Django中的动态长度表单处理和数据采集

Question

我有一种形式，其中输入字段的数量不断变化，并取决于我传递的参数。这意味着我不能进入forms.py并创建一个Form类，因为这要求我事先定义输入参数。

这是我如何定义形式的方法。

<!-- Table to Display the original sentence and take the input of the translation -->
    <table class="table">
        <thead class="thead-dark">
          <tr>
            <th scope="col">#</th>
            <th scope="col">Original Sentence</th>
            <th scope="col">Translation</th>
          </tr>
        </thead>
        <form name="translated-text-form" class="form-control" action="" method="post">
            {% csrf_token %}
            <tbody>

                {% for sentence in sentences %}
                <tr>
                    <th scope="row">{{ forloop.counter }}</th>
                    <td>{{ sentence.original_sentence }}</td>
                    <td><input type="text" name="translated-{{sentence.id}}" value="{{ sentence.translated_sentence }}" /></td>
                </tr>
                {% endfor %}

                <tr>
                    <td colspan="2">
                        <br>
                        <p style="text-align: center;">
                            <input class="btn btn-secondary" type="submit" value="Save Translations"/>
                        </p>
                    </td>
                </tr>
            </tbody>
        </form>
      </table>

这是表单输出

​

用户将在最右边的列中添加一些文本，我希望在我的Sentence模型中使用特定的sentence.id保存该文本。这就是我的模型

class Sentence(models.Model): 
    """ Model which holds the details of a sentence. A sentence is a part of a Wikipedia article which is tokenized.

    Fields:
        project_id: The ID of the project to which the sentence belongs 
        original_sentence: The original sentence tokenized from from the Wikipedia article.
        translated_sentence: The translated sentence in the target language.
    """

    # Define the sentence model fields 
    project_id = models.ForeignKey(Project, on_delete=models.CASCADE)
    original_sentence = models.CharField(max_length=5000)
    translated_sentence = models.CharField(max_length=5000, default="No Translation Found")

我知道我会怎么处理这个问题。在我的views.py中，我希望运行一个for-循环，并从命名为translated-{{sentence.id}}的表单中收集数据。但是，我无法使POST请求处理程序能够直接从表单中收集数据并根据句子的Sentence模型将其保存在id模型中。我需要帮助，在我的意见书面请求处理程序。

Answer 1

我找到了一个完全不使用forms.py的修复程序。这就是post请求处理程序的样子。

    # Handle the post request
    if request.method == 'POST':

        # Get the project details from the database
        all_sentence_data = Sentence.objects.filter(project_id=pk)
        sentence_ids = [sentence.id for sentence in all_sentence_data]

        # Iterate through all the input fields in the form 
        for i in range(len(sentence_ids)): 
            
            # Get the translated text from the form
            try: 
                translated_text = request.POST[f"translated-{str(sentence_ids[i])}"]

                if translated_text: 
                    
                    # Update the Sentence object with the translated text
                    Sentence.objects.filter(id=sentence_ids[i]).update(translated_sentence=translated_text)
            
            except: 
                continue

        messages.success(request, "Your translations have been saved successfully!")
        return redirect('/translation/' + str(pk)+'/')
    
    else: 
        return redirect('/translation/' + str(pk)+'/')