RML模板

Question

Django文档为ReportLab提供了以下示例。

from reportlab.pdfgen import canvas
from django.http import HttpResponse

def some_view(request):
    # Create the HttpResponse object with the appropriate PDF headers.
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'

    # Create the PDF object, using the response object as its "file."
    p = canvas.Canvas(response)

    # Draw things on the PDF. Here's where the PDF generation happens.
    # See the ReportLab documentation for the full list of functionality.
    p.drawString(100, 100, "Hello world.")

    # Close the PDF object cleanly, and we're done.
    p.showPage()
    p.save()
    return response

但是。我想使用RML生成我的PDF。 ReportLab Plus提供了rml2pdf函数，可以使用与Django模板相似的标记将RML文档转换为PDF。如何为Django提供RML模板，并让Django在API响应中返回PDF，类似于文档中的示例？

Answer 1

弄清楚了。

RML模板

将其放在Django模板文件夹中，以便Django可以找到它。

命名为templates/rml_template.rml

<!DOCTYPE document SYSTEM "rml.dtd">
<document filename="example_01.pdf">
 <template>
 <!--this section contains elements of the document -->
 <!--which are FIXED into position. -->
 <pageTemplate id="main">
 <frame id="first" x1="100" y1="400" width="150" height="200"/>
 </pageTemplate>
 </template>
 <stylesheet>
 <!--this section contains the STYLE information for -->
 <!--the document, but there isn't any yet. The tags still -->
 <!--have to be present, however, or the document won't compile.-->
 </stylesheet>
 <story>
 <!--this section contains the FLOWABLE elements of the -->
 <!--document. These elements will fill up the frames -->
 <!--defined in the <template> section above. -->
 <para>
 Welcome to RML!
 </para>
 <para>
 This is the "story". This is the part of the RML document where
 your text is placed.
 </para>
 <para>
 It should be enclosed in "para" and "/para" tags to turn it into
 paragraphs.
 </para>
 </story>
</document>

Django视图

此视图以字符串形式加载模板，rml2pdf使用响应对象作为要写入的“文件”，类似于Django文档示例。

from django.template import loader
from rlextra.rml2pdf import rml2pdf
from django.http import HttpResponse


def some_view(request):
    # Create the HttpResponse object with the appropriate PDF headers.
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'

    context = {} # You can add values to be inserted into the template here

    rml = str(loader.render_to_string('rml_template.rml', context))
    rml2pdf.go(rml, outputFileName=response)

    return response

如何创建返回RML生成的PDF的DjRF API端点？

1 个答案:

RML模板

Django视图