为什么在这个例子中图像高度变得如此之大? [英] Why does image height get so large in this example?
问题描述
我正在计算图片高度serverside为动态图片提供服务,但每隔一段时间HTML中的高度就会变得太大:
< div class =item_imagestyle =height:1116px>
为什么当照片显示为1116像素具有 get_serving_url
的服务器实际上不是1116px,所以我可能在我的算法中犯了一些错误:
class NewAdHandler(BaseHandler):
$ b $ get_ad(self,key):
data = memcache.get(key)
如果数据不是None :
返回数据
else:
data = Ad.get_by_id(long(key))
memcache.add(key,data,6000)
返回数据
$ b $ def get_image(self,ad):
data = memcache.get(str(ad.key()))
如果数据不是无:
返回数据
else:
data = ad.matched_images.get()
memcache.add(s tr(ad.key()),data,6000)
返回数据
def get_images(self,ad):
data = memcache.get(str(ad.key ())+'images')
如果数据不是无:
返回数据
else:
data = ad.matched_images
memcache.add(str(ad .key())+'images',data,6000)
返回数据
def get(self,id,html):
logging.debug('logged in% s',self.logged_in)
region = None
city = None
ad = self.get_ad(id)
if not ad or not ad.published:
self.error(404)
return
image = self.get_image(ad)
thumb_url = None
height = None#image.get_height()
#logging。 debug('height%d',height)
maxheight = 80
if image:
img = images.Image(blob_key = str(image.primary_image.key()) )
img.im _feeling_lucky()
img.execute_transforms(output_encoding = images.JPEG)
height = img.height
if height< 640:maxheight =高度
logging.debug('height%d',height)
image_url = None
country =''
if self.request.host.find('koolbusiness.com')> -1:country ='印度'
elif self.request.host.find('montao.com')> -1:country ='Brasil'
elif self.request.host.find('hipheap.com')> -1:country ='USA'
if image:
if image.primary_image:
try:
image_url = \
images.get_serving_url(str(image。
size = 640)
thumb_url = \
images.get_serving_url(str(image.primary_image.key()),
size = 120)
除了例外,e:
image_url ='/ images /'+ str(image.key().id())\
+'_small.jpg'
else :
image_url ='/ images /'+ str(image.key().id())\
+'_small.jpg'
imv = []
for我在self.get_images(ad):
img = images.Image(blob_key = str(i.primary_image.key()))
img.im_feeling_lucky()
img .execute_transforms(邻utput_encoding = images.JPEG)
#maxheight = img.height
#if img.height< 640:maxheight = 640
if img.height> maxheight:maxheight = img.height
if i.primary_image:
try:
i1 = \
images.get_serving_url(str(i.primary_image.key()))
imv.append(i1)
除了例外,e:
i1 ='/ images /'+ str(image.key().id())\
+' _small.jpg'
imv.append(i1)
price = ad.price
if ad.geopt and not ad.city:
logging.info('geopt:'+ str(ad.geopt))
url ='http://maps.googleapis.com/maps/api/geocode/json'\
+'?latlng = {},{}& sensor = false'.format(ad.geopt.lat,
ad.geopt.lon)
result = urlfetch.fetch(url)
jsondata = json.loads(result.content)
为jsondata ['results']中的结果:
为re中的组件sult ['address_components']:
如果'administrative_area_level_1'\
在组件['types']中:
region = component ['long_name']。replace('County'
'')
如果'locality'在组件['types']中:
city = component ['long_name']
如果ad.city!= city:
ad.city = city
ad.put()
if ad.region!= region:
ad.region = region
ad.put( )
如果ad.price:#并且不包含分隔符
try:
price = \
i18n.I18n(self.request).format_decimal( int(ad.price))
除了例外,e:
price = ad.price
else:
city = ad。 city
region = ad.region#if ad.region eller get region
if region == None:
region =''
if region ==无:
region =''
regionentity = montaomodel.Region.all()。filter('name =',$ b $ region).get()
cityentity = montaomodel .City.all()。filter('name =',city).get()
logging.debug('is logged in:%s',self.logged_in,)
self.render_jinja(
'view_ad',
image_url = image_url,loggedin = self.logged_in,user = self.current_user,
country = country,
region = ad.region,
regionentity = regionentity,
cityentity = cityentity,
city = city,
imv = imv,request = self.request,
len = len(imv),height = maxheight,
ad = ad,thumb_url = thumb_url,
price = price,VERSI ON = VERSION,
#user_url =(users.create_logout_url(self.request.uri)if users.get_current_user()else None),
admin = users.is_current_user_admin(),
linebreak_txt = (ad.text.replace('\ n','< br>'
)if ad.text else None),
image = image,
logged_in = self.logged_in,
form = AddAdCityForm(),
form_url = self.request.url,
)
模板中的代码是
{%if image_url%}
<! - 主图像 - > < div class =item_imagestyle =height:{{height}} px>
< div class =item_arrow_leftstyle =height:428px> < i class =sprite_vi_arrow_leftstyle =margin-top:200px>< / i> < / DIV> < div class =image_container> < img src ={{image_url}}id =main_image_0alt ={{ad.title}}title =点击查看下一张图片> {%endfor%}
你能告诉我我能做些什么吗?此问题的实时视图此处。
为什么要指定height:1116px ... height:auto应该照顾你需要的东西吗?
