效果圖：

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在列表視圖函數增加搜索功能、

新增函數

def get_search_list(self) 鉤子方法，獲取搜索條件

一、strak組件

strak/service/core_func.py

import functools from types import FunctionTypefrom django import forms from django.db.models import Q from django.http import QueryDict from django.urls import re_path from django.utils.safestring import mark_safe from django.shortcuts import HttpResponse, render, reverse, redirectfrom stark.utils.pagination import Paginationclass StarkModelForm(forms.ModelForm):def __init__(self, *args, **kwargs):super(StarkModelForm, self).__init__(*args, **kwargs)# 統一給ModelForm生成字段添加樣式for name, field in self.fields.items():field.widget.attrs['class'] = 'form-control'def get_choice_text(title, field):"""對于Stark組件中定義列時，choice如果想要顯示中文信息，調用此方法即可。:param title: 希望頁面顯示的表頭:param field: 字段名稱:return:"""def inner(self, obj=None, is_header=None):if is_header:return titlemethod = "get_%s_display" % fieldreturn getattr(obj, method)()# GENDER_CHOICES = ((MALE, '男'),(FEMALE, '女'),)# 對于choice字段，如果想獲取獲取第二個值，可以通過：對象.get_字段名_display()return innerclass StarkHandler(object):list_display = []order_list = []search_list = []per_page_data = 10has_add_btn = Truemodel_form_class = Nonelist_template = Noneadd_template = Noneedit_template = Nonedelete_template = Nonedef __init__(self, site, model_class, prev):self.site = siteself.model_class = model_classself.prev = prevself.request = Nonedef display_edit(self, obj=None, is_header=None):"""自定義頁面顯示的列（表頭和內容）:param obj::param is_header::return:"""if is_header:return '編輯'name = '%s:%s' % (self.site.namespace, self.get_edit_url_name,)return mark_safe('<a href="%s">編輯</a>' % reverse(name, args=(obj.pk,)))def display_delete(self, obj=None, is_header=None):if is_header:return '刪除'name = '%s:%s' % (self.site.namespace, self.get_delete_url_name,)return mark_safe('<a href="%s">刪除</a>' % reverse(name, args=(obj.pk,)))def get_list_display(self):"""獲取頁面上應該顯示的列，預留的自定義擴展，例如：以后根據用戶的不同顯示不同的列:return:"""value = []value.extend(self.list_display)return valuedef get_search_list(self):return self.search_listdef get_add_btn(self, *args, **kwargs):if self.has_add_btn:return '<a class="btn btn-primary" href="%s">添加</a>' % self.reverse_add_url(*args, **kwargs)def get_model_form_class(self, request, *args, **kwargs):if self.model_form_class:return self.model_form_classclass DynamicModelForm(StarkModelForm):class Meta:model = self.model_classfields = '__all__'return DynamicModelFormdef get_order_list(self):return self.order_list or ['-id', ]def list_view(self, request, *args, **kwargs):"""列表頁面:param request::return:"""# 搜索列表寫ORM語句，如：['name__contains','email__contains','id__gt','gender']search_list = self.get_search_list()search_value = request.GET.get('q', '')conn = Q()conn.connector = 'OR' # 通過or鏈接if search_value:for item in search_list:conn.children.append((item, search_value)) # conn.children.append('name__contains','張三')# 1.獲取排序order_list = self.get_order_list()queryset = self.model_class.objects.filter(conn).order_by(*order_list)# 2.分頁處理all_count = queryset.count()query_params = request.GET.copy() # 深copyquery_params._mutable = True # query_params默認不可修改 pager = Pagination(current_page=request.GET.get('page'),all_count=all_count,base_url=request.path_info,query_params=query_params,per_page_data=self.per_page_data,)data_list = queryset[pager.start:pager.end]# 3 處理表格list_display = self.get_list_display() # 會優先調用UserInfoHandler里的get_list_display()方法。# 3.1 處理表格的表頭header_list = []if list_display:for field_or_func in list_display:if isinstance(field_or_func, FunctionType):verbose_name = field_or_func(self, obj=None, is_header=True)else:verbose_name = self.model_class._meta.get_field(field_or_func).verbose_nameheader_list.append(verbose_name)else:header_list.append(self.model_class._meta.model_name) # 如果用戶沒有填寫list_display，就顯示表名# 3.2 處理表的內容body_list = []for obj in data_list:tr_list = []if list_display:for field_or_func in list_display:if isinstance(field_or_func, FunctionType):tr_list.append(field_or_func(self, obj, is_header=False, *args, **kwargs))else:tr_list.append(getattr(obj, field_or_func))else:tr_list.append(obj) # 如果用戶沒有填寫list_display，就顯示表對象，所以表類要定義__str__方法 body_list.append(tr_list)# 4 添加按鈕add_btn = self.get_add_btn(*args, **kwargs)context = {'data_list': data_list,'header_list': header_list,'body_list': body_list,'pager': pager,'add_btn': add_btn,'search_list': search_list,'search_value': search_value,}return render(request, self.list_template or 'stark/data_list.html', context)def save(self, form, is_update=False, *args, **kwargs):"""在使用ModelForm保存數據之前預留的鉤子方法:param form::param is_update::return:"""form.save()def add_view(self, request, *args, **kwargs):"""添加頁面:param request::return:"""model_form_class = self.get_model_form_class(request, *args, **kwargs)if request.method == 'GET':form = model_form_class()return render(request, 'stark/change.html', {'form': form})form = model_form_class(data=request.POST)if form.is_valid():self.save(form, False, *args, **kwargs)# 在數據庫保存成功后，跳轉回列表頁面(攜帶原來的參數)。