Job Search Engine


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2.17 列表视图提升 (1) 下载

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列表视图提升 (1) 下载

添加下载模板代码,这儿使用post方法处理

  <div class="pull-right"> 
    <form id="export" method="POST" action="" style="float: left;padding-right: 10px;">{% csrf_token %} 
      <a class="fa fa-download fa-1x" href="javascript:;" onclick="document.getElementById('export').submit();"> {% trans "download" %}</a> 
    </form>
    {% if request.user.is_staff %}
      <a href=''><i class="fa fa-plus-square-o" aria-hidden="true"> {% trans "Create" %}</i></a> 
    {% endif %}
  </div>

给创建留了接口,暂时未实现,如果需要创建CreateView,可以用它提供快捷入口

添加font awesome支持图表

  <link rel="stylesheet" type="text/css" href="[https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css](https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css)">

后台处理

class JobEntryListView(PageMixin, ListView):
    def post(self, *args, **kwargs):
        qs = self.get_queryset()
        qs = self.filter_class(self.request.GET, queryset=qs).qs
        qs = self.further_filter(qs)
        fields_display = []
        fields_fk = [ ]
        fields_datetime = ["created","updated", ]
        from django.db import models
        excludes = [field.name for field in self.model._meta.get_fields() if isinstance(field, models.ManyToOneRel)]
        excludes.append('trigger_scrap_records')
        fields_multiple = ["",]
        from plugin.utils import gen_csv
        return gen_csv(self.model, qs, "job_entry.csv", fields_display, fields_fk, fields_datetime, excludes, fields_multiple)

插件代码

from django.http import HttpResponse, HttpResponseRedirect
import csv
import codecs
from django.utils.encoding import force_str, force_text
from django.db import models

def gen_csv(model, qs, filename, fields_display, fields_fk, fields_datetime, excludes, fields_multiple=None, fields_property=None):
        response = HttpResponse(content_type='text/csv')        
        response['Content-Disposition'] = 'attachment; filename={0}'.format(filename)
        response.write(codecs.BOM_UTF8) # add bom header
        writer = csv.writer(response)
        row = []
        for field in model._meta.get_fields():
            if field.name in excludes:
                continue
            row.append(field.verbose_name)
        if fields_property:
            for field in fields_property:
                row.append(_(field[1]))            
        writer.writerow(row)
        for obj in qs:
            row = []
            for field in model._meta.get_fields():
                if field.name in excludes:
                    continue                    
                #row.append(field.value_to_string(obj).encode('utf8'))
                value = getattr(obj, field.name) 
                if value:
                    if field.name in fields_datetime:
                        if isinstance(field, models.DateTimeField):
                            value = value.strftime('%Y-%m-%d %H:%M:%S')
                        else:
                            value = value.strftime('%Y-%m-%d')                        
                    elif field.name in fields_display:
                        value = obj._get_FIELD_display(field)
                    elif field.name in fields_fk:
                        value = force_text(value, strings_only=True)
                    elif fields_multiple and field.name in fields_multiple:
                        str = "{0}{1}()".format("obj.get_",field.name)
                        value = eval(str)
                    value = "%s" %  (value)
                    if fields_multiple and field.name in fields_multiple:
                        row.append(value)
                    else:
                        row.append(value.encode('utf8'))
                else:
                    row.append("")
            if fields_property:
                for field in fields_property:
                    value = getattr(obj, field[0]) 
                    row.append(value)                    
            writer.writerow(row)    
        return response