向W D仪表板添加按钮

Question

如图所示，是否可以在顶部面板上添加一个附加按钮（按钮）？

余did't发现在谷歌任何东西，在这里。

Answer 1

截图中不清楚您使用的是modeladmin还是snippet s将此模型公开给用户，但我会假设前者。

我不知道一个钩子，它允许你直接将按钮添加到标题，但是模板uses blocks应该允许我们覆盖这个部分。

我们可以利用模板的resolution order并创建/modeladmin/app-name/model-name/index.html，这将优先于/modeladmin/index.html。

{% extends "modeladmin/index.html %} 

{% block header_extra %} 
    <a href="#">My New Button</a> 
    {{ block.super }}{% comment %}Display the original buttons {% endcomment %} 
{% endblock %} 

现在您的按钮并没有做太多：所以您的应用程序称为feedler和一个叫Entry模型，创建/modeladmin/feedler/entry/index.html具有以下内容给出。要创建一个将与该模型管理员交互的动作，您需要创建一些按钮/网址/权限helpers和一个视图。

假设操作是将对象导出到CSV文件。振作起来，前面有相当多的代码。

在/feedler/admin.py，创建按钮/ URL /许可佣工和看法：

from django.contrib.auth.decorators import login_required 
from django.core.urlresolvers import reverse 
from django.utils.decorators import method_decorator 
from django.utils.functional import cached_property 
from django.utils.translation import ugettext as _ 
from wagtail.contrib.modeladmin.helpers import AdminURLHelper, ButtonHelper 
from wagtail.contrib.modeladmin.views import IndexView 


class ExportButtonHelper(ButtonHelper): 
    """ 
    This helper constructs all the necessary attributes to create a button. 

    There is a lot of boilerplate just for the classnames to be right :(
    """ 

    export_button_classnames = ['icon', 'icon-download'] 

    def export_button(self, classnames_add=None, classnames_exclude=None): 
     if classnames_add is None: 
      classnames_add = [] 
     if classnames_exclude is None: 
      classnames_exclude = [] 

     classnames = self.export_button_classnames + classnames_add 
     cn = self.finalise_classname(classnames, classnames_exclude) 
     text = _('Export {}'.format(self.verbose_name_plural.title())) 

     return { 
      'url': self.url_helper.get_action_url('export', query_params=self.request.GET), 
      'label': text, 
      'classname': cn, 
      'title': text, 
     } 


class ExportAdminURLHelper(FilterableAdminURLHelper): 
    """ 
    This helper constructs the different urls. 

    This is mostly just to overwrite the default behaviour 
    which consider any action other than 'create', 'choose_parent' and 'index' 
    as `object specific` and will try to add the object PK to the url 
    which is not what we want for the `export` option. 

    In addition, it appends the filters to the action. 
    """ 

    non_object_specific_actions = ('create', 'choose_parent', 'index', 'export') 

    def get_action_url(self, action, *args, **kwargs): 
     query_params = kwargs.pop('query_params', None) 

     url_name = self.get_action_url_name(action) 
     if action in self.non_object_specific_actions: 
      url = reverse(url_name) 
     else: 
      url = reverse(url_name, args=args, kwargs=kwargs) 

     if query_params: 
      url += '?{params}'.format(params=query_params.urlencode()) 

     return url 

    def get_action_url_pattern(self, action): 
     if action in self.non_object_specific_actions: 
      return self._get_action_url_pattern(action) 

     return self._get_object_specific_action_url_pattern(action) 


class ExportView(IndexView): 
    """ 
    A Class Based View which will generate 
    """ 

    def export_csv(self): 
     data = self.queryset.all() 
     response = ... 
     return response 


    @method_decorator(login_required) 
    def dispatch(self, request, *args, **kwargs): 
     super().dispatch(request, *args, **kwargs) 
     return self.export_csv() 


class ExportModelAdminMixin(object): 
    """ 
    A mixin to add to your model admin which hooks the different helpers, the view 
    and register the new urls. 
    """ 

    button_helper_class = ExportButtonHelper 
    url_helper_class = ExportAdminURLHelper 

    export_view_class = ExportView 

    def get_admin_urls_for_registration(self): 
     urls = super().get_admin_urls_for_registration() 
     urls += (
      url(
       self.url_helper.get_action_url_pattern('export'), 
       self.export_view, 
       name=self.url_helper.get_action_url_name('export') 
      ), 
     ) 

     return urls 

    def export_view(self, request): 
     kwargs = {'model_admin': self} 
     view_class = self.export_view_class 
     return view_class.as_view(**kwargs)(request) 

在/feedler/wagtail_hooks.py，创建和register的ModelAdmin：

from wagtail.contrib.modeladmin.options import ModelAdmin, modeladmin_register 

from .admin import ExportModelAdminMixin 
from .models import Entry 

class EntryModelAdmin(ExportModelAdminMixin, ModelAdmin): 
    model = Entry 
    # ... 

modeladmin_register(EntryModelAdmin) 

与所有的设置，你应该能够在上面创建的模板中使用{% include 'modeladmin/includes/button.html' with button=view.button_helper.export_button %}。