Class: Kbam
- Inherits:
-
Object
- Object
- Kbam
- Defined in:
- lib/kbam.rb,
lib/kbam/version.rb
Constant Summary collapse
- SELECT =
query_types
0
- INSERT =
1
- UPDATE =
2
- VERSION =
"0.4.5"
- @@client =
nil
- @@sugar =
false
- @@verbose =
true
Instance Attribute Summary collapse
-
#is_nested ⇒ Object
Returns the value of attribute is_nested.
-
#no_count ⇒ Object
Returns the value of attribute no_count.
Class Method Summary collapse
-
.clear ⇒ Object
REVIEW: double check usage.
-
.connect(login_credentials = nil) ⇒ Object
explicitly connect to database.
-
.escape(string = nil) ⇒ Object
(also: esc)
escapes string uses native mysql2 client.
-
.replace(string = nil, values = nil) ⇒ Object
FIXME: add nil checking.
-
.sanatize(item = nil) ⇒ Object
FIXME: add symbole to string and decimal numbers escapes variable and adds backticks for strings.
-
.sanatize_field(dirty_string) ⇒ Object
for sanatizing fields, tables.
- .sanatize_field!(dirty_string) ⇒ Object
-
.sugar? ⇒ Boolean
check if has syntax sugar.
-
.sugar_please! ⇒ Object
sets sugar REVIEW: add .no_sugar! if possible or instance dependet sugar?.
- .verbose(value) ⇒ Object
Instance Method Summary collapse
-
#as(table_name = nil) ⇒ Object
setter and getter AS.
-
#clear ⇒ Object
What is this? remove?.
- #compose_from ⇒ Object
- #compose_group ⇒ Object
- #compose_having ⇒ Object
- #compose_limit ⇒ Object
- #compose_offset ⇒ Object
- #compose_order ⇒ Object
- #compose_query ⇒ Object
-
#compose_select ⇒ Object
Query composers #.
- #compose_where ⇒ Object
-
#connect(login_credentials) ⇒ Object
DEPRECATED? explicitly connect to database.
-
#count ⇒ Object
(also: #length)
FIXME:.
-
#each ⇒ Object
if instance method then interferes with Array.each implementation!.
-
#error(message) ⇒ Object
interrupts execution creates error output.
-
#execute ⇒ Object
REVIEW/DEPRECATED ? FIXME: query auto execute? –> get? FIXME: needs response/callback!.
-
#field_sanatize(field) ⇒ Object
FIXME: change to class method sanatize field.
- #from(from_string = nil) ⇒ Object
- #get(format = "hash") ⇒ Object (also: #fetch)
-
#get_wheres ⇒ Object
DEPRECATED.
- #group(group_string = nil) ⇒ Object
-
#having(string, *value) ⇒ Object
having API.
- #ignore ⇒ Object
-
#initialize(login_credentials = nil) ⇒ Kbam
constructor
REVIEW/FIXME: remove instance connect?! create instance connection –> for multiple database connections maybe add settings –> allow separate client connections for each instance use? override default class connection if exists –> class fallback.
- #insert(value_pair) ⇒ Object
-
#into(table) ⇒ Object
used together with ‘insert’.
- #limit(limit_int = nil) ⇒ Object
-
#log(message, title = nil) ⇒ Object
prints debug info / log.
- #offset(offset_int = nil) ⇒ Object
-
#or_where(string, *value) ⇒ Object
(also: #where_or, #or)
where API.
- #order(field, direction = nil) ⇒ Object
-
#query(string, *value) ⇒ Object
where API.
-
#replace(string, values) ⇒ Object
takes only an array of values.
- #run ⇒ Object
-
#select(*fields) ⇒ Object
FIXME: check nil / empty.
-
#sort_sanatize(sort) ⇒ Object
FIXME: change to class method senatize sort e.g.
-
#sql ⇒ Object
(also: #to_s, #to_str, #to_sql)
FIXME: raw sql conflict and if not composed yet…
-
#to_json(result) ⇒ Object
REVIEW: using << instead of += –> faster.
- #total ⇒ Object
- #update(value_pair) ⇒ Object
-
#warning(message) ⇒ Object
creates warning continues execution.
-
#where(string, *value) ⇒ Object
(also: #and)
where API.
