - - If ``min_count`` is given, only tags which have a ``count`` greater - than or equal to ``min_count`` will be returned. - - Passing a value for ``min_count`` implies ``counts=True``. - -Basic usage ------------ - -Tagging objects and retrieving an object's tags -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Objects may be tagged using the ``update_tags`` helper function:: - - >>> from shop.apps.products.models import Widget - >>> from tagging.models import Tag - >>> widget = Widget.objects.get(pk=1) - >>> Tag.objects.update_tags(widget, 'house thing') - -Retrieve tags for an object using the ``get_for_object`` helper -function:: - - >>> Tag.objects.get_for_object(widget) - [<Tag: house>, <Tag: thing>] - -Tags are created, associated and unassociated accordingly when you use -``update_tags`` and ``add_tags``:: - - >>> Tag.objects.update_tags(widget, 'house monkey') - >>> Tag.objects.get_for_object(widget) - [<Tag: house>, <Tag: monkey>] - >>> Tag.objects.add_tag(widget, 'tiles') - >>> Tag.objects.get_for_object(widget) - [<Tag: house>, <Tag: monkey>, <Tag: tiles>] - -Clear an object's tags by passing ``None`` or ``''`` to -``update_tags``:: - - >>> Tag.objects.update_tags(widget, None) - >>> Tag.objects.get_for_object(widget) - [] - -Retrieving tags used by a particular model -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -To retrieve all tags used for a particular model, use the -``get_for_model`` helper function:: - - >>> widget1 = Widget.objects.get(pk=1) - >>> Tag.objects.update_tags(widget1, 'house thing') - >>> widget2 = Widget.objects.get(pk=2) - >>> Tag.objects.update_tags(widget2, 'cheese toast house') - >>> Tag.objects.usage_for_model(Widget) - [<Tag: cheese>, <Tag: house>, <Tag: thing>, <Tag: toast>] - -To get a count of how many times each tag was used for a particular -model, pass in ``True`` for the ``counts`` argument:: - - >>> tags = Tag.objects.usage_for_model(Widget, counts=True) - >>> [(tag.name, tag.count) for tag in tags] - [('cheese', 1), ('house', 2), ('thing', 1), ('toast', 1)] - -To get counts and limit the tags returned to those with counts above a -certain size, pass in a ``min_count`` argument:: - - >>> tags = Tag.objects.usage_for_model(Widget, min_count=2) - >>> [(tag.name, tag.count) for tag in tags] - [('house', 2)] - -You can also specify a dictionary of `field lookups`_ to be used to -restrict the tags and counts returned based on a subset of the -model's instances. For example, the following would retrieve all tags -used on Widgets created by a user named Alan which have a size -greater than 99:: - - >>> Tag.objects.usage_for_model(Widget, filters=dict(size__gt=99, user__username='Alan')) - -.. _`field lookups`: http://www.djangoproject.com/documentation/db-api/#field-lookups - -**New in development version** - -The ``usage_for_queryset`` method allows you to pass a pre-filtered -queryset to be used when determining tag usage:: - - >>> Tag.objects.usage_for_queryset(Widget.objects.filter(size__gt=99, user__username='Alan')) - -Tag input ---------- - -Tag input from users is treated as follows: - -* If the input doesn't contain any commas or double quotes, it is simply - treated as a space-delimited list of tag names. - -* If the input does contain either of these characters, we parse the - input like so: - - * Groups of characters which appear between double quotes take - precedence as multi-word tags (so double quoted tag names may - contain commas). An unclosed double quote will be ignored. - - * For the remaining input, if there are any unquoted commas in the - input, the remainder will be treated as comma-delimited. Otherwise, - it will be treated as space-delimited. - -Examples: - -====================== ======================================= ================================================ -Tag input string Resulting tags Notes -====================== ======================================= ================================================ -apple ball cat [``apple``], [``ball``], [``cat``] No commas, so space delimited -apple, ball cat [``apple``], [``ball cat``] Comma present, so comma delimited -"apple, ball" cat dog [``apple, ball``], [``cat``], [``dog``] All