Class: EricWeixin::TwoDimensionCode

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/eric_weixin/two_dimension_code.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.get_long_time_two_dimension_code(options) ⇒ Object

获取永久性二维码对象. 典型使用场景如下： 1.第一步调用此方法先创建/获取二维码对象。 2.使用二维码对象获取二维码下载、展示链接。 如：two_dimension_code.image_url 3.尽情享受带参数的永久二维码吧，很简单，有木有？

参数描述：

  • app_id 微信app_id

  • scene_str 场景值，字符串长度不能超过64位,亦不能为空。

  • action_info 场景值描述（可选）

调用示例：

::EricWeixin::TwoDimensionCode.get_long_time_two_dimension_code app_id: 'wx51729870d9012531', scene_str: 'abc', action_info: 'hello'
::EricWeixin::TwoDimensionCode.get_long_time_two_dimension_code app_id: 'wx51729870d9012531', scene_str: 'bus'



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 37

def self.get_long_time_two_dimension_code options
  BusinessException.raise '场景值不能为空' if options[:scene_str].blank?
  BusinessException.raise '场景值不能超过64字符' if options[:scene_str].length > 63
  ::EricWeixin::TwoDimensionCode.transaction do
     = ::EricWeixin::PublicAccount.find_by_weixin_app_id options[:app_id]
    BusinessException.raise 'app_id不存在' if .blank?
    codes = .two_dimension_codes.where scene_str: options[:scene_str],
                                                     action_name: "QR_LIMIT_STR_SCENE"
    code = if codes.blank?
             code = ::EricWeixin::TwoDimensionCode.new weixin_public_account_id: .id,
                                                     action_name: "QR_LIMIT_STR_SCENE",
                                                     action_info: options[:action_info],
                                                     scene_str: options[:scene_str],
                                                     expire_at: Time.now.chinese_format
             code.save!
             code
           else
             codes[0]
           end
    if not code.ticket.blank?
      return code  #永久性二维码，不需要再次进行更新。
    end
    token = ::EricWeixin::AccessToken.get_valid_access_token_by_app_id app_id: options[:app_id]
    url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=#{token}"
    json = {:action_name => 'QR_LIMIT_STR_SCENE',
            :action_info => {
                :scene => {
                    :scene_str => options[:scene_str]
                }
            }}.to_json
    response = RestClient.post url, json
    response = JSON.parse response.body
    pp response
    code.ticket = response["ticket"]
    code.url = response["url"]
    code.save!
    code
  end
end

.get_short_time_two_dimension_code(options) ⇒ Object

获取临时二维码对象. 典型使用场景如下： 1.第一步调用此方法先创建/获取二维码对象。 2.使用二维码对象获取二维码下载、展示链接。 如：two_dimension_code.image_url 3.尽情享受带参数的永久二维码吧，很简单，有木有？

参数描述：

  • app_id 微信app_id

  • scene_id 场景值，应该是一个数字

  • expire_seconds 过期时间，默认为604800秒，可选

调用示例：

::EricWeixin::TwoDimensionCode.get_short_time_two_dimension_code app_id: 'wx51729870d9012531', scene_id: 1, expire_seconds: 3600
::EricWeixin::TwoDimensionCode.get_short_time_two_dimension_code app_id: 'wx51729870d9012531', scene_id: 2300



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 90

def self.get_short_time_two_dimension_code options
  BusinessException.raise '场景值不能为空' if options[:scene_id].blank?

  ::EricWeixin::TwoDimensionCode.transaction do
     = ::EricWeixin::PublicAccount.find_by_weixin_app_id options[:app_id]
    BusinessException.raise 'app_id不存在' if .blank?
    #查询有效期内的临时二维码
    codes = .two_dimension_codes.where ["scene_id = ? and action_name = ? and expire_at > ?",
                                                      options[:scene_id],
                                                      "QR_SCENE",
                                                      Time.now.chinese_format
                                                     ]

    code = if codes.blank?
             code = ::EricWeixin::TwoDimensionCode.new weixin_public_account_id: .id,
                                                     action_name: "QR_SCENE",
                                                     scene_id: options[:scene_id],
                                                     expire_at: (Time.now + (options[:expire_seconds]||604800).to_i)
             code.save!
             code
           else
             codes[0]
           end
    if not code.ticket.blank?
      return code
    end
    token = ::EricWeixin::AccessToken.get_valid_access_token_by_app_id app_id: options[:app_id]
    url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=#{token}"
    json = {:action_name => 'QR_SCENE',
            :expire_seconds => (options[:expire_seconds]||604800).to_i,
            :action_info => {
                :scene => {
                    :scene_id => options[:scene_id]
                }
            }}.to_json
    response = RestClient.post url, json
    response = JSON.parse response.body
    pp response
    code.ticket = response["ticket"]
    code.url = response["url"]
    code.expire_at = Time.now + (options[:expire_seconds]||604800).to_i
    code.save!
    code
  end
end

.short_url(options) ⇒ Object

长URL转短URL.

参数说明：

  • app_id 微信公众账号的app_id

  • url 需要转短url的链接

调用示例：

EricWeixin::TwoDimensionCode.short_url app_id: 'wx51729870d9012531', url: 'http://mp.wz.qq.com/wiki/10/165c9b15eddcfbd8699ac12b0bd89ae6.html'



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 144

def self.short_url options
  access_token = ::EricWeixin::AccessToken.get_valid_access_token_by_app_id app_id: options[:app_id]
  url = "https://api.weixin.qq.com/cgi-bin/shorturl?access_token=#{access_token}"
  response = RestClient.post url, {action: "long2short", long_url: options[:url]}.to_json
  response = JSON.parse(response.body)
  response["short_url"]
end

Instance Method Details

#check_scene_str_length ⇒ Object 



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 7

def check_scene_str_length
  return if self.scene_str.blank?
  BusinessException.raise '永久性二维码场景值不能超过64位' if self.scene_str.length > 64
end

#encode_ticket ⇒ Object 



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 12

def encode_ticket
  CGI::escape(self.ticket)
end

#image_url ⇒ Object

获取二维码网址.

参数说明

  • 无。

调用示例

::EricWeixin::TwoDimensionCode.image_url



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# File 'app/models/eric_weixin/two_dimension_code.rb', line 21

def image_url
  "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=#{self.encode_ticket}"
end