Constructor Details
#initialize(login_credentials = nil) ⇒ Kbam
REVIEW/FIXME: remove instance connect?! create instance connection –> for multiple database connections maybe add settings –> allow separate client connections for each instance use? override default class connection if exists –> class fallback
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# File 'lib/kbam.rb', line 29 def initialize(login_credentials = nil) if login_credentials != nil warning "avoid connecting to the database for each instance" connect(login_credentials) end # query credentials @selects = Array.new @from = "" @wheres = Array.new @or_wheres = Array.new @group = "" @havings = Array.new @orders = Array.new @limit = 1000 @offset = 0 @query = "" #raw query @as = "t" @into = "" @insert = {} @insert_ignore = "" # will create a INSERT IGNORE statement # meta data @last_query = nil @result = nil @is_nested = false @no_count = false @query_type = SELECT #@count_query = nil # offer block syntax if block_given? yield self end end |
Instance Attribute Details
#is_nested ⇒ Object
Returns the value of attribute is_nested.
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# File 'lib/kbam.rb', line 10 def is_nested @is_nested end |
#no_count ⇒ Object
Returns the value of attribute no_count.
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# File 'lib/kbam.rb', line 12 def no_count @no_count end |
Class Method Details
.clear ⇒ Object
REVIEW: double check usage
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# File 'lib/kbam.rb', line 122 def self.clear @@wheres = Array.new end |
.connect(login_credentials = nil) ⇒ Object
explicitly connect to database
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# File 'lib/kbam.rb', line 75 def self.connect(login_credentials = nil) if login_credentials != nil if @@client == nil if login_credentials.is_a?(String) && login_credentials =~ /.+\.yml/ login_credentials = YAML.load_file(login_credentials) end @@client = Mysql2::Client.new(login_credentials) else warning "you are already connected!" end else error "missing database credentials" end end |
.escape(string = nil) ⇒ Object Also known as: esc
escapes string uses native mysql2 client
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# File 'lib/kbam.rb', line 111 def self.escape(string = nil) Mysql2::Client.escape string.to_s end |
.replace(string = nil, values = nil) ⇒ Object
FIXME: add nil checking
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# File 'lib/kbam.rb', line 150 def self.replace(string = nil, values = nil) i = 0 last_value = nil replaced_string = string.gsub(/\?/) do |match| if i > 0 if values[i] != nil last_value = replacement = self.class.sanatize values[i] else replacement = last_value end else unless values[i] != nil puts "missing argument!" else last_value = replacement = self.class.sanatize values[i] end end i += 1 replacement end return replaced_string end |
.sanatize(item = nil) ⇒ Object
FIXME: add symbole to string
and decimal numbers
escapes variable and adds backticks for strings
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# File 'lib/kbam.rb', line 130 def self.sanatize(item = nil) if item != nil if item.is_a?(Integer) item = item.to_i else item.to_s.strip! if item =~ /\A\d+\Z/ item = item.to_i else item = "'#{Mysql2::Client.escape(item)}'" #item = "'#{item}'" end end else warning "can't sanatize nil class" end return item end |
.sanatize_field(dirty_string) ⇒ Object
for sanatizing fields, tables
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# File 'lib/kbam.rb', line 685 def Kbam.sanatize_field(dirty_string) unless dirty_string.respond_to? :to_s raise ArgumentError, "Cannot convert #{dirty_string.class} into a String" end '`' << dirty_string.to_s.gsub(/[^a-zA-Z0-9_]/, '') << '`' end |
.sanatize_field!(dirty_string) ⇒ Object
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# File 'lib/kbam.rb', line 678 def Kbam.sanatize_field!(dirty_string) dirty_string.replace(Kbam.sanatize_field(dirty_string)) nil end |
.sugar? ⇒ Boolean
check if has syntax sugar
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# File 'lib/kbam.rb', line 93 def self.sugar? return @@sugar end |
.sugar_please! ⇒ Object
sets sugar REVIEW: add .no_sugar! if possible or instance dependet sugar?
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# File 'lib/kbam.rb', line 104 def self.sugar_please! @@sugar = true require 'kbam/sugar.rb' end |
.verbose(value) ⇒ Object
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# File 'lib/kbam.rb', line 97 def self.verbose(value) @@verbose = value end |
Instance Method Details
#as(table_name = nil) ⇒ Object
setter and getter AS
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# File 'lib/kbam.rb', line 232 def as(table_name = nil) if table_name != nil @as = table_name return self else return @as end end |
#clear ⇒ Object
What is this? remove?
