创建Django项目（七）——表单

2013-08-15 19:43:01|

 

      1.URL配置和视图

"blog\urls.py"文件中：添加url(r'write_article/$', 'write_article'), 

“blog\views.py”文件中：

def write_article(request, article_id=0):

    """写日志"""

    c = {}

    try:

        article = Article.objects.get(id=article_id)

    except Article.DoesNotExist:

        article = Article()

    if request.method == 'POST': # 如果form被提交

        form = ArticleForm(request.POST) # A form bound to the POST data

        # form.populate()

        if form.is_valid():  # All validation rules pass

            article.title = form.cleaned_data['title']

            article.body = form.cleaned_data['body']

            article.group = form.cleaned_data['group']

            article.save()

            return render_to_response('blogs_display.html',)  # Redirect after POST

        else:

            c['form'] = form

            return render_to_response("write_article.html", c, context_instance=RequestContext(request))

    else:

        if article.id:

            data = {}

            data['title'] = article.title

            data['body'] = article.body

            data['group'] = article.group

            form = ArticleForm(data)

        else:

            form = ArticleForm() # An unbound form

    c['form'] = form

    return render_to_response('write_article.html', c, context_instance=RequestContext(request))

 

        2.建立表单

      新建文件"blog\forms.py"，用于存放与blog相关的表单。

# -*- coding:utf-8 -*-

from django import forms

from models import Article, Group

class ArticleForm(forms.Form):

    """日志表单"""

    title = forms.CharField(max_length=30, required=True, label=u'标题',

        error_messages={'max_length':'标题太长了，不如放在内容里面吧', 'required':'忘记写标题了'})

    body = forms.CharField(max_length=1000, required=True, label=u'内容',

        error_messages={'max_length':'内容太长了', 'required':'忘记写内容了'})

    group_list = forms.ModelChoiceField(widget=forms.Select(), queryset=None, 

        empty_label=None, required=False, label=u'分类', 

        error_messages={'required':'文章没有分类'})

    class  Meta:

        model = Article            

    def __init__(self, *args, **kwargs):

        super(ArticleForm, self).__init__(*args, **kwargs)

        self.fields['group_list'].queryset = Group.objects.all()

 

3.模板

"blog\templates\write_article.html"文件中：

{% extends "base.html" %}

{% block title %}write_article{% endblock %}

{% block content %}  

    <form action='' method='post'><table>

        {% csrf_token %}

        {{ form.as_table }}

        <tr>

            <td><input type="submit" value="创建用户" />

            <input type="hidden" name="next" value="{{ next|escape }}" /></td>

        </tr>

    </table></form>

{% endblock %}

 

 

4.页面显示

http://localhost:8000/blog/write_article