commas are quoted, so space delimited -"apple, ball", cat dog [``apple, ball``], [``cat dog``] Contains an unquoted comma, so comma delimited -apple "ball cat" dog [``apple``], [``ball cat``], [``dog``] No commas, so space delimited -"apple" "ball dog [``apple``], [``ball``], [``dog``] Unclosed double quote is ignored -====================== ======================================= ================================================ - - -Tagged items -============ - -The relationship between a ``Tag`` and an object is represented by -the ``TaggedItem`` model, which lives in the ``tagging.models`` -module. - -API reference -------------- - -Fields -~~~~~~ - -``TaggedItem`` objects have the following fields: - -* ``tag`` -- The ``Tag`` an object is associated with. -* ``content_type`` -- The ``ContentType`` of the associated model - instance. -* ``object_id`` -- The id of the associated object. -* ``object`` -- The associated object itself, accessible via the - Generic Relations API. - -Manager functions -~~~~~~~~~~~~~~~~~ - -The ``TaggedItem`` model has a custom manager which has the following -helper methods, which accept either a ``QuerySet`` or a ``Model`` -class as one of their arguments. To restrict the objects which are -returned, pass in a filtered ``QuerySet`` for this argument: - -* ``get_by_model(queryset_or_model, tag)`` -- creates a ``QuerySet`` - containing instances of the specififed model which are tagged with - the given tag or tags. - -* ``get_intersection_by_model(queryset_or_model, tags)`` -- creates a - ``QuerySet`` containing instances of the specified model which are - tagged with every tag in a list of tags. - - ``get_by_model`` will call this function behind the scenes when you - pass it a list, so you can use ``get_by_model`` instead of calling - this method directly. - -* ``get_union_by_model(queryset_or_model, tags)`` -- creates a - ``QuerySet`` containing instances of the specified model which are - tagged with any tag in a list of tags. - -.. _`get_related method`: - -* ``get_related(obj, queryset_or_model, num=None)`` - returns a list of - instances of the specified model which share tags with the model - instance ``obj``, ordered by the number of shared tags in descending - order. - - If ``num`` is given, a maximum of ``num`` instances will be returned. - -Basic usage ------------ - -Retrieving tagged objects -~~~~~~~~~~~~~~~~~~~~~~~~~ - -Objects may be retrieved based on their tags using the ``get_by_model`` -manager method:: - - >>> from shop.apps.products.models import Widget - >>> from tagging.models import Tag - >>> house_tag = Tag.objects.get(name='house') - >>> TaggedItem.objects.get_by_model(Widget, house_tag) - [<Widget: pk=1>, <Widget: pk=2>] - -Passing a list of tags to ``get_by_model`` returns an intersection of -objects which have those tags, i.e. tag1 AND tag2 ... AND tagN:: - - >>> thing_tag = Tag.objects.get(name='thing') - >>> TaggedItem.objects.get_by_model(Widget, [house_tag, thing_tag]) - [<Widget: pk=1>] - -Functions which take tags are flexible when it comes to tag input:: - - >>> TaggedItem.objects.get_by_model(Widget, Tag.objects.filter(name__in=['house', 'thing'])) - [<Widget: pk=1>] - >>> TaggedItem.objects.get_by_model(Widget, 'house thing') - [<Widget: pk=1>] - >>> TaggedItem.objects.get_by_model(Widget, ['house', 'thing']) - [<Widget: pk=1>] - -Restricting objects returned -~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Pass in a ``QuerySet`` to restrict the objects returned:: - - # Retrieve all Widgets which have a price less than 50, tagged with 'house' - TaggedItem.objects.get_by_model(Widget.objects.filter(price__lt=50), 'house') - - # Retrieve all Widgets which have a name starting with 'a', tagged with any - # of 'house', 'garden' or 'water'. - TaggedItem.objects.get_union_by_model(Widget.objects.filter(name__startswith='a'), - ['house', 'garden', 'water']) - - -Utilities -========= - -Tag-related utility functions are defined in the ``tagging.utils`` -module: - -``parse_tag_input(input)`` --------------------------- - -Parses tag input, with multiple word input being activated and -delineated by commas and double quotes. Quotes take