我在shop.rb
:
def geocode_address
if !address_geo.blank?
geo=Geokit::Geocoders::MultiGeocoder.geocode(address_geo)
errors.add(:address, "Could not Geocode address") if !geo.success
self.lat, self.lng = geo.lat,geo.lng if geo.success
end
end
# Checks whether this object has been geocoded or not. Returns the truth
def geocoded?
lat? && lng?
end
在我的shops_controller.rb
:
def update
@shop = Shop.find(params[:id])
if @shop.update_attributes(params[:shop])
flash[:notice] = "Successfully saved."
redirect_to shop_path(@shop, :type => @shop.shop_type)
else
render :action => :edit
end
end
现在,当用户首次创建条目时,地址将进行地理编码,并将纬度和经度保存到数据库中。
但是当用户更新地址时,纬度和经度将不再进行地理编码,因此仍然使用旧的纬度和经度,这是第一次保存。
如果每次更新条目时如何编写Rails重新地理编码?
我不能仅依赖地址,因为geokit中存在一个错误,当我尝试根据地址显示多个地图时,只会显示最后一个地图。
我正在使用geokit,Gmaps,Google地图......
感谢。
答案 0 :(得分:2)
我把它放在我的模型中:
before_validation_on_update :geocode_address
答案 1 :(得分:0)
如果用户更改了他们的地址,您基本上不能像新地址一样处理它吗?您基本上只需要2个新地址即可将新创建的地址与用户的帐户相关联,一切都应该有效。
答案 2 :(得分:0)
在执行特定操作之前执行验证的新语法为:
before_validation :geocode_address, on: :update
或者如果您有多个动作,
before_validation :geocode_address, on: %i[create update]
这将确保在完成验证并保存到数据库之前,首先运行您的方法(geocode_address
)。
答案 3 :(得分:0)
更好地使用Geocoder Gem https://github.com/alexreisner/geocoder
实际上,在模型shop.rb中,您将需要添加以下内容,以确保每次用户更新视图中的地址时,商店表中的经度和纬度字段都会更新。
宝石文件
gem 'geocoder', '~> 1.4'
您应该在Shop表中添加两个字段,经度和纬度,确保它们都是浮点数,如果尚未进行迁移,请进行迁移。
假设address
是一个字段并且它存在于您的商店表中,并且假设location.html.erb
是您商店中的一个视图,并且在该视图中您具有类似的内容
<%= f.text_field :address, placeholder: "Your Shop's Address", class: "form-control", required: true, id: "shopaddress" %>
我还假设,当您创建商店模型时,您添加了属性active:boolean
和user:references
来了解商店是否处于活动状态,并知道该商店属于哪个用户。因此,一个用户有很多商店。
ID商店地址,如果您想将Geocomplete gem与Google Maps API和地方信息库一起使用,则包括在这里。但是您在那里不需要它。
在 shop.rb
中geocoded_by :address
# Will Update if changed
after_validation :geocode, if: :address_changed?
当然,在您的控制器中,您将要确保先更新地址的人都被授权,然后再运行方法。因此,不必重复自己的生活。您可能需要在商店控制器中创建类似的内容。
在 shops_controller.rb
class ShopsController < ApplicationController
# If your shop owners are creating many shops you will want to add
#your methods here as well with index. Eg. :create, :new
# In case you have a view shop page to show all people
before_action :set_shop, except: [:index]
before_action :authenticate_user!, except: [:show]
# I am assuming that you also want to update other fields in your
#shop and the address isn't the only one.
before_action :is_user_authorised, only: [:name_x, :name_y, :name_z, :location, :update]
def index
@shops = current_user.shops
end
def show
@photos = @shop.photos
@product_reviews = @shop.product_reviews
end
def name_x
end
def name_y
end
def name_z
end
def location
end
def update
new_params = shop_params
# To ensure the shop is actually published
new_params = shop_params.merge(active: true) if is_shop_ready
if @shop.update(new_params)
flash[:notice] = "Saved..."
else
flash[:alert] = "Oh oh hmm! something went wrong..."
end
redirect_back(fallback_location: request.referer)
end
private
def set_shop
@shop = Shop.find(params[:id])
end
def is_user_authorised
redirect_to root_path, alert: "You don't have permission" unless
current_user.id == @shop.user_id
end
# You can play with this here, what defines a ready shop?
def is_shop_ready
!@shop.active && !@shop.name_x.blank? &&
!@shop.name_y.blank? && !@shop.name_z.blank? &&
!@shop.address.blank?
end
# Here you are allowing the authorized user to require her shop and it's properties, so that she can update them with update method above.
# eg_summary, eg_shop_type, eg_shop_name are just additional #example properties that could have been added when you iniitially created your Shop model
def shop_params
params.require(:shop).permit(:address, :active, :eg_shop_name, :eg_shop_summary, :eg_shop_type)
end
end