agile web development with rails 4

isNone:user= User (username = form.name.data,email=form.email.data,password=form.password.data)#Insert a row if it does not exist db.session.add (user) Db.session.commit ()#these two lines are necessary.session['known'] =FalseElse: session['known'] =True session['name']=Form.name.data Form.name.data="' returnRender_template ('index.html', Form=form,name=session.get ('name'), known = Session.get ('known', False)) if __name__=='__main__': App.run (Debug=true) Of course, our template rendering

My first python web development framework (4) -- database structure design and creation, and python Structure Design After finishing the front-end html design, Tom immediately began to design the database structure. 　　 Before he started, Tom recalled the database design explanation that the boss talked about during training at the company: For beginners, it is no

In the dark light, only one monitor is still on in Noo's office, with a pile of characters beating and a blurred back staring at the screen... That is it male Luo shuquan. The indicator lights next to the computer are blinking like fireflies, silent... There was a burst of cheers. This is a symbolic time,CodeThe basic development is complete. The next step is the self-testing stage, a worrying and exciting stage. I'm glad that I can just relax after

out of the loop, the code after the loop resumes (if any): instancefor (i=0;i{if (i==3){break;}X=x + "The number is" + i + "}Because the IF statement has only one line of code, you can omit the curly braces:for (i=0;i{if (i==3) break;X=x + "The number is" + i + "}Continue statementsThe continue statement interrupts the iteration in the loop, if the specified condition occurs, and then resumes the next iteration in the loop.This example skips the value 3: instancefor (i=0;i{if (i==3) continue;X=

from Import error@error (404) def error404 (Error): return ' Here , sorry. 'The above code, is the definition of 404, here Note that there is a httperror,HTTPErrorUses a predefined HTML template to build the body of the response. Instead of using can use with the HTTPError response appropriate status code and body.ImportJSON fromBottleImportrun, Route, Response@route ('/text')defGet_text (): Response.Status= 400return 'Object already exists with that name'@route ('/json')defGet_json (): Resp

the CSS style code:/*CSS Global Settings */*{ margin:0; padding:0; font-size:16px; Font-family: "Microsoft Jas Black";}. nav{ height:40px; margin-top:50px; margin-left:10px;}. Nav ul{ List-style:none;} /* Set the key */.nav li{ float:left;}. Nav Li a{ background-color: #EEEEEE; Text-decoration:none; Color: #000000; Display:block; width:90px; height:40px; line-height:40px; Text-align:center; margin-right:1px;}. Nav Li a:hover{ background-color: #FF

1.3 install the eclipse integrated development environment The eclipse integrated development environment provides an integrated environment for editing, compiling, and running Java Web applications and provides many conveniences for programmers. The latest version of eclipse is 3.5. This book uses eclipseVersion 3.5. 1.3.1 download eclipse 3.5 Choose eclipse fro

When we do a variety of applications, we may use to chart statistics, previously exposed to a number of different chart controls, inadvertently discovered the chart control Highcharts, its powerful features and rich interactive effect, unforgettable. This article mainly introduces the use of chart control highcharts in Web development, as well as the unification of Chinese and other operations, so that our

Enterprise Solution supports user-defined query and lookup, and defines query as a standard function. lookup is used to return the query value to the data input form. First, configure the database connection string and use the company registration to register a new database connection. In the query designer, select the corresponding object and design the association. The Web framework can parse the query and turn it into a page function. Add a Trigger

";}. nav{ height:40px; margin-top:50px; margin-left:10px;}. Nav ul{ List-style:none;} /* Set the key */.nav li{ float:left;}. Nav Li a{ background-color: #EEEEEE; Text-decoration:none; Color: #000000; Display:block; width:90px; height:40px; line-height:40px; Text-align:center; margin-right:1px;}. Nav Li a:hover{ background-color: #FF6600; Color: #FFFFFF;}Effect Show:Three-fillet menuProduction principle: On the basis of the horizontal menu we make CSS f