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[solved] return a qstring of a line by lineposition of a plaintextedit

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  • Karoluss96K Offline
    Karoluss96K Offline
    Karoluss96
    wrote on last edited by Karoluss96
    #6

    Yes, I tried some versions... in friday afternoom :-P

    Now it looks that:

     s=((str(query.record().value("CODE")) + ' - ' + str(query.record().value("STATUS_CONTR"))))
     a=s.split("\n")
     for i in a:
                   print (a) #here I need to put 
    # in the end I suppose:
     self.dlg.plainTextEdit.setPlaceholderText(s)
    #but I'm not sure
    
    JonBJ 1 Reply Last reply
    0
    • Karoluss96K Karoluss96

      Yes, I tried some versions... in friday afternoom :-P

      Now it looks that:

       s=((str(query.record().value("CODE")) + ' - ' + str(query.record().value("STATUS_CONTR"))))
       a=s.split("\n")
       for i in a:
                     print (a) #here I need to put 
      # in the end I suppose:
       self.dlg.plainTextEdit.setPlaceholderText(s)
      #but I'm not sure
      
      JonBJ Online
      JonBJ Online
      JonB
      wrote on last edited by JonB
      #7

      @Karoluss96

       for i in a:
                     print (a) #here I need to put 
      

      Since i is now a line in a, and since the original code appends each line to plainTextEditContents, did you just try plainTextEditContents += i?

      Actually the effect of the whole C++ loop can be achieved in Python via:

      plainTextEditContents = "\n".join(lines);
      

      (which is just the reverse of the earlier lines = plainTextEditContents.split("\n")).

      Karoluss96K 1 Reply Last reply
      1
      • JonBJ JonB

        @Karoluss96

         for i in a:
                       print (a) #here I need to put 
        

        Since i is now a line in a, and since the original code appends each line to plainTextEditContents, did you just try plainTextEditContents += i?

        Actually the effect of the whole C++ loop can be achieved in Python via:

        plainTextEditContents = "\n".join(lines);
        

        (which is just the reverse of the earlier lines = plainTextEditContents.split("\n")).

        Karoluss96K Offline
        Karoluss96K Offline
        Karoluss96
        wrote on last edited by
        #8

        @JonB I'm not sure that command "+=" is possible in Python... but maybe I've done it wrong

        JonBJ 1 Reply Last reply
        0
        • Karoluss96K Karoluss96

          @JonB I'm not sure that command "+=" is possible in Python... but maybe I've done it wrong

          JonBJ Online
          JonBJ Online
          JonB
          wrote on last edited by
          #9

          @Karoluss96

          I'm not sure that command "+=" is possible in Python... but maybe I've done it wrong

          It is perfectly legal.

          But in any case, read the last bit I've added to my response: you don't need to bother with any loop at all in Python.

          1 Reply Last reply
          0
          • Karoluss96K Offline
            Karoluss96K Offline
            Karoluss96
            wrote on last edited by
            #10

            OK, now it looks that:

             s=((str(query.record().value("CODE")) + ' - ' + str(query.record().value("STATUS_CONTR"))))
             a=s.split("\n")
             plainText = self.dlg.textEdit.toPlainText()
             plainText = "\n".join(a)
             for i in a:
                  plainText += i
            

            later I nedd to put all text (not only one record) into textEdit so:

            self.dlg.plainTextEdit.setPlaceholderText(plainText)
            

            shows only the last record, so that loop I think, is compulsory

            JonBJ 1 Reply Last reply
            0
            • Karoluss96K Karoluss96

              OK, now it looks that:

               s=((str(query.record().value("CODE")) + ' - ' + str(query.record().value("STATUS_CONTR"))))
               a=s.split("\n")
               plainText = self.dlg.textEdit.toPlainText()
               plainText = "\n".join(a)
               for i in a:
                    plainText += i
              

              later I nedd to put all text (not only one record) into textEdit so:

              self.dlg.plainTextEdit.setPlaceholderText(plainText)
              

              shows only the last record, so that loop I think, is compulsory

              JonBJ Online
              JonBJ Online
              JonB
              wrote on last edited by JonB
              #11

              @Karoluss96 said in [solved] return a qstring of a line by lineposition of a plaintextedit:

              plainText = "\n".join(a)
              for i in a:
                   plainText += i
              

              Please read what I wrote, and take the time to understand what you are doing

              Actually the effect of the whole C++ loop can be achieved in Python via:

              you don't need to bother with any loop at all in Python.

               plainText = self.dlg.textEdit.toPlainText()
               plainText = "\n".join(a)
              

              I don't know what you are intending to do here. The second line completely replaces the value assigned into plainText by the first line.

