两个wtforms在同一页上提交。 validate_on_submit只与最后一个工作

Question

我有两个不同的wtforms与“提交”按钮在一个页面上。 点击其中任何一个都会激活最后一个，所以validate_on_submit函数对于第二个按钮总是返回True。

forms.py

class SearchByAuthorForm(Form): 
    author_name = TextField('author_name', validators = [Length(max=25)]) 
    author_surname = TextField('author_surname',validators = [Length(max=25)]) 
    submit = SubmitField("Search") 


class SearchByBookForm(Form): 
    title = TextField('title', validators = [Length(max=50)]) 
    submit = SubmitField("Search") 

views.py

@app.route('/', methods = ['GET','POST']) 
@app.route('/index', methods = ['GET','POST']) 
@login_required 
def index(): 
    user = g.user 
    aform = SearchByAuthorForm(request.form) 
    bform = SearchByBookForm(request.form) 
    search_result = [] 
    search_type = "" 
    print aform.errors 
    print bform.errors 
    if aform.validate_on_submit(): 
     author_name = aform.author_name.data.lower() 
     author_surname = aform.author_surname.data.lower() 
     search_type = "author" 
     if author_name != "" and author_surname == "": 
      search_result = Author.query.filter_by(author_name = author_name).all() 
     if author_name == "" and author_surname != "": 
      search_result = Author.query.filter_by(author_surname = author_surname).all() 
     if author_name != "" and author_surname != "": 
      search_result = Author.query.filter_by(author_name = author_name, author_surname = author_surname).all() 
    if bform.validate_on_submit(): 
     title = bform.title.data.lower() 
     search_result = Book.query.filter_by(title = title).all() 
     search_type = "book" 
    print aform.errors 
    print bform.errors 
    return render_template('index.html', user = user, a_form = aform, b_form = bform, search_result = search_result, search_type = search_type) 

模板：

<div style="width:100%"> 
<div style="width:50%;float:left;"> 
<form action="" method="post" name="author_search"> 
    {{ a_form.hidden_tag() }} 
     <h2>Search by author</h2><br> 
     <table> 
     <tr> 
     <td>Author's Name:</td><td>{{ a_form.author_name(size=25) }}</td> 
     </tr> 
     <tr> 
     <td>Author's Surname:</td><td>{{ a_form.author_surname(size=25) }}<td> 
     </tr> 
     </table> 
     <p>{{ a_form.submit }}</p> 
</form> 
</div> 
<div style="width:50%;float:left;"> 
<form action="" method="post" name="book_search"> 
    {{ b_form.hidden_tag() }} 
     <h2>Search by book</h2><br> 
     <table> 
     <tr> 
     <td>Title:</td><td>{{ b_form.title(size=25) }}</td> 
     </tr> 
     </table> 
    <p><input type="submit" value="Search" name="book"></p> 
</form> 
</div> 
</div> 

Answer 1

这个问题很难回答，因为它缺乏上下文。你究竟想要做什么？看起来你正在试图做的是子类化一个表单。在这种情况下，这是一个example。

class ProfileForm(Form): 
    birthday = DateTimeField('Your Birthday', format='%m/%d/%y') 
    signature = TextAreaField('Forum Signature') 

class AdminProfileForm(ProfileForm): 
    username = StringField('Username', [validators.Length(max=40)]) 
    level = IntegerField('User Level', [validators.NumberRange(min=0, max=10)]) 

这里发生的是AdminProfileForm是假设ProfileForm的值。调用一个AdminProfileForm然后为两者生成所有字段。