I’m encountering an issue where the {% include %} template tag in Django is modifying the structure of my HTML elements, specifically <form> tags and their attributes. This behavior occurs when rendering a partial template dynamically via jQuery.
Context:
I have a view that dynamically renders a partial template (tabela_mensal.html) via a standard Django render method without any apparent issues:
return render(request, 'parciais/projeto/extrato/livre-movimento-investimento/tabela-mes/tabela-mensal.html', context)
The tabela_mensal.html template contains a table displaying bank account statements. For each row in the table, I include modal templates using {% include %}, one of which contains a form for editing a record.
{% for extrato in extrato_investimento %}
<tr>
...
{% include 'parciais/projeto/extrato/livre-movimento-investimento/modais/modal-edicao.html' %}
{% endfor %}
The modal template (modal-edicao.html) includes a <form> with several input fields. For example:
<form id="form-edit-linha-extrato-livre-investimento-{{ extrato.pk|slugify }}" method="post" action="{% url 'projeto:editar_linha_extrato_livre_investimento' extrato.pk|slugify %}">
<input type="hidden" name="csrfmiddlewaretoken" value="{{ csrf_token }}">
<div>
<label for="data-{{ extrato.pk|slugify }}">Date</label>
<input type="date" name="data" id="data-{{ extrato.pk|slugify }}" value="{{ extrato.data|date:"Y-m-d" }}">
</div>
</form>
When rendered, the <form> tag unexpectedly closes immediately and appears to be altered, resulting in the following output:
<div class="modal-body">
<form id="form-edit-linha-extrato-livre-investimento-4118" method="post" action="/editar_linha_extrato_livre/4118/"></form>
<input type="hidden" name="csrfmiddlewaretoken" value="...">
<div>
<label for="data-4118">Date</label>
<input type="date" name="data" id="data-4118" value="2024-10-01">
</div>
</div>
This behavior causes the <input> fields to be rendered outside the <form> tag, breaking the form’s structure.
Further, on a subsequent rendering, the form attribute is removed entirely from the associated inputs, as demonstrated below:
<div class="modal-body">
<input type="hidden" name="csrfmiddlewaretoken" value="...">
<div>
<label for="data-136">Date</label>
<input type="date" name="data" id="data-136" value="2024-10-01">
</div>
</div>
Steps to Reproduce:
- Create a Django template that uses
{% include %}inside aforloop to render modal templates dynamically. - The included modal template should contain a
<form>tag with associated inputs. - Render the parent template dynamically (e.g., via jQuery).
Expected Behavior:
The {% include %} tag should not alter or close the <form> tag prematurely. The form and its child elements should render as defined in the template.
Actual Behavior:
The <form> tag is closed immediately, rendering the input fields outside the form. On subsequent renders, the form attribute in the input elements disappears entirely.
Questions:
- Is this the intended behavior of
{% include %}when handling<form>elements? - If so, is there a recommended way to handle partial templates with nested forms in Django?
Environment:
- Django version: 4.2.10
- Python version: 3.11.6
- Operating system: Ubuntu 24.04 LTS
Javascript example (inside in loop):
function carregarTabelaMesLivreInvestimento(targetId, month, year) {
if (!$(targetId).data('loaded')) {
$('#loading-icon').show();
var projectId = '{{ extrato.projeto.id }}';
var url_inicial = "{% url 'projeto:carregar_tabela_mes_livre_investimento' 0 %}";
const url = url_inicial.replace('0', projectId);
yearString = String(year).replace(/\s+/g, '');
$.ajax({
url: url,
data: {'mes': month, 'ano': yearString},
success: function(data) {
$(targetId).html(data);
$('#loading-icon').hide();
},
error: function (jqXHR, textStatus, errorThrown) {
console.error('Error loading data:', textStatus, errorThrown);
$('#loading-icon').hide();
}
});
}
}
$('#btn-edit-linha-extrato-livre-investimento-{{ extrato.pk|slugify }}').on('click', function (event) {
// Localiza todos os inputs relacionados e cria um formulário dinamicamente
var $inputs = $(this).closest('.modal-body').find('input, select, textarea');
var formData = {};
$inputs.each(function () {
var name = $(this).attr('name');
if (name) {
formData[name] = $(this).val();
}
});
console.log("formData:", formData); // Verificando os dados coletados dos inputs
// Gerar a URL no JavaScript
var actionUrlTemplate = "{% url 'projeto:editar_linha_extrato_livre_investimento' 0 %}";
var actionUrl = actionUrlTemplate.replace('0', '{{ extrato.pk }}');
console.log("actionUrl:", actionUrl); // Verificando a URL gerada
// Obter o token CSRF diretamente do meta tag
var csrfToken = $('meta[name="csrf-token"]').attr('content');
console.log("csrfToken:", csrfToken); // Verificando o token CSRF
// Adicionar o token CSRF ao formData
formData['csrfmiddlewaretoken'] = csrfToken;
// Identificar a aba ativa e carregar informações dela
var $activeTab = $('#extrato02-tab-pane .nav-link.active');
var month = $activeTab.data('month');
var year = $activeTab.data('year');
var targetId = $activeTab.data('bs-target');
console.log("month:", month, "year:", year, "targetId:", targetId);
// Enviar a requisição AJAX
$.ajax({
type: "POST",
url: actionUrl,
data: formData,
success: function (response) {
console.log("response:", response); // Verificando a resposta do servidor
if (response.status === 'success') {
carregarTabelaMesLivreInvestimento(targetId, month, year);
} else {
alert('Erro ao salvar: ' + response.errors);
}
},
error: function (xhr, status, error) {
console.log("xhr:", xhr); // Verificando o objeto xhr
console.log("status:", status); // Verificando o status
console.log("error:", error); // Verificando o erro
alert('Erro ao processar a solicitação: ' + status);
}
});
});