return redirect(self.reverse_list_url(*args, **kwargs))return render(request, self.add_template or 'stark/change.html', {'form': form})def edit_view(self, request, pk, *args, **kwargs):"""編輯頁面:param request::return:"""current_edit_object = self.model_class.objects.filter(pk=pk).first()if not current_edit_object:return HttpResponse('要修改的數據不存在，請重新選擇')model_form_class = self.get_model_form_class(request, *args, **kwargs)if request.method == 'GET':form = model_form_class(instance=current_edit_object)return render(request, 'stark/change.html', {'form': form})form = self.model_form_class(data=request.POST, instance=current_edit_object)if form.is_valid:self.save(form, True, *args, **kwargs)# 在數據庫保存成功后，跳轉回列表頁面（攜帶原來的參數）return redirect(self.reverse_list_url(*args, **kwargs))return render(request, 'stark/change.html', {'form': form})def delete_view(self, request, pk, *args, **kwargs):"""刪除頁面:param request::param pk::return:"""original_list_url = self.reverse_list_url(*args, **kwargs)if request.method == 'GET':return render(request, 'stark/delete.html', {'cancel': original_list_url})self.model_class.objects.filter(pk=pk).delete()return redirect(original_list_url)def get_url_name(self, params):app_label, model_name = self.model_class._meta.app_label, self.model_class._meta.model_nameif self.prev:return '%s_%s_%s_%s' % (app_label, model_name, self.prev, params)return '%s_%s_%s' % (app_label, model_name, params)@propertydef get_list_url_name(self):"""獲取列表頁面URL的name:return:"""return self.get_url_name('list')@propertydef get_add_url_name(self):"""獲取添加頁面URL的name:return:"""return self.get_url_name('add')@propertydef get_edit_url_name(self):"""獲取編輯頁面URL的name:return:"""return self.get_url_name('edit')@propertydef get_delete_url_name(self):"""獲取刪除頁面URL的name:return:"""return self.get_url_name('delete')def reverse_common_url(self, name, *args, **kwargs):"""生成帶有原搜索條件的URL:param name: url:param args::param kwargs::return:"""name = '%s:%s' % (self.site.namespace, name)base_url = reverse(name, args=args, kwargs=kwargs)if not self.request.GET:reverse_url = base_urlelse:params = self.request.GET.urlencode()new_query_dict = QueryDict(mutable=True)new_query_dict['_filter'] = paramsreverse_url = '%s?%s' % (base_url, new_query_dict.urlencode())return reverse_urldef reverse_add_url(self, *args, **kwargs):"""帶有原搜索條件的增加URL:param args::param kwargs::return:"""return self.reverse_common_url(self.get_add_url_name, *args, **kwargs)def reverse_edit_url(self, *args, **kwargs):"""帶有原搜索條件的編輯URL:param args::param kwargs::return:"""return self.reverse_common_url(self.get_edit_url_name, *args, **kwargs)def reverse_delete_url(self, *args, **kwargs):"""帶有原搜索條件的刪除URL:param args::param kwargs::return:"""return self.reverse_common_url(self.get_delete_url_name, *args, **kwargs)def reverse_list_url(self, *args, **kwargs):name = '%s:%s' % (self.site.namespace, self.get_list_url_name,)base_url = reverse(name, args=args, kwargs=kwargs)params = self.request.GET.get('_filter')if not params:return base_urlreturn '%s?%s' % (base_url, params)def wrapper(self, func):"""當每一個request請求進來的時候，把request賦值給類的數據屬性self.request:param func: request請求對應的視圖函數:return:"""@functools.wraps(func) # 保留原函數的原信息，寫裝飾器建議寫上這個。def inner(request, *args, **kwargs):self.request = requestreturn func(request, *args, **kwargs)return innerdef get_urls(self):patterns = [re_path(r'^list/$', self.wrapper(self.list_view), name=self.get_list_url_name),re_path(r'^add/$', self.wrapper(self.add_view), name=self.get_add_url_name),re_path(r'^edit/(\d+)/$', self.wrapper(self.edit_view), name=self.get_edit_url_name),re_path(r'^delete/(\d+)/$', self.wrapper(self.delete_view), name=self.get_delete_url_name),]patterns.extend(self.extra_urls())return patternsdef extra_urls(self):return []class StarkSite(object):def __init__(self):self._registry = []self.app_name = 'stark'self.namespace = 'stark'def register(self, model_class, handler_class=None, prev=None):""":param model_class: 是models中的數據庫表對應的類。:param handler_class: 處理請求的視圖函數所在的類:param prev: 生成URL的前綴:return:"""if not handler_class:handler_class = StarkHandlerself._registry.append({'model_class': model_class, 'handler': handler_class(self, model_class, prev), 'prev': prev})def get_urls(self):patterns = []for item in self._registry:model_class = item['model_class']handler = item['handler']prev = item['prev']app_name, model_name = model_class._meta.app_label, model_class._meta.model_nameif prev:patterns.append(re_path(r'^%s/%s/%s/' % (app_name, model_name, prev,), (handler.get_urls(), None, None)))else:patterns.append(re_path(r'^%s/%s/' % (app_name, model_name,), (handler.get_urls(), None, None)))return patterns@propertydef urls(self):return self.get_urls(), self.app_name, self.namespacesite = StarkSite()