              1 Reply Last reply
              1
              • Karoluss96K Offline
                Karoluss96K Offline
                Karoluss96
                wrote on last edited by
                #12

                The difference of my point is that i don't want to replace 1st value by 2nd but put it down (next) after the first. Finally I need to see:

                'wait - waiting for data
                protocol - data in protocol
                end_of_contr - the end of control '

                etc.

                This what you send, works good, but the final show must be as above write

                JonBJ 1 Reply Last reply
                0
                • Karoluss96K Karoluss96

                  The difference of my point is that i don't want to replace 1st value by 2nd but put it down (next) after the first. Finally I need to see:

                  'wait - waiting for data
                  protocol - data in protocol
                  end_of_contr - the end of control '

                  etc.

                  This what you send, works good, but the final show must be as above write

                  JonBJ Online
                  JonBJ Online
                  JonB
                  wrote on last edited by
                  #13

                  @Karoluss96
                  I don't understand what you are saying. In any case since you know now that += can be used to append a string to a variable I imagine you can use that in place of = where you want to append.

                  1 Reply Last reply
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                  • Karoluss96K Offline
                    Karoluss96K Offline
                    Karoluss96
                    wrote on last edited by
                    #14

                    @JonB said in [solved] return a qstring of a line by lineposition of a plaintextedit:

                    In any case since you know now that += can be used to append a string to a variable I imagine you can use that in place of = where you want to append.

                    Changing += to = nothing present.
                    Now I have that:

                     for i in a:
                                   plainText = i
                     self.dlg.plainTextEdit.setPlaceholderText(plainText)
                    
                    JonBJ 1 Reply Last reply
                    0
                    • Karoluss96K Karoluss96

                      @JonB said in [solved] return a qstring of a line by lineposition of a plaintextedit:

                      In any case since you know now that += can be used to append a string to a variable I imagine you can use that in place of = where you want to append.

                      Changing += to = nothing present.
                      Now I have that:

                       for i in a:
                                     plainText = i
                       self.dlg.plainTextEdit.setPlaceholderText(plainText)
                      
                      JonBJ Online
                      JonBJ Online
                      JonB
                      wrote on last edited by
                      #15

                      @Karoluss96 said in [solved] return a qstring of a line by lineposition of a plaintextedit:

                      Changing += to = nothing present.

                      What does this mean?

                       for i in a:
                                     plainText = i
                      

                      What do you think this achieves? Please review assigning to versus appending to a variable, this is basic Python stuff. You have all the information you need.

                      1 Reply Last reply
                      0
                      • Karoluss96K Offline
                        Karoluss96K Offline
                        Karoluss96
                        wrote on last edited by
                        #16

                        I return to "+=".
                        Now I try to put from begin in this forum code:
                        if (i!=lines.size()-1)
                        plainTextEditContents += "\n";

                        but I don't know which python function is equivalent for C++'s .size()

                        JonBJ jsulmJ 2 Replies Last reply
                        0
                        • Karoluss96K Karoluss96

                          I return to "+=".
                          Now I try to put from begin in this forum code:
                          if (i!=lines.size()-1)
                          plainTextEditContents += "\n";

                          but I don't know which python function is equivalent for C++'s .size()

                          JonBJ Online
                          JonBJ Online
                          JonB
                          wrote on last edited by
                          #17

                          @Karoluss96

                          • First, I already showed you that "\n".join(lines) does the whole of what the for loop does, without any need to build it line by line or look at how may elements are in lines. Now you return to not using it.

                          • If you insist on doing it your slow way, look up what C++ QList::size() returns and then use your knowledge of Python to call its method for returning the number of items in a Python list.

