Python django.template.Engine() Examples

def test_block_override_in_extended_included_template(self):
        """
        ExtendsNode.find_template() initializes history with self.origin
        (#28071).
        """
        engine = Engine(
            loaders=[
                ['django.template.loaders.locmem.Loader', {
                    'base.html': "{% extends 'base.html' %}{% block base %}{{ block.super }}2{% endblock %}",
                    'included.html':
                        "{% extends 'included.html' %}{% block included %}{{ block.super }}B{% endblock %}",
                }],
                ['django.template.loaders.locmem.Loader', {
                    'base.html': "{% block base %}1{% endblock %}{% include 'included.html' %}",
                    'included.html': "{% block included %}A{% endblock %}",
                }],
            ],
        )
        template = engine.get_template('base.html')
        self.assertEqual(template.render(Context({})), '12AB') 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine(libraries={'i18n': 'django.templatetags.i18n'}).from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
        c = Context()
    else:
        c = {}
    files = []
    for f in os.listdir(fullpath):
        if not f.startswith('.'):
            if os.path.isdir(os.path.join(fullpath, f)):
                f += '/'
            files.append(f)
    c.update({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine().from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
    files = []
    for f in os.listdir(fullpath):
        if not f.startswith('.'):
            if os.path.isdir(os.path.join(fullpath, f)):
                f += '/'
            files.append(f)
    c = Context({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def handle(self, *args, **options):
        self.type = options['type']
        self.name = options['name']
        management.call_command('startapp', self.name)
        dir_name = ['management', Path('management/commands')]
        self.mk_dir(dir_name)

        if self.type == 'theme':
            dir_name = ['static', Path('static/' + self.name), 'templates', Path('templates/' + self.name)]
            self.mk_dir(dir_name)

        context = Context({
            'app_name': self.name,
            'app_camel_name': self.name[0].upper() + self.name[1:],
            'app_upper_name': self.name.upper(),
            'deeru_type': self.type
        }, autoescape=False)

        for template_name, new_file in self.get_app_templates():
            template = Engine().from_string(self.get_template_str(template_name))
            content = template.render(context)
            new_file.write_text(content) 

def setUpClass(cls):
        test_app_root = settings.TENANT_APPS_DIR
        settings.MULTITENANT_TEMPLATE_DIRS = [
            os.path.join(test_app_root, "tenants/%s/templates")
        ]

        cls.engine = Engine(
            loaders=[
                (
                    "django_tenants.template.loaders.cached.Loader",
                    ["django_tenants.template.loaders.filesystem.Loader"],
                )
            ]
        )

        super().setUpClass() 

def setUpClass(cls):
        test_app_root = settings.TENANT_APPS_DIR
        settings.MULTITENANT_TEMPLATE_DIRS = [
            os.path.join(test_app_root, "tenants/%s/templates")
        ]

        cls.engine = Engine(
            loaders=[
                (
                    "django_tenants.template.loaders.cached.Loader",
                    ["django_tenants.template.loaders.filesystem.Loader"],
                )
            ]
        )

        super().setUpClass() 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine(libraries={'i18n': 'django.templatetags.i18n'}).from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
        c = Context()
    else:
        c = {}
    files = []
    for f in fullpath.iterdir():
        if not f.name.startswith('.'):
            url = str(f.relative_to(fullpath))
            if f.is_dir():
                url += '/'
            files.append(url)
    c.update({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine().from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
    files = []
    for f in os.listdir(fullpath):
        if not f.startswith('.'):
            if os.path.isdir(os.path.join(fullpath, f)):
                f += '/'
            files.append(f)
    c = Context({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine(libraries={'i18n': 'django.templatetags.i18n'}).from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
        c = Context()
    else:
        c = {}
    files = []
    for f in os.listdir(fullpath):
        if not f.startswith('.'):
            if os.path.isdir(os.path.join(fullpath, f)):
                f += '/'
            files.append(f)
    c.update({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def test_url_reverse_view_name(self):
        """
        #19827 -- url tag should keep original strack trace when reraising
        exception.
        """
        t = Engine().from_string('{% url will_not_match %}')
        c = Context()
        try:
            t.render(c)
        except NoReverseMatch:
            tb = sys.exc_info()[2]
            depth = 0
            while tb.tb_next is not None:
                tb = tb.tb_next
                depth += 1
            self.assertGreater(depth, 5, "The traceback context was lost when reraising the traceback.") 

def directory_index(path, fullpath):
    try:
        t = loader.select_template([
            'static/directory_index.html',
            'static/directory_index',
        ])
    except TemplateDoesNotExist:
        t = Engine(libraries={'i18n': 'django.templatetags.i18n'}).from_string(DEFAULT_DIRECTORY_INDEX_TEMPLATE)
        c = Context()
    else:
        c = {}
    files = []
    for f in os.listdir(fullpath):
        if not f.startswith('.'):
            if os.path.isdir(os.path.join(fullpath, f)):
                f += '/'
            files.append(f)
    c.update({
        'directory': path + '/',
        'file_list': files,
    })
    return HttpResponse(t.render(c)) 

