85 lines
3.2 KiB
Python
85 lines
3.2 KiB
Python
from docxtpl import DocxTemplate, Listing, InlineImage
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from jinja2 import Environment, DictLoader
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from docx.shared import Inches
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from io import BytesIO
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import copy
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class JinjaService:
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"""Service for Jinja2 templates.
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Includes the ability to embed templates inside templates, using task.data.
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-- In task.data
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name = "Dan"
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my_template = "Hi {{name}}, This is a jinja template too!"
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-- In Element Documentation
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Please Introduce yourself.
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{% include 'my_template' %}
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Cool Right?
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-- Produces
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Please Introduce yourself.
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Hi Dan, This is a jinja template too!
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Cool Right?
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"""
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@staticmethod
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def get_content(input_template, data):
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templates = data
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templates['main_template'] = input_template
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jinja2_env = Environment(loader=DictLoader(templates))
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# We just make a call here and let any errors percolate up to the calling method
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template = jinja2_env.get_template('main_template')
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return template.render(**data)
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@staticmethod
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def get_word_document_content(binary_stream, task_data, image_file_data=None):
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doc = DocxTemplate(binary_stream)
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doc_context = copy.deepcopy(task_data)
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doc_context = JinjaService().rich_text_update(doc_context)
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# doc_context = JinjaService().append_images(doc, doc_context, image_file_data)
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jinja2_env = Environment(autoescape=True)
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return doc.render(doc_context, jinja2_env)
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def rich_text_update(self, context):
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"""This is a bit of a hack. If we find that /n characters exist in the data, we want
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these to come out in the final document without requiring someone to predict it in the
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template. Ideally we would use the 'RichText' feature of the python-docx library, but
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that requires we both escape it here, and in the Docx template. There is a thing called
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a 'listing' in python-docx library that only requires we use it on the way in, and the
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template doesn't have to think about it. So running with that for now."""
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# loop through the content, identify anything that has a newline character in it, and
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# wrap that sucker in a 'listing' function.
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if isinstance(context, dict):
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for k, v in context.items():
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context[k] = self.rich_text_update(v)
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elif isinstance(context, list):
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for i in range(len(context)):
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context[i] = self.rich_text_update(context[i])
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elif isinstance(context, str) and '\n' in context:
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return Listing(context)
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return context
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def append_images(self, template, context, image_file_data):
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context['images'] = {}
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if image_file_data is not None:
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for file_data_model in image_file_data:
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fm = file_data_model.file_model
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if fm is not None:
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context['images'][fm.id] = {
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'name': fm.name,
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'url': '/v1.0/file/%s/data' % fm.id,
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'image': self.make_image(file_data_model, template)
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}
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return context
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@staticmethod
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def make_image(file_data_model, template):
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return InlineImage(template, BytesIO(file_data_model.data), width=Inches(6.5))
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