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# File 'lib/kbam.rb', line 430 def clear @@wheres = Array.new end |
#compose_from ⇒ Object
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# File 'lib/kbam.rb', line 730 def compose_from unless @from == "" "\nFROM\n #{@from}" else error('No table specifiyed') end end |
#compose_group ⇒ Object
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# File 'lib/kbam.rb', line 738 def compose_group unless @group == "" "\nGROUP BY\n #{@group}" else "" end end |
#compose_having ⇒ Object
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# File 'lib/kbam.rb', line 771 def compose_having unless @havings.empty? return "\nHAVING\n #{(@havings * ' AND ')}" else return "" end end |
#compose_limit ⇒ Object
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# File 'lib/kbam.rb', line 787 def compose_limit unless @limit == nil return "\nLIMIT #{@limit}" else return "\nLIMIT 1000" end end |
#compose_offset ⇒ Object
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# File 'lib/kbam.rb', line 795 def compose_offset unless @offset == nil || @offset == 0 return "\nOFFSET #{@offset}" else return "" end end |
#compose_order ⇒ Object
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# File 'lib/kbam.rb', line 779 def compose_order unless @orders.empty? return "\nORDER BY\n #{(@orders * ', ')}" else return "" end end |
#compose_query ⇒ Object
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# File 'lib/kbam.rb', line 803 def compose_query # join the query fragments query_string = [ compose_select, compose_from, compose_where, compose_group, compose_having, compose_order, compose_limit, compose_offset ] * ' ' unless is_nested if @@verbose log(query_string, "query") end end @last_query = query_string return query_string end |
#compose_select ⇒ Object
Query composers #
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# File 'lib/kbam.rb', line 715 def compose_select select_string = "\nSELECT\n " unless is_nested || @no_count select_string += "SQL_CALC_FOUND_ROWS " end unless @selects.empty? select_string += "#{(@selects * ', ')}" else select_string += "*" end return select_string end |
#compose_where ⇒ Object
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# File 'lib/kbam.rb', line 746 def compose_where unless @wheres.empty? where_string = "\nWHERE\n " i = 0 @wheres.each do |w| if i > 0 if w.sql_where_type == "or" where_string += "\n OR " else where_string += "\n AND " end end where_string += "#{w}" i += 1 end return where_string else return "" end end |
#connect(login_credentials) ⇒ Object
DEPRECATED? explicitly connect to database
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# File 'lib/kbam.rb', line 181 def connect(login_credentials) self.connect(login_credentials) end |
#count ⇒ Object Also known as: length
FIXME:
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# File 'lib/kbam.rb', line 628 def count if @result != nil return @result.count else warning "Can't count for empty result" return nil end end |
#each ⇒ Object
if instance method then interferes with Array.each implementation!
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# File 'lib/kbam.rb', line 606 def each #puts "OBJECT TYPE: #{self.class}" if self.class == Kbam items = get if items != nil items.each do |item| yield item end else puts "Empty result" end else puts "No Kbam object found!" end end |
#error(message) ⇒ Object
interrupts execution creates error output
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# File 'lib/kbam.rb', line 834 def error() = " ERROR: #{}! " error_length = .length puts ("="*error_length).colorize( :color => :red, :background => :white ) puts .colorize( :color => :red, :background => :white ) puts ("="*error_length).colorize( :color => :red, :background => :white ) Kernel::raise end |
#execute ⇒ Object
REVIEW/DEPRECATED ? FIXME: query auto execute? –> get? FIXME: needs response/callback!
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# File 'lib/kbam.rb', line 202 def execute if @@verbose log(@query, "raw sql") end @@client.query(@query) end |
#field_sanatize(field) ⇒ Object
FIXME: change to class method sanatize field
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# File 'lib/kbam.rb', line 665 def field_sanatize(field) field = field.to_s.strip #matches word character and between 2 and 64 character length if field =~ /\A[\w\.]{2,64}\Z/ field.sub!(/\./, "`.`") return "`#{field}`" else error("invalid field name") end end |
#from(from_string = nil) ⇒ Object
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# File 'lib/kbam.rb', line 326 def from(from_string = nil) if from_string.class.name == "Kbam" from_string.is_nested = true @from = "(#{from_string.compose_query}\n )AS #{from_string.as}" else if from_string != nil && from_string.to_s.strip! != "" @from = from_string else error "missing table" end end return self end |
#get(format = "hash") ⇒ Object Also known as: fetch