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二、業務代碼

from stark.service.core_func import site, StarkHandler, StarkModelForm, get_choice_textfrom web import modelsclass UserInfoModelForm(StarkModelForm):class Meta:model = models.UserInfofields = ['name', 'gender', 'classes', 'age', 'email']class DepartmentHandler(StarkHandler):list_display = ['title']class UserInfoHandler(StarkHandler):per_page_data = 5order_list = ['gender']model_form_class = UserInfoModelFormsearch_list = ['name__contains', 'email__contains', ]list_display = ['name',get_choice_text('性別', 'gender'),get_choice_text('班級', 'classes'),'age', 'email', 'department',StarkHandler.display_edit,StarkHandler.display_delete,]def save(self, form, is_update=False, *args, **kwargs):form.instance.department_id = 1form.save()site.register(models.Department, DepartmentHandler) # 給部門的url增加了前綴：/stark/web/department/private/ site.register(models.UserInfo, UserInfoHandler)

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三、模板渲染

{% extends 'layout.html' %}{% block css %}<link rel="stylesheet" href=""> {% endblock css %}{% block content %}<div class="custom-container">{% if add_btn %}<div class="up-down-space left">{{ add_btn|safe }}</div>{% endif %}<!-- 搜索 -->{% if search_list %}<div class="up-down-space right"><form method="get" class="form-inline"><div class="form-group"><input class="form-control" type="text" name="q" value="{{ search_value }}"placeholder="關鍵字搜搜"><button class="btn btn-primary" type="submit"><i class="fa fa-search" aria-hidden="true"></i></button></div></form></div>{% endif %}<!-- 搜索結束 --><table class="table table-bordered"><thead><tr>{% for item in header_list %}<th>{{ item }}</th>{% endfor %}</tr></thead><tbody>{% for row in body_list %}<tr>{% for ele in row %}<td>{{ ele }}</td>{% endfor %}</tr>{% endfor %}</tbody></table><nav><ul class="pagination">{{ pager.page_html|safe }}</ul></nav></div> {% endblock content %}

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轉載于:https://www.cnblogs.com/lshedward/p/10589527.html

總結

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