Module: Waxx::Mysql2
Overview
The MySQL Object methods
Instance Attribute Summary collapse
-
#app ⇒ Object
readonly
Returns the value of attribute app.
-
#columns ⇒ Object
readonly
Returns the value of attribute columns.
-
#db ⇒ Object
readonly
Returns the value of attribute db.
-
#joins ⇒ Object
readonly
Returns the value of attribute joins.
-
#orders ⇒ Object
readonly
Returns the value of attribute orders.
-
#pkey ⇒ Object
readonly
Returns the value of attribute pkey.
-
#table ⇒ Object
readonly
Returns the value of attribute table.
Instance Method Summary collapse
- #/(n) ⇒ Object
- #[](n) ⇒ Object
- #cast(col, val) ⇒ Object
-
#connect(conf = {}) ⇒ Object
Connect to a MySQL/MariaDB database.
- #delete(x, id) ⇒ Object
- #get(x, select: nil, id: nil, joins: nil, where: nil, having: nil, order: nil, limit: nil, offset: nil, view: nil) {|q| ... } ⇒ Object
- #get_by_id(x, id, select = nil, view: nil) ⇒ Object (also: #by_id)
- #get_cols(*args) ⇒ Object
- #has(opts = nil) ⇒ Object
- #init(app: nil, db: "app", table: nil, pk: "id", cols: nil) ⇒ Object
- #order(req_order, default_order = '') ⇒ Object
- #parse_select(select, view) ⇒ Object
- #post(x, data, cols: nil, returning: nil, view: nil, &blk) ⇒ Object
- #put(x, id, data, cols: nil, returning: nil, view: nil, where: nil, &blk) ⇒ Object (also: #patch)
- #put_post(x, id, data, cols: nil, returning: nil, view: nil) ⇒ Object
- #run(x, act, meth, *args) ⇒ Object
- #runs(opts = nil) ⇒ Object
Instance Attribute Details
#app ⇒ Object (readonly)
Returns the value of attribute app
9 10 11 |
# File 'waxx/mysql2.rb', line 9 def app @app end |
#columns ⇒ Object (readonly)
Returns the value of attribute columns
12 13 14 |
# File 'waxx/mysql2.rb', line 12 def columns @columns end |
#db ⇒ Object (readonly)
Returns the value of attribute db
10 11 12 |
# File 'waxx/mysql2.rb', line 10 def db @db end |
#joins ⇒ Object (readonly)
Returns the value of attribute joins
14 15 16 |
# File 'waxx/mysql2.rb', line 14 def joins @joins end |
#orders ⇒ Object (readonly)
Returns the value of attribute orders
15 16 17 |
# File 'waxx/mysql2.rb', line 15 def orders @orders end |
#pkey ⇒ Object (readonly)
Returns the value of attribute pkey
13 14 15 |
# File 'waxx/mysql2.rb', line 13 def pkey @pkey end |
#table ⇒ Object (readonly)
Returns the value of attribute table
11 12 13 |
# File 'waxx/mysql2.rb', line 11 def table @table end |
Instance Method Details
#/(n) ⇒ Object
67 68 69 |
# File 'waxx/mysql2.rb', line 67 def /(n) @columns[n.to_sym] end |
#[](n) ⇒ Object
63 64 65 |
# File 'waxx/mysql2.rb', line 63 def [](n) @columns[n.to_sym] end |
#cast(col, val) ⇒ Object
214 215 216 217 218 219 220 221 222 223 |
# File 'waxx/mysql2.rb', line 214 def cast(col, val) case col[:type].to_sym when :int val.to_s.empty? ? nil : val.to_i when :float, :numeric val.to_s.empty? ? nil : val.to_f else val end end |
#connect(conf = {}) ⇒ Object
Connect to a MySQL/MariaDB database
Set in config.yaml:
databases:
app: mysql2://user:pass@host:port/database?opt1=val1;opt2=val2
23 24 25 |
# File 'waxx/mysql2.rb', line 23 def connect(conf={}) Mysql2::Client.new( conf ) end |
#delete(x, id) ⇒ Object
225 226 227 |
# File 'waxx/mysql2.rb', line 225 def delete(x, id) x.db[@db].query("DELETE FROM #{@table} WHERE #{@pkey} = $1", [id]) end |
#get(x, select: nil, id: nil, joins: nil, where: nil, having: nil, order: nil, limit: nil, offset: nil, view: nil) {|q| ... } ⇒ Object
102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 |
# File 'waxx/mysql2.rb', line 102 def get(x, select:nil, id:nil, joins:nil, where:nil, having:nil, order:nil, limit:nil, offset:nil, view:nil, &blk) Waxx.debug "object.get" select = parse_select(select, view) where = ["#{@table}.#{@pkey} = ?",id] if id and where.nil? # Block SQL injection in order clause. All order options must be defined in @orders. if order if not @orders/order Waxx.debug("ERROR: Object.get order (#{order}) not found in @orders [#{@orders.keys.join(", ")}]. Sorting by #{@pkey} instead.") order = @pkey else order = @orders/order end end if joins.nil? and view joins = view.joins_to_sql end q = {select:select, joins:joins, where:where, having:having, order:order, limit:limit, offset:offset} yield q if block_given? Waxx.debug "object.get.select: #{q[:select]}" return [] if q[:select].empty? sql = [] sql << "SELECT #{q[:select] || "*"}" sql << "FROM #{@table} #{q[:joins]}" sql << "WHERE #{q[:where][0]}" if q[:where] sql << "HAVING #{q[:having[0]]}" if q[:having] sql << "ORDER BY #{q[:order]}" if q[:order] sql << "LIMIT #{q[:limit].to_i}" if q[:limit] sql << "OFFSET #{q[:offset].to_i}" if q[:offset] vals = [] vals << q[:where][1] if q[:where] and q[:where][1] vals << q[:having][1] if q[:having] and q[:having][1] #[sql.join(" "), vals.flatten] Waxx.debug sql Waxx.debug vals.join(", ") x.db[@db].prepare(sql.join(" ")).execute(*(vals.flatten)) end |
#get_by_id(x, id, select = nil, view: nil) ⇒ Object Also known as: by_id