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# File 'lib/kbam.rb', line 583 def get(format = "hash") format = format.to_s case format when "json" #puts "FETCHING JSON" @result = to_json(@@client.query(compose_query)) when "array" @result = @@client.query(compose_query, :as => :array) else @result = @@client.query(compose_query) end return @result end |
#get_wheres ⇒ Object
DEPRECATED
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# File 'lib/kbam.rb', line 420 def get_wheres @wheres end |
#group(group_string = nil) ⇒ Object
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# File 'lib/kbam.rb', line 342 def group(group_string = nil) if group_string != nil && group_string != "" @group = group_string else warning "group method is empty" end return self end |
#having(string, *value) ⇒ Object
having API
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# File 'lib/kbam.rb', line 494 def having(string, *value) values = *value.to_a having_statement = replace(string, values) if string =~ /\s+or\s+/i having_statement = "(#{having_statement})" end if having_statement != "" @havings.push having_statement end return self end |
#ignore ⇒ Object
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# File 'lib/kbam.rb', line 241 def ignore @insert_ignore = "IGNORE" return self end |
#insert(value_pair) ⇒ Object
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# File 'lib/kbam.rb', line 246 def insert(value_pair) @query_type = INSERT columns = "" values = "" column_count = 0 value_pair.each do |key, value| if column_count != 0 values += ", " columns += ", " end columns += "#{field_sanatize(key.to_s)}" values += "#{self.class.sanatize(value)}" column_count += 1 end @insert = " (#{columns}) VALUES (#{values})" return self end |
#into(table) ⇒ Object
used together with ‘insert’
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# File 'lib/kbam.rb', line 295 def into(table) if @query_type === INSERT @into = "INSERT #{@insert_ignore} INTO #{field_sanatize(table)} " elsif @query_type === UPDATE @into = "UPDATE #{field_sanatize(table)}" end return self end |
#limit(limit_int = nil) ⇒ Object
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# File 'lib/kbam.rb', line 523 def limit(limit_int = nil) if limit_int != nil @limit = limit_int.to_i else @limit = nil end return self end |
#log(message, title = nil) ⇒ Object
prints debug info / log
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# File 'lib/kbam.rb', line 855 def log(, title = nil) if title == nil title = "log" end color_width = 80 title_length = title.length fill = color_width - title_length = "#{}" puts ("-"*color_width).colorize( :color => :black, :background => :white ) puts "#{title.upcase}:#{" " * (fill - 1)}".colorize( :color => :black, :background => :white ) puts ("-"*color_width).colorize( :color => :black, :background => :white ) puts .colorize( :color => :black, :background => :white ) puts ("-"*color_width).colorize( :color => :black, :background => :white ) end |
#offset(offset_int = nil) ⇒ Object
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# File 'lib/kbam.rb', line 534 def offset(offset_int = nil) if offset_int != nil @offset = offset_int.to_i else @offset = nil end return self end |
#or_where(string, *value) ⇒ Object Also known as: where_or, or
where API
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# File 'lib/kbam.rb', line 435 def or_where(string, *value) values = *value.to_a if string.class.name == "Kbam" where_string = "" i = 0 string.get_wheres.each do |w| if i > 0 if w.sql_where_type == "or" where_string += " OR " else where_string += " AND " end end where_string += "#{w}\n " i += 1 end puts "NESTED WHERE: #{where_string}" if where_string =~ /\s+AND\s+/i where_string = "(#{where_string})" end where_string.set_sql_where_type("or") @wheres.push where_string string.clear else if string.sql_prop != nil && string.sql_value != nil or_where_statement = "`#{self.class.escape string.to_s}` #{string.sql_prop} #{self.class.sanatize string.sql_value}" elsif string !~ /\?/ && values.length == 1 or_where_statement = "`#{self.class.escape string.to_s}` = #{self.class.sanatize values[0]}" else or_where_statement = replace(string, values) end if string =~ /\s+AND\s+/i or_where_statement = "(#{or_where_statement})" end if or_where_statement != "" or_where_statement.set_sql_where_type("or") @wheres.push or_where_statement end end return self end |
#order(field, direction = nil) ⇒ Object
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# File 'lib/kbam.rb', line 513 def order(field, direction = nil) if direction == nil direction = 'ASC' end @orders.push "#{field_sanatize(field)} #{sort_sanatize(direction)}" return self end |
#query(string, *value) ⇒ Object
where API
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# File 'lib/kbam.rb', line 186 def query(string, *value) values = *value.to_a query_statement = replace(string, values) if query_statement != "" @query = query_statement end return self end |
#replace(string, values) ⇒ Object
takes only an array of values