感谢
AB
I'm calculating image height serverside to serve dynamic images but every once in a while the height in HTML becomes way too large:
<div class="item_image" style="height: 1116px">
Why is it so much as 1116px when the pics that a server with get_serving_url
actually are not 1116px so I'm probably making some mistake in my algorithm:
class NewAdHandler(BaseHandler):
def get_ad(self, key):
data = memcache.get(key)
if data is not None:
return data
else:
data = Ad.get_by_id(long(key))
memcache.add(key, data, 6000)
return data
def get_image(self, ad):
data = memcache.get(str(ad.key()))
if data is not None:
return data
else:
data = ad.matched_images.get()
memcache.add(str(ad.key()), data, 6000)
return data
def get_images(self, ad):
data = memcache.get(str(ad.key()) + 'images')
if data is not None:
return data
else:
data = ad.matched_images
memcache.add(str(ad.key()) + 'images', data, 6000)
return data
def get(self, id, html):
logging.debug('logged in %s', self.logged_in)
region = None
city = None
ad = self.get_ad(id)
if not ad or not ad.published:
self.error(404)
return
image = self.get_image(ad)
thumb_url = None
height = None#image.get_height()
#logging.debug('height %d', height)
maxheight = 80
if image:
img = images.Image(blob_key=str(image.primary_image.key()))
img.im_feeling_lucky()
img.execute_transforms(output_encoding=images.JPEG)
height = img.height
if height < 640: maxheight = height
logging.debug('height %d', height)
image_url = None
country = ''
if self.request.host.find('koolbusiness.com') > -1: country = 'India'
elif self.request.host.find('montao.com') > -1: country = 'Brasil'
elif self.request.host.find('hipheap.com') > -1: country = 'USA'
if image:
if image.primary_image:
try:
image_url = \
images.get_serving_url(str(image.primary_image.key()),
size=640)
thumb_url = \
images.get_serving_url(str(image.primary_image.key()),
size=120)
except Exception, e:
image_url = '/images/' + str(image.key().id()) \
+ '_small.jpg'
else:
image_url = '/images/' + str(image.key().id()) \
+ '_small.jpg'
imv = []
for i in self.get_images(ad):
img = images.Image(blob_key=str(i.primary_image.key()))
img.im_feeling_lucky()
img.execute_transforms(output_encoding=images.JPEG)
#maxheight = img.height
#if img.height < 640: maxheight = 640
if img.height > maxheight: maxheight = img.height
if i.primary_image:
try:
i1 = \
images.get_serving_url(str(i.primary_image.key()))
imv.append(i1)
except Exception, e:
i1 = '/images/' + str(image.key().id()) \
+ '_small.jpg'
imv.append(i1)
price = ad.price
if ad.geopt and not ad.city:
logging.info('geopt:' + str(ad.geopt))
url = 'http://maps.googleapis.com/maps/api/geocode/json' \
+ '?latlng={},{}&sensor=false'.format(ad.geopt.lat,
ad.geopt.lon)
result = urlfetch.fetch(url)
jsondata = json.loads(result.content)
for result in jsondata['results']:
for component in result['address_components']:
if 'administrative_area_level_1' \
in component['types']:
region = component['long_name'].replace('County'
, '')
if 'locality' in component['types']:
city = component['long_name']
if ad.city != city:
ad.city = city
ad.put()
if ad.region != region:
ad.region = region
ad.put()
if ad.price: # and doesn't contain separators
try:
price = \
i18n.I18n(self.request).format_decimal(int(ad.price))
except Exception, e:
price = ad.price
else:
city = ad.city
region = ad.region # if ad.region eller get region
if region == None:
region = ''
if region == None:
region = ''
regionentity = montaomodel.Region.all().filter('name =',
region).get()
cityentity = montaomodel.City.all().filter('name =', city).get()
logging.debug('is logged in: %s', self.logged_in,)
self.render_jinja(
'view_ad',
image_url=image_url,loggedin=self.logged_in, user= self.current_user,
country = country,
region=ad.region,
regionentity=regionentity,
cityentity=cityentity,
city=city,
imv=imv,request=self.request,
len=len(imv),height=maxheight,
ad=ad,thumb_url=thumb_url,
price=price,VERSION=VERSION,
#user_url=(users.create_logout_url(self.request.uri) if users.get_current_user() else None),
admin=users.is_current_user_admin(),
linebreak_txt=(ad.text.replace('\n', '<br>'
) if ad.text else None),
image=image,
logged_in = self.logged_in,
form=AddAdCityForm(),
form_url=self.request.url,
)
The code in the template is
{% if image_url %}
<!-- Main Images --> <div class="item_image" style="height: {{height}}px">
<div class="item_arrow_left" style="height: 428px"> <i class="sprite_vi_arrow_left" style="margin-top: 200px"></i> </div> <div class="image_container"> <img src="{{image_url}}" id="main_image_0" alt="{{ad.title}}" title="Click for next image"> {% for im in imv %} <img src="{{im}}" class="hidden" id="main_image_{{loop.index}}" alt="{{ad.title}}" class="thumb_image_single" title="Click for next image">
{% endfor %}
Can you tell me what I can do about the problem? A live view of the problem is here.
Why you want to specify height:1116px...height:auto should take care of what you need right?
Thanks AB
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