def test_recursive_multiple_loaders(self):
        engine = Engine(
            dirs=[os.path.join(RECURSIVE, 'fs')],
            loaders=[(
                'django.template.loaders.locmem.Loader', {
                    'one.html': (
                        '{% extends "one.html" %}{% block content %}{{ block.super }} locmem-one{% endblock %}'
                    ),
                    'two.html': (
                        '{% extends "two.html" %}{% block content %}{{ block.super }} locmem-two{% endblock %}'
                    ),
                    'three.html': (
                        '{% extends "three.html" %}{% block content %}{{ block.super }} locmem-three{% endblock %}'
                    ),
                }
            ), 'django.template.loaders.filesystem.Loader'],
        )
        template = engine.get_template('one.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three locmem-three two locmem-two one locmem-one') 

def test_unique_history_per_loader(self):
        """
        Extending should continue even if two loaders return the same
        name for a template.
        """
        engine = Engine(
            loaders=[
                ['django.template.loaders.locmem.Loader', {
                    'base.html': '{% extends "base.html" %}{% block content %}{{ block.super }} loader1{% endblock %}',
                }],
                ['django.template.loaders.locmem.Loader', {
                    'base.html': '{% block content %}loader2{% endblock %}',
                }],
            ]
        )
        template = engine.get_template('base.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'loader2 loader1') 

def page_not_found(request, template_name='404.html'):
    """
    Default 404 handler.

    Templates: :template:`404.html`
    Context:
        request_path
            The path of the requested URL (e.g., '/app/pages/bad_page/')
    """
    context = {'request_path': request.path}
    try:
        template = loader.get_template(template_name)
        body = template.render(context, request)
        content_type = None             # Django will use DEFAULT_CONTENT_TYPE
    except TemplateDoesNotExist:
        template = Engine().from_string(
            '<h1>Not Found</h1>'
            '<p>The requested URL {{ request_path }} was not found on this server.</p>')
        body = template.render(Context(context))
        content_type = 'text/html'
    return http.HttpResponseNotFound(body, content_type=content_type) 

def test_dir1_extend1(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/one1.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir1 one') 

def test_dir1_extend(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/one.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir1 one') 

def test_log_on_variable_does_not_exist_silent(self):
        class TestObject:
            class SilentDoesNotExist(Exception):
                silent_variable_failure = True

            @property
            def template_name(self):
                return "template_name"

            @property
            def template(self):
                return Engine().from_string('')

            @property
            def article(self):
                raise TestObject.SilentDoesNotExist("Attribute does not exist.")

            def __iter__(self):
                return iter(attr for attr in dir(TestObject) if attr[:2] != "__")

            def __getitem__(self, item):
                return self.__dict__[item]

        with self.assertLogs('django.template', self.loglevel) as cm:
            Variable('article').resolve(TestObject())

        self.assertEqual(len(cm.records), 1)
        log_record = cm.records[0]
        self.assertEqual(
            log_record.getMessage(),
            "Exception while resolving variable 'article' in template 'template_name'."
        )
        self.assertIsNotNone(log_record.exc_info)
        raised_exception = log_record.exc_info[1]
        self.assertEqual(str(raised_exception), 'Attribute does not exist.') 

def test_node_origin(self):
        """
        #25848 -- Set origin on Node so debugging tools can determine which
        template the node came from even if extending or including templates.
        """
        template = Engine().from_string('content')
        for node in template.nodelist:
            self.assertEqual(node.origin, template.origin) 

def test_extends_generic_template(self):
        """
        #24338 -- Allow extending django.template.backends.django.Template
        objects.
        """
        engine = Engine()
        parent = engine.from_string('{% block content %}parent{% endblock %}')
        child = engine.from_string(
            '{% extends parent %}{% block content %}child{% endblock %}')
        self.assertEqual(child.render(Context({'parent': parent})), 'child') 

def test_super_errors(self):
        """
        #18169 -- NoReverseMatch should not be silence in block.super.
        """
        engine = Engine(app_dirs=True)
        t = engine.get_template('included_content.html')
        with self.assertRaises(NoReverseMatch):
            t.render(Context()) 

def setUpClass(cls):
        cls.engine = Engine()
        super().setUpClass() 

def test_dir1_extend2(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/one2.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir1 one') 

def test_dir1_extend3(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/one3.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir1 one') 

def test_dir2_extend(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/dir2/one.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir2 one') 

def test_normal_include(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/dir2/inc2.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'dir2 include') 

def test_dir2_include(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/dir2/inc1.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three') 

def test_include_error(self):
        engine = Engine(dirs=[RELATIVE])
        msg = (
            "The relative path '\"./../three.html\"' points outside the file "
            "hierarchy that template 'error_include.html' is in."
        )
        with self.assertRaisesMessage(TemplateSyntaxError, msg):
            engine.render_to_string('error_include.html') 

def test_mixing1(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/two.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three two one dir2 one dir1 two') 

def test_decorated_filter(self):
        engine = Engine(libraries=LIBRARIES)
        t = engine.from_string('{% load custom %}{{ name|make_data_div }}')
        self.assertEqual(t.render(Context({'name': 'foo'})), '<div data-name="foo"></div>') 

def test_mixing2(self):
        engine = Engine(dirs=[RELATIVE])
        template = engine.get_template('dir1/three.html')
        output = template.render(Context({}))
        self.assertEqual(output.strip(), 'three dir1 three')