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# File 'lib/kbam.rb', line 874 def replace(string, values) warning "DEPRECATED: use class method instead" i = 0 last_value = nil replaced_string = string.to_s.gsub(/\?/) do |match| if i > 0 if values[i] != nil last_value = replacement = self.class.sanatize values[i] else replacement = last_value end else unless values[i] != nil puts "missing argument!" else last_value = replacement = self.class.sanatize values[i] end end i += 1 replacement end return replaced_string end |
#run ⇒ Object
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# File 'lib/kbam.rb', line 305 def run if @query_type === INSERT # execute insert query @query = "#{@into} #{@insert}" execute # return the insert_id @query = "SELECT LAST_INSERT_ID() AS insert_id;" query_result = execute insert_id = query_result.first["insert_id"] return insert_id elsif @query_type === UPDATE # execute insert query @query = "#{@into} #{@update} #{compose_where}" execute return true end end |
#select(*fields) ⇒ Object
FIXME: check nil / empty
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# File 'lib/kbam.rb', line 211 def select(*fields) fields = *fields.to_a fields.each do |field| #remove preceeding and trailing whitespaces and comma cleaned_select = field.to_s.gsub(/\s*\n\s*/, ' ').to_s.sub(/\A\s*,?\s*/, '').sub(/\s*,?\s*\Z/, '')#.gsub(/\s*,\s*/, ", ") #back-quote fieldnames # before NO '?<field>'' cleaned_select.gsub! /(\w+)(?=\s+AS\s+)/ do |match| "#{field_sanatize($1)}" #before 'field' was '$1' end @selects.push(cleaned_select) end return self end |
#sort_sanatize(sort) ⇒ Object
FIXME: change to class method senatize sort e.g. asc / desc
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# File 'lib/kbam.rb', line 696 def sort_sanatize(sort) sort = sort.to_s.strip.upcase #if it matches DESC or DSC if sort =~ /\ADE?SC\Z/ return 'DESC' else return 'ASC' end end |
#sql ⇒ Object Also known as: to_s, to_str, to_sql
FIXME: raw sql conflict and if not composed yet…
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# File 'lib/kbam.rb', line 648 def sql if @query == "" return compose_query else return @query end end |
#to_json(result) ⇒ Object
REVIEW: using << instead of += –> faster
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# File 'lib/kbam.rb', line 546 def to_json(result) json = "{" # loop through rows i = 0 result.each do |row| #add comma after each row if i > 0 then json << ", " end #puts row # use id as json keys json << "#{row["id"]}: {" # remove id row.delete("id") #use rest of fields as json value k = 0 row.each do |key, value| if k > 0 then json << ", " end json << "#{key}: '#{value}'" k += 1 end json << "}" i += 1 end json << "}" return json end |
#total ⇒ Object
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# File 'lib/kbam.rb', line 639 def total if @result != nil && ! @no_count @@client.query("SELECT FOUND_ROWS() AS count").first["count"] else warning "Can't count total for empty result. Or no count error." end end |
#update(value_pair) ⇒ Object
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# File 'lib/kbam.rb', line 271 def update(value_pair) @query_type = UPDATE @update = "SET " column_count = 0 value_pair.each do |key, value| if column_count != 0 @update += ", " end @update += "#{field_sanatize(key.to_s)} = #{self.class.sanatize(value)}" column_count += 1 end return self end |
#warning(message) ⇒ Object
creates warning continues execution
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# File 'lib/kbam.rb', line 846 def warning() = " #{caller[0]} WARNING: #{}! " warning_length = [.length, 80].min puts ("="*warning_length).colorize( :color => :yellow, :background => :white ) puts .colorize( :color => :yellow, :background => :white ) puts ("="*warning_length).colorize( :color => :yellow, :background => :white ) end |
#where(string, *value) ⇒ Object Also known as: and
where API
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# File 'lib/kbam.rb', line 358 def where(string, *value) values = *value.to_a #log string.class.name, "and log" if string.class.name == "Kbam" where_string = "" i = 0 string.get_wheres.each do |w| if i > 0 if w.sql_where_type == "or" where_string += " OR " else where_string += " AND " end end where_string += "#{w}\n " i += 1 end #puts "NESTED WHERE: #{where_string}" if where_string =~ /\s+OR\s+/i where_string = "(#{where_string})" end where_string.set_sql_where_type("and") @wheres.push where_string string.clear else #puts "WHERE public input: #{value}" if string.respond_to?(:sql_prop) && (string.sql_prop != nil && string.sql_value != nil) where_statement = "`#{self.class.escape string.to_s}` #{string.sql_prop} #{self.class.sanatize string.sql_value}" elsif string !~ /\?/ && values.length == 1 where_statement = "`#{self.class.escape string.to_s}` = #{self.class.sanatize values[0]}" else where_statement = replace(string, values) if string =~ /\s+or\s+/i where_statement = "(#{where_statement})" end end if where_statement != "" where_statement.set_sql_where_type("and") @wheres.push where_statement end end #puts "WHERE after public input: #{where_statement}" return self end |