[英]How To Populate Table With Filtered Data in Django
我正在嘗試使用url參數從Manifests模型中過濾出一組數據來填充表。
我認為我遇到的問題在Views.py行中
manifests = Manifests.objects.all().filter(reference=reference_id)
型號
class Manifests(models.Model):
reference = models.ForeignKey(Orders)
cases = models.IntegerField()
description = models.CharField(max_length=1000)
count = models.IntegerField()
def __str__(self):
return self.description
Urls.py
url(r'^add_manifest/(?P<reference_id>\d+)/$', add_manifest, name='add_manifest'),
Views.py
def add_manifest(request, reference_id):
if request.method == "POST":
form = CreateManifestForm(request.POST)
if form.is_valid():
instance = form.save(commit=False)
try:
order = Orders.objects.get(id=reference_id)
except Orders.DoesNotExist:
pass
instance.reference = order
instance.save()
return redirect('add_manifest', reference_id=reference_id)
form = CreateManifestForm()
#manifests = Manifests.objects.all()
manifests = Manifests.objects.all().filter(reference=reference_id)
context = {
'form': form,
'reference_id': reference_id,
'manifests' : manifests,
}
return render(request, 'add_manifest.html', context)
模板(add_manifest.html)
{% extends 'base.html' %}
{% block body %}
<div class="container">
<form method="POST">
<br>
<br>
<br>
{% csrf_token %}
<div class="column">
<label for="form.reference">Reference ID: </label><br>
<input type="text" value="{{ reference_id }}">
<br>
</div>
<div class="description">
<div class="column">
<label for="form.description">Description: </label>
<br>
{{ form.description}}
</div>
</div>
<div class="column">
<label for="form.cases">Cases: </label>
<br>
{{ form.cases }}
<br>
</div>
<div class="column">
<label for="form.count">Count: </label>
<br>
{{ form.count }}
<br>
<br>
</div>
<br>
<br>
<button type="submit" name="add_mani" style="border-color: #7395AE;">Add Line</button>
</form>
<br>
<h4>Manifest</h4>
<div class="table-responsive">
<table class="table table-striped table-bordered manifest_table" cellspacing="0" style="width="100%">
<thead>
<tr>
<th></th>
<th style="width:10%;">Ref ID</th>
<th style="width:10%;">Cases</th>
<th style="width:60%;">Description</th>
<th style="width:10%;">Count</th>
</tr>
</thead>
<tbody>
{% for manifests in manifests %}
<tr>
<td>
<a href="{% url 'edit_manifest_browse' manifests.pk %}" class="btn btn-default btn-sm" role="button">Edit</a>
</td>
<td>{{ manifests.reference }}</td>
<td>{{ manifests.cases }}</td>
<td>{{ manifests.description}}</td>
<td>{{ manifests.count}}</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
<div class="text-center">
<button type="submit" class="btn btn-primary" name="button" align="right">Subit Manifest</button>
</div>
</div>
我希望該表僅顯示清單模型中的引用= URL中的reference_id的行。 當前它不能正常工作,表只是空的。
像這樣更改for循環變量名稱:
{% for manifest in manifests %}
<tr>
<td>
<a href="{% url 'edit_manifest_browse' manifests.pk %}" class="btn btn-default btn-sm" role="button">Edit</a>
</td>
<td>{{ manifest.reference }}</td>
<td>{{ manifest.cases }}</td>
<td>{{ manifest.description}}</td>
<td>{{ manifest.count}}</td>
</tr>
{% endfor %}
如果reference_id
有任何Manifest
對象,則它將在模板中呈現它們。
您的表格可能沒有通過驗證。 因此,呈現表單錯誤是一個好主意:
# view
def add_manifest(request, reference_id):
form = CreateManifestForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
instance = form.save(commit=False)
try:
order = Orders.objects.get(id=reference_id)
instance.reference = order
except Orders.DoesNotExist:
pass
instance.save()
manifests = Manifests.objects.all().filter(reference=reference_id)
context = {
'form': form,
'reference_id': reference_id,
'manifests' : manifests,
}
return render(request, 'add_manifest.html', context)
並更新模板以顯示模板中的錯誤:
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div>
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endfor %}
{% for error in form.non_field_errors %}
<div>
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endif %}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.