创新实训记录9--Django一个表单对应多个按钮解决方案/acm数据处理

Django一个表单对应多个按钮解决方案

需求：
在django中，有时候我们需要在一个表单中设置多个按钮实现不同的功能。

解决方法：
为不同按钮添加不同name属性，然后再后台判断name值。例如：

 <form class="form-horizontal" role="form"   method="POST" action="{% url 'choose_paper:setPaper' %}">
                                {% csrf_token %}
                                        <div class="form-group">
                                            <div class="col-sm-2 col-lg-offset-1">
                                                <p>年份</p>
                                                <input type="text" id="date" name="datetimepicker" value=" "
                                                    placeholder="选择年份" class="form-control">
                                            </div>
                                        
                                            <div class="col-sm-2 col-lg-offset-1">
                                                <p>会议</p>
                                                <div class="form-group">
                                                    <input type="text" name="venue" class="form-control">
                                                </div>
                                            </div>
                                        </div>
                                            <div class="col-sm-offset-2 col-sm-3">
                                                <button type="button submit" class="btn btn-info btn-lg btn-block" name="paper_set">
                                                    详情</button>
                                            </div>

然后通过不同的name实现不同功能

def function(request):  # 根据会议和年份筛选数据集合
    if request.POST:
        if  'paper_set' in request.POST:
            year = request.POST['datetimepicker']
            venue = request.POST['venue']
            context = {
                'year': year,
                'venue': venue
            }
        else:
            context={
                'year': "",
                'venue': ""
            }

    return render(request, 'choose_paper/setpaper.html', context)

参考：

数据处理（论文id/论文year/论文venue 形式）：

#用来生成id year venue 文件
with open('./articles.txt', 'r', encoding='utf-8') as f1:
        with open('./years.txt', 'r', encoding='utf-8') as f2:
            with open('./venues.txt', 'r', encoding="ISO-8859-1") as f3:
                ids=f1.readlines()
                years=f2.readlines()
                venues=f3.readlines()
                with open('./id_year_venue.txt', 'a', encoding='utf-8') as f4:
                    for i in range(len(ids)):
                        f4.write(ids[i])
                        f4.write(years[i])
                        f4.write(venues[i])
                        f4.write("\n")

获取满足条件的（年份&会议）的论文集合（id）：

 if  'paper_set' in request.POST:
            year = request.POST['datetimepicker']
            venue = request.POST['venue']
            articals=""
            with open("choose_paper/data/id_year_venue.txt",'r',encoding='utf-8') as f:
                lines=f.readlines()
                i=0
                while i< len(lines)-3:
                    a=lines[i].strip()
                    b=lines[i+1].strip()
                    c=lines[i+2].strip()
                    if(b==year and c==venue):
                        articals+=a
                        articals+=" "
                    i+=4
            context = {
                'articles':articals#获取满足年份，会议的论文id
            }