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# Generates dynamic file content on the fly from the DB |
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from pyramid.events import subscriber |
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from pyramid.events import BeforeRender |
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from pyramid.httpexceptions import HTTPFound |
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from pyramid.renderers import render |
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from pyramid.renderers import render_to_response |
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from pyramid.response import Response |
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from pyramid.response import FileResponse, FileIter |
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from pyramid.view import view_config, forbidden_view_config |
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from .models import * |
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from .models.model import * |
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from .models import user as __user |
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from .models.user import User |
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from .models.item import Item |
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from .models.box import Box |
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from .models.box_item import BoxItem |
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from .models.transaction import Transaction, Deposit, CashDeposit, BTCDeposit, Purchase |
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from .models.transaction import Inventory, InventoryLineItem |
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from .models.transaction import PurchaseLineItem, SubTransaction, SubSubTransaction |
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from .models.account import Account, VirtualAccount, CashAccount |
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from .models.event import Event |
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from .models import event as __event |
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from .models.vendor import Vendor |
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from .models.item_vendor import ItemVendor |
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from .models.box_vendor import BoxVendor |
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from .models.request import Request |
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from .models.announcement import Announcement |
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from .models.btcdeposit import BtcPendingDeposit |
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from .models.receipt import Receipt |
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from .models.pool import Pool |
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from .models.pool_user import PoolUser |
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@view_config(route_name='dynamic_item_img') |
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def dynamic_item_img(request): |
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item = Item.from_id(request.matchdict['item_id']) |
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response = Response(content_type='image/jpeg') |
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class Hack(): |
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def __init__(self, img): |
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self.img = img |
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self.idx = 0 |
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def getattr(self, item): |
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print("item {}".format(item)) |
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raise AttributeError |
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def __getattr(self, item): |
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print("item {}".format(item)) |
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raise AttributeError |
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def read(self, block_size = None): |
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if self.idx >= len(self.img): |
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return '' |
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if block_size is None: |
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self.idx = len(self.img) |
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return self.img |
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if self.idx + block_size > len(self.img): |
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r = self.img[self.idx:] |
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self.idx = len(self.img) |
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return r |
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else: |
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r = self.img[self.idx:block_size] |
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self.idx += block_size |
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return r |
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def close(self): |
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pass |
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h = Hack(item.img.img) |
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response.app_iter = FileIter(h) |
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return response |
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um-cseg /
chez-betty