139 140 141 |
# File 'waxx/mysql2.rb', line 139 def get_by_id(x, id, select=nil, view:nil) get(x, id: id, select: select, view: view).first end |
#get_cols(*args) ⇒ Object
71 72 73 74 75 |
# File 'waxx/mysql2.rb', line 71 def get_cols(*args) re = {} args.flatten.map{|a| re[a] = @columns[a.to_sym]} re end |
#has(opts = nil) ⇒ Object
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 |
# File 'waxx/mysql2.rb', line 38 def has(opts=nil) init if @table.nil? return @columns if opts.nil? @columns = opts @columns.each{|n,v| v[:table] = @table v[:column] = n v[:views] = [] v[:label] ||= Waxx::Util.label(n) @orders[n] = v[:order] || n @orders["_#{n}".to_sym] = v[:_order] || "#{n} DESC" @pkey = n if v[:pkey] if v[:is] r, tc = v[:is].split(":") t, c = tc.split(".") @joins[r] = {join: "INNER", table: t, col: c} end if v[:has] r, tc = v[:has].split(":") t, c = tc.split(".") @joins[r] = {join: "LEFT", table: t, col: c} end } end |
#init(app: nil, db: "app", table: nil, pk: "id", cols: nil) ⇒ Object
27 28 29 30 31 32 33 34 35 36 |
# File 'waxx/mysql2.rb', line 27 def init(app:nil, db:"app", table:nil, pk:"id", cols:nil) @app ||= (app || App.table_from_class(name)).to_sym @db ||= db.to_sym @table ||= (table || App.table_from_class(name)).to_sym @pkey ||= pk.to_sym @columns ||= {} @joins ||= {} @orders ||= {} has(cols) if cols end |
#order(req_order, default_order = '') ⇒ Object
229 230 231 232 233 |
# File 'waxx/mysql2.rb', line 229 def order(req_order, default_order='') return default_order if req_order.nil? return orders[req_order.to_sym] if orders.has_key? req_order.to_sym @pkey end |
#parse_select(select, view) ⇒ Object
87 88 89 90 91 92 93 94 95 96 97 98 99 100 |
# File 'waxx/mysql2.rb', line 87 def parse_select(select, view) raise "Can not define both select and view in Waxx::Object.parse_select (#{name})." if select and view return select || "*" if view.nil? view.columns.map{|n,c| raise "Column #{n} not defined in #{view}" if c.nil? if c[:sql_select] "#{c[:sql_select]} AS #{n}" elsif n != c[:column] "#{c[:table]}.#{c[:column]} AS #{n}" else "#{c[:table]}.#{c[:column]}" end }.join(", ") end |
#post(x, data, cols: nil, returning: nil, view: nil, &blk) ⇒ Object
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 |
# File 'waxx/mysql2.rb', line 144 def post(x, data, cols:nil, returning:nil, view:nil, &blk) if view cols = view.columns.select{|n,c| c[:table] == @table} else cols ||= @columns end data = blk.call if block_given? sql = "INSERT INTO #{@table} (" names = [] vars = [] vals = [] ret = [] i = 1 cols.each{|n,v| if data/n names << n.to_s vars << "?" vals << cast(v, data/n) i += 1 end ret << n.to_s } sql << names.join(",") sql << ") VALUES (#{vars.join(",")})" Waxx.debug(sql) Waxx.debug(vals) x.db[@db].prepare(sql).execute(*vals) id = x.db[@db].last_id x.db[@db].prepare("SELECT #{returning || ret.join(",")} FROM #{@table} WHERE #{@pkey} = ?").execute(id).first end |
#put(x, id, data, cols: nil, returning: nil, view: nil, where: nil, &blk) ⇒ Object Also known as: patch
175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 |
# File 'waxx/mysql2.rb', line 175 def put(x, id, data, cols:nil, returning:nil, view:nil, where:nil, &blk) if view cols = view.columns.select{|n,c| c[:table] == @table} else cols ||= @columns end data = blk.call if block_given? sql = "UPDATE #{@table} SET " set = [] vals = [] ret = [] i = 1 Waxx.debug "data: #{data}" cols.each{|n,v| Waxx.debug "col: #{n}: #{v.inspect}" if data.has_key? n.to_s or data.has_key? n.to_sym set << "#{n} = ?" vals << cast(v, data/n) ret << n.to_s i += 1 end } sql << set.join(",") sql << " WHERE #{@pkey} = ? #{where}" vals << id Waxx.debug(sql) Waxx.debug(vals) x.db[@db].prepare(sql).execute(*vals) x.db[@db].prepare("SELECT #{returning || ret.join(",")} FROM #{@table} WHERE #{@pkey} = ?").execute(id).first end |
#put_post(x, id, data, cols: nil, returning: nil, view: nil) ⇒ Object
207 208 209 210 211 212 |
# File 'waxx/mysql2.rb', line 207 def put_post(x, id, data, cols:nil, returning:nil, view: nil) q = nil q = get_by_id(x, id, @pkey) if id.to_i > 0 return post(x, data, cols: cols, returning: returning, view: view) if q.nil? put(x, id, data, cols: cols, returning: returning, view: view) end |