precedence, so they -may contain commas. - -Returns a sorted list of unique tag names. - -See `tag input`_ for more details. - -``edit_string_for_tags(tags)`` ------------------------------- -Given list of ``Tag`` instances, creates a string representation of the -list suitable for editing by the user, such that submitting the given -string representation back without changing it will give the same list -of tags. - -Tag names which contain commas will be double quoted. - -If any tag name which isn't being quoted contains whitespace, the -resulting string of tag names will be comma-delimited, otherwise it will -be space-delimited. - -``get_tag_list(tags)`` ----------------------- - -Utility function for accepting tag input in a flexible manner. - -If a ``Tag`` object is given, it will be returned in a list as its -single occupant. - -If given, the tag names in the following will be used to create a -``Tag`` ``QuerySet``: - - * A string, which may contain multiple tag names. - * A list or tuple of strings corresponding to tag names. - * A list or tuple of integers corresponding to tag ids. - -If given, the following will be returned as-is: - - * A list or tuple of ``Tag`` objects. - * A ``Tag`` ``QuerySet``. - -``calculate_cloud(tags, steps=4, distribution=tagging.utils.LOGARITHMIC)`` --------------------------------------------------------------------------- - -Add a ``font_size`` attribute to each tag according to the frequency of -its use, as indicated by its ``count`` attribute. - -``steps`` defines the range of font sizes - ``font_size`` will be an -integer between 1 and ``steps`` (inclusive). - -``distribution`` defines the type of font size distribution algorithm -which will be used - logarithmic or linear. It must be one of -``tagging.utils.LOGARITHMIC`` or ``tagging.utils.LINEAR``. - - -Model Fields -============ - -The ``tagging.fields`` module contains fields which make it easy to -integrate tagging into your models and into the -``django.contrib.admin`` application. - -Field types ------------ - -``TagField`` -~~~~~~~~~~~~ - -A ``CharField`` that actually works as a relationship to tags "under -the hood". - -Using this example model:: - - class Link(models.Model): - ... - tags = TagField() - -Setting tags:: - - >>> l = Link.objects.get(...) - >>> l.tags = 'tag1 tag2 tag3' - -Getting tags for an instance:: - - >>> l.tags - 'tag1 tag2 tag3' - -Getting tags for a model - i.e. all tags used by all instances of the -model:: - - >>> Link.tags - 'tag1 tag2 tag3 tag4 tag5' - -This field will also validate that it has been given a valid list of -tag names, separated by a single comma, a single space or a comma -followed by a space, using the ``isTagList`` validator from -``tagging.validators``. - - -Form fields -=========== - -The ``tagging.forms`` module contains a ``Field`` for use with -Django's `newforms library`_ which takes care of validating tag name -input when used in your forms. - -.. _`newforms library`: http://www.djangoproject.com/documentation/newforms/ - -Field types ------------ - -``TagField`` -~~~~~~~~~~~~ - -A form ``Field`` which is displayed as a single-line text input, which -validates that the input it receives is a valid list of tag names. - -When you generate a form for one of your models automatically, using -the ``ModelForm`` class provided by newforms, any -``tagging.fields.TagField`` fields in your model will automatically be -represented by a ``tagging.forms.TagField`` in the generated form. - - -Generic views -============= - -The ``tagging.views`` module contains views to handle simple cases of -common display logic related to tagging. - -``tagging.views.tagged_object_list`` ------------------------------------- - -**Description:** - -A view that displays a list of objects for a given model which have a -given tag. This is a thin wrapper around the -``django.views.generic.list_detail.object_list`` view, which takes a -model and a tag as its arguments (in addition to the other optional -arguments supported by ``object_list``), building the appropriate -``QuerySet`` for you instead of expecting one to be passed in. - -**Required arguments:** - - * ``queryset_or_model``: A ``QuerySet`` or Django model class for the - object which will be listed. - - * ``tag``: The tag which objects of the given model must have in - order to be listed. - -**Optional arguments:** - -Please refer to the `object_list documentation`_ for additional optional -arguments which may be given. - - * ``related_tags``: If ``True``, a ``related_tags`` context variable - will also contain tags related to the given tag for the given - model. - - * ``related_tag_counts``: If ``True`` and ``related_tags`` is - ``True``, each related tag will have a ``count`` attribute - indicating the number of items which have it in addition to the - given tag. - -**Template context:** - -Please refer to the `object_list documentation`_ for additional -template context variables which may be provided. - - * ``tag``: The ``Tag`` instance for the given tag. - -.. _`object_list documentation`: http://www.djangoproject.com/documentation/generic_views/#django-views-generic-list-detail-object-list - -Example usage -~~~~~~~~~~~~~ - -The following sample URLconf demonstrates using this generic view to -list items of a particular model class which have a given tag:: - - from django.conf.urls.defaults import * - - from tagging.views import tagged_object_list - - from shop.apps.products.models import Widget - - urlpatterns = patterns('', - url(r'^widgets/tag/(?P<tag>[^/]+)/$', - tagged_object_list, - dict(model=Widget, paginate_by=10, allow_empty=True, - template_object_name='widget'), - name='widget_tag_detail'), - ) - -The following sample view demonstrates wrapping this generic view to -perform filtering of the objects which are listed:: - - from myapp.models import People - - from tagging.views import tagged_object_list - - def tagged_people(request, country_code, tag): - queryset = People.objects.filter(country__code=country_code) - return tagged_object_list(request, queryset, tag, paginate_by=25, - allow_empty=True, template_object_name='people') - - -Template tags -============= - -The ``tagging.templatetags.tagging_tags`` module defines a number of -template tags which may be used to work with tags. - -Tag reference -------------- - -tags_for_model -~~~~~~~~~~~~~~ - -Retrieves a list of ``Tag`` objects associated with a given model and -stores them in a context variable. - -Usage:: - - {% tags_for_model [model] as [varname] %} - -The model is specified in ``[appname].[modelname]`` format. - -Extended usage:: - - {% tags_for_model [model] as [varname] with counts %} - -If specified - by providing extra ``with counts`` arguments - adds a -``count`` attribute to each tag containing the number of instances of -the given model which have been tagged with it. - -Examples:: - - {% tags_for_model products.Widget as widget_tags %} - {% tags_for_model products.Widget as widget_tags with counts %} - -tag_cloud_for_model -~~~~~~~~~~~~~~~~~~~ - -Retrieves a list of ``Tag`` objects for a given model, with tag cloud -attributes set, and stores them in a context variable. - -Usage:: - - {% tag_cloud_for_model [model] as [varname] %} - -The model is specified in ``[appname].[modelname]`` format. - -Extended usage:: - - {% tag_cloud_for_model [model] as [varname] with [options] %} - -Extra options can be provided after an optional ``with`` argument, with -each option being specified in ``[name]=[value]`` format. Valid extra -options are: - - ``steps`` - Integer. Defines the range of font sizes. - - ``min_count`` - Integer. Defines the minimum number of times a tag must have - been used to appear in the cloud. - - ``distribution`` - One of ``linear`` or ``log``. Defines the font-size - distribution algorithm to use when generating the tag cloud. - -Examples:: - - {% tag_cloud_for_model products.Widget as widget_tags %} - {% tag_cloud_for_model products.Widget as widget_tags with steps=9 min_count=3 distribution=log %} - -tags_for_object -~~~~~~~~~~~~~~~ - -Retrieves a list of ``Tag`` objects associated with an object and stores -them in a context variable. - -Usage:: - - {% tags_for_object [object] as [varname] %} - -Example:: - - {% tags_for_object foo_object as tag_list %} - -tagged_objects -~~~~~~~~~~~~~~ - -Retrieves a list of instances of a given model which are tagged with a -given ``Tag`` and stores them in a context variable. - -Usage:: - - {% tagged_objects [tag] in [model] as [varname] %} - -The model is specified in ``[appname].