django modelform.is_valid（）没有结果，没有错误，没有

时间：2015-05-30 17:57:00

标签： python django forms

现在已经读了好几个小时了。仍然不知道这是如何工作的。 我试图在django中验证一个简单的用户配置文件表单，但该函数总是返回 - 嗯 - 没什么（？）...即使我尝试打印出form.is_valid（）也没有返回。

这里是代码，也许有人有任何想法：

FORMS.PY 

class UserForm(ModelForm):
class Meta:
    model = User
    fields = ['username', 'password', 'email', 'first_name', 'last_name']

def __init__(self, instance):
    super(UserForm, self).__init__()
    self.fields['username'].widget.attrs['readonly'] = True
    self.fields['password'].widget = forms.PasswordInput()
    for field in self.fields:
        self.fields[field].widget.attrs['class'] = 'form-control'
        self.fields[field].widget.attrs['value'] = getattr(instance, field)

class UserDataForm(ModelForm):
class Meta:
    model = UserProfile
    fields = ['picture', 'academicDiscipline', 'studentNumber', 'location']

def __init__(self, instance):
    super(UserDataForm, self).__init__()
    for field in self.fields:
        if field != 'picture':
            self.fields[field].widget.attrs['class'] = 'form-control'
            self.fields[field].widget.attrs['value'] = getattr(instance, field)

VIEWS.PY 

curUser = User.objects.get(pk = request.user.id)
curUserProfile = curUser.userprofile
success_msg, error_msg = None, None

if request.method == 'POST':
    user = User.objects.get( username__exact = request.POST['username'] )
    userProfile = None
    user.email = request.POST['email']
    user.first_name = request.POST['first_name']
    user.last_name = request.POST['last_name']
    userForm = UserForm(user)
    if userForm.is_valid():
        user = userForm.save()
        user.save()
        success_msg = 'Benutzerdaten wurden erfolgreich aktualisiert.'
        userProfile = user.userprofile
        userProfile.academicDiscipline = request.POST['academicDiscipline']
        userProfile.studentNumber = request.POST['studentNumber']
        userProfile.location = request.POST['location']
        userDataForm = UserDataForm(userProfile)
        if userDataForm.is_valid():
            userDataForm.save()
            userDataForm = userDataForm
            success_msg = 'Benutzerdaten wurden erfolgreich aktualisiert.'
        else:
            error_msg = "userProfileData failure"
    else:
        error_msg = 'userData failure'

    context = {
        'active_page' : 'settings',
        'nav': Nav.nav,
        'success_msg': success_msg,
        'error_msg': error_msg,
        'userForm': UserForm(curUser),
        'userDataForm': UserDataForm(curUserProfile)
    }
    return render(request, 'settings.html', context)
else:
    context = {
        'active_page' : 'settings',
        'nav': Nav.nav,
        'userForm': UserForm(curUser),
        'userDataForm': UserDataForm(curUserProfile)
    }
    return render(request, 'settings.html', context)

SETTINGS.HTML 

    <form action="{% url 'twittur:settings' %}" method="post">
{% csrf_token %}

    {{ userForm.non_field_errors }}
    {{ userDataForm.non_field_errors }}

    <div class="post" id="profilbild">

        <h4>Profilbild auswählen</h4>

        <div class="col-xs-12 form-group">
            <div class="col-xs-12 text-center" style="vertical-align: bottom !important;">
                <img src="/picture/{{ user.picture }}" class="img-thumbnail" style="width: 100px;">
                <img src="/picture/{{ user.picture }}" class="img-thumbnail" style="width: 75px; margin-top: 26px;">
                <img src="/picture/{{ user.picture }}" class="img-thumbnail" style="width: 50px; margin-top: 50px;">
                <p class="help-block">Aktuelles Profilbild (100px, 75px, 50px). {{ user.picture }}</p>
            </div>
            <label class="form-label" for="avatarInput">Profilbild aktualisieren</label>
            {{ userDataForm.picture }}
            {{ userDataForm.picture.errors }}
            <!--<input id="avatarInput" name="picture" type="file">-->
        </div>

    </div>

    <div class="post" id="account">

        <h4>Accountverwaltung</h4>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="usernameInput">Username</label>
            <!--<input name="userID" type="hidden" value="{{ user.id }}" />-->
            {{ userForm.username }}
            <!--<input class="form-control" id="usernameInput" name="username" type="text" value="{{ user.username }}" disabled />-->
            <p class="help-block">Der Username kann nicht ver&auml;ndert werden.</p>
            {{ userForm.username.errors }}
        </div>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="emailInput">E-Mail</label>
            {{ userForm.email }}
            {{ userForm.email.errors }}
            <!--<input class="form-control" id="emailInput" name="email" type="email" value="{{ user.email }}" />-->
        </div>

        <div class="col-xs-12 col-sm-6 form-group">
            <label class="control-label" for="pw1Input">Passwort</label>
            {{ userForm.password }}
            {{ userForm.password.errors }}
            <!--<input class="form-control" id="pw1Input" name="password" type="password" value="{{ user.password }}" />-->
        </div>    
        <div class="col-xs-12 col-sm-6 form-group pull-right">
            <label class="control-label" for="pw2Input">Passwort bestätigen</label>

