flaskform传递变量(WTForms) [英] flaskform pass a variable (WTForms)

问题描述

我想传递一个str用作表单提示.我认为这很简单，但事实证明很难.

I want to pass a str to be used as the prompt for a form. I thought it would be simple but it is proving to be difficult.

这是我的代码:

class PostForm(FlaskForm):
    post = TextAreaField(Question, validators=[DataRequired()])
    submit = SubmitField('Submit')`

然后

form = PostForm('my question')

相应的html

{{ wtf.quick_form(form) }}

推荐答案

今天，我发现了一个与您类似的问题.我想将变量传递给 FlaskForm .对于一个小型的简历创建应用程序，我想给用户一个机会来创建多个他的工作经历条目，并且我想使用 FieldList 和 FormField 来实现.而且我需要以一种形式在一页上完成它.

Today I'm figured out about a similar problem as yours. I wanted to pass a variable to FlaskForm. For a small CV creation app, I want to give the user an opportunity to create more than 1 entry for his work experience and I wanted to do it with FieldList and FormField. And I needed to do it on one page so in one form.

我的解决方案是表单的工厂模式的非常简单的python实现:

My solution is pretty simple python implementation of factory pattern for forms:

class ConstructorForm(FlaskForm):
    ...
    work_experience_form = FieldList(FormField(WorkExperienceForm), min_entries=1, max_entries=1)
    skills_form = FieldList(FormField(SkillsForm), min_entries=1, max_entries=1)
    ...

这是我构建扩展表单的功能:

And here is my function for building extending forms:

def constructor_form(work_experience_forms=1, skills_forms=1):
    class _ConstructorForm(ConstructorForm):
        pass

    _ConstructorForm.work_experience_form = FieldList(
        FormField(WorkExperienceForm), min_entries=work_experience_forms, max_entries=work_experience_forms
    )
    _ConstructorForm.skills_form = FieldList(
        FormField(SkillsForm), min_entries=skills_forms, max_entries=skills_forms
    )

    return _ConstructorForm()

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