[modelname]`` format. - -The tag must be an instance of a ``Tag``, not the name of a tag. - -Example:: - - {% tagged_objects comedy_tag in tv.Show as comedies %} diff --git a/docs/overview.txt b/docs/overview.txt index 9641f03..8b65075 100644 --- a/docs/overview.txt +++ b/docs/overview.txt @@ -76,7 +76,7 @@ the command ``svn update`` from within the ``tagging-trunk`` directory. copy of the source code. .. _`Subversion`: http://subversion.tigris.org -.. _`PYTHONPATH`: http://docs.python.org/tut/node8.html#SECTION008110000000000000000 +.. _`PYTHONPATH`: http://www.python.org/doc/2.5.2/tut/node8.html#SECTION008120000000000000000 .. _`junction`: http://www.microsoft.com/technet/sysinternals/FileAndDisk/Junction.mspx .. _`CHANGELOG`: http://django-tagging.googlecode.com/svn/trunk/CHANGELOG.txt .. _`backwards-incompatible changes wiki page`: http://code.google.com/p/django-tagging/wiki/BackwardsIncompatibleChanges @@ -119,8 +119,7 @@ Default: ``50`` An integer which specifies the maximum length which any tag is allowed to have. This is used for validation in the ``django.contrib.admin`` -application and in any ``newforms`` forms automatically generated using -``ModelForm``. +application and in any forms automatically generated using ``ModelForm``. Registering your models @@ -402,7 +401,7 @@ function:: [<Tag: house>, <Tag: thing>] Tags are created, associated and unassociated accordingly when you use -``update_tags`` and ``add_tags``:: +``update_tags`` and ``add_tag``:: >>> Tag.objects.update_tags(widget, 'house monkey') >>> Tag.objects.get_for_object(widget) @@ -453,7 +452,7 @@ greater than 99:: >>> Tag.objects.usage_for_model(Widget, filters=dict(size__gt=99, user__username='Alan')) -.. _`field lookups`: http://www.djangoproject.com/documentation/db-api/#field-lookups +.. _`field lookups`: http://docs.djangoproject.com/en/dev/topics/db/queries/#field-lookups **New in development version** @@ -699,18 +698,17 @@ model:: This field will also validate that it has been given a valid list of tag names, separated by a single comma, a single space or a comma -followed by a space, using the ``isTagList`` validator from -``tagging.validators``. +followed by a space. Form fields =========== The ``tagging.forms`` module contains a ``Field`` for use with -Django's `newforms library`_ which takes care of validating tag name +Django's `forms library`_ which takes care of validating tag name input when used in your forms. -.. _`newforms library`: http://www.djangoproject.com/documentation/newforms/ +.. _`forms library`: http://docs.djangoproject.com/en/dev/topics/forms/ Field types ----------- @@ -722,9 +720,9 @@ A form ``Field`` which is displayed as a single-line text input, which validates that the input it receives is a valid list of tag names. When you generate a form for one of your models automatically, using -the ``ModelForm`` class provided by newforms, any -``tagging.fields.TagField`` fields in your model will automatically be -represented by a ``tagging.forms.TagField`` in the generated form. +the ``ModelForm`` class, any ``tagging.fields.TagField`` fields in your +model will automatically be represented by a ``tagging.forms.TagField`` +in the generated form. Generic views @@ -774,7 +772,7 @@ template context variables which may be provided. * ``tag``: The ``Tag`` instance for the given tag. -.. _`object_list documentation`: http://www.djangoproject.com/documentation/generic_views/#django-views-generic-list-detail-object-list +.. _`object_list documentation`: http://docs.djangoproject.com/en/dev/ref/generic-views/#django-views-generic-list-detail-object-list Example usage ~~~~~~~~~~~~~ @@ -791,7 +789,7 @@ list items of a particular model class which have a given tag:: urlpatterns = patterns('', url(r'^widgets/tag/(?P<tag>[^/]+)/$', tagged_object_list, - dict(model=Widget, paginate_by=10, allow_empty=True, + dict(queryset_or_model=Widget, paginate_by=10, allow_empty=True, template_object_name='widget'), name='widget_tag_detail'), ) |