            {{ userForm.password.errors }}
            <!--<input class="form-control" id="pw2Input" type="password" value="{{ user.password }}" />-->
        </div>

    </div>  

    <div class="post" id="daten">

        <h4>Pers&ouml;nliche Daten</h4>

        <div class="col-xs-12 col-sm-6 form-group">
            <label class="control-label" for="vornameInput">Vorname</label>
            {{ userForm.first_name }}
            {{ userForm.first_name.errors }}
            <!--<input class="form-control" id="vornameInput" name="vorname" type="text" value="{{ user.first_name }}" />-->
        </div>    
        <div class="col-xs-12 col-sm-6 form-group pull-right">
            <label class="control-label" for="nachnameInput">Nachname</label>
            {{ userForm.last_name }}
            {{ userForm.last_name.errors }}
            <!--<input class="form-control" id="nachnameInput" name="nachname" type="text" value="{{ user.last_name }}" />-->
        </div>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="studiengangInput">Studiengang</label>
            {{ userDataForm.academicDiscipline }}
            <!--<input class="form-control" id="studiengangInput" name="studiengang" type="text" value="{{ user.academicDiscipline }}" />-->
            <p class="help-block">Über deinen Studiengang wirst Du bestimmten Gruppen zugeordnet.</p>
            {{ userDataForm.academicDiscipline.errors }}
        </div>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="matrikelNummerInput">Matrikel-Nummer</label>
            {{ userDataForm.studentNumber }}
            <!--<input class="form-control" id="matrikelNummerInput" name="matrikelnummer" type="number" value="{{ user.studentNumber }}" />-->
            <p class="help-block">Über deine Matrikel-Nummer kannst Du eindeutig als Student der TU Berlin identifiziert werden.</p>
            {{ userDataForm.studentNumber.errors }}
        </div>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="wohnortInput">Wohnort</label>
            {{ userDataForm.location }}
            {{ userDataForm.location.errors }}
            <!--<input class="form-control" id="wohnortInput" name="wohnort" type="text" value="{{ user.location }}" />-->
        </div>

    </div>  

    <div class="post" id="seite">

        <h4>Seiteneinstellungen</h4>

        <div class="col-xs-12 form-group">
            <label class="control-label" for="stdSafetylevelSelect">Standard-Sicherheitsstufe</label>
            <select class="form-control" id="stdSafetylevelSelect" name="safety">
                <option>public</option>
                <option>Uni</option>
                <option>Fakultät</option>
                <option selected>Studiengang</option>
            </select>
        </div>

    </div>

    <div class="post" id="delete">

        <h4>Account vollst&auml;ndig l&ouml;schen</h4>

        <div class="col-xs-12 form-group text-center">
            <p class="help-block">&Uuml;ber diesen Button kannst Du deinen Account vollst&auml;ndig von unserer Plattform entfernen. Zur Best&auml;tigung der L&ouml;schung erh&auml;lst Du eine E-Mail an deine uns bekannte E-Mail Adresse.</p>
            <button type="button" class="btn btn-primary text-center" id="deleteButton">Account löschen</button>
        </div>

    </div>

    <div class="col-xs-12 form-group text-center">
        <button type="submit" class="btn btn-primary" id="submitSettButton">Speichern</button>
        <button type="reset" class="btn btn-default" id="resetSettButton">Zur&uuml;cksetzen</button>
    </div>

</form>

我完全不知道如何处理它。所以我会感激各种帮助！

招呼

2 个答案:

答案 0 :(得分：1)

您永远不会将POST数据传递给表单：因此它保持未绑定状态，并且不会通过验证。您需要执行userDataForm = UserDataForm(request.POST, instance=userProfile)

更糟糕的是，您已明确定义了表单'__init__方法，以便它们甚至不接受除实例之外的任何参数 - 因此不可能随后填充数据。另外，它们实际上吞下了instance参数，并且没有将它传递给超类，因此它实际上被忽略了。您应该像这样定义它们：

def __init__(self, *args, **kwargs):
    instance = kwargs.get('instance')
    super(UserDataForm, self).__init__(*args, **kwargs)

答案 1 :(得分：0)

您需要通过直接将request.POST传递给视图来实例化userForm - 您正在传递用户模型实例。

尝试： .data msg1: .asciiz "> " msg2: .asciiz "type 'c' to copy \n>" .align 2 array: .space 400 .text main: la $t3 array loop: la $a0, msg1 #output message 1 li $v0, 4 syscall li $v0, 5 #read integer input syscall move $t0, $v0 beq $t0, -99, endloop #loop until user types -99 beq $t1,30,endloop #get user input up to 30 times addi $t1, $t1, 1 #counter sw $t0,($t3) addi $t3,$t3,4 b loop #loop until it reaches 30 endloop: la $a0, msg2 #output message 2 li $v0, 4 syscall li $v0, 12 #read character input syscall beq $v0, 'c', COPY j NEXT COPY: NEXT:

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