                          Sorry, but you are making a mountain out of mole hill for this and not acting properly on suggestions. I leave you to it....

                          1 Reply Last reply
                          1
                          • Karoluss96K Karoluss96

                            I return to "+=".
                            Now I try to put from begin in this forum code:
                            if (i!=lines.size()-1)
                            plainTextEditContents += "\n";

                            but I don't know which python function is equivalent for C++'s .size()

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #18

                            @Karoluss96 Please take a look at the code you posted and think about what you are doing:

                            plainText = "\n".join(a)
                            for i in a:
                                 plainText += i
                            

                            Don't you think that you're doing same thing two times?

                            https://forum.qt.io/topic/113070/qt-code-of-conduct

                            1 Reply Last reply
                            0
                            • Karoluss96K Offline
                              Karoluss96K Offline
                              Karoluss96
                              wrote on last edited by
                              #19

                              Yes It true :-D , but I still I don't know how to put every line from sql question into text Edit, like I show in one of posts above

                              jsulmJ 1 Reply Last reply
                              0
                              • Karoluss96K Karoluss96

                                Yes It true :-D , but I still I don't know how to put every line from sql question into text Edit, like I show in one of posts above

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #20

                                @Karoluss96 Do you mean this:

                                self.dlg.plainTextEdit.setPlaceholderText(plainText)
                                

                                ? If so it should work already. Or do you want to set normal text (not placeholder)?

                                https://forum.qt.io/topic/113070/qt-code-of-conduct

                                1 Reply Last reply
                                1
                                • Karoluss96K Offline
                                  Karoluss96K Offline
                                  Karoluss96
                                  wrote on last edited by
                                  #21

                                  I changed plaintextEdit to textEdit, but setplaceholder is the same.

                                  plainText must be a string or list string?

                                  jsulmJ JonBJ 2 Replies Last reply
                                  0
                                  • Karoluss96K Karoluss96

                                    I changed plaintextEdit to textEdit, but setplaceholder is the same.

                                    plainText must be a string or list string?

                                    jsulmJ Offline
                                    jsulmJ Offline
                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by jsulm
                                    #22

                                    @Karoluss96 Why don't you simply read the documentation?!
                                    https://doc.qt.io/qt-6/qtextedit.html#setText
                                    https://doc.qt.io/qt-6/qtextedit.html#setPlainText
                                    https://doc.qt.io/qt-6/qtextedit.html#placeholderText-prop

                                    https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    Karoluss96K 1 Reply Last reply
                                    0
                                    • Karoluss96K Karoluss96

                                      I changed plaintextEdit to textEdit, but setplaceholder is the same.

                                      plainText must be a string or list string?

                                      JonBJ Online
                                      JonBJ Online
                                      JonB
                                      wrote on last edited by JonB
                                      #23

                                      @Karoluss96
                                      What is going on here? Did you read what setPlaceHolder() does? It will only show anything if the text edit is empty. Is it? Is that what you really want anyway?

                                      As @jsulm & I say, why don't you try reading the documentation and make the appropriate calls, rather than guessing and asking about each thing?

                                      1 Reply Last reply
                                      0
                                      • jsulmJ jsulm

                                        @Karoluss96 Why don't you simply read the documentation?!
                                        https://doc.qt.io/qt-6/qtextedit.html#setText
                                        https://doc.qt.io/qt-6/qtextedit.html#setPlainText
                                        https://doc.qt.io/qt-6/qtextedit.html#placeholderText-prop

                                        Karoluss96K Offline
                                        Karoluss96K Offline
                                        Karoluss96
                                        wrote on last edited by
                                        #24

                                        @jsulm Thank I've already read it

                                        jsulmJ 1 Reply Last reply
                                        0
                                        • Karoluss96K Karoluss96

                                          @jsulm Thank I've already read it

                                          jsulmJ Offline
                                          jsulmJ Offline
                                          jsulm
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #25

                                          @Karoluss96 said in [solved] return a qstring of a line by lineposition of a plaintextedit:

                                          Thank I've already read it

                                          OK, and what is the problem?

                                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          1 Reply Last reply
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